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5188 commits

Author SHA1 Message Date
Srinivasarao P
b2c952f9a8 Merge android-4.4.146 (13962260) into msm-4.4
* refs/heads/tmp-13962260
  Linux 4.4.146
  scsi: sg: fix minor memory leak in error path
  crypto: padlock-aes - Fix Nano workaround data corruption
  kvm: x86: vmx: fix vpid leak
  virtio_balloon: fix another race between migration and ballooning
  net: socket: fix potential spectre v1 gadget in socketcall
  can: ems_usb: Fix memory leak on ems_usb_disconnect()
  squashfs: more metadata hardenings
  squashfs: more metadata hardening
  netlink: Fix spectre v1 gadget in netlink_create()
  net: dsa: Do not suspend/resume closed slave_dev
  inet: frag: enforce memory limits earlier
  tcp: add one more quick ack after after ECN events
  tcp: refactor tcp_ecn_check_ce to remove sk type cast
  tcp: do not aggressively quick ack after ECN events
  tcp: add max_quickacks param to tcp_incr_quickack and tcp_enter_quickack_mode
  tcp: do not force quickack when receiving out-of-order packets
  NET: stmmac: align DMA stuff to largest cache line length
  xen-netfront: wait xenbus state change when load module manually
  net: lan78xx: fix rx handling before first packet is send
  net: fix amd-xgbe flow-control issue
  ipv4: remove BUG_ON() from fib_compute_spec_dst
  ASoC: pxa: Fix module autoload for platform drivers
  dmaengine: pxa_dma: remove duplicate const qualifier
  ext4: check for allocation block validity with block group locked
  ext4: fix inline data updates with checksums enabled
  squashfs: be more careful about metadata corruption
  random: mix rdrand with entropy sent in from userspace
  drm: Add DP PSR2 sink enable bit
  media: si470x: fix __be16 annotations
  scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs
  scsi: scsi_dh: replace too broad "TP9" string with the exact models
  media: omap3isp: fix unbalanced dma_iommu_mapping
  crypto: authenc - don't leak pointers to authenc keys
  crypto: authencesn - don't leak pointers to authenc keys
  usb: hub: Don't wait for connect state at resume for powered-off ports
  microblaze: Fix simpleImage format generation
  audit: allow not equal op for audit by executable
  rsi: Fix 'invalid vdd' warning in mmc
  ipconfig: Correctly initialise ic_nameservers
  drm/gma500: fix psb_intel_lvds_mode_valid()'s return type
  memory: tegra: Apply interrupts mask per SoC
  memory: tegra: Do not handle spurious interrupts
  ALSA: hda/ca0132: fix build failure when a local macro is defined
  drm/atomic: Handling the case when setting old crtc for plane
  media: siano: get rid of __le32/__le16 cast warnings
  bpf: fix references to free_bpf_prog_info() in comments
  thermal: exynos: fix setting rising_threshold for Exynos5433
  scsi: megaraid: silence a static checker bug
  scsi: 3w-xxxx: fix a missing-check bug
  scsi: 3w-9xxx: fix a missing-check bug
  perf: fix invalid bit in diagnostic entry
  s390/cpum_sf: Add data entry sizes to sampling trailer entry
  brcmfmac: Add support for bcm43364 wireless chipset
  mtd: rawnand: fsl_ifc: fix FSL NAND driver to read all ONFI parameter pages
  media: saa7164: Fix driver name in debug output
  libata: Fix command retry decision
  media: rcar_jpu: Add missing clk_disable_unprepare() on error in jpu_open()
  dma-iommu: Fix compilation when !CONFIG_IOMMU_DMA
  tty: Fix data race in tty_insert_flip_string_fixed_flag
  HID: i2c-hid: check if device is there before really probing
  powerpc/embedded6xx/hlwd-pic: Prevent interrupts from being handled by Starlet
  drm/radeon: fix mode_valid's return type
  HID: hid-plantronics: Re-resend Update to map button for PTT products
  ALSA: usb-audio: Apply rate limit to warning messages in URB complete callback
  media: smiapp: fix timeout checking in smiapp_read_nvm
  md: fix NULL dereference of mddev->pers in remove_and_add_spares()
  regulator: pfuze100: add .is_enable() for pfuze100_swb_regulator_ops
  ALSA: emu10k1: Rate-limit error messages about page errors
  scsi: ufs: fix exception event handling
  mwifiex: correct histogram data with appropriate index
  PCI: pciehp: Request control of native hotplug only if supported
  pinctrl: at91-pio4: add missing of_node_put
  powerpc/8xx: fix invalid register expression in head_8xx.S
  powerpc/powermac: Mark variable x as unused
  powerpc/powermac: Add missing prototype for note_bootable_part()
  powerpc/chrp/time: Make some functions static, add missing header include
  powerpc/32: Add a missing include header
  ath: Add regulatory mapping for Bahamas
  ath: Add regulatory mapping for Bermuda
  ath: Add regulatory mapping for Serbia
  ath: Add regulatory mapping for Tanzania
  ath: Add regulatory mapping for Uganda
  ath: Add regulatory mapping for APL2_FCCA
  ath: Add regulatory mapping for APL13_WORLD
  ath: Add regulatory mapping for ETSI8_WORLD
  ath: Add regulatory mapping for FCC3_ETSIC
  PCI: Prevent sysfs disable of device while driver is attached
  btrfs: qgroup: Finish rescan when hit the last leaf of extent tree
  btrfs: add barriers to btrfs_sync_log before log_commit_wait wakeups
  media: videobuf2-core: don't call memop 'finish' when queueing
  wlcore: sdio: check for valid platform device data before suspend
  mwifiex: handle race during mwifiex_usb_disconnect
  mfd: cros_ec: Fail early if we cannot identify the EC
  ASoC: dpcm: fix BE dai not hw_free and shutdown
  Bluetooth: btusb: Add a new Realtek 8723DE ID 2ff8:b011
  Bluetooth: hci_qca: Fix "Sleep inside atomic section" warning
  iwlwifi: pcie: fix race in Rx buffer allocator
  perf/x86/intel/uncore: Correct fixed counter index check for NHM
  perf/x86/intel/uncore: Correct fixed counter index check in generic code
  usbip: usbip_detach: Fix memory, udev context and udev leak
  f2fs: fix to don't trigger writeback during recovery
  disable loading f2fs module on PAGE_SIZE > 4KB
  RDMA/mad: Convert BUG_ONs to error flows
  powerpc/64s: Fix compiler store ordering to SLB shadow area
  hvc_opal: don't set tb_ticks_per_usec in udbg_init_opal_common()
  infiniband: fix a possible use-after-free bug
  netfilter: ipset: List timing out entries with "timeout 1" instead of zero
  rtc: ensure rtc_set_alarm fails when alarms are not supported
  mm/slub.c: add __printf verification to slab_err()
  mm: vmalloc: avoid racy handling of debugobjects in vunmap
  nfsd: fix potential use-after-free in nfsd4_decode_getdeviceinfo
  ALSA: fm801: add error handling for snd_ctl_add
  ALSA: emu10k1: add error handling for snd_ctl_add
  xen/netfront: raise max number of slots in xennet_get_responses()
  tracing: Quiet gcc warning about maybe unused link variable
  tracing/kprobes: Fix trace_probe flags on enable_trace_kprobe() failure
  tracing: Fix possible double free in event_enable_trigger_func()
  tracing: Fix double free of event_trigger_data
  Input: elan_i2c - add another ACPI ID for Lenovo Ideapad 330-15AST
  Input: i8042 - add Lenovo LaVie Z to the i8042 reset list
  Input: elan_i2c - add ACPI ID for lenovo ideapad 330
  MIPS: Fix off-by-one in pci_resource_to_user()
  kernel/sys.c: fix merge error with 4.4.144

Conflicts:
	drivers/scsi/ufs/ufshcd.c
	include/net/tcp.h
	net/socket.c

Change-Id: Ie84fdcf54b0a45508f76ef56330291f54e35ed30
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
2018-08-07 15:36:56 +05:30
Greg Kroah-Hartman
1396226023 This is the 4.4.146 stable release
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Merge 4.4.146 into android-4.4

Changes in 4.4.146
	MIPS: Fix off-by-one in pci_resource_to_user()
	Input: elan_i2c - add ACPI ID for lenovo ideapad 330
	Input: i8042 - add Lenovo LaVie Z to the i8042 reset list
	Input: elan_i2c - add another ACPI ID for Lenovo Ideapad 330-15AST
	tracing: Fix double free of event_trigger_data
	tracing: Fix possible double free in event_enable_trigger_func()
	tracing/kprobes: Fix trace_probe flags on enable_trace_kprobe() failure
	tracing: Quiet gcc warning about maybe unused link variable
	xen/netfront: raise max number of slots in xennet_get_responses()
	ALSA: emu10k1: add error handling for snd_ctl_add
	ALSA: fm801: add error handling for snd_ctl_add
	nfsd: fix potential use-after-free in nfsd4_decode_getdeviceinfo
	mm: vmalloc: avoid racy handling of debugobjects in vunmap
	mm/slub.c: add __printf verification to slab_err()
	rtc: ensure rtc_set_alarm fails when alarms are not supported
	netfilter: ipset: List timing out entries with "timeout 1" instead of zero
	infiniband: fix a possible use-after-free bug
	hvc_opal: don't set tb_ticks_per_usec in udbg_init_opal_common()
	powerpc/64s: Fix compiler store ordering to SLB shadow area
	RDMA/mad: Convert BUG_ONs to error flows
	disable loading f2fs module on PAGE_SIZE > 4KB
	f2fs: fix to don't trigger writeback during recovery
	usbip: usbip_detach: Fix memory, udev context and udev leak
	perf/x86/intel/uncore: Correct fixed counter index check in generic code
	perf/x86/intel/uncore: Correct fixed counter index check for NHM
	iwlwifi: pcie: fix race in Rx buffer allocator
	Bluetooth: hci_qca: Fix "Sleep inside atomic section" warning
	Bluetooth: btusb: Add a new Realtek 8723DE ID 2ff8:b011
	ASoC: dpcm: fix BE dai not hw_free and shutdown
	mfd: cros_ec: Fail early if we cannot identify the EC
	mwifiex: handle race during mwifiex_usb_disconnect
	wlcore: sdio: check for valid platform device data before suspend
	media: videobuf2-core: don't call memop 'finish' when queueing
	btrfs: add barriers to btrfs_sync_log before log_commit_wait wakeups
	btrfs: qgroup: Finish rescan when hit the last leaf of extent tree
	PCI: Prevent sysfs disable of device while driver is attached
	ath: Add regulatory mapping for FCC3_ETSIC
	ath: Add regulatory mapping for ETSI8_WORLD
	ath: Add regulatory mapping for APL13_WORLD
	ath: Add regulatory mapping for APL2_FCCA
	ath: Add regulatory mapping for Uganda
	ath: Add regulatory mapping for Tanzania
	ath: Add regulatory mapping for Serbia
	ath: Add regulatory mapping for Bermuda
	ath: Add regulatory mapping for Bahamas
	powerpc/32: Add a missing include header
	powerpc/chrp/time: Make some functions static, add missing header include
	powerpc/powermac: Add missing prototype for note_bootable_part()
	powerpc/powermac: Mark variable x as unused
	powerpc/8xx: fix invalid register expression in head_8xx.S
	pinctrl: at91-pio4: add missing of_node_put
	PCI: pciehp: Request control of native hotplug only if supported
	mwifiex: correct histogram data with appropriate index
	scsi: ufs: fix exception event handling
	ALSA: emu10k1: Rate-limit error messages about page errors
	regulator: pfuze100: add .is_enable() for pfuze100_swb_regulator_ops
	md: fix NULL dereference of mddev->pers in remove_and_add_spares()
	media: smiapp: fix timeout checking in smiapp_read_nvm
	ALSA: usb-audio: Apply rate limit to warning messages in URB complete callback
	HID: hid-plantronics: Re-resend Update to map button for PTT products
	drm/radeon: fix mode_valid's return type
	powerpc/embedded6xx/hlwd-pic: Prevent interrupts from being handled by Starlet
	HID: i2c-hid: check if device is there before really probing
	tty: Fix data race in tty_insert_flip_string_fixed_flag
	dma-iommu: Fix compilation when !CONFIG_IOMMU_DMA
	media: rcar_jpu: Add missing clk_disable_unprepare() on error in jpu_open()
	libata: Fix command retry decision
	media: saa7164: Fix driver name in debug output
	mtd: rawnand: fsl_ifc: fix FSL NAND driver to read all ONFI parameter pages
	brcmfmac: Add support for bcm43364 wireless chipset
	s390/cpum_sf: Add data entry sizes to sampling trailer entry
	perf: fix invalid bit in diagnostic entry
	scsi: 3w-9xxx: fix a missing-check bug
	scsi: 3w-xxxx: fix a missing-check bug
	scsi: megaraid: silence a static checker bug
	thermal: exynos: fix setting rising_threshold for Exynos5433
	bpf: fix references to free_bpf_prog_info() in comments
	media: siano: get rid of __le32/__le16 cast warnings
	drm/atomic: Handling the case when setting old crtc for plane
	ALSA: hda/ca0132: fix build failure when a local macro is defined
	memory: tegra: Do not handle spurious interrupts
	memory: tegra: Apply interrupts mask per SoC
	drm/gma500: fix psb_intel_lvds_mode_valid()'s return type
	ipconfig: Correctly initialise ic_nameservers
	rsi: Fix 'invalid vdd' warning in mmc
	audit: allow not equal op for audit by executable
	microblaze: Fix simpleImage format generation
	usb: hub: Don't wait for connect state at resume for powered-off ports
	crypto: authencesn - don't leak pointers to authenc keys
	crypto: authenc - don't leak pointers to authenc keys
	media: omap3isp: fix unbalanced dma_iommu_mapping
	scsi: scsi_dh: replace too broad "TP9" string with the exact models
	scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs
	media: si470x: fix __be16 annotations
	drm: Add DP PSR2 sink enable bit
	random: mix rdrand with entropy sent in from userspace
	squashfs: be more careful about metadata corruption
	ext4: fix inline data updates with checksums enabled
	ext4: check for allocation block validity with block group locked
	dmaengine: pxa_dma: remove duplicate const qualifier
	ASoC: pxa: Fix module autoload for platform drivers
	ipv4: remove BUG_ON() from fib_compute_spec_dst
	net: fix amd-xgbe flow-control issue
	net: lan78xx: fix rx handling before first packet is send
	xen-netfront: wait xenbus state change when load module manually
	NET: stmmac: align DMA stuff to largest cache line length
	tcp: do not force quickack when receiving out-of-order packets
	tcp: add max_quickacks param to tcp_incr_quickack and tcp_enter_quickack_mode
	tcp: do not aggressively quick ack after ECN events
	tcp: refactor tcp_ecn_check_ce to remove sk type cast
	tcp: add one more quick ack after after ECN events
	inet: frag: enforce memory limits earlier
	net: dsa: Do not suspend/resume closed slave_dev
	netlink: Fix spectre v1 gadget in netlink_create()
	squashfs: more metadata hardening
	squashfs: more metadata hardenings
	can: ems_usb: Fix memory leak on ems_usb_disconnect()
	net: socket: fix potential spectre v1 gadget in socketcall
	virtio_balloon: fix another race between migration and ballooning
	kvm: x86: vmx: fix vpid leak
	crypto: padlock-aes - Fix Nano workaround data corruption
	scsi: sg: fix minor memory leak in error path
	Linux 4.4.146

Change-Id: Ia7e43a90d0f5603c741811436b8de41884cb2851
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-08-06 19:12:19 +02:00
Qu Wenruo
40e082b99a btrfs: qgroup: Finish rescan when hit the last leaf of extent tree
[ Upstream commit ff3d27a048d926b3920ccdb75d98788c567cae0d ]

Under the following case, qgroup rescan can double account cowed tree
blocks:

In this case, extent tree only has one tree block.

-
| transid=5 last committed=4
| btrfs_qgroup_rescan_worker()
| |- btrfs_start_transaction()
| |  transid = 5
| |- qgroup_rescan_leaf()
|    |- btrfs_search_slot_for_read() on extent tree
|       Get the only extent tree block from commit root (transid = 4).
|       Scan it, set qgroup_rescan_progress to the last
|       EXTENT/META_ITEM + 1
|       now qgroup_rescan_progress = A + 1.
|
| fs tree get CoWed, new tree block is at A + 16K
| transid 5 get committed
-
| transid=6 last committed=5
| btrfs_qgroup_rescan_worker()
| btrfs_qgroup_rescan_worker()
| |- btrfs_start_transaction()
| |  transid = 5
| |- qgroup_rescan_leaf()
|    |- btrfs_search_slot_for_read() on extent tree
|       Get the only extent tree block from commit root (transid = 5).
|       scan it using qgroup_rescan_progress (A + 1).
|       found new tree block beyong A, and it's fs tree block,
|       account it to increase qgroup numbers.
-

In above case, tree block A, and tree block A + 16K get accounted twice,
while qgroup rescan should stop when it already reach the last leaf,
other than continue using its qgroup_rescan_progress.

Such case could happen by just looping btrfs/017 and with some
possibility it can hit such double qgroup accounting problem.

Fix it by checking the path to determine if we should finish qgroup
rescan, other than relying on next loop to exit.

Reported-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-06 16:24:33 +02:00
David Sterba
082c983216 btrfs: add barriers to btrfs_sync_log before log_commit_wait wakeups
[ Upstream commit 3d3a2e610ea5e7c6d4f9481ecce5d8e2d8317843 ]

Currently the code assumes that there's an implied barrier by the
sequence of code preceding the wakeup, namely the mutex unlock.

As Nikolay pointed out:

I think this is wrong (not your code) but the original assumption that
the RELEASE semantics provided by mutex_unlock is sufficient.
According to memory-barriers.txt:

Section 'LOCK ACQUISITION FUNCTIONS' states:

 (2) RELEASE operation implication:

     Memory operations issued before the RELEASE will be completed before the
     RELEASE operation has completed.

     Memory operations issued after the RELEASE *may* be completed before the
     RELEASE operation has completed.

(I've bolded the may portion)

The example given there:

As an example, consider the following:

    *A = a;
    *B = b;
    ACQUIRE
    *C = c;
    *D = d;
    RELEASE
    *E = e;
    *F = f;

The following sequence of events is acceptable:

    ACQUIRE, {*F,*A}, *E, {*C,*D}, *B, RELEASE

So if we assume that *C is modifying the flag which the waitqueue is checking,
and *E is the actual wakeup, then those accesses can be re-ordered...

