commit 70c8217acd4383e069fe1898bbad36ea4fcdbdcc upstream.
If a task uses a non constant string for the format parameter in
trace_printk(), then the trace_printk_fmt variable is set to NULL. This
variable is then saved in the __trace_printk_fmt section.
The function hold_module_trace_bprintk_format() checks to see if duplicate
formats are used by modules, and reuses them if so (saves them to the list
if it is new). But this function calls lookup_format() that does a strcmp()
to the value (which is now NULL) and can cause a kernel oops.
This wasn't an issue till 3debb0a9ddb ("tracing: Fix trace_printk() to print
when not using bprintk()") which added "__used" to the trace_printk_fmt
variable, and before that, the kernel simply optimized it out (no NULL value
was saved).
The fix is simply to handle the NULL pointer in lookup_format() and have the
caller ignore the value if it was NULL.
Link: http://lkml.kernel.org/r/1464769870-18344-1-git-send-email-zhengjun.xing@intel.com
Reported-by: xingzhen <zhengjun.xing@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Fixes: 3debb0a9ddb ("tracing: Fix trace_printk() to print when not using bprintk()")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8974189222159154c55f24ddad33e3613960521a upstream.
As per commit:
b7fa30c9cc48 ("sched/fair: Fix post_init_entity_util_avg() serialization")
> the code generated from update_cfs_rq_load_avg():
>
> if (atomic_long_read(&cfs_rq->removed_load_avg)) {
> s64 r = atomic_long_xchg(&cfs_rq->removed_load_avg, 0);
> sa->load_avg = max_t(long, sa->load_avg - r, 0);
> sa->load_sum = max_t(s64, sa->load_sum - r * LOAD_AVG_MAX, 0);
> removed_load = 1;
> }
>
> turns into:
>
> ffffffff81087064: 49 8b 85 98 00 00 00 mov 0x98(%r13),%rax
> ffffffff8108706b: 48 85 c0 test %rax,%rax
> ffffffff8108706e: 74 40 je ffffffff810870b0 <update_blocked_averages+0xc0>
> ffffffff81087070: 4c 89 f8 mov %r15,%rax
> ffffffff81087073: 49 87 85 98 00 00 00 xchg %rax,0x98(%r13)
> ffffffff8108707a: 49 29 45 70 sub %rax,0x70(%r13)
> ffffffff8108707e: 4c 89 f9 mov %r15,%rcx
> ffffffff81087081: bb 01 00 00 00 mov $0x1,%ebx
> ffffffff81087086: 49 83 7d 70 00 cmpq $0x0,0x70(%r13)
> ffffffff8108708b: 49 0f 49 4d 70 cmovns 0x70(%r13),%rcx
>
> Which you'll note ends up with sa->load_avg -= r in memory at
> ffffffff8108707a.
So I _should_ have looked at other unserialized users of ->load_avg,
but alas. Luckily nikbor reported a similar /0 from task_h_load() which
instantly triggered recollection of this here problem.
Aside from the intermediate value hitting memory and causing problems,
there's another problem: the underflow detection relies on the signed
bit. This reduces the effective width of the variables, IOW its
effectively the same as having these variables be of signed type.
This patch changes to a different means of unsigned underflow
detection to not rely on the signed bit. This allows the variables to
use the 'full' unsigned range. And it does so with explicit LOAD -
STORE to ensure any intermediate value will never be visible in
memory, allowing these unserialized loads.
Note: GCC generates crap code for this, might warrant a look later.
Note2: I say 'full' above, if we end up at U*_MAX we'll still explode;
maybe we should do clamping on add too.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yuyang Du <yuyang.du@intel.com>
Cc: bsegall@google.com
Cc: kernel@kyup.com
Cc: morten.rasmussen@arm.com
Cc: pjt@google.com
Cc: steve.muckle@linaro.org
Fixes: 9d89c257df ("sched/fair: Rewrite runnable load and utilization average tracking")
Link: http://lkml.kernel.org/r/20160617091948.GJ30927@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 4c5ea0a9cd02d6aa8adc86e100b2a4cff8d614ff upstream.