IMHO this code should be considered broken...
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-06 16:24:33 +02:00
Srinivasarao P
c2e09fadec Merge android-4.4.142 (8ec9fd8) into msm-4.4
* refs/heads/tmp-8ec9fd8
  ANDROID: sdcardfs: Check stacked filesystem depth
  Fix backport of "tcp: detect malicious patterns in tcp_collapse_ofo_queue()"
  tcp: detect malicious patterns in tcp_collapse_ofo_queue()
  tcp: avoid collapses in tcp_prune_queue() if possible
  x86_64_cuttlefish_defconfig: Enable android-verity
  x86_64_cuttlefish_defconfig: enable verity cert
  Linux 4.4.142
  perf tools: Move syscall number fallbacks from perf-sys.h to tools/arch/x86/include/asm/
  x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6
  Kbuild: fix # escaping in .cmd files for future Make
  ANDROID: Fix massive cpufreq_times memory leaks
  ANDROID: Reduce use of #ifdef CONFIG_CPU_FREQ_TIMES
  UPSTREAM: binder: replace "%p" with "%pK"
  UPSTREAM: binder: free memory on error
  UPSTREAM: binder: fix proc->files use-after-free
  UPSTREAM: Revert "FROMLIST: binder: fix proc->files use-after-free"
  UPSTREAM: ANDROID: binder: change down_write to down_read
  UPSTREAM: ANDROID: binder: correct the cmd print for BINDER_WORK_RETURN_ERROR
  UPSTREAM: ANDROID: binder: remove 32-bit binder interface.
  UPSTREAM: ANDROID: binder: re-order some conditions
  UPSTREAM: android: binder: use VM_ALLOC to get vm area
  UPSTREAM: android: binder: Use true and false for boolean values
  UPSTREAM: android: binder: Use octal permissions
  UPSTREAM: android: binder: Prefer __func__ to using hardcoded function name
  UPSTREAM: ANDROID: binder: make binder_alloc_new_buf_locked static and indent its arguments
  UPSTREAM: android: binder: Check for errors in binder_alloc_shrinker_init().
  treewide: Use array_size in f2fs_kvzalloc()
  treewide: Use array_size() in f2fs_kzalloc()
  treewide: Use array_size() in f2fs_kmalloc()
  overflow.h: Add allocation size calculation helpers
  f2fs: fix to clear FI_VOLATILE_FILE correctly
  f2fs: let sync node IO interrupt async one
  f2fs: don't change wbc->sync_mode
  f2fs: fix to update mtime correctly
  fs: f2fs: insert space around that ':' and ', '
  fs: f2fs: add missing blank lines after declarations
  fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
  f2fs: clean up symbol namespace
  f2fs: make set_de_type() static
  f2fs: make __f2fs_write_data_pages() static
  f2fs: fix to avoid accessing cross the boundary
  f2fs: fix to let caller retry allocating block address
  disable loading f2fs module on PAGE_SIZE > 4KB
  f2fs: fix error path of move_data_page
  f2fs: don't drop dentry pages after fs shutdown
  f2fs: fix to avoid race during access gc_thread pointer
  f2fs: clean up with clear_radix_tree_dirty_tag
  f2fs: fix to don't trigger writeback during recovery
  f2fs: clear discard_wake earlier
  f2fs: let discard thread wait a little longer if dev is busy
  f2fs: avoid stucking GC due to atomic write
  f2fs: introduce sbi->gc_mode to determine the policy
  f2fs: keep migration IO order in LFS mode
  f2fs: fix to wait page writeback during revoking atomic write
  f2fs: Fix deadlock in shutdown ioctl
  f2fs: detect synchronous writeback more earlier
  mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
  ceph: use pagevec_lookup_range_nr_tag()
  mm: add variant of pagevec_lookup_range_tag() taking number of pages
  mm: use pagevec_lookup_range_tag() in write_cache_pages()
  mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
  nilfs2: use pagevec_lookup_range_tag()
  gfs2: use pagevec_lookup_range_tag()
  f2fs: use find_get_pages_tag() for looking up single page
  f2fs: simplify page iteration loops
  f2fs: use pagevec_lookup_range_tag()
  ext4: use pagevec_lookup_range_tag()
  ceph: use pagevec_lookup_range_tag()
  btrfs: use pagevec_lookup_range_tag()
  mm: implement find_get_pages_range_tag()
  f2fs: clean up with is_valid_blkaddr()
  f2fs: fix to initialize min_mtime with ULLONG_MAX
  f2fs: fix to let checkpoint guarantee atomic page persistence
  f2fs: fix to initialize i_current_depth according to inode type
  Revert "f2fs: add ovp valid_blocks check for bg gc victim to fg_gc"
  f2fs: don't drop any page on f2fs_cp_error() case
  f2fs: fix spelling mistake: "extenstion" -> "extension"
  f2fs: enhance sanity_check_raw_super() to avoid potential overflows
  f2fs: treat volatile file's data as hot one
  f2fs: introduce release_discard_addr() for cleanup
  f2fs: fix potential overflow
  f2fs: rename dio_rwsem to i_gc_rwsem
  f2fs: move mnt_want_write_file after range check
  f2fs: fix missing clear FI_NO_PREALLOC in some error case
  f2fs: enforce fsync_mode=strict for renamed directory
  f2fs: sanity check for total valid node blocks
  f2fs: sanity check on sit entry
  f2fs: avoid bug_on on corrupted inode
  f2fs: give message and set need_fsck given broken node id
  f2fs: clean up commit_inmem_pages()
  f2fs: do not check F2FS_INLINE_DOTS in recover
  f2fs: remove duplicated dquot_initialize and fix error handling
  f2fs: stop issue discard if something wrong with f2fs
  f2fs: fix return value in f2fs_ioc_commit_atomic_write
  f2fs: allocate hot_data for atomic write more strictly
  f2fs: check if inmem_pages list is empty correctly
  f2fs: fix race in between GC and atomic open
  f2fs: change le32 to le16 of f2fs_inode->i_extra_size
  f2fs: check cur_valid_map_mir & raw_sit block count when flush sit entries
  f2fs: correct return value of f2fs_trim_fs
  f2fs: fix to show missing bits in FS_IOC_GETFLAGS
  f2fs: remove unneeded F2FS_PROJINHERIT_FL
  f2fs: don't use GFP_ZERO for page caches
  f2fs: issue all big range discards in umount process
  f2fs: remove redundant block plug
  f2fs: remove unmatched zero_user_segment when convert inline dentry
  f2fs: introduce private inode status mapping
  fscrypt: log the crypto algorithm implementations
  crypto: api - Add crypto_type_has_alg helper
  crypto: skcipher - Add low-level skcipher interface
  crypto: skcipher - Add helper to retrieve driver name
  crypto: skcipher - Add default key size helper
  fscrypt: add Speck128/256 support
  fscrypt: only derive the needed portion of the key
  fscrypt: separate key lookup from key derivation
  fscrypt: use a common logging function
  fscrypt: remove internal key size constants
  fscrypt: remove unnecessary check for non-logon key type
  fscrypt: make fscrypt_operations.max_namelen an integer
  fscrypt: drop empty name check from fname_decrypt()
  fscrypt: drop max_namelen check from fname_decrypt()
  fscrypt: don't special-case EOPNOTSUPP from fscrypt_get_encryption_info()
  fscrypt: don't clear flags on crypto transform
  fscrypt: remove stale comment from fscrypt_d_revalidate()
  fscrypt: remove error messages for skcipher_request_alloc() failure
  fscrypt: remove unnecessary NULL check when allocating skcipher
  fscrypt: clean up after fscrypt_prepare_lookup() conversions
  fscrypt: use unbound workqueue for decryption
  f2fs: run fstrim asynchronously if runtime discard is on
  f2fs: turn down IO priority of discard from background
  f2fs: don't split checkpoint in fstrim
  f2fs: issue discard commands proactively in high fs utilization
  f2fs: add fsync_mode=nobarrier for non-atomic files
  f2fs: let fstrim issue discard commands in lower priority
  f2fs: avoid fsync() failure caused by EAGAIN in writepage()
  f2fs: clear PageError on writepage - part 2
  f2fs: check cap_resource only for data blocks
  Revert "f2fs: introduce f2fs_set_page_dirty_nobuffer"
  f2fs: clear PageError on writepage
  f2fs: call unlock_new_inode() before d_instantiate()
  f2fs: refactor read path to allow multiple postprocessing steps
  fscrypt: allow synchronous bio decryption
  f2fs: remain written times to update inode during fsync
  f2fs: make assignment of t->dentry_bitmap more readable
  f2fs: truncate preallocated blocks in error case
  f2fs: fix a wrong condition in f2fs_skip_inode_update
  f2fs: reserve bits for fs-verity
  f2fs: Add a segment type check in inplace write
  f2fs: no need to initialize zero value for GFP_F2FS_ZERO
  f2fs: don't track new nat entry in nat set
  f2fs: clean up with F2FS_BLK_ALIGN
  f2fs: check blkaddr more accuratly before issue a bio
  f2fs: Set GF_NOFS in read_cache_page_gfp while doing f2fs_quota_read
  f2fs: introduce a new mount option test_dummy_encryption
  f2fs: introduce F2FS_FEATURE_LOST_FOUND feature
  f2fs: release locks before return in f2fs_ioc_gc_range()
  f2fs: align memory boundary for bitops
  f2fs: remove unneeded set_cold_node()
  f2fs: add nowait aio support
  f2fs: wrap all options with f2fs_sb_info.mount_opt
  f2fs: Don't overwrite all types of node to keep node chain
  f2fs: introduce mount option for fsync mode
  f2fs: fix to restore old mount option in ->remount_fs
  f2fs: wrap sb_rdonly with f2fs_readonly
  f2fs: avoid selinux denial on CAP_SYS_RESOURCE
  f2fs: support hot file extension
  f2fs: fix to avoid race in between atomic write and background GC
  f2fs: do gc in greedy mode for whole range if gc_urgent mode is set
  f2fs: issue discard aggressively in the gc_urgent mode
  f2fs: set readdir_ra by default
  f2fs: add auto tuning for small devices
  f2fs: add mount option for segment allocation policy
  f2fs: don't stop GC if GC is contended
  f2fs: expose extension_list sysfs entry
  f2fs: fix to set KEEP_SIZE bit in f2fs_zero_range
  f2fs: introduce sb_lock to make encrypt pwsalt update exclusive
  f2fs: remove redundant initialization of pointer 'p'
  f2fs: flush cp pack except cp pack 2 page at first
  f2fs: clean up f2fs_sb_has_xxx functions
  f2fs: remove redundant check of page type when submit bio
  f2fs: fix to handle looped node chain during recovery
  f2fs: handle quota for orphan inodes
  f2fs: support passing down write hints to block layer with F2FS policy
  f2fs: support passing down write hints given by users to block layer
  f2fs: fix to clear CP_TRIMMED_FLAG
  f2fs: support large nat bitmap
  f2fs: fix to check extent cache in f2fs_drop_extent_tree
  f2fs: restrict inline_xattr_size configuration
  f2fs: fix heap mode to reset it back
  f2fs: fix potential corruption in area before F2FS_SUPER_OFFSET
  fscrypt: fix build with pre-4.6 gcc versions
  fscrypt: fix up fscrypt_fname_encrypted_size() for internal use
  fscrypt: define fscrypt_fname_alloc_buffer() to be for presented names
  fscrypt: calculate NUL-padding length in one place only
  fscrypt: move fscrypt_symlink_data to fscrypt_private.h
  fscrypt: remove fscrypt_fname_usr_to_disk()
  f2fs: switch to fscrypt_get_symlink()
  f2fs: switch to fscrypt ->symlink() helper functions
  fscrypt: new helper function - fscrypt_get_symlink()
  fscrypt: new helper functions for ->symlink()
  fscrypt: trim down fscrypt.h includes
  fscrypt: move fscrypt_is_dot_dotdot() to fs/crypto/fname.c
  fscrypt: move fscrypt_valid_enc_modes() to fscrypt_private.h
  fscrypt: move fscrypt_operations declaration to fscrypt_supp.h
  fscrypt: split fscrypt_dummy_context_enabled() into supp/notsupp versions
  fscrypt: move fscrypt_ctx declaration to fscrypt_supp.h
  fscrypt: move fscrypt_info_cachep declaration to fscrypt_private.h
  fscrypt: move fscrypt_control_page() to supp/notsupp headers
  fscrypt: move fscrypt_has_encryption_key() to supp/notsupp headers
  f2fs: don't put dentry page in pagecache into highmem
  f2fs: support inode creation time
  f2fs: rebuild sit page from sit info in mem
  f2fs: stop issuing discard if fs is readonly
  f2fs: clean up duplicated assignment in init_discard_policy
  f2fs: use GFP_F2FS_ZERO for cleanup
  f2fs: allow to recover node blocks given updated checkpoint
  f2fs: recover some i_inline flags
  f2fs: correct removexattr behavior for null valued extended attribute
  f2fs: drop page cache after fs shutdown
  f2fs: stop gc/discard thread after fs shutdown
  f2fs: hanlde error case in f2fs_ioc_shutdown
  f2fs: split need_inplace_update
  f2fs: fix to update last_disk_size correctly
  f2fs: kill F2FS_INLINE_XATTR_ADDRS for cleanup
  f2fs: clean up error path of fill_super
  f2fs: avoid hungtask when GC encrypted block if io_bits is set
  f2fs: allow quota to use reserved blocks
  f2fs: fix to drop all inmem pages correctly
  f2fs: speed up defragment on sparse file
  f2fs: support F2FS_IOC_PRECACHE_EXTENTS
  f2fs: add an ioctl to disable GC for specific file
  f2fs: prevent newly created inode from being dirtied incorrectly
  f2fs: support FIEMAP_FLAG_XATTR
  f2fs: fix to cover f2fs_inline_data_fiemap with inode_lock
  f2fs: check node page again in write end io
  f2fs: fix to caclulate required free section correctly
  f2fs: handle newly created page when revoking inmem pages
  f2fs: add resgid and resuid to reserve root blocks
  f2fs: implement cgroup writeback support
  f2fs: remove unused pend_list_tag
  f2fs: avoid high cpu usage in discard thread
  f2fs: make local functions static
  f2fs: add reserved blocks for root user
  f2fs: check segment type in __f2fs_replace_block
  f2fs: update inode info to inode page for new file
  f2fs: show precise # of blocks that user/root can use
  f2fs: clean up unneeded declaration
  f2fs: continue to do direct IO if we only preallocate partial blocks
  f2fs: enable quota at remount from r to w
  f2fs: skip stop_checkpoint for user data writes
  f2fs: fix missing error number for xattr operation
  f2fs: recover directory operations by fsync
  f2fs: return error during fill_super
  f2fs: fix an error case of missing update inode page
  f2fs: fix potential hangtask in f2fs_trace_pid
  f2fs: no need return value in restore summary process
  f2fs: use unlikely for release case
  f2fs: don't return value in truncate_data_blocks_range
  f2fs: clean up f2fs_map_blocks
  f2fs: clean up hash codes
  f2fs: fix error handling in fill_super
  f2fs: spread f2fs_k{m,z}alloc
  f2fs: inject fault to kvmalloc
  f2fs: inject fault to kzalloc
  f2fs: remove a redundant conditional expression
  f2fs: apply write hints to select the type of segment for direct write
  f2fs: switch to fscrypt_prepare_setattr()
  f2fs: switch to fscrypt_prepare_lookup()
  f2fs: switch to fscrypt_prepare_rename()
  f2fs: switch to fscrypt_prepare_link()
  f2fs: switch to fscrypt_file_open()
  f2fs: remove repeated f2fs_bug_on
  f2fs: remove an excess variable
  f2fs: fix lock dependency in between dio_rwsem & i_mmap_sem
  f2fs: remove unused parameter
  f2fs: still write data if preallocate only partial blocks
  f2fs: introduce sysfs readdir_ra to readahead inode block in readdir
  f2fs: fix concurrent problem for updating free bitmap
  f2fs: remove unneeded memory footprint accounting
  f2fs: no need to read nat block if nat_block_bitmap is set
  f2fs: reserve nid resource for quota sysfile
  fscrypt: resolve some cherry-pick bugs
  fscrypt: move to generic async completion
  crypto: introduce crypto wait for async op
  fscrypt: lock mutex before checking for bounce page pool
  fscrypt: new helper function - fscrypt_prepare_setattr()
  fscrypt: new helper function - fscrypt_prepare_lookup()
  fscrypt: new helper function - fscrypt_prepare_rename()
  fscrypt: new helper function - fscrypt_prepare_link()
  fscrypt: new helper function - fscrypt_file_open()
  fscrypt: new helper function - fscrypt_require_key()
  fscrypt: remove unneeded empty fscrypt_operations structs
  fscrypt: remove ->is_encrypted()
  fscrypt: switch from ->is_encrypted() to IS_ENCRYPTED()
  fs, fscrypt: add an S_ENCRYPTED inode flag
  fscrypt: clean up include file mess
  fscrypt: fix dereference of NULL user_key_payload
  fscrypt: make ->dummy_context() return bool
  f2fs: deny accessing encryption policy if encryption is off
  f2fs: inject fault in inc_valid_node_count
  f2fs: fix to clear FI_NO_PREALLOC
  f2fs: expose quota information in debugfs
  f2fs: separate nat entry mem alloc from nat_tree_lock
  f2fs: validate before set/clear free nat bitmap
  f2fs: avoid opened loop codes in __add_ino_entry
  f2fs: apply write hints to select the type of segments for buffered write
  f2fs: introduce scan_curseg_cache for cleanup
  f2fs: optimize the way of traversing free_nid_bitmap
  f2fs: keep scanning until enough free nids are acquired
  f2fs: trace checkpoint reason in fsync()
  f2fs: keep isize once block is reserved cross EOF
  f2fs: avoid race in between GC and block exchange
  f2fs: save a multiplication for last_nid calculation
  f2fs: fix summary info corruption
  f2fs: remove dead code in update_meta_page
  f2fs: remove unneeded semicolon
  f2fs: don't bother with inode->i_version
  f2fs: check curseg space before foreground GC
  f2fs: use rw_semaphore to protect SIT cache
  f2fs: support quota sys files
  f2fs: add quota_ino feature infra
  f2fs: optimize __update_nat_bits
  f2fs: modify for accurate fggc node io stat
  Revert "f2fs: handle dirty segments inside refresh_sit_entry"
  f2fs: add a function to move nid
  f2fs: export SSR allocation threshold
  f2fs: give correct trimmed blocks in fstrim
  f2fs: support bio allocation error injection
  f2fs: support get_page error injection
  f2fs: add missing sysfs description
  f2fs: support soft block reservation
  f2fs: handle error case when adding xattr entry
  f2fs: support flexible inline xattr size
  f2fs: show current cp state
  f2fs: add missing quota_initialize
  f2fs: show # of dirty segments via sysfs
  f2fs: stop all the operations by cp_error flag
  f2fs: remove several redundant assignments
  f2fs: avoid using timespec
  f2fs: fix to correct no_fggc_candidate
  Revert "f2fs: return wrong error number on f2fs_quota_write"
  f2fs: remove obsolete pointer for truncate_xattr_node
  f2fs: retry ENOMEM for quota_read|write
  f2fs: limit # of inmemory pages
  f2fs: update ctx->pos correctly when hitting hole in directory
  f2fs: relocate readahead codes in readdir()
  f2fs: allow readdir() to be interrupted
  f2fs: trace f2fs_readdir
  f2fs: trace f2fs_lookup
  f2fs: skip searching non-exist range in truncate_hole
  f2fs: expose some sectors to user in inline data or dentry case
  f2fs: avoid stale fi->gdirty_list pointer
  f2fs/crypto: drop crypto key at evict_inode only
  f2fs: fix to avoid race when accessing last_disk_size
  f2fs: Fix bool initialization/comparison
  f2fs: give up CP_TRIMMED_FLAG if it drops discards
  f2fs: trace f2fs_remove_discard
  f2fs: reduce cmd_lock coverage in __issue_discard_cmd
  f2fs: split discard policy
  f2fs: wrap discard policy
  f2fs: support issuing/waiting discard in range
  f2fs: fix to flush multiple device in checkpoint
  f2fs: enhance multiple device flush
  f2fs: fix to show ino management cache size correctly
  f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush
  f2fs: obsolete ALLOC_NID_LIST list
  f2fs: convert inline data for direct I/O & FI_NO_PREALLOC
  f2fs: allow readpages with NULL file pointer
  f2fs: show flush list status in sysfs
  f2fs: introduce read_xattr_block
  f2fs: introduce read_inline_xattr
  Revert "f2fs: reuse nids more aggressively"
  Revert "f2fs: node segment is prior to data segment selected victim"
  f2fs: fix potential panic during fstrim
  f2fs: hurry up to issue discard after io interruption
  f2fs: fix to show correct discard_granularity in sysfs
  f2fs: detect dirty inode in evict_inode
  f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared
  f2fs: speed up gc_urgent mode with SSR
  f2fs: better to wait for fstrim completion
  f2fs: avoid race in between read xattr & write xattr
  f2fs: make get_lock_data_page to handle encrypted inode
  f2fs: use generic terms used for encrypted block management
  f2fs: introduce f2fs_encrypted_file for clean-up
  Revert "f2fs: add a new function get_ssr_cost"
  f2fs: constify super_operations
  f2fs: fix to wake up all sleeping flusher
  f2fs: avoid race in between atomic_read & atomic_inc
  f2fs: remove unneeded parameter of change_curseg
  f2fs: update i_flags correctly
  f2fs: don't check inode's checksum if it was dirtied or writebacked
  f2fs: don't need to update inode checksum for recovery
  f2fs: trigger fdatasync for non-atomic_write file
  f2fs: fix to avoid race in between aio and gc
  f2fs: wake up discard_thread iff there is a candidate
  f2fs: return error when accessing insane flie offset
  f2fs: trigger normal fsync for non-atomic_write file
  f2fs: clear FI_HOT_DATA correctly
  f2fs: fix out-of-order execution in f2fs_issue_flush
  f2fs: issue discard commands if gc_urgent is set
  f2fs: introduce discard_granularity sysfs entry
  f2fs: remove unused function overprovision_sections
  f2fs: check hot_data for roll-forward recovery
  f2fs: add tracepoint for f2fs_gc
  f2fs: retry to revoke atomic commit in -ENOMEM case
  f2fs: let fill_super handle roll-forward errors
  f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
  f2fs: support journalled quota
  f2fs: fix potential overflow when adjusting GC cycle
  f2fs: avoid unneeded sync on quota file
  f2fs: introduce gc_urgent mode for background GC
  f2fs: use IPU for cold files
  f2fs: fix the size value in __check_sit_bitmap
  f2fs: add app/fs io stat
  f2fs: do not change the valid_block value if cur_valid_map was wrongly set or cleared
  f2fs: update cur_valid_map_mir together with cur_valid_map
  f2fs: use printk_ratelimited for f2fs_msg
  f2fs: expose features to sysfs entry
  f2fs: support inode checksum
  f2fs: return wrong error number on f2fs_quota_write
  f2fs: provide f2fs_balance_fs to __write_node_page
  f2fs: introduce f2fs_statfs_project
  f2fs: don't need to wait for node writes for atomic write
  f2fs: avoid naming confusion of sysfs init
  f2fs: support project quota
  f2fs: record quota during dot{,dot} recovery
  f2fs: enhance on-disk inode structure scalability
  f2fs: make max inline size changeable
  f2fs: add ioctl to expose current features
  f2fs: make background threads of f2fs being aware of freezing
  f2fs: don't give partially written atomic data from process crash
  f2fs: give a try to do atomic write in -ENOMEM case
  f2fs: preserve i_mode if __f2fs_set_acl() fails
  f2fs: alloc new nids for xattr block in recovery
  f2fs: spread struct f2fs_dentry_ptr for inline path
  f2fs: remove unused input parameter
  f2fs: avoid cpu lockup
  f2fs: include seq_file.h for sysfs.c
  f2fs: Don't clear SGID when inheriting ACLs
  f2fs: remove extra inode_unlock() in error path
  fscrypt: add support for AES-128-CBC
  fscrypt: inline fscrypt_free_filename()
  f2fs: make more close to v4.13-rc1
  f2fs: support plain user/group quota
  f2fs: avoid deadlock caused by lock order of page and lock_op
  f2fs: use spin_{,un}lock_irq{save,restore}
  f2fs: relax migratepage for atomic written page
  f2fs: don't count inode block in in-memory inode.i_blocks
  Revert "f2fs: fix to clean previous mount option when remount_fs"
  f2fs: do not set LOST_PINO for renamed dir
  f2fs: do not set LOST_PINO for newly created dir
  f2fs: skip ->writepages for {mete,node}_inode during recovery
  f2fs: introduce __check_sit_bitmap
  f2fs: stop gc/discard thread in prior during umount
  f2fs: introduce reserved_blocks in sysfs
  f2fs: avoid redundant f2fs_flush after remount
  f2fs: report # of free inodes more precisely
  f2fs: add ioctl to do gc with target block address
  f2fs: don't need to check encrypted inode for partial truncation
  f2fs: measure inode.i_blocks as generic filesystem
  f2fs: set CP_TRIMMED_FLAG correctly
  f2fs: require key for truncate(2) of encrypted file
  f2fs: move sysfs code from super.c to fs/f2fs/sysfs.c
  f2fs: clean up sysfs codes
  f2fs: fix wrong error number of fill_super
  f2fs: fix to show injection rate in ->show_options
  f2fs: Fix a return value in case of error in 'f2fs_fill_super'
  f2fs: use proper variable name
  f2fs: fix to avoid panic when encountering corrupt node
  f2fs: don't track newly allocated nat entry in list
  f2fs: add f2fs_bug_on in __remove_discard_cmd
  f2fs: introduce __wait_one_discard_bio
  f2fs: dax: fix races between page faults and truncating pages
  f2fs: simplify the way of calulating next nat address
  f2fs: sanity check size of nat and sit cache
  f2fs: fix a panic caused by NULL flush_cmd_control
  f2fs: remove the unnecessary cast for PTR_ERR
  f2fs: remove false-positive bug_on
  f2fs: Do not issue small discards in LFS mode
  f2fs: don't bother checking for encryption key in ->write_iter()
  f2fs: don't bother checking for encryption key in ->mmap()
  f2fs: wait discard IO completion without cmd_lock held
  f2fs: wake up all waiters in f2fs_submit_discard_endio
  f2fs: show more info if fail to issue discard
  f2fs: introduce io_list for serialize data/node IOs
  f2fs: split wio_mutex
  f2fs: combine huge num of discard rb tree consistence checks
  f2fs: fix a bug caused by NULL extent tree
  f2fs: try to freeze in gc and discard threads
  f2fs: add a new function get_ssr_cost
  f2fs: declare load_free_nid_bitmap static
  f2fs: avoid f2fs_lock_op for IPU writes
  f2fs: split bio cache
  f2fs: use fio instead of multiple parameters
  f2fs: remove unnecessary read cases in merged IO flow
  f2fs: use f2fs_submit_page_bio for ra_meta_pages
  f2fs: make sure f2fs_gc returns consistent errno
  f2fs: load inode's flag from disk
  f2fs: sanity check checkpoint segno and blkoff
  f2fs, block_dump: give WRITE direction to submit_bio
  fscrypt: correct collision claim for digested names
  f2fs: switch to using fscrypt_match_name()
  fscrypt: introduce helper function for filename matching
  fscrypt: fix context consistency check when key(s) unavailable
  fscrypt: Move key structure and constants to uapi
  fscrypt: remove fscrypt_symlink_data_len()
  fscrypt: remove unnecessary checks for NULL operations
  fscrypt: eliminate ->prepare_context() operation
  fscrypt: remove broken support for detecting keyring key revocation
  fscrypt: avoid collisions when presenting long encrypted filenames
  f2fs: check entire encrypted bigname when finding a dentry
  f2fs: sync f2fs_lookup() with ext4_lookup()
  f2fs: fix a mount fail for wrong next_scan_nid
  f2fs: relocate inode_{,un}lock in F2FS_IOC_SETFLAGS
  f2fs: show available_nids in f2fs/status
  f2fs: flush dirty nats periodically
  f2fs: introduce CP_TRIMMED_FLAG to avoid unneeded discard
  f2fs: allow cpc->reason to indicate more than one reason
  f2fs: release cp and dnode lock before IPU
  f2fs: shrink size of struct discard_cmd
  f2fs: don't hold cmd_lock during waiting discard command
  f2fs: nullify fio->encrypted_page for each writes
  f2fs: sanity check segment count
  f2fs: introduce valid_ipu_blkaddr to clean up
  f2fs: lookup extent cache first under IPU scenario
  f2fs: reconstruct code to write a data page
  f2fs: introduce __wait_discard_cmd
  f2fs: introduce __issue_discard_cmd
  f2fs: enable small discard by default
  f2fs: delay awaking discard thread
  f2fs: seperate read nat page from nat_tree_lock
  f2fs: fix multiple f2fs_add_link() having same name for inline dentry
  f2fs: skip encrypted inode in ASYNC IPU policy
  f2fs: fix out-of free segments
  f2fs: improve definition of statistic macros
  f2fs: assign allocation hint for warm/cold data
  f2fs: fix _IOW usage
  f2fs: add ioctl to flush data from faster device to cold area
  f2fs: introduce async IPU policy
  f2fs: add undiscard blocks stat
  f2fs: unlock cp_rwsem early for IPU writes
  f2fs: introduce __check_rb_tree_consistence
  f2fs: trace __submit_discard_cmd
  f2fs: in prior to issue big discard
  f2fs: clean up discard_cmd_control structure
  f2fs: use rb-tree to track pending discard commands
  f2fs: avoid dirty node pages in check_only recovery
  f2fs: fix not to set fsync/dentry mark
  f2fs: allocate hot_data for atomic writes
  f2fs: give time to flush dirty pages for checkpoint
  f2fs: fix fs corruption due to zero inode page
  f2fs: shrink blk plug region
  f2fs: extract rb-tree operation infrastructure
  f2fs: avoid frequent checkpoint during f2fs_gc
  f2fs: clean up some macros in terms of GET_SEGNO
  f2fs: clean up get_valid_blocks with consistent parameter
  f2fs: use segment number for get_valid_blocks
  f2fs: guard macro variables with braces
  f2fs: fix comment on f2fs_flush_merged_bios() after 86531d6b
  f2fs: prevent waiter encountering incorrect discard states
  f2fs: introduce f2fs_wait_discard_bios
  f2fs: split discard_cmd_list
  Revert "f2fs: put allocate_segment after refresh_sit_entry"
  f2fs: split make_dentry_ptr() into block and inline versions
  f2fs: submit bio of in-place-update pages
  f2fs: remove the redundant variable definition
  f2fs: avoid IO split due to mixed WB_SYNC_ALL and WB_SYNC_NONE
  f2fs: write small sized IO to hot log
  f2fs: use bitmap in discard_entry
  f2fs: clean up destroy_discard_cmd_control
  f2fs: count discard command entry
  f2fs: show issued flush/discard count
  f2fs: relax node version check for victim data in gc
  f2fs: start SSR much eariler to avoid FG_GC
  f2fs: allocate node and hot data in the beginning of partition
  f2fs: fix wrong max cost initialization
  f2fs: allow write page cache when writting cp
  f2fs: don't reserve additional space in xattr block
  f2fs: clean up xattr operation
  f2fs: don't track volatile file in dirty inode list
  f2fs: show the max number of volatile operations
  f2fs: fix race condition in between free nid allocator/initializer
  f2fs: use set_page_private marcro in f2fs_trace_pid
  f2fs: fix recording invalid last_victim
  f2fs: more reasonable mem_size calculating of ino_entry
  f2fs: calculate the f2fs_stat_info into base_mem
  f2fs: avoid stat_inc_atomic_write for non-atomic file
  f2fs: sanity check of crc_offset from raw checkpoint
  f2fs: cleanup the disk level filename updating
  f2fs: cover update_free_nid_bitmap with nid_list_lock
  f2fs: fix bad prefetchw of NULL page
  f2fs: clear FI_DATA_EXIST flag in truncate_inline_inode
  f2fs: move mnt_want_write_file after arguments checking
  f2fs: check new size by inode_newsize_ok in f2fs_insert_range
  f2fs: avoid copy date to user-space if move file range fail
  f2fs: drop duplicate new_size assign in f2fs_zero_range
  f2fs: adjust the way of calculating nat block
  f2fs: add fault injection on f2fs_truncate
  f2fs: check range before defragment
  f2fs: use parameter max_items instead of PIDVEC_SIZE
  f2fs: add a punch discard command function
  f2fs: allocate a bio for discarding when actually issuing it
  f2fs: skip writeback meta pages if cp_mutex acquire failed
  f2fs: show more precise message on orphan recovery failure
  f2fs: remove dead macro PGOFS_OF_NEXT_DNODE
  f2fs: drop duplicate radix tree lookup of nat_entry_set
  f2fs: make sure trace all f2fs_issue_flush
  f2fs: don't allow volatile writes for non-regular file
  f2fs: don't allow atomic writes for not regular files
  f2fs: fix stale ATOMIC_WRITTEN_PAGE private pointer
  f2fs: build stat_info before orphan inode recovery
  f2fs: fix the fault of calculating blkstart twice
  f2fs: fix the fault of checking F2FS_LINK_MAX for rename inode
  f2fs: don't allow to get pino when filename is encrypted
  f2fs: fix wrong error injection for evict_inode
  f2fs: le32_to_cpu for ckpt->cp_pack_total_block_count
  f2fs: le16_to_cpu for xattr->e_value_size
  f2fs: don't need to invalidate wrong node page
  f2fs: fix an error return value in truncate_partial_data_page
  f2fs: combine nat_bits and free_nid_bitmap cache
  f2fs: skip scanning free nid bitmap of full NAT blocks
  f2fs: use __set{__clear}_bit_le
  f2fs: update_free_nid_bitmap() can be static
  f2fs: __update_nat_bits() can be static
  f2fs: le16_to_cpu for xattr->e_value_size
  f2fs: don't overwrite node block by SSR
  f2fs: don't need to invalidate wrong node page
  f2fs: fix an error return value in truncate_partial_data_page
  fscrypt: catch up to v4.11-rc1
  f2fs: avoid to flush nat journal entries
  f2fs: avoid to issue redundant discard commands
  f2fs: fix a plint compile warning
  f2fs: add f2fs_drop_inode tracepoint
  f2fs: Fix zoned block device support
  f2fs: remove redundant set_page_dirty()
  f2fs: fix to enlarge size of write_io_dummy mempool
  f2fs: fix memory leak of write_io_dummy mempool during umount
  f2fs: fix to update F2FS_{CP_}WB_DATA count correctly
  f2fs: use MAX_FREE_NIDS for the free nids target
  f2fs: introduce free nid bitmap
  f2fs: new helper cur_cp_crc() getting crc in f2fs_checkpoint
  f2fs: update the comment of default nr_pages to skipping
  f2fs: drop the duplicate pval in f2fs_getxattr
  f2fs: Don't update the xattr data that same as the exist
  f2fs: kill __is_extent_same
  f2fs: avoid bggc->fggc when enough free segments are avaliable after cp
  f2fs: select target segment with closer temperature in SSR mode
  f2fs: show simple call stack in fault injection message
  fscrypt: catch fscrypto_get_policy in v4.10-rc6
  f2fs: use __clear_bit_le
  f2fs: no need lock_op in f2fs_write_inline_data
  f2fs: add bitmaps for empty or full NAT blocks
  f2fs: replace rw semaphore extent_tree_lock with mutex lock
  f2fs: avoid m_flags overlay when allocating more data blocks
  f2fs: remove unsafe bitmap checking
  f2fs: init local extent_info to avoid stale stack info in tp
  f2fs: remove unnecessary condition check for write_checkpoint in f2fs_gc
  f2fs: do SSR for node segments more aggresively
  f2fs: check discard alignment only for SEQWRITE zones
  f2fs: wait for discard completion after submission
  f2fs: much larger batched trim_fs job
  f2fs: avoid very large discard command
  f2fs: find data segments across all the types
  f2fs: do SSR in higher priority
  f2fs: do SSR for data when there is enough free space
  f2fs: node segment is prior to data segment selected victim
  f2fs: put allocate_segment after refresh_sit_entry
  f2fs: add ovp valid_blocks check for bg gc victim to fg_gc
  f2fs: do not wait for writeback in write_begin
  f2fs: replace __get_victim by dirty_segments in FG_GC
  f2fs: fix multiple f2fs_add_link() calls having same name
  f2fs: show actual device info in tracepoints
  f2fs: use SSR for warm node as well
  f2fs: enable inline_xattr by default
  f2fs: introduce noinline_xattr mount option
  f2fs: avoid reading NAT page by get_node_info
  f2fs: remove build_free_nids() during checkpoint
  f2fs: change recovery policy of xattr node block
  f2fs: super: constify fscrypt_operations structure
  f2fs: show checkpoint version at mount time
  f2fs: remove preflush for nobarrier case
  f2fs: check last page index in cached bio to decide submission
  f2fs: check io submission more precisely
  f2fs: fix trim_fs assignment
  Revert "f2fs: remove batched discard in f2fs_trim_fs"
  f2fs: fix missing bio_alloc(1)
  f2fs: call internal __write_data_page directly
  f2fs: avoid out-of-order execution of atomic writes
  f2fs: move write_node_page above fsync_node_pages
  f2fs: move flush tracepoint
  f2fs: show # of APPEND and UPDATE inodes
  f2fs: fix 446 coding style warnings in f2fs.h
  f2fs: fix 3 coding style errors in f2fs.h
  f2fs: declare missing static function
  f2fs: show the fault injection mount option
  f2fs: fix null pointer dereference when issuing flush in ->fsync
  f2fs: fix to avoid overflow when left shifting page offset
  f2fs: enhance lookup xattr
  f2fs: fix a dead loop in f2fs_fiemap()
  f2fs: do not preallocate blocks which has wrong buffer
  f2fs: show # of on-going flush and discard bios
  f2fs: add a kernel thread to issue discard commands asynchronously
  f2fs: factor out discard command info into discard_cmd_control
  f2fs: remove batched discard in f2fs_trim_fs
  f2fs: reorganize stat information
  f2fs: clean up flush/discard command namings
  f2fs: check in-memory sit version bitmap
  f2fs: check in-memory nat version bitmap
  f2fs: check in-memory block bitmap
  f2fs: introduce FI_ATOMIC_COMMIT
  f2fs: clean up with list_{first, last}_entry
  f2fs: return fs_trim if there is no candidate
  f2fs: avoid needless checkpoint in f2fs_trim_fs
  f2fs: relax async discard commands more
  f2fs: drop exist_data for inline_data when truncated to 0
  f2fs: don't allow encrypted operations without keys
  f2fs: show the max number of atomic operations
  f2fs: get io size bit from mount option
  f2fs: support IO alignment for DATA and NODE writes
  f2fs: add submit_bio tracepoint
  f2fs: reassign new segment for mode=lfs
  f2fs: fix a missing discard prefree segments
  f2fs: use rb_entry_safe
  f2fs: add a case of no need to read a page in write begin
  f2fs: fix a problem of using memory after free
  f2fs: remove unneeded condition
  f2fs: don't cache nat entry if out of memory
  f2fs: remove unused values in recover_fsync_data
  f2fs: support async discard based on v4.9
  f2fs: resolve op and op_flags confilcts
  f2fs: remove wrong backported codes
  f2fs: fix a missing size change in f2fs_setattr
  fs/super.c: fix race between freeze_super() and thaw_super()
  scripts/tags.sh: catch 4.9-rc6
  f2fs: fix to access nullified flush_cmd_control pointer
  f2fs: free meta pages if sanity check for ckpt is failed
  f2fs: detect wrong layout
  f2fs: call sync_fs when f2fs is idle
  Revert "f2fs: use percpu_counter for # of dirty pages in inode"
  f2fs: return AOP_WRITEPAGE_ACTIVATE for writepage
  f2fs: do not activate auto_recovery for fallocated i_size
  f2fs: fix 32-bit build
  f2fs: set ->owner for debugfs status file's file_operations
  f2fs: fix incorrect free inode count in ->statfs
  f2fs: drop duplicate header timer.h
  f2fs: fix wrong AUTO_RECOVER condition
  f2fs: do not recover i_size if it's valid
  f2fs: fix fdatasync
  f2fs: fix to account total free nid correctly
  f2fs: fix an infinite loop when flush nodes in cp
  f2fs: don't wait writeback for datas during checkpoint
  f2fs: fix wrong written_valid_blocks counting
  f2fs: avoid BG_GC in f2fs_balance_fs
  f2fs: fix redundant block allocation
  f2fs: use err for f2fs_preallocate_blocks
  f2fs: support multiple devices
  f2fs: allow dio read for LFS mode
  f2fs: revert segment allocation for direct IO
  f2fs: return directly if block has been removed from the victim
  Revert "f2fs: do not recover from previous remained wrong dnodes"
  f2fs: remove checkpoint in f2fs_freeze
  f2fs: assign segments correctly for direct_io
  f2fs: fix wrong i_atime recovery
  f2fs: record inode updating status correctly
  f2fs: Trace reset zone events
  f2fs: Reset sequential zones on zoned block devices
  f2fs: Cache zoned block devices zone type
  f2fs: Do not allow adaptive mode for host-managed zoned block devices
  f2fs: Always enable discard for zoned blocks devices
  f2fs: Suppress discard warning message for zoned block devices
  f2fs: Check zoned block feature for host-managed zoned block devices
  f2fs: Use generic zoned block device terminology
  f2fs: Add missing break in switch-case
  f2fs: avoid infinite loop in the EIO case on recover_orphan_inodes
  f2fs: report error of f2fs_fill_dentries
  fs/crypto: catch up 4.9-rc6
  f2fs: hide a maybe-uninitialized warning
  f2fs: remove percpu_count due to performance regression
  f2fs: make clean inodes when flushing inode page
  f2fs: keep dirty inodes selectively for checkpoint
  f2fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps
  f2fs: use BIO_MAX_PAGES for bio allocation
  f2fs: declare static function for __build_free_nids
  f2fs: call f2fs_balance_fs for setattr
  f2fs: count dirty inodes to flush node pages during checkpoint
  f2fs: avoid casted negative value as shrink count
  f2fs: don't interrupt free nids building during nid allocation
  f2fs: clean up free nid list operations
  f2fs: split free nid list
  f2fs: clear nlink if fail to add_link
  f2fs: fix sparse warnings
  f2fs: fix error handling in fsync_node_pages
  f2fs: fix to update largest extent under lock
  f2fs: be aware of extent beyond EOF in fiemap
  f2fs: don't miss any f2fs_balance_fs cases
  f2fs: add missing f2fs_balance_fs in f2fs_zero_range
  f2fs: give a chance to detach from dirty list
  f2fs: fix to release discard entries during checkpoint
  f2fs: exclude free nids building and allocation
  f2fs: fix to determine start_cp_addr by sbi->cur_cp_pack
  f2fs: fix overflow due to condition check order
  posix_acl: Clear SGID bit when setting file permissions
  f2fs: fix wrong sum_page pointer in f2fs_gc
  f2fs: backport from (4c1fad64 - Merge tag 'for-f2fs-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs)

Change-Id: I6c7208efc63ce7b13f26f0ec1cd3c8aef410eff0
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
2018-08-03 16:59:20 +05:30
Jaegeuk Kim
8ddb600e03 Merge remote-tracking branch 'origin/upstream-f2fs-stable-linux-4.4.y' into android-4.4
6944da0a68 treewide: Use array_size in f2fs_kvzalloc()
f15443db99 treewide: Use array_size() in f2fs_kzalloc()
3ea03ea4bd treewide: Use array_size() in f2fs_kmalloc()
c41203299a overflow.h: Add allocation size calculation helpers
d400752f54 f2fs: fix to clear FI_VOLATILE_FILE correctly
853e7339b6 f2fs: let sync node IO interrupt async one
6a4540cf19 f2fs: don't change wbc->sync_mode
588ecdfd7d f2fs: fix to update mtime correctly
1ae5aadab1 fs: f2fs: insert space around that ':' and ', '
39ee53e223 fs: f2fs: add missing blank lines after declarations
d5b4710fcf fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
c35da89531 f2fs: clean up symbol namespace
fcf37e16f3 f2fs: make set_de_type() static
5d1633aa10 f2fs: make __f2fs_write_data_pages() static
cc8093af7c f2fs: fix to avoid accessing cross the boundary
b7f5594670 f2fs: fix to let caller retry allocating block address
e48fcd8576 disable loading f2fs module on PAGE_SIZE > 4KB
02afc275a5 f2fs: fix error path of move_data_page
0291bd36d0 f2fs: don't drop dentry pages after fs shutdown
a1259450b6 f2fs: fix to avoid race during access gc_thread pointer
d2e0f2f786 f2fs: clean up with clear_radix_tree_dirty_tag
c74034518f f2fs: fix to don't trigger writeback during recovery
e72a2cca82 f2fs: clear discard_wake earlier
b25a1872e9 f2fs: let discard thread wait a little longer if dev is busy
b125dfb20d f2fs: avoid stucking GC due to atomic write
405909e7f5 f2fs: introduce sbi->gc_mode to determine the policy
1f62e4702a f2fs: keep migration IO order in LFS mode
c4408c2387 f2fs: fix to wait page writeback during revoking atomic write
9db5be4af8 f2fs: Fix deadlock in shutdown ioctl
ed74404955 f2fs: detect synchronous writeback more earlier
91e7d9d2dd mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
feb94dc829 ceph: use pagevec_lookup_range_nr_tag()
f3aa4a25b8 mm: add variant of pagevec_lookup_range_tag() taking number of pages
8914877e37 mm: use pagevec_lookup_range_tag() in write_cache_pages()
26778b87a0 mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
94f1b99298 nilfs2: use pagevec_lookup_range_tag()
160355d69f gfs2: use pagevec_lookup_range_tag()
564108e83a f2fs: use find_get_pages_tag() for looking up single page
6cf6fb8645 f2fs: simplify page iteration loops
a05d8a6a2b f2fs: use pagevec_lookup_range_tag()
18a4848ffd ext4: use pagevec_lookup_range_tag()
1c7be24f65 ceph: use pagevec_lookup_range_tag()
e25fadabb5 btrfs: use pagevec_lookup_range_tag()
bf9510b162 mm: implement find_get_pages_range_tag()
461247b21f f2fs: clean up with is_valid_blkaddr()
a5d0ccbc18 f2fs: fix to initialize min_mtime with ULLONG_MAX
9bb4d22cf5 f2fs: fix to let checkpoint guarantee atomic page persistence
cdcf2b3e25 f2fs: fix to initialize i_current_depth according to inode type
331ae0c25b Revert "f2fs: add ovp valid_blocks check for bg gc victim to fg_gc"
2494cc7c0b f2fs: don't drop any page on f2fs_cp_error() case
0037c639e6 f2fs: fix spelling mistake: "extenstion" -> "extension"
2bba5b8eb8 f2fs: enhance sanity_check_raw_super() to avoid potential overflows
9bb86b63dc f2fs: treat volatile file's data as hot one
2cf6459036 f2fs: introduce release_discard_addr() for cleanup
03279ce90b f2fs: fix potential overflow
f46eddc4da f2fs: rename dio_rwsem to i_gc_rwsem
bb01582453 f2fs: move mnt_want_write_file after range check
8bb9a8da75 f2fs: fix missing clear FI_NO_PREALLOC in some error case
cb38cc4e1d f2fs: enforce fsync_mode=strict for renamed directory
26bf4e8a96 f2fs: sanity check for total valid node blocks
78f8b0f46f f2fs: sanity check on sit entry
ab758ada22 f2fs: avoid bug_on on corrupted inode
1a5d1966c0 f2fs: give message and set need_fsck given broken node id
b025f6dfc0 f2fs: clean up commit_inmem_pages()
7aff5c69da f2fs: do not check F2FS_INLINE_DOTS in recover
23d00b0287 f2fs: remove duplicated dquot_initialize and fix error handling
937f4ef79e f2fs: stop issue discard if something wrong with f2fs
a6d74bb282 f2fs: fix return value in f2fs_ioc_commit_atomic_write
258489ec52 f2fs: allocate hot_data for atomic write more strictly
aa857e0f3b f2fs: check if inmem_pages list is empty correctly
9d77ded0a7 f2fs: fix race in between GC and atomic open
0d17eb90b5 f2fs: change le32 to le16 of f2fs_inode->i_extra_size
ea2813111f f2fs: check cur_valid_map_mir & raw_sit block count when flush sit entries
9190cadf38 f2fs: correct return value of f2fs_trim_fs
17f85d0708 f2fs: fix to show missing bits in FS_IOC_GETFLAGS
3e90db63fc f2fs: remove unneeded F2FS_PROJINHERIT_FL
298032d4d4 f2fs: don't use GFP_ZERO for page caches
fdf61219dc f2fs: issue all big range discards in umount process
cd79eb2b5e f2fs: remove redundant block plug
ec034d0f14 f2fs: remove unmatched zero_user_segment when convert inline dentry
71aaced0e1 f2fs: introduce private inode status mapping
e7724207f7 fscrypt: log the crypto algorithm implementations
4cbda579cd crypto: api - Add crypto_type_has_alg helper
b24dcaae87 crypto: skcipher - Add low-level skcipher interface
a9146e4235 crypto: skcipher - Add helper to retrieve driver name
a0ca4bdf47 crypto: skcipher - Add default key size helper
eb13e0b692 fscrypt: add Speck128/256 support
27a0e77380 fscrypt: only derive the needed portion of the key
f68a71fa8f fscrypt: separate key lookup from key derivation
52359cf4fd fscrypt: use a common logging function
ff8e7c745e fscrypt: remove internal key size constants
7149dd4d39 fscrypt: remove unnecessary check for non-logon key type
56446c9142 fscrypt: make fscrypt_operations.max_namelen an integer
f572a22ef9 fscrypt: drop empty name check from fname_decrypt()
0077eff1d2 fscrypt: drop max_namelen check from fname_decrypt()
3f7af9d27f fscrypt: don't special-case EOPNOTSUPP from fscrypt_get_encryption_info()
52c51f7b7b fscrypt: don't clear flags on crypto transform
89b7fb8298 fscrypt: remove stale comment from fscrypt_d_revalidate()
d56de4e926 fscrypt: remove error messages for skcipher_request_alloc() failure
f68d3b84ae fscrypt: remove unnecessary NULL check when allocating skcipher
fb10231825 fscrypt: clean up after fscrypt_prepare_lookup() conversions
39b1444906 fscrypt: use unbound workqueue for decryption

Change-Id: Ied79ecd97385c05ef26e6b7b24d250eee9ec4e47
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
2018-07-30 17:25:04 -07:00
Srinivasarao P
f77d7178aa Merge android-4.4.141 (b1bad9e) into msm-4.4
* refs/heads/tmp-b1bad9e
  Linux 4.4.141
  loop: remember whether sysfs_create_group() was done
  RDMA/ucm: Mark UCM interface as BROKEN
  PM / hibernate: Fix oops at snapshot_write()
  loop: add recursion validation to LOOP_CHANGE_FD
  netfilter: x_tables: initialise match/target check parameter struct
  netfilter: nf_queue: augment nfqa_cfg_policy
  uprobes/x86: Remove incorrect WARN_ON() in uprobe_init_insn()
  x86/cpufeature: Add helper macro for mask check macros
  x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated
  x86/cpufeature: Update cpufeaure macros
  x86/cpufeature, x86/mm/pkeys: Fix broken compile-time disabling of pkeys
  x86/cpu: Add detection of AMD RAS Capabilities
  x86/mm/pkeys: Fix mismerge of protection keys CPUID bits
  x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitions
  x86/cpufeature: Speed up cpu_feature_enabled()
  x86/boot: Simplify kernel load address alignment check
  x86/vdso: Use static_cpu_has()
  x86/alternatives: Discard dynamic check after init
  x86/alternatives: Add an auxilary section
  x86/cpufeature: Get rid of the non-asm goto variant
  x86/cpufeature: Replace the old static_cpu_has() with safe variant
  x86/cpufeature: Carve out X86_FEATURE_*
  x86/headers: Don't include asm/processor.h in asm/atomic.h
  x86/fpu: Get rid of xstate_fault()
  x86/fpu: Add an XSTATE_OP() macro
  x86/cpu: Provide a config option to disable static_cpu_has
  x86/cpufeature: Cleanup get_cpu_cap()
  x86/cpufeature: Move some of the scattered feature bits to x86_capability
  iw_cxgb4: correctly enforce the max reg_mr depth
  tools build: fix # escaping in .cmd files for future Make
  Fix up non-directory creation in SGID directories
  HID: usbhid: add quirk for innomedia INNEX GENESIS/ATARI adapter
  xhci: xhci-mem: off by one in xhci_stream_id_to_ring()
  usb: quirks: add delay quirks for Corsair Strafe
  USB: serial: mos7840: fix status-register error handling
  USB: yurex: fix out-of-bounds uaccess in read handler
  USB: serial: keyspan_pda: fix modem-status error handling
  USB: serial: cp210x: add another USB ID for Qivicon ZigBee stick
  USB: serial: ch341: fix type promotion bug in ch341_control_in()
  ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS
  vmw_balloon: fix inflation with batching
  ibmasm: don't write out of bounds in read handler
  MIPS: Fix ioremap() RAM check
  cpufreq: Kconfig: Remove CPU_FREQ_DEFAULT_GOV_SCHED

Change-Id: I0909a2917621f2384cdfe27078577cc2c06b9612
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
2018-07-24 12:10:47 +05:30
Greg Kroah-Hartman
b1bad9e232 This is the 4.4.141 stable release
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Merge 4.4.141 into android-4.4

Changes in 4.4.141
	MIPS: Fix ioremap() RAM check
	ibmasm: don't write out of bounds in read handler
	vmw_balloon: fix inflation with batching
	ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS
	USB: serial: ch341: fix type promotion bug in ch341_control_in()
	USB: serial: cp210x: add another USB ID for Qivicon ZigBee stick
	USB: serial: keyspan_pda: fix modem-status error handling
	USB: yurex: fix out-of-bounds uaccess in read handler
	USB: serial: mos7840: fix status-register error handling
	usb: quirks: add delay quirks for Corsair Strafe
	xhci: xhci-mem: off by one in xhci_stream_id_to_ring()
	HID: usbhid: add quirk for innomedia INNEX GENESIS/ATARI adapter
	Fix up non-directory creation in SGID directories
	tools build: fix # escaping in .cmd files for future Make
	iw_cxgb4: correctly enforce the max reg_mr depth
	x86/cpufeature: Move some of the scattered feature bits to x86_capability
	x86/cpufeature: Cleanup get_cpu_cap()
	x86/cpu: Provide a config option to disable static_cpu_has
	x86/fpu: Add an XSTATE_OP() macro
	x86/fpu: Get rid of xstate_fault()
	x86/headers: Don't include asm/processor.h in asm/atomic.h
	x86/cpufeature: Carve out X86_FEATURE_*
	x86/cpufeature: Replace the old static_cpu_has() with safe variant
	x86/cpufeature: Get rid of the non-asm goto variant
	x86/alternatives: Add an auxilary section
	x86/alternatives: Discard dynamic check after init
	x86/vdso: Use static_cpu_has()
	x86/boot: Simplify kernel load address alignment check
	x86/cpufeature: Speed up cpu_feature_enabled()
	x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitions
	x86/mm/pkeys: Fix mismerge of protection keys CPUID bits
	x86/cpu: Add detection of AMD RAS Capabilities
	x86/cpufeature, x86/mm/pkeys: Fix broken compile-time disabling of pkeys
	x86/cpufeature: Update cpufeaure macros
	x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated
	x86/cpufeature: Add helper macro for mask check macros
	uprobes/x86: Remove incorrect WARN_ON() in uprobe_init_insn()
	netfilter: nf_queue: augment nfqa_cfg_policy
	netfilter: x_tables: initialise match/target check parameter struct
	loop: add recursion validation to LOOP_CHANGE_FD
	PM / hibernate: Fix oops at snapshot_write()
	RDMA/ucm: Mark UCM interface as BROKEN
	loop: remember whether sysfs_create_group() was done
	Linux 4.4.141

Change-Id: I777b39a0ede95b58638add97756d6beaf4a9d154
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-07-17 12:15:52 +02:00
Borislav Petkov
2d45dae0af x86/cpufeature: Replace the old static_cpu_has() with safe variant
commit bc696ca05f5a8927329ec276a892341e006b00ba upstream

So the old one didn't work properly before alternatives had run.
And it was supposed to provide an optimized JMP because the
assumption was that the offset it is jumping to is within a
signed byte and thus a two-byte JMP.

So I did an x86_64 allyesconfig build and dumped all possible
sites where static_cpu_has() was used. The optimization amounted
to all in all 12(!) places where static_cpu_has() had generated
a 2-byte JMP. Which has saved us a whopping 36 bytes!

This clearly is not worth the trouble so we can remove it. The
only place where the optimization might count - in __switch_to()
- we will handle differently. But that's not subject of this
patch.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1453842730-28463-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa@csail.mit.edu>
Reviewed-by: Matt Helsley (VMware) <matt.helsley@gmail.com>
Reviewed-by: Alexey Makhalov <amakhalov@vmware.com>
Reviewed-by: Bo Gan <ganb@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-17 11:31:44 +02:00
Linux Build Service Account
4049db73f1 Merge "Merge android-4.4.139 (7ba5557) into msm-4.4" 2018-07-10 22:43:57 -07:00
Jan Kara
91e7d9d2dd mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
All users of pagevec_lookup() and pagevec_lookup_range() now pass
PAGEVEC_SIZE as a desired number of pages.  Just drop the argument.

Link: http://lkml.kernel.org/r/20171009151359.31984-15-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-08 17:37:49 -07:00
Jan Kara
e25fadabb5 btrfs: use pagevec_lookup_range_tag()
We want only pages from given range in btree_write_cache_pages() and
extent_write_cache_pages().  Use pagevec_lookup_range_tag() instead of
pagevec_lookup_tag() and remove unnecessary code.

Link: http://lkml.kernel.org/r/20171009151359.31984-3-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-08 17:32:52 -07:00
Gustavo Solaira
a97cb8dfea Revert "do d_instantiate/unlock_new_inode combinations safely"
This reverts commit 03bb758894.
Causes oops with security smack enabled.

Change-Id: I14fb2b0841c6b71940bd3f08bd4b49b1d7b039a3
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
2018-07-03 16:23:54 -07:00
Greg Kroah-Hartman
7ba5557097 This is the 4.4.139 stable release
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Merge 4.4.139 into android-4.4

Changes in 4.4.139
	xfrm6: avoid potential infinite loop in _decode_session6()
	netfilter: ebtables: handle string from userspace with care
	ipvs: fix buffer overflow with sync daemon and service
	atm: zatm: fix memcmp casting
	net: qmi_wwan: Add Netgear Aircard 779S
	net/sonic: Use dma_mapping_error()
	Revert "Btrfs: fix scrub to repair raid6 corruption"
	tcp: do not overshoot window_clamp in tcp_rcv_space_adjust()
	Btrfs: make raid6 rebuild retry more
	usb: musb: fix remote wakeup racing with suspend
	bonding: re-evaluate force_primary when the primary slave name changes
	tcp: verify the checksum of the first data segment in a new connection
	ext4: update mtime in ext4_punch_hole even if no blocks are released
	ext4: fix fencepost error in check for inode count overflow during resize
	driver core: Don't ignore class_dir_create_and_add() failure.
	btrfs: scrub: Don't use inode pages for device replace
	ALSA: hda - Handle kzalloc() failure in snd_hda_attach_pcm_stream()
	ALSA: hda: add dock and led support for HP EliteBook 830 G5
	ALSA: hda: add dock and led support for HP ProBook 640 G4
	cpufreq: Fix new policy initialization during limits updates via sysfs
	libata: zpodd: make arrays cdb static, reduces object code size
	libata: zpodd: small read overflow in eject_tray()
	libata: Drop SanDisk SD7UB3Q*G1001 NOLPM quirk
	w1: mxc_w1: Enable clock before calling clk_get_rate() on it
	fs/binfmt_misc.c: do not allow offset overflow
	x86/spectre_v1: Disable compiler optimizations over array_index_mask_nospec()
	m68k/mm: Adjust VM area to be unmapped by gap size for __iounmap()
	serial: sh-sci: Use spin_{try}lock_irqsave instead of open coding version
	signal/xtensa: Consistenly use SIGBUS in do_unaligned_user
	usb: do not reset if a low-speed or full-speed device timed out
	1wire: family module autoload fails because of upper/lower case mismatch.
	ASoC: dapm: delete dapm_kcontrol_data paths list before freeing it
	ASoC: cirrus: i2s: Fix LRCLK configuration
	ASoC: cirrus: i2s: Fix {TX|RX}LinCtrlData setup
	lib/vsprintf: Remove atomic-unsafe support for %pCr
	mips: ftrace: fix static function graph tracing
	branch-check: fix long->int truncation when profiling branches
	ipmi:bt: Set the timeout before doing a capabilities check
	Bluetooth: hci_qca: Avoid missing rampatch failure with userspace fw loader
	fuse: atomic_o_trunc should truncate pagecache
	fuse: don't keep dead fuse_conn at fuse_fill_super().
	fuse: fix control dir setup and teardown
	powerpc/mm/hash: Add missing isync prior to kernel stack SLB switch
	powerpc/ptrace: Fix setting 512B aligned breakpoints with PTRACE_SET_DEBUGREG
	powerpc/ptrace: Fix enforcement of DAWR constraints
	cpuidle: powernv: Fix promotion from snooze if next state disabled
	powerpc/fadump: Unregister fadump on kexec down path.
	ARM: 8764/1: kgdb: fix NUMREGBYTES so that gdb_regs[] is the correct size
	of: unittest: for strings, account for trailing \0 in property length field
	IB/qib: Fix DMA api warning with debug kernel
	RDMA/mlx4: Discard unknown SQP work requests
	mtd: cfi_cmdset_0002: Change write buffer to check correct value
	mtd: cfi_cmdset_0002: Use right chip in do_ppb_xxlock()
	mtd: cfi_cmdset_0002: fix SEGV unlocking multiple chips
	mtd: cfi_cmdset_0002: Fix unlocking requests crossing a chip boudary
	mtd: cfi_cmdset_0002: Avoid walking all chips when unlocking.
	MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum
	PCI: pciehp: Clear Presence Detect and Data Link Layer Status Changed on resume
	MIPS: io: Add barrier after register read in inX()
	time: Make sure jiffies_to_msecs() preserves non-zero time periods
	Btrfs: fix clone vs chattr NODATASUM race
	iio:buffer: make length types match kfifo types
	scsi: qla2xxx: Fix setting lower transfer speed if GPSC fails
	scsi: zfcp: fix missing SCSI trace for result of eh_host_reset_handler
	scsi: zfcp: fix missing SCSI trace for retry of abort / scsi_eh TMF
	scsi: zfcp: fix misleading REC trigger trace where erp_action setup failed
	scsi: zfcp: fix missing REC trigger trace on terminate_rport_io early return
	scsi: zfcp: fix missing REC trigger trace on terminate_rport_io for ERP_FAILED
	scsi: zfcp: fix missing REC trigger trace for all objects in ERP_FAILED
	scsi: zfcp: fix missing REC trigger trace on enqueue without ERP thread
	linvdimm, pmem: Preserve read-only setting for pmem devices
	md: fix two problems with setting the "re-add" device state.
	ubi: fastmap: Cancel work upon detach
	UBIFS: Fix potential integer overflow in allocation
	xfrm: Ignore socket policies when rebuilding hash tables
	xfrm: skip policies marked as dead while rehashing
	backlight: as3711_bl: Fix Device Tree node lookup
	backlight: max8925_bl: Fix Device Tree node lookup
	backlight: tps65217_bl: Fix Device Tree node lookup
	mfd: intel-lpss: Program REMAP register in PIO mode
	perf tools: Fix symbol and object code resolution for vdso32 and vdsox32
	perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACING
	perf intel-pt: Fix decoding to accept CBR between FUP and corresponding TIP
	perf intel-pt: Fix MTC timing after overflow
	perf intel-pt: Fix "Unexpected indirect branch" error
	perf intel-pt: Fix packet decoding of CYC packets
	media: v4l2-compat-ioctl32: prevent go past max size
	media: cx231xx: Add support for AverMedia DVD EZMaker 7
	media: dvb_frontend: fix locking issues at dvb_frontend_get_event()
	nfsd: restrict rd_maxcount to svc_max_payload in nfsd_encode_readdir
	NFSv4: Fix possible 1-byte stack overflow in nfs_idmap_read_and_verify_message
	video: uvesafb: Fix integer overflow in allocation
	Input: elan_i2c - add ELAN0618 (Lenovo v330 15IKB) ACPI ID
	xen: Remove unnecessary BUG_ON from __unbind_from_irq()
	udf: Detect incorrect directory size
	Input: elan_i2c_smbus - fix more potential stack buffer overflows
	Input: elantech - enable middle button of touchpads on ThinkPad P52
	Input: elantech - fix V4 report decoding for module with middle key
	ALSA: hda/realtek - Add a quirk for FSC ESPRIMO U9210
	Btrfs: fix unexpected cow in run_delalloc_nocow
	spi: Fix scatterlist elements size in spi_map_buf
	block: Fix transfer when chunk sectors exceeds max
	dm thin: handle running out of data space vs concurrent discard
	cdc_ncm: avoid padding beyond end of skb
	Bluetooth: Fix connection if directed advertising and privacy is used
	Linux 4.4.139

Change-Id: I93013bedf2ebe3e6a8718972d8854723609963cc
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-07-03 18:23:34 +02:00
Liu Bo
0e1bd0206b Btrfs: fix unexpected cow in run_delalloc_nocow
commit 5811375325420052fcadd944792a416a43072b7f upstream.

Fstests generic/475 provides a way to fail metadata reads while
checking if checksum exists for the inode inside run_delalloc_nocow(),
and csum_exist_in_range() interprets error (-EIO) as inode having
checksum and makes its caller enter the cow path.

In case of free space inode, this ends up with a warning in
cow_file_range().

The same problem applies to btrfs_cross_ref_exist() since it may also
read metadata in between.

With this, run_delalloc_nocow() bails out when errors occur at the two
places.

cc: <stable@vger.kernel.org> v2.6.28+
Fixes: 17d217fe97 ("Btrfs: fix nodatasum handling in balancing code")
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:21:35 +02:00
Omar Sandoval
c570525d64 Btrfs: fix clone vs chattr NODATASUM race
commit b5c40d598f5408bd0ca22dfffa82f03cd9433f23 upstream.

In btrfs_clone_files(), we must check the NODATASUM flag while the
inodes are locked. Otherwise, it's possible that btrfs_ioctl_setflags()
will change the flags after we check and we can end up with a party
checksummed file.

The race window is only a few instructions in size, between the if and
the locks which is:

3834         if (S_ISDIR(src->i_mode) || S_ISDIR(inode->i_mode))
3835                 return -EISDIR;

where the setflags must be run and toggle the NODATASUM flag (provided
the file size is 0).  The clone will block on the inode lock, segflags
takes the inode lock, changes flags, releases log and clone continues.

Not impossible but still needs a lot of bad luck to hit unintentionally.

Fixes: 0e7b824c4e ("Btrfs: don't make a file partly checksummed through file clone")
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ adjusted for 4.4 ]
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
2018-07-03 11:21:30 +02:00
Qu Wenruo
d85feb4259 btrfs: scrub: Don't use inode pages for device replace
commit ac0b4145d662a3b9e34085dea460fb06ede9b69b upstream.

[BUG]
Btrfs can create compressed extent without checksum (even though it
shouldn't), and if we then try to replace device containing such extent,
the result device will contain all the uncompressed data instead of the
compressed one.

Test case already submitted to fstests:
https://patchwork.kernel.org/patch/10442353/

[CAUSE]
When handling compressed extent without checksum, device replace will
goe into copy_nocow_pages() function.

In that function, btrfs will get all inodes referring to this data
extents and then use find_or_create_page() to get pages direct from that
inode.

The problem here is, pages directly from inode are always uncompressed.
And for compressed data extent, they mismatch with on-disk data.
Thus this leads to corrupted compressed data extent written to replace
device.

[FIX]
In this attempt, we could just remove the "optimization" branch, and let
unified scrub_pages() to handle it.

Although scrub_pages() won't bother reusing page cache, it will be a
little slower, but it does the correct csum checking and won't cause
such data corruption caused by "optimization".

Note about the fix: this is the minimal fix that can be backported to
older stable trees without conflicts. The whole callchain from
copy_nocow_pages() can be deleted, and will be in followup patches.

Fixes: ff023aac31 ("Btrfs: add code to scrub to copy read data to another disk")
CC: stable@vger.kernel.org # 4.4+
Reported-by: James Harvey <jamespharvey20@gmail.com>
Reviewed-by: James Harvey <jamespharvey20@gmail.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ remove code removal, add note why ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:21:25 +02:00
Liu Bo
b988ed89cf Btrfs: make raid6 rebuild retry more
[ Upstream commit 8810f7517a3bc4ca2d41d022446d3f5fd6b77c09 ]

There is a scenario that can end up with rebuild process failing to
return good content, i.e.
suppose that all disks can be read without problems and if the content
that was read out doesn't match its checksum, currently for raid6
btrfs at most retries twice,

- the 1st retry is to rebuild with all other stripes, it'll eventually
  be a raid5 xor rebuild,
- if the 1st fails, the 2nd retry will deliberately fail parity p so
  that it will do raid6 style rebuild,

however, the chances are that another non-parity stripe content also
has something corrupted, so that the above retries are not able to
return correct content, and users will think of this as data loss.
More seriouly, if the loss happens on some important internal btree
roots, it could refuse to mount.

This extends btrfs to do more retries and each retry fails only one
stripe.  Since raid6 can tolerate 2 disk failures, if there is one
more failure besides the failure on which we're recovering, this can
always work.

The worst case is to retry as many times as the number of raid6 disks,
but given the fact that such a scenario is really rare in practice,
it's still acceptable.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:21:24 +02:00
Sasha Levin
2cb1b6033d Revert "Btrfs: fix scrub to repair raid6 corruption"
This reverts commit 95b286daf7.

This commit used an incorrect log message.

Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:21:24 +02:00
Greg Kroah-Hartman
07c01385fb This is the 4.4.138 stable release
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Merge 4.4.138 into android-4.4

Changes in 4.4.138
	x86/fpu: Fix early FPU command-line parsing
	x86: Remove unused function cpu_has_ht_siblings()
	x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros
	x86/fpu: Disable MPX when eagerfpu is off
	x86/fpu: Disable AVX when eagerfpu is off
	x86/fpu: Default eagerfpu=on on all CPUs
	x86/fpu: Fix 'no387' regression
	x86/fpu: Revert ("x86/fpu: Disable AVX when eagerfpu is off")
	x86/fpu: Fix eager-FPU handling on legacy FPU machines
	x86/fpu: Hard-disable lazy FPU mode
	x86/fpu: Fix FNSAVE usage in eagerfpu mode
	x86/fpu: Fix math emulation in eager fpu mode
	af_key: Always verify length of provided sadb_key
	x86/crypto, x86/fpu: Remove X86_FEATURE_EAGER_FPU #ifdef from the crc32c code
	gpio: No NULL owner
	Clarify (and fix) MAX_LFS_FILESIZE macros
	KVM: x86: introduce linear_{read,write}_system
	KVM: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system
	serial: samsung: fix maxburst parameter for DMA transactions
	vmw_balloon: fixing double free when batching mode is off
	kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access
	Input: goodix - add new ACPI id for GPD Win 2 touch screen
	Input: elan_i2c - add ELAN0612 (Lenovo v330 14IKB) ACPI ID
	crypto: vmx - Remove overly verbose printk from AES init routines
	Linux 4.4.138

Change-Id: I443664406b736e16c77c99d83e9bdf02f4511ee4
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-06-16 10:33:03 +02:00
Borislav Petkov
082efbb048 x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros
commit 362f924b64ba0f4be2ee0cb697690c33d40be721 upstream.

Those are stupid and code should use static_cpu_has_safe() or
boot_cpu_has() instead. Kill the least used and unused ones.

The remaining ones need more careful inspection before a conversion can
happen. On the TODO.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1449481182-27541-4-git-send-email-bp@alien8.de
Cc: David Sterba <dsterba@suse.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-16 09:54:24 +02:00
Greg Kroah-Hartman
6e37ae0e7a This is the 4.4.134 stable release
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Merge 4.4.134 into android-4.4

Changes in 4.4.134
	MIPS: ptrace: Expose FIR register through FP regset
	MIPS: Fix ptrace(2) PTRACE_PEEKUSR and PTRACE_POKEUSR accesses to o32 FGRs
	KVM: Fix spelling mistake: "cop_unsuable" -> "cop_unusable"
	affs_lookup(): close a race with affs_remove_link()
	aio: fix io_destroy(2) vs. lookup_ioctx() race
	ALSA: timer: Fix pause event notification
	mmc: sdhci-iproc: fix 32bit writes for TRANSFER_MODE register
	libata: Blacklist some Sandisk SSDs for NCQ
	libata: blacklist Micron 500IT SSD with MU01 firmware
	xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent
	Revert "ipc/shm: Fix shmat mmap nil-page protection"
	ipc/shm: fix shmat() nil address after round-down when remapping
	kasan: fix memory hotplug during boot
	kernel/sys.c: fix potential Spectre v1 issue
	kernel/signal.c: avoid undefined behaviour in kill_something_info
	xfs: remove racy hasattr check from attr ops
	do d_instantiate/unlock_new_inode combinations safely
	firewire-ohci: work around oversized DMA reads on JMicron controllers
	NFSv4: always set NFS_LOCK_LOST when a lock is lost.
	ALSA: hda - Use IS_REACHABLE() for dependency on input
	ASoC: au1x: Fix timeout tests in au1xac97c_ac97_read()
	kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl
	tracing/hrtimer: Fix tracing bugs by taking all clock bases and modes into account
	PCI: Add function 1 DMA alias quirk for Marvell 9128
	tools lib traceevent: Simplify pointer print logic and fix %pF
	perf callchain: Fix attr.sample_max_stack setting
	tools lib traceevent: Fix get_field_str() for dynamic strings
	dm thin: fix documentation relative to low water mark threshold
	nfs: Do not convert nfs_idmap_cache_timeout to jiffies
	watchdog: sp5100_tco: Fix watchdog disable bit
	kconfig: Don't leak main menus during parsing
	kconfig: Fix automatic menu creation mem leak
	kconfig: Fix expr_free() E_NOT leak
	mac80211_hwsim: fix possible memory leak in hwsim_new_radio_nl()
	ipmi/powernv: Fix error return code in ipmi_powernv_probe()
	Btrfs: set plug for fsync
	btrfs: Fix out of bounds access in btrfs_search_slot
	Btrfs: fix scrub to repair raid6 corruption
	scsi: fas216: fix sense buffer initialization
	HID: roccat: prevent an out of bounds read in kovaplus_profile_activated()
	jffs2: Fix use-after-free bug in jffs2_iget()'s error handling path
	powerpc/numa: Use ibm,max-associativity-domains to discover possible nodes
	powerpc/numa: Ensure nodes initialized for hotplug
	RDMA/mlx5: Avoid memory leak in case of XRCD dealloc failure
	ntb_transport: Fix bug with max_mw_size parameter
	ocfs2: return -EROFS to mount.ocfs2 if inode block is invalid
	ocfs2/acl: use 'ip_xattr_sem' to protect getting extended attribute
	ocfs2: return error when we attempt to access a dirty bh in jbd2
	mm/mempolicy: fix the check of nodemask from user
	mm/mempolicy: add nodes_empty check in SYSC_migrate_pages
	asm-generic: provide generic_pmdp_establish()
	mm: pin address_space before dereferencing it while isolating an LRU page
	IB/ipoib: Fix for potential no-carrier state
	x86/power: Fix swsusp_arch_resume prototype
	firmware: dmi_scan: Fix handling of empty DMI strings
	ACPI: processor_perflib: Do not send _PPC change notification if not ready
	bpf: fix selftests/bpf test_kmod.sh failure when CONFIG_BPF_JIT_ALWAYS_ON=y
	MIPS: TXx9: use IS_BUILTIN() for CONFIG_LEDS_CLASS
	xen-netfront: Fix race between device setup and open
	xen/grant-table: Use put_page instead of free_page
	RDS: IB: Fix null pointer issue
	arm64: spinlock: Fix theoretical trylock() A-B-A with LSE atomics
	proc: fix /proc/*/map_files lookup
	cifs: silence compiler warnings showing up with gcc-8.0.0
	bcache: properly set task state in bch_writeback_thread()
	bcache: fix for allocator and register thread race
	bcache: fix for data collapse after re-attaching an attached device
	bcache: return attach error when no cache set exist
	tools/libbpf: handle issues with bpf ELF objects containing .eh_frames
	locking/qspinlock: Ensure node->count is updated before initialising node
	irqchip/gic-v3: Change pr_debug message to pr_devel
	scsi: ufs: Enable quirk to ignore sending WRITE_SAME command
	scsi: bnx2fc: Fix check in SCSI completion handler for timed out request
	scsi: sym53c8xx_2: iterator underflow in sym_getsync()
	scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo()
	scsi: qla2xxx: Avoid triggering undefined behavior in qla2x00_mbx_completion()
	ARC: Fix malformed ARC_EMUL_UNALIGNED default
	usb: gadget: f_uac2: fix bFirstInterface in composite gadget
	usb: gadget: fsl_udc_core: fix ep valid checks
	usb: dwc2: Fix dwc2_hsotg_core_init_disconnected()
	selftests: memfd: add config fragment for fuse
	scsi: storvsc: Increase cmd_per_lun for higher speed devices
	scsi: aacraid: fix shutdown crash when init fails
	scsi: qla4xxx: skip error recovery in case of register disconnect.
	ARM: OMAP2+: timer: fix a kmemleak caused in omap_get_timer_dt
	ARM: OMAP3: Fix prm wake interrupt for resume
	ARM: OMAP1: clock: Fix debugfs_create_*() usage
	NFC: llcp: Limit size of SDP URI
	mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4
	md raid10: fix NULL deference in handle_write_completed()
	drm/exynos: fix comparison to bitshift when dealing with a mask
	usb: musb: fix enumeration after resume
	locking/xchg/alpha: Add unconditional memory barrier to cmpxchg()
	md: raid5: avoid string overflow warning
	kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE
	powerpc/bpf/jit: Fix 32-bit JIT for seccomp_data access
	s390/cio: fix return code after missing interrupt
	s390/cio: clear timer when terminating driver I/O
	ARM: OMAP: Fix dmtimer init for omap1
	smsc75xx: fix smsc75xx_set_features()
	regulatory: add NUL to request alpha2
	locking/xchg/alpha: Fix xchg() and cmpxchg() memory ordering bugs
	x86/topology: Update the 'cpu cores' field in /proc/cpuinfo correctly across CPU hotplug operations
	media: dmxdev: fix error code for invalid ioctls
	md/raid1: fix NULL pointer dereference
	batman-adv: fix packet checksum in receive path
	batman-adv: invalidate checksum on fragment reassembly
	netfilter: ebtables: convert BUG_ONs to WARN_ONs
	nvme-pci: Fix nvme queue cleanup if IRQ setup fails
	clocksource/drivers/fsl_ftm_timer: Fix error return checking
	r8152: fix tx packets accounting
	virtio-gpu: fix ioctl and expose the fixed status to userspace.
	dmaengine: rcar-dmac: fix max_chunk_size for R-Car Gen3
	bcache: fix kcrashes with fio in RAID5 backend dev
	sit: fix IFLA_MTU ignored on NEWLINK
	gianfar: Fix Rx byte accounting for ndev stats
	net/tcp/illinois: replace broken algorithm reference link
	xen/pirq: fix error path cleanup when binding MSIs
	Btrfs: send, fix issuing write op when processing hole in no data mode
	selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailable
	KVM: PPC: Book3S HV: Fix VRMA initialization with 2MB or 1GB memory backing
	watchdog: f71808e_wdt: Fix magic close handling
	e1000e: Fix check_for_link return value with autoneg off
	e1000e: allocate ring descriptors with dma_zalloc_coherent
	usb: musb: call pm_runtime_{get,put}_sync before reading vbus registers
	scsi: mpt3sas: Do not mark fw_event workqueue as WQ_MEM_RECLAIM
	scsi: sd: Keep disk read-only when re-reading partition
	fbdev: Fixing arbitrary kernel leak in case FBIOGETCMAP_SPARC in sbusfb_ioctl_helper().
	xen: xenbus: use put_device() instead of kfree()
	USB: OHCI: Fix NULL dereference in HCDs using HCD_LOCAL_MEM
	netfilter: ebtables: fix erroneous reject of last rule
	bnxt_en: Check valid VNIC ID in bnxt_hwrm_vnic_set_tpa().
	workqueue: use put_device() instead of kfree()
	ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu
	sunvnet: does not support GSO for sctp
	net: Fix vlan untag for bridge and vlan_dev with reorder_hdr off
	batman-adv: fix header size check in batadv_dbg_arp()
	vti4: Don't count header length twice on tunnel setup
	vti4: Don't override MTU passed on link creation via IFLA_MTU
	perf/cgroup: Fix child event counting bug
	RDMA/ucma: Correct option size check using optlen
	mm/mempolicy.c: avoid use uninitialized preferred_node
	selftests: ftrace: Add probe event argument syntax testcase
	selftests: ftrace: Add a testcase for string type with kprobe_event
	selftests: ftrace: Add a testcase for probepoint
	batman-adv: fix multicast-via-unicast transmission with AP isolation
	batman-adv: fix packet loss for broadcasted DHCP packets to a server
	ARM: 8748/1: mm: Define vdso_start, vdso_end as array
	net: qmi_wwan: add BroadMobi BM806U 2020:2033
	net/usb/qmi_wwan.c: Add USB id for lt4120 modem
	net-usb: add qmi_wwan if on lte modem wistron neweb d18q1
	llc: properly handle dev_queue_xmit() return value
	mm/kmemleak.c: wait for scan completion before disabling free
	net: Fix untag for vlan packets without ethernet header
	net: mvneta: fix enable of all initialized RXQs
	sh: fix debug trap failure to process signals before return to user
	x86/pgtable: Don't set huge PUD/PMD on non-leaf entries
	fs/proc/proc_sysctl.c: fix potential page fault while unregistering sysctl table
	swap: divide-by-zero when zero length swap file on ssd
	sr: get/drop reference to device in revalidate and check_events
	Force log to disk before reading the AGF during a fstrim
	cpufreq: CPPC: Initialize shared perf capabilities of CPUs
	scsi: aacraid: Insure command thread is not recursively stopped
	dp83640: Ensure against premature access to PHY registers after reset
	mm/ksm: fix interaction with THP
	mm: fix races between address_space dereference and free in page_evicatable
	Btrfs: bail out on error during replay_dir_deletes
	Btrfs: fix NULL pointer dereference in log_dir_items
	btrfs: Fix possible softlock on single core machines
	ocfs2/dlm: don't handle migrate lockres if already in shutdown
	sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning
	KVM: VMX: raise internal error for exception during invalid protected mode state
	fscache: Fix hanging wait on page discarded by writeback
	sparc64: Make atomic_xchg() an inline function rather than a macro.
	rtc: snvs: Fix usage of snvs_rtc_enable
	net: bgmac: Fix endian access in bgmac_dma_tx_ring_free()
	Bluetooth: btusb: Add USB ID 7392:a611 for Edimax EW-7611ULB
	btrfs: tests/qgroup: Fix wrong tree backref level
	Btrfs: fix copy_items() return value when logging an inode
	btrfs: fix lockdep splat in btrfs_alloc_subvolume_writers
	xen/acpi: off by one in read_acpi_id()
	ACPI: acpi_pad: Fix memory leak in power saving threads
	powerpc/mpic: Check if cpu_possible() in mpic_physmask()
	m68k: set dma and coherent masks for platform FEC ethernets
	parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode
	hwmon: (nct6775) Fix writing pwmX_mode
	rtc: hctosys: Ensure system time doesn't overflow time_t
	powerpc/perf: Prevent kernel address leak to userspace via BHRB buffer
	powerpc/perf: Fix kernel address leak via sampling registers
	tools/thermal: tmon: fix for segfault
	selftests: Print the test we're running to /dev/kmsg
	net/mlx5: Protect from command bit overflow
	ath10k: Fix kernel panic while using worker (ath10k_sta_rc_update_wk)
	ima: Fix Kconfig to select TPM 2.0 CRB interface
	ima: Fallback to the builtin hash algorithm
	virtio-net: Fix operstate for virtio when no VIRTIO_NET_F_STATUS
	arm: dts: socfpga: fix GIC PPI warning
	usb: dwc3: Update DWC_usb31 GTXFIFOSIZ reg fields
	cpufreq: cppc_cpufreq: Fix cppc_cpufreq_init() failure path
	clk: Don't show the incorrect clock phase
	zorro: Set up z->dev.dma_mask for the DMA API
	bcache: quit dc->writeback_thread when BCACHE_DEV_DETACHING is set
	ACPICA: Events: add a return on failure from acpi_hw_register_read
	ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c
	i2c: mv64xxx: Apply errata delay only in standard mode
	KVM: lapic: stop advertising DIRECTED_EOI when in-kernel IOAPIC is in use
	xhci: zero usb device slot_id member when disabling and freeing a xhci slot
	MIPS: ath79: Fix AR724X_PLL_REG_PCIE_CONFIG offset
	PCI: Restore config space on runtime resume despite being unbound
	ipmi_ssif: Fix kernel panic at msg_done_handler
	usb: dwc2: Fix interval type issue
	usb: gadget: ffs: Let setup() return USB_GADGET_DELAYED_STATUS
	usb: gadget: ffs: Execute copy_to_user() with USER_DS set
	powerpc: Add missing prototype for arch_irq_work_raise()
	ASoC: topology: create TLV data for dapm widgets
	perf/core: Fix perf_output_read_group()
	hwmon: (pmbus/max8688) Accept negative page register values
	hwmon: (pmbus/adm1275) Accept negative page register values
	cdrom: do not call check_disk_change() inside cdrom_open()
	gfs2: Fix fallocate chunk size
	usb: gadget: udc: change comparison to bitshift when dealing with a mask
	usb: gadget: composite: fix incorrect handling of OS desc requests
	x86/devicetree: Initialize device tree before using it
	x86/devicetree: Fix device IRQ settings in DT
	ALSA: vmaster: Propagate slave error
	media: cx23885: Override 888 ImpactVCBe crystal frequency
	media: cx23885: Set subdev host data to clk_freq pointer
	media: s3c-camif: fix out-of-bounds array access
	dmaengine: pl330: fix a race condition in case of threaded irqs
	media: em28xx: USB bulk packet size fix
	clk: rockchip: Prevent calculating mmc phase if clock rate is zero
	enic: enable rq before updating rq descriptors
	hwrng: stm32 - add reset during probe
	staging: rtl8192u: return -ENOMEM on failed allocation of priv->oldaddr
	rtc: tx4939: avoid unintended sign extension on a 24 bit shift
	serial: xuartps: Fix out-of-bounds access through DT alias
	serial: samsung: Fix out-of-bounds access through serial port index
	serial: mxs-auart: Fix out-of-bounds access through serial port index
	serial: imx: Fix out-of-bounds access through serial port index
	serial: fsl_lpuart: Fix out-of-bounds access through DT alias
	serial: arc_uart: Fix out-of-bounds access through DT alias
	PCI: Add function 1 DMA alias quirk for Marvell 88SE9220
	udf: Provide saner default for invalid uid / gid
	media: cx25821: prevent out-of-bounds read on array card
	clk: samsung: s3c2410: Fix PLL rates
	clk: samsung: exynos5260: Fix PLL rates
	clk: samsung: exynos5433: Fix PLL rates
	clk: samsung: exynos5250: Fix PLL rates
	clk: samsung: exynos3250: Fix PLL rates
	crypto: sunxi-ss - Add MODULE_ALIAS to sun4i-ss
	audit: return on memory error to avoid null pointer dereference
	MIPS: Octeon: Fix logging messages with spurious periods after newlines
	drm/rockchip: Respect page offset for PRIME mmap calls
	x86/apic: Set up through-local-APIC mode on the boot CPU if 'noapic' specified
	perf tests: Use arch__compare_symbol_names to compare symbols
	perf report: Fix memory corruption in --branch-history mode --branch-history
	selftests/net: fixes psock_fanout eBPF test case
	netlabel: If PF_INET6, check sk_buff ip header version
	scsi: lpfc: Fix issue_lip if link is disabled
	scsi: lpfc: Fix soft lockup in lpfc worker thread during LIP testing
	scsi: lpfc: Fix frequency of Release WQE CQEs
	regulator: of: Add a missing 'of_node_put()' in an error handling path of 'of_regulator_match()'
	ASoC: samsung: i2s: Ensure the RCLK rate is properly determined
	Bluetooth: btusb: Add device ID for RTL8822BE
	kdb: make "mdr" command repeat
	s390/ftrace: use expoline for indirect branches
	Linux 4.4.134

Change-Id: Iababaf9b89bc8d0437b95e1368d8b0a9126a178c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-05-30 13:25:24 +02:00
Jeff Mahoney
93c13652e0 btrfs: fix lockdep splat in btrfs_alloc_subvolume_writers
[ Upstream commit 8a5a916d9a35e13576d79cc16e24611821b13e34 ]

While running btrfs/011, I hit the following lockdep splat.

This is the important bit:
   pcpu_alloc+0x1ac/0x5e0
   __percpu_counter_init+0x4e/0xb0
   btrfs_init_fs_root+0x99/0x1c0 [btrfs]
   btrfs_get_fs_root.part.54+0x5b/0x150 [btrfs]
   resolve_indirect_refs+0x130/0x830 [btrfs]
   find_parent_nodes+0x69e/0xff0 [btrfs]
   btrfs_find_all_roots_safe+0xa0/0x110 [btrfs]
   btrfs_find_all_roots+0x50/0x70 [btrfs]
   btrfs_qgroup_prepare_account_extents+0x53/0x90 [btrfs]
   btrfs_commit_transaction+0x3ce/0x9b0 [btrfs]

The percpu_counter_init call in btrfs_alloc_subvolume_writers
uses GFP_KERNEL, which we can't do during transaction commit.

This switches it to GFP_NOFS.

========================================================
WARNING: possible irq lock inversion dependency detected
4.12.14-kvmsmall #8 Tainted: G        W
--------------------------------------------------------
kswapd0/50 just changed the state of lock:
 (&delayed_node->mutex){+.+.-.}, at: [<ffffffffc06994fa>] __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
but this lock took another, RECLAIM_FS-unsafe lock in the past:
 (pcpu_alloc_mutex){+.+.+.}

and interrupts could create inverse lock ordering between them.

other info that might help us debug this:
Chain exists of:
  &delayed_node->mutex --> &found->groups_sem --> pcpu_alloc_mutex

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(pcpu_alloc_mutex);
                               local_irq_disable();
                               lock(&delayed_node->mutex);
                               lock(&found->groups_sem);
  <Interrupt>
    lock(&delayed_node->mutex);

 *** DEADLOCK ***

2 locks held by kswapd0/50:
 #0:  (shrinker_rwsem){++++..}, at: [<ffffffff811dc11f>] shrink_slab+0x7f/0x5b0
 #1:  (&type->s_umount_key#30){+++++.}, at: [<ffffffff8126dec6>] trylock_super+0x16/0x50

the shortest dependencies between 2nd lock and 1st lock:
   -> (pcpu_alloc_mutex){+.+.+.} ops: 4904 {
      HARDIRQ-ON-W at:
                          __mutex_lock+0x4e/0x8c0
                          pcpu_alloc+0x1ac/0x5e0
                          alloc_kmem_cache_cpus.isra.70+0x25/0xa0
                          __do_tune_cpucache+0x2c/0x220
                          do_tune_cpucache+0x26/0xc0
                          enable_cpucache+0x6d/0xf0
                          kmem_cache_init_late+0x42/0x75
                          start_kernel+0x343/0x4cb
                          x86_64_start_kernel+0x127/0x134
                          secondary_startup_64+0xa5/0xb0
      SOFTIRQ-ON-W at:
                          __mutex_lock+0x4e/0x8c0
                          pcpu_alloc+0x1ac/0x5e0
                          alloc_kmem_cache_cpus.isra.70+0x25/0xa0
                          __do_tune_cpucache+0x2c/0x220
                          do_tune_cpucache+0x26/0xc0
                          enable_cpucache+0x6d/0xf0
                          kmem_cache_init_late+0x42/0x75
                          start_kernel+0x343/0x4cb
                          x86_64_start_kernel+0x127/0x134
                          secondary_startup_64+0xa5/0xb0
      RECLAIM_FS-ON-W at:
                             __kmalloc+0x47/0x310
                             pcpu_extend_area_map+0x2b/0xc0
                             pcpu_alloc+0x3ec/0x5e0
                             alloc_kmem_cache_cpus.isra.70+0x25/0xa0
                             __do_tune_cpucache+0x2c/0x220
                             do_tune_cpucache+0x26/0xc0
                             enable_cpucache+0x6d/0xf0
                             __kmem_cache_create+0x1bf/0x390
                             create_cache+0xba/0x1b0
                             kmem_cache_create+0x1f8/0x2b0
                             ksm_init+0x6f/0x19d
                             do_one_initcall+0x50/0x1b0
                             kernel_init_freeable+0x201/0x289
                             kernel_init+0xa/0x100
                             ret_from_fork+0x3a/0x50
      INITIAL USE at:
                         __mutex_lock+0x4e/0x8c0
                         pcpu_alloc+0x1ac/0x5e0
                         alloc_kmem_cache_cpus.isra.70+0x25/0xa0
                         setup_cpu_cache+0x2f/0x1f0
                         __kmem_cache_create+0x1bf/0x390
                         create_boot_cache+0x8b/0xb1
                         kmem_cache_init+0xa1/0x19e
                         start_kernel+0x270/0x4cb
                         x86_64_start_kernel+0x127/0x134
                         secondary_startup_64+0xa5/0xb0
    }
    ... key      at: [<ffffffff821d8e70>] pcpu_alloc_mutex+0x70/0xa0
    ... acquired at:
   pcpu_alloc+0x1ac/0x5e0
   __percpu_counter_init+0x4e/0xb0
   btrfs_init_fs_root+0x99/0x1c0 [btrfs]
   btrfs_get_fs_root.part.54+0x5b/0x150 [btrfs]
   resolve_indirect_refs+0x130/0x830 [btrfs]
   find_parent_nodes+0x69e/0xff0 [btrfs]
   btrfs_find_all_roots_safe+0xa0/0x110 [btrfs]
   btrfs_find_all_roots+0x50/0x70 [btrfs]
   btrfs_qgroup_prepare_account_extents+0x53/0x90 [btrfs]
   btrfs_commit_transaction+0x3ce/0x9b0 [btrfs]
   transaction_kthread+0x176/0x1b0 [btrfs]
   kthread+0x102/0x140
   ret_from_fork+0x3a/0x50

  -> (&fs_info->commit_root_sem){++++..} ops: 1566382 {
     HARDIRQ-ON-W at:
                        down_write+0x3e/0xa0
                        cache_block_group+0x287/0x420 [btrfs]
                        find_free_extent+0x106c/0x12d0 [btrfs]
                        btrfs_reserve_extent+0xd8/0x170 [btrfs]
                        cow_file_range.isra.66+0x133/0x470 [btrfs]
                        run_delalloc_range+0x121/0x410 [btrfs]
                        writepage_delalloc.isra.50+0xfe/0x180 [btrfs]
                        __extent_writepage+0x19a/0x360 [btrfs]
                        extent_write_cache_pages.constprop.56+0x249/0x3e0 [btrfs]
                        extent_writepages+0x4d/0x60 [btrfs]
                        do_writepages+0x1a/0x70
                        __filemap_fdatawrite_range+0xa7/0xe0
                        btrfs_rename+0x5ee/0xdb0 [btrfs]
                        vfs_rename+0x52a/0x7e0
                        SyS_rename+0x351/0x3b0
                        do_syscall_64+0x79/0x1e0
                        entry_SYSCALL_64_after_hwframe+0x42/0xb7
     HARDIRQ-ON-R at:
                        down_read+0x35/0x90
                        caching_thread+0x57/0x560 [btrfs]
                        normal_work_helper+0x1c0/0x5e0 [btrfs]
                        process_one_work+0x1e0/0x5c0
                        worker_thread+0x44/0x390
                        kthread+0x102/0x140
                        ret_from_fork+0x3a/0x50
     SOFTIRQ-ON-W at:
                        down_write+0x3e/0xa0
                        cache_block_group+0x287/0x420 [btrfs]
                        find_free_extent+0x106c/0x12d0 [btrfs]
                        btrfs_reserve_extent+0xd8/0x170 [btrfs]
                        cow_file_range.isra.66+0x133/0x470 [btrfs]
                        run_delalloc_range+0x121/0x410 [btrfs]
                        writepage_delalloc.isra.50+0xfe/0x180 [btrfs]
                        __extent_writepage+0x19a/0x360 [btrfs]
                        extent_write_cache_pages.constprop.56+0x249/0x3e0 [btrfs]
                        extent_writepages+0x4d/0x60 [btrfs]
                        do_writepages+0x1a/0x70
                        __filemap_fdatawrite_range+0xa7/0xe0
                        btrfs_rename+0x5ee/0xdb0 [btrfs]
                        vfs_rename+0x52a/0x7e0
                        SyS_rename+0x351/0x3b0
                        do_syscall_64+0x79/0x1e0
                        entry_SYSCALL_64_after_hwframe+0x42/0xb7
     SOFTIRQ-ON-R at:
                        down_read+0x35/0x90
                        caching_thread+0x57/0x560 [btrfs]
                        normal_work_helper+0x1c0/0x5e0 [btrfs]
                        process_one_work+0x1e0/0x5c0
                        worker_thread+0x44/0x390
                        kthread+0x102/0x140
                        ret_from_fork+0x3a/0x50
     INITIAL USE at:
                       down_write+0x3e/0xa0
                       cache_block_group+0x287/0x420 [btrfs]
                       find_free_extent+0x106c/0x12d0 [btrfs]
                       btrfs_reserve_extent+0xd8/0x170 [btrfs]
                       cow_file_range.isra.66+0x133/0x470 [btrfs]
                       run_delalloc_range+0x121/0x410 [btrfs]
                       writepage_delalloc.isra.50+0xfe/0x180 [btrfs]
                       __extent_writepage+0x19a/0x360 [btrfs]
                       extent_write_cache_pages.constprop.56+0x249/0x3e0 [btrfs]
                       extent_writepages+0x4d/0x60 [btrfs]
                       do_writepages+0x1a/0x70
                       __filemap_fdatawrite_range+0xa7/0xe0
                       btrfs_rename+0x5ee/0xdb0 [btrfs]
                       vfs_rename+0x52a/0x7e0
                       SyS_rename+0x351/0x3b0
                       do_syscall_64+0x79/0x1e0
                       entry_SYSCALL_64_after_hwframe+0x42/0xb7
   }
   ... key      at: [<ffffffffc0729578>] __key.61970+0x0/0xfffffffffff9aa88 [btrfs]
   ... acquired at:
   cache_block_group+0x287/0x420 [btrfs]
   find_free_extent+0x106c/0x12d0 [btrfs]
   btrfs_reserve_extent+0xd8/0x170 [btrfs]
   btrfs_alloc_tree_block+0x12f/0x4c0 [btrfs]
   btrfs_create_tree+0xbb/0x2a0 [btrfs]
   btrfs_create_uuid_tree+0x37/0x140 [btrfs]
   open_ctree+0x23c0/0x2660 [btrfs]
   btrfs_mount+0xd36/0xf90 [btrfs]
   mount_fs+0x3a/0x160
   vfs_kern_mount+0x66/0x150
   btrfs_mount+0x18c/0xf90 [btrfs]
   mount_fs+0x3a/0x160
   vfs_kern_mount+0x66/0x150
   do_mount+0x1c1/0xcc0
   SyS_mount+0x7e/0xd0
   do_syscall_64+0x79/0x1e0
   entry_SYSCALL_64_after_hwframe+0x42/0xb7

 -> (&found->groups_sem){++++..} ops: 2134587 {
    HARDIRQ-ON-W at:
                      down_write+0x3e/0xa0
                      __link_block_group+0x34/0x130 [btrfs]
                      btrfs_read_block_groups+0x33d/0x7b0 [btrfs]
                      open_ctree+0x2054/0x2660 [btrfs]
                      btrfs_mount+0xd36/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      btrfs_mount+0x18c/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      do_mount+0x1c1/0xcc0
                      SyS_mount+0x7e/0xd0
                      do_syscall_64+0x79/0x1e0
                      entry_SYSCALL_64_after_hwframe+0x42/0xb7
    HARDIRQ-ON-R at:
                      down_read+0x35/0x90
                      btrfs_calc_num_tolerated_disk_barrier_failures+0x113/0x1f0 [btrfs]
                      open_ctree+0x207b/0x2660 [btrfs]
                      btrfs_mount+0xd36/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      btrfs_mount+0x18c/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      do_mount+0x1c1/0xcc0
                      SyS_mount+0x7e/0xd0
                      do_syscall_64+0x79/0x1e0
                      entry_SYSCALL_64_after_hwframe+0x42/0xb7
    SOFTIRQ-ON-W at:
                      down_write+0x3e/0xa0
                      __link_block_group+0x34/0x130 [btrfs]
                      btrfs_read_block_groups+0x33d/0x7b0 [btrfs]
                      open_ctree+0x2054/0x2660 [btrfs]
                      btrfs_mount+0xd36/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      btrfs_mount+0x18c/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      do_mount+0x1c1/0xcc0
                      SyS_mount+0x7e/0xd0
                      do_syscall_64+0x79/0x1e0
                      entry_SYSCALL_64_after_hwframe+0x42/0xb7
    SOFTIRQ-ON-R at:
                      down_read+0x35/0x90
                      btrfs_calc_num_tolerated_disk_barrier_failures+0x113/0x1f0 [btrfs]
                      open_ctree+0x207b/0x2660 [btrfs]
                      btrfs_mount+0xd36/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      btrfs_mount+0x18c/0xf90 [btrfs]
                      mount_fs+0x3a/0x160
                      vfs_kern_mount+0x66/0x150
                      do_mount+0x1c1/0xcc0
                      SyS_mount+0x7e/0xd0
                      do_syscall_64+0x79/0x1e0
                      entry_SYSCALL_64_after_hwframe+0x42/0xb7
    INITIAL USE at:
                     down_write+0x3e/0xa0
                     __link_block_group+0x34/0x130 [btrfs]
                     btrfs_read_block_groups+0x33d/0x7b0 [btrfs]
                     open_ctree+0x2054/0x2660 [btrfs]
                     btrfs_mount+0xd36/0xf90 [btrfs]
                     mount_fs+0x3a/0x160
                     vfs_kern_mount+0x66/0x150
                     btrfs_mount+0x18c/0xf90 [btrfs]
                     mount_fs+0x3a/0x160
                     vfs_kern_mount+0x66/0x150
                     do_mount+0x1c1/0xcc0
                     SyS_mount+0x7e/0xd0
                     do_syscall_64+0x79/0x1e0
                     entry_SYSCALL_64_after_hwframe+0x42/0xb7
  }
  ... key      at: [<ffffffffc0729488>] __key.59101+0x0/0xfffffffffff9ab78 [btrfs]
  ... acquired at:
   find_free_extent+0xcb4/0x12d0 [btrfs]
   btrfs_reserve_extent+0xd8/0x170 [btrfs]
   btrfs_alloc_tree_block+0x12f/0x4c0 [btrfs]
   __btrfs_cow_block+0x110/0x5b0 [btrfs]
   btrfs_cow_block+0xd7/0x290 [btrfs]
   btrfs_search_slot+0x1f6/0x960 [btrfs]
   btrfs_lookup_inode+0x2a/0x90 [btrfs]
   __btrfs_update_delayed_inode+0x65/0x210 [btrfs]
   btrfs_commit_inode_delayed_inode+0x121/0x130 [btrfs]
   btrfs_evict_inode+0x3fe/0x6a0 [btrfs]
   evict+0xc4/0x190
   __dentry_kill+0xbf/0x170
   dput+0x2ae/0x2f0
   SyS_rename+0x2a6/0x3b0
   do_syscall_64+0x79/0x1e0
   entry_SYSCALL_64_after_hwframe+0x42/0xb7

-> (&delayed_node->mutex){+.+.-.} ops: 5580204 {
   HARDIRQ-ON-W at:
                    __mutex_lock+0x4e/0x8c0
                    btrfs_delayed_update_inode+0x46/0x6e0 [btrfs]
                    btrfs_update_inode+0x83/0x110 [btrfs]
                    btrfs_dirty_inode+0x62/0xe0 [btrfs]
                    touch_atime+0x8c/0xb0
                    do_generic_file_read+0x818/0xb10
                    __vfs_read+0xdc/0x150
                    vfs_read+0x8a/0x130
                    SyS_read+0x45/0xa0
                    do_syscall_64+0x79/0x1e0
                    entry_SYSCALL_64_after_hwframe+0x42/0xb7
   SOFTIRQ-ON-W at:
                    __mutex_lock+0x4e/0x8c0
                    btrfs_delayed_update_inode+0x46/0x6e0 [btrfs]
                    btrfs_update_inode+0x83/0x110 [btrfs]
                    btrfs_dirty_inode+0x62/0xe0 [btrfs]
                    touch_atime+0x8c/0xb0
                    do_generic_file_read+0x818/0xb10
                    __vfs_read+0xdc/0x150
                    vfs_read+0x8a/0x130
                    SyS_read+0x45/0xa0
                    do_syscall_64+0x79/0x1e0
                    entry_SYSCALL_64_after_hwframe+0x42/0xb7
   IN-RECLAIM_FS-W at:
                       __mutex_lock+0x4e/0x8c0
                       __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
                       btrfs_evict_inode+0x22c/0x6a0 [btrfs]
                       evict+0xc4/0x190
                       dispose_list+0x35/0x50
                       prune_icache_sb+0x42/0x50
                       super_cache_scan+0x139/0x190
                       shrink_slab+0x262/0x5b0
                       shrink_node+0x2eb/0x2f0
                       kswapd+0x2eb/0x890
                       kthread+0x102/0x140
                       ret_from_fork+0x3a/0x50
   INITIAL USE at:
                   __mutex_lock+0x4e/0x8c0
                   btrfs_delayed_update_inode+0x46/0x6e0 [btrfs]
                   btrfs_update_inode+0x83/0x110 [btrfs]
                   btrfs_dirty_inode+0x62/0xe0 [btrfs]
                   touch_atime+0x8c/0xb0
                   do_generic_file_read+0x818/0xb10
                   __vfs_read+0xdc/0x150
                   vfs_read+0x8a/0x130
                   SyS_read+0x45/0xa0
                   do_syscall_64+0x79/0x1e0
                   entry_SYSCALL_64_after_hwframe+0x42/0xb7
 }
 ... key      at: [<ffffffffc072d488>] __key.56935+0x0/0xfffffffffff96b78 [btrfs]
 ... acquired at:
   __lock_acquire+0x264/0x11c0
   lock_acquire+0xbd/0x1e0
   __mutex_lock+0x4e/0x8c0
   __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
   btrfs_evict_inode+0x22c/0x6a0 [btrfs]
   evict+0xc4/0x190
   dispose_list+0x35/0x50
   prune_icache_sb+0x42/0x50
   super_cache_scan+0x139/0x190
   shrink_slab+0x262/0x5b0
   shrink_node+0x2eb/0x2f0
   kswapd+0x2eb/0x890
   kthread+0x102/0x140
   ret_from_fork+0x3a/0x50

stack backtrace:
CPU: 1 PID: 50 Comm: kswapd0 Tainted: G        W        4.12.14-kvmsmall #8 SLE15 (unreleased)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
Call Trace:
 dump_stack+0x78/0xb7
 print_irq_inversion_bug.part.38+0x19f/0x1aa
 check_usage_forwards+0x102/0x120
 ? ret_from_fork+0x3a/0x50
 ? check_usage_backwards+0x110/0x110
 mark_lock+0x16c/0x270
 __lock_acquire+0x264/0x11c0
 ? pagevec_lookup_entries+0x1a/0x30
 ? truncate_inode_pages_range+0x2b3/0x7f0
 lock_acquire+0xbd/0x1e0
 ? __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
 __mutex_lock+0x4e/0x8c0
 ? __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
 ? __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
 ? btrfs_evict_inode+0x1f6/0x6a0 [btrfs]
 __btrfs_release_delayed_node+0x3a/0x1f0 [btrfs]
 btrfs_evict_inode+0x22c/0x6a0 [btrfs]
 evict+0xc4/0x190
 dispose_list+0x35/0x50
 prune_icache_sb+0x42/0x50
 super_cache_scan+0x139/0x190
 shrink_slab+0x262/0x5b0
 shrink_node+0x2eb/0x2f0
 kswapd+0x2eb/0x890
 kthread+0x102/0x140
 ? mem_cgroup_shrink_node+0x2c0/0x2c0
 ? kthread_create_on_node+0x40/0x40
 ret_from_fork+0x3a/0x50

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: David Sterba <dsterba@suse.com>

Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:09 +02:00
Filipe Manana
b037a568e3 Btrfs: fix copy_items() return value when logging an inode
[ Upstream commit 8434ec46c6e3232cebc25a910363b29f5c617820 ]

When logging an inode, at tree-log.c:copy_items(), if we call
btrfs_next_leaf() at the loop which checks for the need to log holes, we
need to make sure copy_items() returns the value 1 to its caller and
not 0 (on success). This is because the path the caller passed was
released and is now different from what is was before, and the caller
expects a return value of 0 to mean both success and that the path
has not changed, while a return value of 1 means both success and
signals the caller that it can not reuse the path, it has to perform
another tree search.

Even though this is a case that should not be triggered on normal
circumstances or very rare at least, its consequences can be very
unpredictable (especially when replaying a log tree).

Fixes: 16e7549f04 ("Btrfs: incompatible format change to remove hole extents")
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:09 +02:00
Qu Wenruo
a77b0cfe80 btrfs: tests/qgroup: Fix wrong tree backref level
[ Upstream commit 3c0efdf03b2d127f0e40e30db4e7aa0429b1b79a ]

The extent tree of the test fs is like the following:

 BTRFS info (device (null)): leaf 16327509003777336587 total ptrs 1 free space 3919
  item 0 key (4096 168 4096) itemoff 3944 itemsize 51
          extent refs 1 gen 1 flags 2
          tree block key (68719476736 0 0) level 1
                                           ^^^^^^^
          ref#0: tree block backref root 5

And it's using an empty tree for fs tree, so there is no way that its
level can be 1.

For REAL (created by mkfs) fs tree backref with no skinny metadata, the
result should look like:

 item 3 key (30408704 EXTENT_ITEM 4096) itemoff 3845 itemsize 51
         refs 1 gen 4 flags TREE_BLOCK
         tree block key (256 INODE_ITEM 0) level 0
                                           ^^^^^^^
         tree block backref root 5

Fix the level to 0, so it won't break later tree level checker.

Fixes: faa2dbf004 ("Btrfs: add sanity tests for new qgroup accounting code")
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:09 +02:00
Nikolay Borisov
e1ccd597ff btrfs: Fix possible softlock on single core machines
[ Upstream commit 1e1c50a929bc9e49bc3f9935b92450d9e69f8158 ]

do_chunk_alloc implements a loop checking whether there is a pending
chunk allocation and if so causes the caller do loop. Generally this
loop is executed only once, however testing with btrfs/072 on a single
core vm machines uncovered an extreme case where the system could loop
indefinitely. This is due to a missing cond_resched when loop which
doesn't give a chance to the previous chunk allocator finish its job.

The fix is to simply add the missing cond_resched.

Fixes: 6d74119f1a ("Btrfs: avoid taking the chunk_mutex in do_chunk_alloc")
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:08 +02:00
Liu Bo
b487d1cd2c Btrfs: fix NULL pointer dereference in log_dir_items
[ Upstream commit 80c0b4210a963e31529e15bf90519708ec947596 ]

0, 1 and <0 can be returned by btrfs_next_leaf(), and when <0 is
returned, path->nodes[0] could be NULL, log_dir_items lacks such a
check for <0 and we may run into a null pointer dereference panic.

Fixes: e02119d5a7 ("Btrfs: Add a write ahead tree log to optimize synchronous operations")
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:08 +02:00
Liu Bo
0c3968cc74 Btrfs: bail out on error during replay_dir_deletes
[ Upstream commit b98def7ca6e152ee55e36863dddf6f41f12d1dc6 ]

If errors were returned by btrfs_next_leaf(), replay_dir_deletes needs
to bail out, otherwise @ret would be forced to be 0 after 'break;' and
the caller won't be aware of it.

Fixes: e02119d5a7 ("Btrfs: Add a write ahead tree log to optimize synchronous operations")
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:08 +02:00
Filipe Manana
8ee1d4d281 Btrfs: send, fix issuing write op when processing hole in no data mode
[ Upstream commit d4dfc0f4d39475ccbbac947880b5464a74c30b99 ]

When doing an incremental send of a filesystem with the no-holes feature
enabled, we end up issuing a write operation when using the no data mode
send flag, instead of issuing an update extent operation. Fix this by
issuing the update extent operation instead.

Trivial reproducer:

  $ mkfs.btrfs -f -O no-holes /dev/sdc
  $ mkfs.btrfs -f /dev/sdd
  $ mount /dev/sdc /mnt/sdc
  $ mount /dev/sdd /mnt/sdd

  $ xfs_io -f -c "pwrite -S 0xab 0 32K" /mnt/sdc/foobar
  $ btrfs subvolume snapshot -r /mnt/sdc /mnt/sdc/snap1

  $ xfs_io -c "fpunch 8K 8K" /mnt/sdc/foobar
  $ btrfs subvolume snapshot -r /mnt/sdc /mnt/sdc/snap2

  $ btrfs send /mnt/sdc/snap1 | btrfs receive /mnt/sdd
  $ btrfs send --no-data -p /mnt/sdc/snap1 /mnt/sdc/snap2 \
       | btrfs receive -vv /mnt/sdd

Before this change the output of the second receive command is:

  receiving snapshot snap2 uuid=f6922049-8c22-e544-9ff9-fc6755918447...
  utimes
  write foobar, offset 8192, len 8192
  utimes foobar
  BTRFS_IOC_SET_RECEIVED_SUBVOL uuid=f6922049-8c22-e544-9ff9-...

After this change it is:

  receiving snapshot snap2 uuid=564d36a3-ebc8-7343-aec9-bf6fda278e64...
  utimes
  update_extent foobar: offset=8192, len=8192
  utimes foobar
  BTRFS_IOC_SET_RECEIVED_SUBVOL uuid=564d36a3-ebc8-7343-aec9-bf6fda278e64...

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:49:03 +02:00
Liu Bo
95b286daf7 Btrfs: fix scrub to repair raid6 corruption
[ Upstream commit 762221f095e3932669093466aaf4b85ed9ad2ac1 ]

The raid6 corruption is that,
suppose that all disks can be read without problems and if the content
that was read out doesn't match its checksum, currently for raid6
btrfs at most retries twice,

- the 1st retry is to rebuild with all other stripes, it'll eventually
  be a raid5 xor rebuild,
- if the 1st fails, the 2nd retry will deliberately fail parity p so
  that it will do raid6 style rebuild,

however, the chances are that another non-parity stripe content also
has something corrupted, so that the above retries are not able to
return correct content.

We've fixed normal reads to rebuild raid6 correctly with more retries
in Patch "Btrfs: make raid6 rebuild retry more"[1], this is to fix
scrub to do the exactly same rebuild process.

[1]: https://patchwork.kernel.org/patch/10091755/

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:48:54 +02:00
Nikolay Borisov
72af2c8c7c btrfs: Fix out of bounds access in btrfs_search_slot
[ Upstream commit 9ea2c7c9da13c9073e371c046cbbc45481ecb459 ]

When modifying a tree where the root is at BTRFS_MAX_LEVEL - 1 then
the level variable is going to be 7 (this is the max height of the
tree). On the other hand btrfs_cow_block is always called with
"level + 1" as an index into the nodes and slots arrays. This leads to
an out of bounds access. Admittdely this will be benign since an OOB
access of the nodes array will likely read the 0th element from the
slots array, which in this case is going to be 0 (since we start CoW at
the top of the tree). The OOB access into the slots array in turn will
read the 0th and 1st values of the locks array, which would both be 0
at the time. However, this benign behavior relies on the fact that the
path being passed hasn't been initialised, if it has already been used to
query a btree then it could potentially have populated the nodes/slots arrays.

Fix it by explicitly checking if we are at level 7 (the maximum allowed
index in nodes/slots arrays) and explicitly call the CoW routine with
NULL for parent's node/slot.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Fixes-coverity-id: 711515
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:48:54 +02:00
Liu Bo
51f12a06dd Btrfs: set plug for fsync
[ Upstream commit 343e4fc1c60971b0734de26dbbd475d433950982 ]

Setting plug can merge adjacent IOs before dispatching IOs to the disk
driver.

Without plug, it'd not be a problem for single disk usecases, but for
multiple disks using raid profile, a large IO can be split to several
IOs of stripe length, and plug can be helpful to bring them together
for each disk so that we can save several disk access.

Moreover, fsync issues synchronous writes, so plug can really take
effect.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:48:54 +02:00
Al Viro
03bb758894 do d_instantiate/unlock_new_inode combinations safely
commit 1e2e547a93a00ebc21582c06ca3c6cfea2a309ee upstream.

For anything NFS-exported we do _not_ want to unlock new inode
before it has grown an alias; original set of fixes got the
ordering right, but missed the nasty complication in case of
lockdep being enabled - unlock_new_inode() does
	lockdep_annotate_inode_mutex_key(inode)
which can only be done before anyone gets a chance to touch
->i_mutex.  Unfortunately, flipping the order and doing
unlock_new_inode() before d_instantiate() opens a window when
mkdir can race with open-by-fhandle on a guessed fhandle, leading
to multiple aliases for a directory inode and all the breakage
that follows from that.

	Correct solution: a new primitive (d_instantiate_new())
combining these two in the right order - lockdep annotate, then
d_instantiate(), then the rest of unlock_new_inode().  All
combinations of d_instantiate() with unlock_new_inode() should
be converted to that.

Cc: stable@kernel.org	# 2.6.29 and later
Tested-by: Mike Marshall <hubcap@omnibond.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-30 07:48:52 +02:00
Greg Kroah-Hartman
3f51ea2db9 This is the 4.4.133 stable release
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Merge 4.4.133 into android-4.4

Changes in 4.4.133
	8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
	bridge: check iface upper dev when setting master via ioctl
	dccp: fix tasklet usage
	ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
	llc: better deal with too small mtu
	net: ethernet: sun: niu set correct packet size in skb
	net/mlx4_en: Verify coalescing parameters are in range
	net_sched: fq: take care of throttled flows before reuse
	net: support compat 64-bit time in {s,g}etsockopt
	openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
	qmi_wwan: do not steal interfaces from class drivers
	r8169: fix powering up RTL8168h
	sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr
	sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
	tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent().
	bonding: do not allow rlb updates to invalid mac
	tcp: ignore Fast Open on repair mode
	sctp: fix the issue that the cookie-ack with auth can't get processed
	sctp: delay the authentication for the duplicated cookie-echo chunk
	ALSA: timer: Call notifier in the same spinlock
	audit: move calcs after alloc and check when logging set loginuid
	arm64: introduce mov_q macro to move a constant into a 64-bit register
	arm64: Add work around for Arm Cortex-A55 Erratum 1024718
	futex: Remove unnecessary warning from get_futex_key
	futex: Remove duplicated code and fix undefined behaviour
	xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)
	lockd: lost rollback of set_grace_period() in lockd_down_net()
	Revert "ARM: dts: imx6qdl-wandboard: Fix audio channel swap"
	l2tp: revert "l2tp: fix missing print session offset info"
	pipe: cap initial pipe capacity according to pipe-max-size limit
	futex: futex_wake_op, fix sign_extend32 sign bits
	kernel/exit.c: avoid undefined behaviour when calling wait4()
	usbip: usbip_host: refine probe and disconnect debug msgs to be useful
	usbip: usbip_host: delete device from busid_table after rebind
	usbip: usbip_host: run rebind from exit when module is removed
	usbip: usbip_host: fix NULL-ptr deref and use-after-free errors
	usbip: usbip_host: fix bad unlock balance during stub_probe()
	ALSA: usb: mixer: volume quirk for CM102-A+/102S+
	ALSA: hda: Add Lenovo C50 All in one to the power_save blacklist
	ALSA: control: fix a redundant-copy issue
	spi: pxa2xx: Allow 64-bit DMA
	powerpc/powernv: panic() on OPAL < V3
	powerpc/powernv: Remove OPALv2 firmware define and references
	powerpc/powernv: remove FW_FEATURE_OPALv3 and just use FW_FEATURE_OPAL
	cpuidle: coupled: remove unused define cpuidle_coupled_lock
	powerpc: Don't preempt_disable() in show_cpuinfo()
	vmscan: do not force-scan file lru if its absolute size is small
	proc: meminfo: estimate available memory more conservatively
	mm: filemap: remove redundant code in do_read_cache_page
	mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read
	signals: avoid unnecessary taking of sighand->siglock
	cpufreq: intel_pstate: Enable HWP by default
	tracing/x86/xen: Remove zero data size trace events trace_xen_mmu_flush_tlb{_all}
	proc read mm's {arg,env}_{start,end} with mmap semaphore taken.
	procfs: fix pthread cross-thread naming if !PR_DUMPABLE
	powerpc/powernv: Fix NVRAM sleep in invalid context when crashing
	mm: don't allow deferred pages with NEED_PER_CPU_KM
	s390/qdio: fix access to uninitialized qdio_q fields
	s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero
	s390/qdio: don't release memory in qdio_setup_irq()
	s390: remove indirect branch from do_softirq_own_stack
	efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode
	ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr
	tick/broadcast: Use for_each_cpu() specially on UP kernels
	ARM: 8769/1: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
	ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
	ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
	Btrfs: fix xattr loss after power failure
	btrfs: fix crash when trying to resume balance without the resume flag
	btrfs: fix reading stale metadata blocks after degraded raid1 mounts
	net: test tailroom before appending to linear skb
	packet: in packet_snd start writing at link layer allocation
	sock_diag: fix use-after-free read in __sk_free
	tcp: purge write queue in tcp_connect_init()
	ext2: fix a block leak
	s390: add assembler macros for CPU alternatives
	s390: move expoline assembler macros to a header
	s390/lib: use expoline for indirect branches
	s390/kernel: use expoline for indirect branches
	s390: move spectre sysfs attribute code
	s390: extend expoline to BC instructions
	s390: use expoline thunks in the BPF JIT
	scsi: libsas: defer ata device eh commands to libata
	scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()
	scsi: zfcp: fix infinite iteration on ERP ready list
	dmaengine: ensure dmaengine helpers check valid callback
	time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting
	gpio: rcar: Add Runtime PM handling for interrupts
	cfg80211: limit wiphy names to 128 bytes
	hfsplus: stop workqueue when fill_super() failed
	x86/kexec: Avoid double free_page() upon do_kexec_load() failure
	Linux 4.4.133

Change-Id: I0554b12889bc91add2a444da95f18d59c6fb9cdb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-05-26 10:12:26 +02:00
Liu Bo
e2da30c54e btrfs: fix reading stale metadata blocks after degraded raid1 mounts
commit 02a3307aa9c20b4f6626255b028f07f6cfa16feb upstream.

If a btree block, aka. extent buffer, is not available in the extent
buffer cache, it'll be read out from the disk instead, i.e.

btrfs_search_slot()
  read_block_for_search()  # hold parent and its lock, go to read child
    btrfs_release_path()
    read_tree_block()  # read child

Unfortunately, the parent lock got released before reading child, so
commit 5bdd3536cb ("Btrfs: Fix block generation verification race") had
used 0 as parent transid to read the child block.  It forces
read_tree_block() not to check if parent transid is different with the
generation id of the child that it reads out from disk.

A simple PoC is included in btrfs/124,

0. A two-disk raid1 btrfs,

1. Right after mkfs.btrfs, block A is allocated to be device tree's root.

2. Mount this filesystem and put it in use, after a while, device tree's
   root got COW but block A hasn't been allocated/overwritten yet.

3. Umount it and reload the btrfs module to remove both disks from the
   global @fs_devices list.

4. mount -odegraded dev1 and write some data, so now block A is allocated
   to be a leaf in checksum tree.  Note that only dev1 has the latest
   metadata of this filesystem.

5. Umount it and mount it again normally (with both disks), since raid1
   can pick up one disk by the writer task's pid, if btrfs_search_slot()
   needs to read block A, dev2 which does NOT have the latest metadata
   might be read for block A, then we got a stale block A.

6. As parent transid is not checked, block A is marked as uptodate and
   put into the extent buffer cache, so the future search won't bother
   to read disk again, which means it'll make changes on this stale
   one and make it dirty and flush it onto disk.

To avoid the problem, parent transid needs to be passed to
read_tree_block().

In order to get a valid parent transid, we need to hold the parent's
lock until finishing reading child.

This patch needs to be slightly adapted for stable kernels, the
&first_key parameter added to read_tree_block() is from 4.16+
(581c1760415c4). The fix is to replace 0 by 'gen'.

Fixes: 5bdd3536cb ("Btrfs: Fix block generation verification race")
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-26 08:48:57 +02:00
Anand Jain
68dea4bd04 btrfs: fix crash when trying to resume balance without the resume flag
commit 02ee654d3a04563c67bfe658a05384548b9bb105 upstream.

We set the BTRFS_BALANCE_RESUME flag in the btrfs_recover_balance()
only, which isn't called during the remount. So when resuming from
the paused balance we hit the bug:

 kernel: kernel BUG at fs/btrfs/volumes.c:3890!
 ::
 kernel:  balance_kthread+0x51/0x60 [btrfs]
 kernel:  kthread+0x111/0x130
 ::
 kernel: RIP: btrfs_balance+0x12e1/0x1570 [btrfs] RSP: ffffba7d0090bde8

Reproducer:
  On a mounted filesystem:

  btrfs balance start --full-balance /btrfs
  btrfs balance pause /btrfs
  mount -o remount,ro /dev/sdb /btrfs
  mount -o remount,rw /dev/sdb /btrfs

To fix this set the BTRFS_BALANCE_RESUME flag in
btrfs_resume_balance_async().

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-26 08:48:57 +02:00
Filipe Manana
72d1df8a89 Btrfs: fix xattr loss after power failure
commit 9a8fca62aacc1599fea8e813d01e1955513e4fad upstream.

If a file has xattrs, we fsync it, to ensure we clear the flags
BTRFS_INODE_NEEDS_FULL_SYNC and BTRFS_INODE_COPY_EVERYTHING from its
inode, the current transaction commits and then we fsync it (without
either of those bits being set in its inode), we end up not logging
all its xattrs. This results in deleting all xattrs when replying the
log after a power failure.

Trivial reproducer

  $ mkfs.btrfs -f /dev/sdb
  $ mount /dev/sdb /mnt

  $ touch /mnt/foobar
  $ setfattr -n user.xa -v qwerty /mnt/foobar
  $ xfs_io -c "fsync" /mnt/foobar

  $ sync

  $ xfs_io -c "pwrite -S 0xab 0 64K" /mnt/foobar
  $ xfs_io -c "fsync" /mnt/foobar
  <power failure>

  $ mount /dev/sdb /mnt
  $ getfattr --absolute-names --dump /mnt/foobar
  <empty output>
  $

So fix this by making sure all xattrs are logged if we log a file's inode
item and neither the flags BTRFS_INODE_NEEDS_FULL_SYNC nor
BTRFS_INODE_COPY_EVERYTHING were set in the inode.

Fixes: 36283bf777 ("Btrfs: fix fsync xattr loss in the fast fsync path")
Cc: <stable@vger.kernel.org> # 4.2+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-26 08:48:57 +02:00
Greg Kroah-Hartman
89904ccfe2 This is the 4.4.128 stable release
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Merge 4.4.128 into android-4.4

Changes in 4.4.128
	cfg80211: make RATE_INFO_BW_20 the default
	md/raid5: make use of spin_lock_irq over local_irq_disable + spin_lock
	rtc: snvs: fix an incorrect check of return value
	x86/asm: Don't use RBP as a temporary register in csum_partial_copy_generic()
	NFSv4.1: RECLAIM_COMPLETE must handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION
	IB/srpt: Fix abort handling
	af_key: Fix slab-out-of-bounds in pfkey_compile_policy.
	mac80211: bail out from prep_connection() if a reconfig is ongoing
	bna: Avoid reading past end of buffer
	qlge: Avoid reading past end of buffer
	ipmi_ssif: unlock on allocation failure
	net: cdc_ncm: Fix TX zero padding
	net: ethernet: ti: cpsw: adjust cpsw fifos depth for fullduplex flow control
	lockd: fix lockd shutdown race
	drivers/misc/vmw_vmci/vmci_queue_pair.c: fix a couple integer overflow tests
	pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid()
	s390: move _text symbol to address higher than zero
	net/mlx4_en: Avoid adding steering rules with invalid ring
	NFSv4.1: Work around a Linux server bug...
	CIFS: silence lockdep splat in cifs_relock_file()
	blk-mq: NVMe 512B/4K+T10 DIF/DIX format returns I/O error on dd with split op
	net: qca_spi: Fix alignment issues in rx path
	netxen_nic: set rcode to the return status from the call to netxen_issue_cmd
	Input: elan_i2c - check if device is there before really probing
	Input: elantech - force relative mode on a certain module
	KVM: PPC: Book3S PR: Check copy_to/from_user return values
	vmxnet3: ensure that adapter is in proper state during force_close
	SMB2: Fix share type handling
	bus: brcmstb_gisb: Use register offsets with writes too
	bus: brcmstb_gisb: correct support for 64-bit address output
	PowerCap: Fix an error code in powercap_register_zone()
	ARM: dts: imx53-qsrb: Pulldown PMIC IRQ pin
	staging: wlan-ng: prism2mgmt.c: fixed a double endian conversion before calling hfa384x_drvr_setconfig16, also fixes relative sparse warning
	x86/tsc: Provide 'tsc=unstable' boot parameter
	ARM: dts: imx6qdl-wandboard: Fix audio channel swap
	ipv6: avoid dad-failures for addresses with NODAD
	async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome()
	usb: dwc3: keystone: check return value
	btrfs: fix incorrect error return ret being passed to mapping_set_error
	ata: libahci: properly propagate return value of platform_get_irq()
	neighbour: update neigh timestamps iff update is effective
	arp: honour gratuitous ARP _replies_
	usb: chipidea: properly handle host or gadget initialization failure
	USB: ene_usb6250: fix first command execution
	net: x25: fix one potential use-after-free issue
	USB: ene_usb6250: fix SCSI residue overwriting
	serial: 8250: omap: Disable DMA for console UART
	serial: sh-sci: Fix race condition causing garbage during shutdown
	sh_eth: Use platform device for printing before register_netdev()
	scsi: csiostor: fix use after free in csio_hw_use_fwconfig()
	powerpc/mm: Fix virt_addr_valid() etc. on 64-bit hash
	ath5k: fix memory leak on buf on failed eeprom read
	selftests/powerpc: Fix TM resched DSCR test with some compilers
	xfrm: fix state migration copy replay sequence numbers
	iio: hi8435: avoid garbage event at first enable
	iio: hi8435: cleanup reset gpio
	ext4: handle the rest of ext4_mb_load_buddy() ENOMEM errors
	md-cluster: fix potential lock issue in add_new_disk
	ARM: davinci: da8xx: Create DSP device only when assigned memory
	ray_cs: Avoid reading past end of buffer
	leds: pca955x: Correct I2C Functionality
	sched/numa: Use down_read_trylock() for the mmap_sem
	net/mlx5: Tolerate irq_set_affinity_hint() failures
	selinux: do not check open permission on sockets
	block: fix an error code in add_partition()
	mlx5: fix bug reading rss_hash_type from CQE
	net: ieee802154: fix net_device reference release too early
	libceph: NULL deref on crush_decode() error path
	netfilter: ctnetlink: fix incorrect nf_ct_put during hash resize
	pNFS/flexfiles: missing error code in ff_layout_alloc_lseg()
	ASoC: rsnd: SSI PIO adjust to 24bit mode
	scsi: bnx2fc: fix race condition in bnx2fc_get_host_stats()
	fix race in drivers/char/random.c:get_reg()
	ext4: fix off-by-one on max nr_pages in ext4_find_unwritten_pgoff()
	tcp: better validation of received ack sequences
	net: move somaxconn init from sysctl code
	Input: elan_i2c - clear INT before resetting controller
	bonding: Don't update slave->link until ready to commit
	KVM: nVMX: Fix handling of lmsw instruction
	net: llc: add lock_sock in llc_ui_bind to avoid a race condition
	ARM: dts: ls1021a: add "fsl,ls1021a-esdhc" compatible string to esdhc node
	thermal: power_allocator: fix one race condition issue for thermal_instances list
	perf probe: Add warning message if there is unexpected event name
	l2tp: fix missing print session offset info
	rds; Reset rs->rs_bound_addr in rds_add_bound() failure path
	hwmon: (ina2xx) Make calibration register value fixed
	media: videobuf2-core: don't go out of the buffer range
	ASoC: Intel: cht_bsw_rt5645: Analog Mic support
	scsi: libiscsi: Allow sd_shutdown on bad transport
	scsi: mpt3sas: Proper handling of set/clear of "ATA command pending" flag.
	vfb: fix video mode and line_length being set when loaded
	gpio: label descriptors using the device name
	ASoC: Intel: sst: Fix the return value of 'sst_send_byte_stream_mrfld()'
	wl1251: check return from call to wl1251_acx_arp_ip_filter
	hdlcdrv: Fix divide by zero in hdlcdrv_ioctl
	ovl: filter trusted xattr for non-admin
	powerpc/[booke|4xx]: Don't clobber TCR[WP] when setting TCR[DIE]
	dmaengine: imx-sdma: Handle return value of clk_prepare_enable
	arm64: futex: Fix undefined behaviour with FUTEX_OP_OPARG_SHIFT usage
	net/mlx5: avoid build warning for uniprocessor
	cxgb4: FW upgrade fixes
	rtc: opal: Handle disabled TPO in opal_get_tpo_time()
	rtc: interface: Validate alarm-time before handling rollover
	SUNRPC: ensure correct error is reported by xs_tcp_setup_socket()
	net: freescale: fix potential null pointer dereference
	KVM: SVM: do not zero out segment attributes if segment is unusable or not present
	clk: scpi: fix return type of __scpi_dvfs_round_rate
	clk: Fix __set_clk_rates error print-string
	powerpc/spufs: Fix coredump of SPU contexts
	perf trace: Add mmap alias for s390
	qlcnic: Fix a sleep-in-atomic bug in qlcnic_82xx_hw_write_wx_2M and qlcnic_82xx_hw_read_wx_2M
	mISDN: Fix a sleep-in-atomic bug
	drm/omap: fix tiled buffer stride calculations
	cxgb4: fix incorrect cim_la output for T6
	Fix serial console on SNI RM400 machines
	bio-integrity: Do not allocate integrity context for bio w/o data
	skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow
	sit: reload iphdr in ipip6_rcv
	net/mlx4: Fix the check in attaching steering rules
	net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport
	perf header: Set proper module name when build-id event found
	perf report: Ensure the perf DSO mapping matches what libdw sees
	tags: honor COMPILED_SOURCE with apart output directory
	e1000e: fix race condition around skb_tstamp_tx()
	cx25840: fix unchecked return values
	mceusb: sporadic RX truncation corruption fix
	net: phy: avoid genphy_aneg_done() for PHYs without clause 22 support
	ARM: imx: Add MXC_CPU_IMX6ULL and cpu_is_imx6ull
	e1000e: Undo e1000e_pm_freeze if __e1000_shutdown fails
	perf/core: Correct event creation with PERF_FORMAT_GROUP
	MIPS: mm: fixed mappings: correct initialisation
	MIPS: mm: adjust PKMAP location
	MIPS: kprobes: flush_insn_slot should flush only if probe initialised
	Fix loop device flush before configure v3
	net: emac: fix reset timeout with AR8035 phy
	perf tests: Decompress kernel module before objdump
	skbuff: only inherit relevant tx_flags
	xen: avoid type warning in xchg_xen_ulong
	bnx2x: Allow vfs to disable txvlan offload
	sctp: fix recursive locking warning in sctp_do_peeloff
	sparc64: ldc abort during vds iso boot
	iio: magnetometer: st_magn_spi: fix spi_device_id table
	Bluetooth: Send HCI Set Event Mask Page 2 command only when needed
	cpuidle: dt: Add missing 'of_node_put()'
	ACPICA: Events: Add runtime stub support for event APIs
	ACPICA: Disassembler: Abort on an invalid/unknown AML opcode
	s390/dasd: fix hanging safe offline
	vxlan: dont migrate permanent fdb entries during learn
	bcache: stop writeback thread after detaching
	bcache: segregate flash only volume write streams
	scsi: libsas: fix memory leak in sas_smp_get_phy_events()
	scsi: libsas: fix error when getting phy events
	scsi: libsas: initialize sas_phy status according to response of DISCOVER
	blk-mq: fix kernel oops in blk_mq_tag_idle()
	tty: n_gsm: Allow ADM response in addition to UA for control dlci
	EDAC, mv64x60: Fix an error handling path
	cxgb4vf: Fix SGE FL buffer initialization logic for 64K pages
	perf tools: Fix copyfile_offset update of output offset
	ipsec: check return value of skb_to_sgvec always
	rxrpc: check return value of skb_to_sgvec always
	virtio_net: check return value of skb_to_sgvec always
	virtio_net: check return value of skb_to_sgvec in one more location
	random: use lockless method of accessing and updating f->reg_idx
	futex: Remove requirement for lock_page() in get_futex_key()
	Kbuild: provide a __UNIQUE_ID for clang
	arp: fix arp_filter on l3slave devices
	net: fix possible out-of-bound read in skb_network_protocol()
	net/ipv6: Fix route leaking between VRFs
	netlink: make sure nladdr has correct size in netlink_connect()
	net/sched: fix NULL dereference in the error path of tcf_bpf_init()
	pptp: remove a buggy dst release in pptp_connect()
	sctp: do not leak kernel memory to user space
	sctp: sctp_sockaddr_af must check minimal addr length for AF_INET6
	sky2: Increase D3 delay to sky2 stops working after suspend
	vhost: correctly remove wait queue during poll failure
	vlan: also check phy_driver ts_info for vlan's real device
	bonding: fix the err path for dev hwaddr sync in bond_enslave
	bonding: move dev_mc_sync after master_upper_dev_link in bond_enslave
	bonding: process the err returned by dev_set_allmulti properly in bond_enslave
	net: fool proof dev_valid_name()
	ip_tunnel: better validate user provided tunnel names
	ipv6: sit: better validate user provided tunnel names
	ip6_gre: better validate user provided tunnel names
	ip6_tunnel: better validate user provided tunnel names
	vti6: better validate user provided tunnel names
	r8169: fix setting driver_data after register_netdev
	net sched actions: fix dumping which requires several messages to user space
	net/ipv6: Increment OUTxxx counters after netfilter hook
	ipv6: the entire IPv6 header chain must fit the first fragment
	vrf: Fix use after free and double free in vrf_finish_output
	Revert "xhci: plat: Register shutdown for xhci_plat"
	Linux 4.4.128

Change-Id: I9c1e58f634cc18f15a840c9d192c892dfcc5ff73
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-04-14 15:35:32 +02:00
Colin Ian King
ef51fe4d40 btrfs: fix incorrect error return ret being passed to mapping_set_error
[ Upstream commit bff5baf8aa37a97293725a16c03f49872249c07e ]

The setting of return code ret should be based on the error code
passed into function end_extent_writepage and not on ret. Thanks
to Liu Bo for spotting this mistake in the original fix I submitted.

Detected by CoverityScan, CID#1414312 ("Logically dead code")

Fixes: 5dca6eea91 ("Btrfs: mark mapping with error flag to report errors to userspace")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-13 19:50:06 +02:00
Greg Kroah-Hartman
851fb4da32 This is the 4.4.124 stable release
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Merge 4.4.124 into android-4.4

Changes in 4.4.124
	tpm: fix potential buffer overruns caused by bit glitches on the bus
	tpm_tis: fix potential buffer overruns caused by bit glitches on the bus
	SMB3: Validate negotiate request must always be signed
	CIFS: Enable encryption during session setup phase
	staging: android: ashmem: Fix possible deadlock in ashmem_ioctl
	platform/x86: asus-nb-wmi: Add wapf4 quirk for the X302UA
	regulator: anatop: set default voltage selector for pcie
	x86: i8259: export legacy_pic symbol
	rtc: cmos: Do not assume irq 8 for rtc when there are no legacy irqs
	Input: ar1021_i2c - fix too long name in driver's device table
	time: Change posix clocks ops interfaces to use timespec64
	ACPI/processor: Fix error handling in __acpi_processor_start()
	ACPI/processor: Replace racy task affinity logic
	cpufreq/sh: Replace racy task affinity logic
	genirq: Use irqd_get_trigger_type to compare the trigger type for shared IRQs
	i2c: i2c-scmi: add a MS HID
	net: ipv6: send unsolicited NA on admin up
	media/dvb-core: Race condition when writing to CAM
	spi: dw: Disable clock after unregistering the host
	ath: Fix updating radar flags for coutry code India
	clk: ns2: Correct SDIO bits
	scsi: virtio_scsi: Always try to read VPD pages
	KVM: PPC: Book3S PR: Exit KVM on failed mapping
	ARM: 8668/1: ftrace: Fix dynamic ftrace with DEBUG_RODATA and !FRAME_POINTER
	iommu/omap: Register driver before setting IOMMU ops
	md/raid10: wait up frozen array in handle_write_completed
	NFS: Fix missing pg_cleanup after nfs_pageio_cond_complete()
	tcp: remove poll() flakes with FastOpen
	e1000e: fix timing for 82579 Gigabit Ethernet controller
	ALSA: hda - Fix headset microphone detection for ASUS N551 and N751
	IB/ipoib: Fix deadlock between ipoib_stop and mcast join flow
	IB/ipoib: Update broadcast object if PKey value was changed in index 0
	HSI: ssi_protocol: double free in ssip_pn_xmit()
	IB/mlx4: Take write semaphore when changing the vma struct
	IB/mlx4: Change vma from shared to private
	ASoC: Intel: Skylake: Uninitialized variable in probe_codec()
	Fix driver usage of 128B WQEs when WQ_CREATE is V1.
	netfilter: xt_CT: fix refcnt leak on error path
	openvswitch: Delete conntrack entry clashing with an expectation.
	mmc: host: omap_hsmmc: checking for NULL instead of IS_ERR()
	wan: pc300too: abort path on failure
	qlcnic: fix unchecked return value
	scsi: mac_esp: Replace bogus memory barrier with spinlock
	infiniband/uverbs: Fix integer overflows
	NFS: don't try to cross a mountpount when there isn't one there.
	iio: st_pressure: st_accel: Initialise sensor platform data properly
	mt7601u: check return value of alloc_skb
	rndis_wlan: add return value validation
	Btrfs: send, fix file hole not being preserved due to inline extent
	mac80211: don't parse encrypted management frames in ieee80211_frame_acked
	mfd: palmas: Reset the POWERHOLD mux during power off
	mtip32xx: use runtime tag to initialize command header
	staging: unisys: visorhba: fix s-Par to boot with option CONFIG_VMAP_STACK set to y
	staging: wilc1000: fix unchecked return value
	mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a
	ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP
	ipmi/watchdog: fix wdog hang on panic waiting for ipmi response
	ACPI / PMIC: xpower: Fix power_table addresses
	drm/nouveau/kms: Increase max retries in scanout position queries.
	bnx2x: Align RX buffers
	power: supply: pda_power: move from timer to delayed_work
	Input: twl4030-pwrbutton - use correct device for irq request
	md/raid10: skip spare disk as 'first' disk
	ia64: fix module loading for gcc-5.4
	tcm_fileio: Prevent information leak for short reads
	video: fbdev: udlfb: Fix buffer on stack
	sm501fb: don't return zero on failure path in sm501fb_start()
	net: hns: fix ethtool_get_strings overflow in hns driver
	cifs: small underflow in cnvrtDosUnixTm()
	rtc: ds1374: wdt: Fix issue with timeout scaling from secs to wdt ticks
	rtc: ds1374: wdt: Fix stop/start ioctl always returning -EINVAL
	perf tests kmod-path: Don't fail if compressed modules aren't supported
	Bluetooth: hci_qca: Avoid setup failure on missing rampatch
	media: c8sectpfe: fix potential NULL pointer dereference in c8sectpfe_timer_interrupt
	drm/msm: fix leak in failed get_pages
	RDMA/iwpm: Fix uninitialized error code in iwpm_send_mapinfo()
	rtlwifi: rtl_pci: Fix the bug when inactiveps is enabled.
	media: bt8xx: Fix err 'bt878_probe()'
	media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
	cros_ec: fix nul-termination for firmware build info
	platform/chrome: Use proper protocol transfer function
	mmc: avoid removing non-removable hosts during suspend
	IB/ipoib: Avoid memory leak if the SA returns a different DGID
	RDMA/cma: Use correct size when writing netlink stats
	IB/umem: Fix use of npages/nmap fields
	vgacon: Set VGA struct resource types
	drm/omap: DMM: Check for DMM readiness after successful transaction commit
	pty: cancel pty slave port buf's work in tty_release
	coresight: Fix disabling of CoreSight TPIU
	pinctrl: Really force states during suspend/resume
	iommu/vt-d: clean up pr_irq if request_threaded_irq fails
	ip6_vti: adjust vti mtu according to mtu of lower device
	RDMA/ocrdma: Fix permissions for OCRDMA_RESET_STATS
	nfsd4: permit layoutget of executable-only files
	clk: si5351: Rename internal plls to avoid name collisions
	dmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63
	RDMA/ucma: Fix access to non-initialized CM_ID object
	Linux 4.4.124

Change-Id: Iac6f5bda7941f032c5b1f58750e084140b0e3f23
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-03-25 10:51:55 +02:00
Filipe Manana
266bbc907c Btrfs: send, fix file hole not being preserved due to inline extent
[ Upstream commit e1cbfd7bf6dabdac561c75d08357571f44040a45 ]

Normally we don't have inline extents followed by regular extents, but
there's currently at least one harmless case where this happens. For
example, when the page size is 4Kb and compression is enabled:

  $ mkfs.btrfs -f /dev/sdb
  $ mount -o compress /dev/sdb /mnt
  $ xfs_io -f -c "pwrite -S 0xaa 0 4K" -c "fsync" /mnt/foobar
  $ xfs_io -c "pwrite -S 0xbb 8K 4K" -c "fsync" /mnt/foobar

In this case we get a compressed inline extent, representing 4Kb of
data, followed by a hole extent and then a regular data extent. The
inline extent was not expanded/converted to a regular extent exactly
because it represents 4Kb of data. This does not cause any apparent
problem (such as the issue solved by commit e1699d2d7bf6
("btrfs: add missing memset while reading compressed inline extents"))
except trigger an unexpected case in the incremental send code path
that makes us issue an operation to write a hole when it's not needed,
resulting in more writes at the receiver and wasting space at the
receiver.

So teach the incremental send code to deal with this particular case.

The issue can be currently triggered by running fstests btrfs/137 with
compression enabled (MOUNT_OPTIONS="-o compress" ./check btrfs/137).

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24 10:58:44 +01:00
Greg Kroah-Hartman
79e7124a51 This is the 4.4.123 stable release
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Merge 4.4.123 into android-4.4

Changes in 4.4.123
	blkcg: fix double free of new_blkg in blkcg_init_queue
	Input: tsc2007 - check for presence and power down tsc2007 during probe
	staging: speakup: Replace BUG_ON() with WARN_ON().
	staging: wilc1000: add check for kmalloc allocation failure.
	HID: reject input outside logical range only if null state is set
	drm: qxl: Don't alloc fbdev if emulation is not supported
	ath10k: fix a warning during channel switch with multiple vaps
	PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown()
	selinux: check for address length in selinux_socket_bind()
	perf sort: Fix segfault with basic block 'cycles' sort dimension
	i40e: Acquire NVM lock before reads on all devices
	i40e: fix ethtool to get EEPROM data from X722 interface
	perf tools: Make perf_event__synthesize_mmap_events() scale
	drivers: net: xgene: Fix hardware checksum setting
	drm: Defer disabling the vblank IRQ until the next interrupt (for instant-off)
	ath10k: disallow DFS simulation if DFS channel is not enabled
	perf probe: Return errno when not hitting any event
	HID: clamp input to logical range if no null state
	net/8021q: create device with all possible features in wanted_features
	ARM: dts: Adjust moxart IRQ controller and flags
	batman-adv: handle race condition for claims between gateways
	of: fix of_device_get_modalias returned length when truncating buffers
	solo6x10: release vb2 buffers in solo_stop_streaming()
	scsi: ipr: Fix missed EH wakeup
	media: i2c/soc_camera: fix ov6650 sensor getting wrong clock
	timers, sched_clock: Update timeout for clock wrap
	sysrq: Reset the watchdog timers while displaying high-resolution timers
	Input: qt1070 - add OF device ID table
	sched: act_csum: don't mangle TCP and UDP GSO packets
	ASoC: rcar: ssi: don't set SSICR.CKDV = 000 with SSIWSR.CONT
	spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer
	tcp: sysctl: Fix a race to avoid unexpected 0 window from space
	dmaengine: imx-sdma: add 1ms delay to ensure SDMA channel is stopped
	driver: (adm1275) set the m,b and R coefficients correctly for power
	mm: Fix false-positive VM_BUG_ON() in page_cache_{get,add}_speculative()
	blk-throttle: make sure expire time isn't too big
	f2fs: relax node version check for victim data in gc
	bonding: refine bond_fold_stats() wrap detection
	braille-console: Fix value returned by _braille_console_setup
	drm/vmwgfx: Fixes to vmwgfx_fb
	vxlan: vxlan dev should inherit lowerdev's gso_max_size
	NFC: nfcmrvl: Include unaligned.h instead of access_ok.h
	NFC: nfcmrvl: double free on error path
	ARM: dts: r8a7790: Correct parent of SSI[0-9] clocks
	ARM: dts: r8a7791: Correct parent of SSI[0-9] clocks
	powerpc: Avoid taking a data miss on every userspace instruction miss
	net/faraday: Add missing include of of.h
	ARM: dts: koelsch: Correct clock frequency of X2 DU clock input
	reiserfs: Make cancel_old_flush() reliable
	ALSA: firewire-digi00x: handle all MIDI messages on streaming packets
	fm10k: correctly check if interface is removed
	scsi: ses: don't get power status of SES device slot on probe
	apparmor: Make path_max parameter readonly
	iommu/iova: Fix underflow bug in __alloc_and_insert_iova_range
	video: ARM CLCD: fix dma allocation size
	drm/radeon: Fail fb creation from imported dma-bufs.
	drm/amdgpu: Fail fb creation from imported dma-bufs. (v2)
	coresight: Fixes coresight DT parse to get correct output port ID.
	MIPS: BPF: Quit clobbering callee saved registers in JIT code.
	MIPS: BPF: Fix multiple problems in JIT skb access helpers.
	MIPS: r2-on-r6-emu: Fix BLEZL and BGTZL identification
	MIPS: r2-on-r6-emu: Clear BLTZALL and BGEZALL debugfs counters
	regulator: isl9305: fix array size
	md/raid6: Fix anomily when recovering a single device in RAID6.
	usb: dwc2: Make sure we disconnect the gadget state
	usb: gadget: dummy_hcd: Fix wrong power status bit clear/reset in dummy_hub_control()
	drivers/perf: arm_pmu: handle no platform_device
	perf inject: Copy events when reordering events in pipe mode
	perf session: Don't rely on evlist in pipe mode
	scsi: sg: check for valid direction before starting the request
	scsi: sg: close race condition in sg_remove_sfp_usercontext()
	kprobes/x86: Fix kprobe-booster not to boost far call instructions
	kprobes/x86: Set kprobes pages read-only
	pwm: tegra: Increase precision in PWM rate calculation
	wil6210: fix memory access violation in wil_memcpy_from/toio_32
	drm/edid: set ELD connector type in drm_edid_to_eld()
	video/hdmi: Allow "empty" HDMI infoframes
	HID: elo: clear BTN_LEFT mapping
	ARM: dts: exynos: Correct Trats2 panel reset line
	sched: Stop switched_to_rt() from sending IPIs to offline CPUs
	sched: Stop resched_cpu() from sending IPIs to offline CPUs
	test_firmware: fix setting old custom fw path back on exit
	net: xfrm: allow clearing socket xfrm policies.
	mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]()
	ARM: dts: am335x-pepper: Fix the audio CODEC's reset pin
	ARM: dts: omap3-n900: Fix the audio CODEC's reset pin
	ath10k: update tdls teardown state to target
	cpufreq: Fix governor module removal race
	clk: qcom: msm8916: fix mnd_width for codec_digcodec
	ath10k: fix invalid STS_CAP_OFFSET_MASK
	tools/usbip: fixes build with musl libc toolchain
	spi: sun6i: disable/unprepare clocks on remove
	scsi: core: scsi_get_device_flags_keyed(): Always return device flags
	scsi: devinfo: apply to HP XP the same flags as Hitachi VSP
	scsi: dh: add new rdac devices
	media: cpia2: Fix a couple off by one bugs
	veth: set peer GSO values
	drm/amdkfd: Fix memory leaks in kfd topology
	agp/intel: Flush all chipset writes after updating the GGTT
	mac80211_hwsim: enforce PS_MANUAL_POLL to be set after PS_ENABLED
	mac80211: remove BUG() when interface type is invalid
	ASoC: nuc900: Fix a loop timeout test
	ipvlan: add L2 check for packets arriving via virtual devices
	rcutorture/configinit: Fix build directory error message
	ima: relax requiring a file signature for new files with zero length
	selftests/x86/entry_from_vm86: Exit with 1 if we fail
	selftests/x86: Add tests for User-Mode Instruction Prevention
	selftests/x86: Add tests for the STR and SLDT instructions
	selftests/x86/entry_from_vm86: Add test cases for POPF
	x86/vm86/32: Fix POPF emulation
	x86/mm: Fix vmalloc_fault to use pXd_large
	ALSA: pcm: Fix UAF in snd_pcm_oss_get_formats()
	ALSA: hda - Revert power_save option default value
	ALSA: seq: Fix possible UAF in snd_seq_check_queue()
	ALSA: seq: Clear client entry before deleting else at closing
	drm/amdgpu/dce: Don't turn off DP sink when disconnected
	fs: Teach path_connected to handle nfs filesystems with multiple roots.
	lock_parent() needs to recheck if dentry got __dentry_kill'ed under it
	fs/aio: Add explicit RCU grace period when freeing kioctx
	fs/aio: Use RCU accessors for kioctx_table->table[]
	irqchip/gic-v3-its: Ensure nr_ites >= nr_lpis
	scsi: sg: fix SG_DXFER_FROM_DEV transfers
	scsi: sg: fix static checker warning in sg_is_valid_dxfer
	scsi: sg: only check for dxfer_len greater than 256M
	ARM: dts: LogicPD Torpedo: Fix I2C1 pinmux
	btrfs: alloc_chunk: fix DUP stripe size handling
	btrfs: Fix use-after-free when cleaning up fs_devs with a single stale device
	USB: gadget: udc: Add missing platform_device_put() on error in bdc_pci_probe()
	usb: gadget: bdc: 64-bit pointer capability check
	bpf: fix incorrect sign extension in check_alu_op()
	Linux 4.4.123

Change-Id: Ieb89411248f93522dde29edb8581f8ece22e33a7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-03-22 09:57:28 +01:00
Nikolay Borisov
e1994e4d56 btrfs: Fix use-after-free when cleaning up fs_devs with a single stale device
commit fd649f10c3d21ee9d7542c609f29978bdf73ab94 upstream.

Commit 4fde46f0cc ("Btrfs: free the stale device") introduced
btrfs_free_stale_device which iterates the device lists for all
registered btrfs filesystems and deletes those devices which aren't
mounted. In a btrfs_devices structure has only 1 device attached to it
and it is unused then btrfs_free_stale_devices will proceed to also free
the btrfs_fs_devices struct itself. Currently this leads to a use after
free since list_for_each_entry will try to perform a check on the
already freed memory to see if it has to terminate the loop.

The fix is to use 'break' when we know we are freeing the current
fs_devs.

Fixes: 4fde46f0cc ("Btrfs: free the stale device")
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:23:32 +01:00
Hans van Kranenburg
97c3e46ef5 btrfs: alloc_chunk: fix DUP stripe size handling
commit 92e222df7b8f05c565009c7383321b593eca488b upstream.

In case of using DUP, we search for enough unallocated disk space on a
device to hold two stripes.

The devices_info[ndevs-1].max_avail that holds the amount of unallocated
space found is directly assigned to stripe_size, while it's actually
twice the stripe size.

Later on in the code, an unconditional division of stripe_size by
dev_stripes corrects the value, but in the meantime there's a check to
see if the stripe_size does not exceed max_chunk_size. Since during this
check stripe_size is twice the amount as intended, the check will reduce
the stripe_size to max_chunk_size if the actual correct to be used
stripe_size is more than half the amount of max_chunk_size.

The unconditional division later tries to correct stripe_size, but will
actually make sure we can't allocate more than half the max_chunk_size.

Fix this by moving the division by dev_stripes before the max chunk size
check, so it always contains the right value, instead of putting a duct
tape division in further on to get it fixed again.

Since in all other cases than DUP, dev_stripes is 1, this change only
affects DUP.

Other attempts in the past were made to fix this:
* 37db63a400 "Btrfs: fix max chunk size check in chunk allocator" tried
to fix the same problem, but still resulted in part of the code acting
on a wrongly doubled stripe_size value.
* 86db25785a "Btrfs: fix max chunk size on raid5/6" unintentionally
broke this fix again.

The real problem was already introduced with the rest of the code in
73c5de0051.

The user visible result however will be that the max chunk size for DUP
will suddenly double, while it's actually acting according to the limits
in the code again like it was 5 years ago.

Reported-by: Naohiro Aota <naohiro.aota@wdc.com>
Link: https://www.spinics.net/lists/linux-btrfs/msg69752.html
Fixes: 73c5de0051 ("btrfs: quasi-round-robin for chunk allocation")
Fixes: 86db25785a ("Btrfs: fix max chunk size on raid5/6")
Signed-off-by: Hans van Kranenburg <hans.van.kranenburg@mendix.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ update comment ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:23:32 +01:00
Greg Kroah-Hartman
2b1843d7d0 This is the 4.4.121 stable release
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Merge 4.4.121 into android-4.4

Changes in 4.4.121
	tpm: st33zp24: fix potential buffer overruns caused by bit glitches on the bus
	tpm_i2c_infineon: fix potential buffer overruns caused by bit glitches on the bus
	tpm_i2c_nuvoton: fix potential buffer overruns caused by bit glitches on the bus
	ALSA: usb-audio: Add a quirck for B&W PX headphones
	ALSA: hda: Add a power_save blacklist
	cpufreq: s3c24xx: Fix broken s3c_cpufreq_init()
	media: m88ds3103: don't call a non-initalized function
	nospec: Allow index argument to have const-qualified type
	ARM: mvebu: Fix broken PL310_ERRATA_753970 selects
	KVM: mmu: Fix overlap between public and private memslots
	x86/syscall: Sanitize syscall table de-references under speculation fix
	btrfs: Don't clear SGID when inheriting ACLs
	ARM: dts: LogicPD Torpedo: Fix I2C1 pinmux
	x86/apic/vector: Handle legacy irq data correctly
	leds: do not overflow sysfs buffer in led_trigger_show
	x86/spectre: Fix an error message
	Revert "led: core: Fix brightness setting when setting delay_off=0"
	bridge: check brport attr show in brport_show
	fib_semantics: Don't match route with mismatching tclassid
	hdlc_ppp: carrier detect ok, don't turn off negotiation
	ipv6 sit: work around bogus gcc-8 -Wrestrict warning
	net: fix race on decreasing number of TX queues
	net: ipv4: don't allow setting net.ipv4.route.min_pmtu below 68
	netlink: ensure to loop over all netns in genlmsg_multicast_allns()
	ppp: prevent unregistered channels from connecting to PPP units
	udplite: fix partial checksum initialization
	sctp: fix dst refcnt leak in sctp_v4_get_dst
	sctp: fix dst refcnt leak in sctp_v6_get_dst()
	s390/qeth: fix SETIP command handling
	s390/qeth: fix IPA command submission race
	sctp: verify size of a new chunk in _sctp_make_chunk()
	net: mpls: Pull common label check into helper
	mpls, nospec: Sanitize array index in mpls_label_ok()
	dm io: fix duplicate bio completion due to missing ref count
	bpf, x64: implement retpoline for tail call
	btrfs: preserve i_mode if __btrfs_set_acl() fails
	Linux 4.4.121

Change-Id: Ifc1f73c407f35cc1815e6f69bbed838c8ca60bc2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-03-11 17:40:30 +01:00
Ernesto A. Fernández
0fc85640c6 btrfs: preserve i_mode if __btrfs_set_acl() fails
commit d7d824966530acfe32b94d1ed672e6fe1638cd68 upstream.

When changing a file's acl mask, btrfs_set_acl() will first set the
group bits of i_mode to the value of the mask, and only then set the
actual extended attribute representing the new acl.

If the second part fails (due to lack of space, for example) and the
file had no acl attribute to begin with, the system will from now on
assume that the mask permission bits are actual group permission bits,
potentially granting access to the wrong users.

Prevent this by restoring the original mode bits if __btrfs_set_acl
fails.

Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-11 16:19:47 +01:00
Jan Kara
aa75b56eb5 btrfs: Don't clear SGID when inheriting ACLs
commit b7f8a09f8097db776b8d160862540e4fc1f51296 upstream.

When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit
set, DIR1 is expected to have SGID bit set (and owning group equal to
the owning group of 'DIR0'). However when 'DIR0' also has some default
ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on
'DIR1' to get cleared if user is not member of the owning group.

Fix the problem by moving posix_acl_update_mode() out of
__btrfs_set_acl() into btrfs_set_acl(). That way the function will not be
called when inheriting ACLs which is what we want as it prevents SGID
bit clearing and the mode has been properly set by posix_acl_create()
anyway.

Fixes: 073931017b49d9458aa351605b43a7e34598caef
CC: stable@vger.kernel.org
CC: linux-btrfs@vger.kernel.org
CC: David Sterba <dsterba@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-11 16:19:45 +01:00
Greg Kroah-Hartman
5f7f76a551 This is the 4.4.118 stable release
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Merge 4.4.118 into android-4.4

Changes in 4.4.118
	net: add dst_cache support
	net: replace dst_cache ip6_tunnel implementation with the generic one
	cfg80211: check dev_set_name() return value
	mm,vmscan: Make unregister_shrinker() no-op if register_shrinker() failed.
	xfrm: Fix stack-out-of-bounds read on socket policy lookup.
	xfrm: check id proto in validate_tmpl()
	blktrace: fix unlocked registration of tracepoints
	drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all
	Provide a function to create a NUL-terminated string from unterminated data
	selinux: ensure the context is NUL terminated in security_context_to_sid_core()
	selinux: skip bounded transition processing if the policy isn't loaded
	crypto: x86/twofish-3way - Fix %rbp usage
	KVM: x86: fix escape of guest dr6 to the host
	netfilter: x_tables: fix int overflow in xt_alloc_table_info()
	netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_{match|target}
	netfilter: ipt_CLUSTERIP: fix out-of-bounds accesses in clusterip_tg_check()
	netfilter: on sockopt() acquire sock lock only in the required scope
	netfilter: xt_RATEEST: acquire xt_rateest_mutex for hash insert
	net: avoid skb_warn_bad_offload on IS_ERR
	ASoC: ux500: add MODULE_LICENSE tag
	video: fbdev/mmp: add MODULE_LICENSE
	arm64: dts: add #cooling-cells to CPU nodes
	Make DST_CACHE a silent config option
	dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock
	staging: android: ashmem: Fix a race condition in pin ioctls
	binder: check for binder_thread allocation failure in binder_poll()
	staging: iio: adc: ad7192: fix external frequency setting
	usbip: keep usbip_device sockfd state in sync with tcp_socket
	usb: build drivers/usb/common/ when USB_SUPPORT is set
	ARM: OMAP2+: Fix SRAM virt to phys translation for save_secure_ram_context
	ARM: AM33xx: PRM: Remove am33xx_pwrdm_read_prev_pwrst function
	ARM: dts: Fix omap4 hang with GPS connected to USB by using wakeupgen
	ARM: dts: am4372: Correct the interrupts_properties of McASP
	perf top: Fix window dimensions change handling
	perf bench numa: Fixup discontiguous/sparse numa nodes
	media: s5k6aa: describe some function parameters
	pinctrl: sunxi: Fix A80 interrupt pin bank
	RDMA/cma: Make sure that PSN is not over max allowed
	scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none
	ipvlan: Add the skb->mark as flow4's member to lookup route
	powerpc/perf: Fix oops when grouping different pmu events
	s390/dasd: prevent prefix I/O error
	gianfar: fix a flooded alignment reports because of padding issue.
	net_sched: red: Avoid devision by zero
	net_sched: red: Avoid illegal values
	btrfs: Fix possible off-by-one in btrfs_search_path_in_tree
	509: fix printing uninitialized stack memory when OID is empty
	dmaengine: ioat: Fix error handling path
	dmaengine: at_hdmac: fix potential NULL pointer dereference in atc_prep_dma_interleaved
	clk: fix a panic error caused by accessing NULL pointer
	ASoC: rockchip: disable clock on error
	spi: sun4i: disable clocks in the remove function
	xfrm: Fix stack-out-of-bounds with misconfigured transport mode policies.
	drm/armada: fix leak of crtc structure
	dmaengine: jz4740: disable/unprepare clk if probe fails
	mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
	x86/mm/kmmio: Fix mmiotrace for page unaligned addresses
	xen: XEN_ACPI_PROCESSOR is Dom0-only
	hippi: Fix a Fix a possible sleep-in-atomic bug in rr_close
	virtio_balloon: prevent uninitialized variable use
	isdn: icn: remove a #warning
	vmxnet3: prevent building with 64K pages
	gpio: intel-mid: Fix build warning when !CONFIG_PM
	platform/x86: intel_mid_thermal: Fix suspend handlers unused warning
	video: fbdev: via: remove possibly unused variables
	scsi: advansys: fix build warning for PCI=n
	x86/ras/inject: Make it depend on X86_LOCAL_APIC=y
	arm64: define BUG() instruction without CONFIG_BUG
	x86/fpu/math-emu: Fix possible uninitialized variable use
	tools build: Add tools tree support for 'make -s'
	x86/build: Silence the build with "make -s"
	thermal: fix INTEL_SOC_DTS_IOSF_CORE dependencies
	x86: add MULTIUSER dependency for KVM
	x86/platform: Add PCI dependency for PUNIT_ATOM_DEBUG
	scsi: advansys: fix uninitialized data access
	arm64: Kconfig: select COMPAT_BINFMT_ELF only when BINFMT_ELF is set
	ALSA: hda/ca0132 - fix possible NULL pointer use
	reiserfs: avoid a -Wmaybe-uninitialized warning
	ssb: mark ssb_bus_register as __maybe_unused
	thermal: spear: use __maybe_unused for PM functions
	x86/boot: Avoid warning for zero-filling .bss
	scsi: sim710: fix build warning
	drivers/net: fix eisa_driver probe section mismatch
	dpt_i2o: fix build warning
	profile: hide unused functions when !CONFIG_PROC_FS
	md: avoid warning for 32-bit sector_t
	mtd: ichxrom: maybe-uninitialized with gcc-4.9
	mtd: maps: add __init attribute
	mptfusion: hide unused seq_mpt_print_ioc_summary function
	scsi: fdomain: drop fdomain_pci_tbl when built-in
	video: fbdev: sis: remove unused variable
	staging: ste_rmi4: avoid unused function warnings
	fbdev: sis: enforce selection of at least one backend
	video: Use bool instead int pointer for get_opt_bool() argument
	scsi: mvumi: use __maybe_unused to hide pm functions
	SCSI: initio: remove duplicate module device table
	pwc: hide unused label
	usb: musb/ux500: remove duplicate check for dma_is_compatible
	tty: hvc_xen: hide xen_console_remove when unused
	target/user: Fix cast from pointer to phys_addr_t
	driver-core: use 'dev' argument in dev_dbg_ratelimited stub
	fbdev: auo_k190x: avoid unused function warnings
	amd-xgbe: Fix unused suspend handlers build warning
	mtd: sh_flctl: pass FIFO as physical address
	mtd: cfi: enforce valid geometry configuration
	fbdev: s6e8ax0: avoid unused function warnings
	modsign: hide openssl output in silent builds
	Drivers: hv: vmbus: fix build warning
	fbdev: sm712fb: avoid unused function warnings
	hwrng: exynos - use __maybe_unused to hide pm functions
	USB: cdc_subset: only build when one driver is enabled
	rtlwifi: fix gcc-6 indentation warning
	staging: wilc1000: fix kbuild test robot error
	x86/platform/olpc: Fix resume handler build warning
	netfilter: ipvs: avoid unused variable warnings
	ipv4: ipconfig: avoid unused ic_proto_used symbol
	tc1100-wmi: fix build warning when CONFIG_PM not enabled
	tlan: avoid unused label with PCI=n
	drm/vmwgfx: use *_32_bits() macros
	tty: cyclades: cyz_interrupt is only used for PCI
	genirq/msi: Add stubs for get_cached_msi_msg/pci_write_msi_msg
	ASoC: mediatek: add i2c dependency
	iio: adc: axp288: remove redundant duplicate const on axp288_adc_channels
	infiniband: cxgb4: use %pR format string for printing resources
	b2c2: flexcop: avoid unused function warnings
	i2c: remove __init from i2c_register_board_info()
	staging: unisys: visorinput depends on INPUT
	tc358743: fix register i2c_rd/wr functions
	drm/nouveau: hide gcc-4.9 -Wmaybe-uninitialized
	Input: tca8418_keypad - hide gcc-4.9 -Wmaybe-uninitialized warning
	KVM: add X86_LOCAL_APIC dependency
	go7007: add MEDIA_CAMERA_SUPPORT dependency
	em28xx: only use mt9v011 if camera support is enabled
	ISDN: eicon: reduce stack size of sig_ind function
	ASoC: rockchip: use __maybe_unused to hide st_irq_syscfg_resume
	serial: 8250_mid: fix broken DMA dependency
	drm/gma500: Sanity-check pipe index
	hdpvr: hide unused variable
	v4l: remove MEDIA_TUNER dependency for VIDEO_TUNER
	cw1200: fix bogus maybe-uninitialized warning
	wireless: cw1200: use __maybe_unused to hide pm functions_
	perf/x86: Shut up false-positive -Wmaybe-uninitialized warning
	dmaengine: zx: fix build warning
	net: hp100: remove unnecessary #ifdefs
	gpio: xgene: mark PM functions as __maybe_unused
	ncpfs: fix unused variable warning
	Revert "power: bq27xxx_battery: Remove unneeded dependency in Kconfig"
	power: bq27xxx_battery: mark some symbols __maybe_unused
	isdn: sc: work around type mismatch warning
	binfmt_elf: compat: avoid unused function warning
	idle: i7300: add PCI dependency
	usb: phy: msm add regulator dependency
	ncr5380: shut up gcc indentation warning
	ARM: tegra: select USB_ULPI from EHCI rather than platform
	ASoC: Intel: Kconfig: fix build when ACPI is not enabled
	netlink: fix nla_put_{u8,u16,u32} for KASAN
	dell-wmi, dell-laptop: depends DMI
	genksyms: Fix segfault with invalid declarations
	x86/microcode/AMD: Change load_microcode_amd()'s param to bool to fix preemptibility bug
	drm/gma500: remove helper function
	kasan: rework Kconfig settings
	KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously
	x86/retpoline: Remove the esp/rsp thunk
	KVM: x86: Make indirect calls in emulator speculation safe
	KVM: VMX: Make indirect call speculation safe
	module/retpoline: Warn about missing retpoline in module
	x86/nospec: Fix header guards names
	x86/bugs: Drop one "mitigation" from dmesg
	x86/cpu/bugs: Make retpoline module warning conditional
	x86/spectre: Check CONFIG_RETPOLINE in command line parser
	Documentation: Document array_index_nospec
	array_index_nospec: Sanitize speculative array de-references
	x86: Implement array_index_mask_nospec
	x86: Introduce barrier_nospec
	x86/get_user: Use pointer masking to limit speculation
	x86/syscall: Sanitize syscall table de-references under speculation
	vfs, fdtable: Prevent bounds-check bypass via speculative execution
	nl80211: Sanitize array index in parse_txq_params
	x86/spectre: Report get_user mitigation for spectre_v1
	x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable"
	x86/paravirt: Remove 'noreplace-paravirt' cmdline option
	x86/kvm: Update spectre-v1 mitigation
	x86/retpoline: Avoid retpolines for built-in __init functions
	x86/spectre: Simplify spectre_v2 command line parsing
	x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
	KVM: nVMX: kmap() can't fail
	KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail
	kvm: nVMX: Fix kernel panics induced by illegal INVEPT/INVVPID types
	KVM: VMX: clean up declaration of VPID/EPT invalidation types
	KVM: nVMX: invvpid handling improvements
	crypto: s5p-sss - Fix kernel Oops in AES-ECB mode
	net: dst_cache_per_cpu_dst_set() can be static
	Linux 4.4.118

Change-Id: I01c76e1c15a611e13a1e98092bc5c01cdb5b6adb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-02-26 09:24:57 +01:00
Nikolay Borisov
6fdf5856c6 btrfs: Fix possible off-by-one in btrfs_search_path_in_tree
[ Upstream commit c8bcbfbd239ed60a6562964b58034ac8a25f4c31 ]

The name char array passed to btrfs_search_path_in_tree is of size
BTRFS_INO_LOOKUP_PATH_MAX (4080). So the actual accessible char indexes
are in the range of [0, 4079]. Currently the code uses the define but this
represents an off-by-one.

Implications:

Size of btrfs_ioctl_ino_lookup_args is 4096, so the new byte will be
written to extra space, not some padding that could be provided by the
allocator.

btrfs-progs store the arguments on stack, but kernel does own copy of
the ioctl buffer and the off-by-one overwrite does not affect userspace,
but the ending 0 might be lost.

Kernel ioctl buffer is allocated dynamically so we're overwriting
somebody else's memory, and the ioctl is privileged if args.objectid is
not 256. Which is in most cases, but resolving a subvolume stored in
another directory will trigger that path.

Before this patch the buffer was one byte larger, but then the -1 was
not added.

Fixes: ac8e9819d7 ("Btrfs: add search and inode lookup ioctls")
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ added implications ]
Signed-off-by: David Sterba <dsterba@suse.com>

Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:03:40 +01:00
Greg Kroah-Hartman
4ec3656576 This is the 4.4.117 stable release
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Merge 4.4.117 into android-4.4

Changes in 4.4.117
	IB/mlx4: Fix incorrectly releasing steerable UD QPs when have only ETH ports
	PM / devfreq: Propagate error from devfreq_add_device()
	s390: fix handling of -1 in set{,fs}[gu]id16 syscalls
	ARM: dts: STi: Add gpio polarity for "hdmi,hpd-gpio" property
	arm: spear600: Add missing interrupt-parent of rtc
	arm: spear13xx: Fix dmas cells
	arm: spear13xx: Fix spics gpio controller's warning
	ALSA: seq: Fix regression by incorrect ioctl_mutex usages
	KVM/x86: Reduce retpoline performance impact in slot_handle_level_range(), by always inlining iterator helper methods
	x86/cpu: Change type of x86_cache_size variable to unsigned int
	drm/radeon: adjust tested variable
	rtc-opal: Fix handling of firmware error codes, prevent busy loops
	ext4: save error to disk in __ext4_grp_locked_error()
	ext4: correct documentation for grpid mount option
	mm: hide a #warning for COMPILE_TEST
	video: fbdev: atmel_lcdfb: fix display-timings lookup
	console/dummy: leave .con_font_get set to NULL
	rtlwifi: rtl8821ae: Fix connection lost problem correctly
	Btrfs: fix deadlock in run_delalloc_nocow
	Btrfs: fix crash due to not cleaning up tree log block's dirty bits
	Btrfs: fix unexpected -EEXIST when creating new inode
	ALSA: hda - Fix headset mic detection problem for two Dell machines
	ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute
	ALSA: hda/realtek: PCI quirk for Fujitsu U7x7
	ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204
	ALSA: seq: Fix racy pool initializations
	mvpp2: fix multicast address filter
	dm: correctly handle chained bios in dec_pending()
	x86: fix build warnign with 32-bit PAE
	vfs: don't do RCU lookup of empty pathnames
	ARM: pxa/tosa-bt: add MODULE_LICENSE tag
	ARM: dts: s5pv210: add interrupt-parent for ohci
	media: r820t: fix r820t_write_reg for KASAN
	Linux 4.4.117

Change-Id: Id192d691d19a99889dc5d36711f18576f48f2981
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-02-22 18:06:57 +01:00