The following scenario is possible:
CPU 1 CPU 2
static_key_slow_inc()
atomic_inc_not_zero()
-> key.enabled == 0, no increment
jump_label_lock()
atomic_inc_return()
-> key.enabled == 1 now
static_key_slow_inc()
atomic_inc_not_zero()
-> key.enabled == 1, inc to 2
return
** static key is wrong!
jump_label_update()
jump_label_unlock()
Testing the static key at the point marked by (**) will follow the
wrong path for jumps that have not been patched yet. This can
actually happen when creating many KVM virtual machines with userspace
LAPIC emulation; just run several copies of the following program:
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/kvm.h>
int main(void)
{
for (;;) {
int kvmfd = open("/dev/kvm", O_RDONLY);
int vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0);
close(ioctl(vmfd, KVM_CREATE_VCPU, 1));
close(vmfd);
close(kvmfd);
}
return 0;
}
Every KVM_CREATE_VCPU ioctl will attempt a static_key_slow_inc() call.
The static key's purpose is to skip NULL pointer checks and indeed one
of the processes eventually dereferences NULL.
As explained in the commit that introduced the bug:
706249c222 ("locking/static_keys: Rework update logic")
jump_label_update() needs key.enabled to be true. The solution adopted
here is to temporarily make key.enabled == -1, and use go down the
slow path when key.enabled <= 0.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 706249c222 ("locking/static_keys: Rework update logic")
Link: http://lkml.kernel.org/r/1466527937-69798-1-git-send-email-pbonzini@redhat.com
[ Small stylistic edits to the changelog and the code. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2c610022711675ee908b903d242f0b90e1db661f upstream.
While this prior commit:
54cf809b9512 ("locking,qspinlock: Fix spin_is_locked() and spin_unlock_wait()")
... fixes spin_is_locked() and spin_unlock_wait() for the usage
in ipc/sem and netfilter, it does not in fact work right for the
usage in task_work and futex.
So while the 2 locks crossed problem:
spin_lock(A) spin_lock(B)
if (!spin_is_locked(B)) spin_unlock_wait(A)
foo() foo();
... works with the smp_mb() injected by both spin_is_locked() and
spin_unlock_wait(), this is not sufficient for:
flag = 1;
smp_mb(); spin_lock()
spin_unlock_wait() if (!flag)
// add to lockless list
// iterate lockless list
... because in this scenario, the store from spin_lock() can be delayed
past the load of flag, uncrossing the variables and loosing the
guarantee.
This patch reworks spin_is_locked() and spin_unlock_wait() to work in
both cases by exploiting the observation that while the lock byte
store can be delayed, the contender must have registered itself
visibly in other state contained in the word.
It also allows for architectures to override both functions, as PPC
and ARM64 have an additional issue for which we currently have no
generic solution.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Giovanni Gherdovich <ggherdovich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <waiman.long@hpe.com>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: 54cf809b9512 ("locking,qspinlock: Fix spin_is_locked() and spin_unlock_wait()")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0422e83d84ae24b933e4b0d4c1e0f0b4ae8a0a3b upstream.
Recursive locking for ww_mutexes was originally conceived as an
exception. However, it is heavily used by the DRM atomic modesetting
code. Currently, the recursive deadlock is checked after we have queued
up for a busy-spin and as we never release the lock, we spin until
kicked, whereupon the deadlock is discovered and reported.
A simple solution for the now common problem is to move the recursive
deadlock discovery to the first action when taking the ww_mutex.
Suggested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1464293297-19777-1-git-send-email-chris@chris-wilson.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Add fwu_go_nogo function in synaptics_fw_update.c
- Add BTN_TOUCH support in synaptics_i2c_rmi4.c
- Add List check in synaptics_i2c_rmi4.c
Change-Id: I8cb776d5b3d20bdee5036cfe0dbcb9bbaa8bf6bd
[amaloche@codeaurora.org: Subject modified from "v1.1"
- Removed reg_access & fw_updater files due to improper license
- Modified commit text to reflect file changes]
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
(cherry picked from commit 6ec6c2cb2b8fce021f48dbfaf326cdd99c9fd9d5)
Signed-off-by: Abinaya P <abinayap@codeaurora.org>
This is the initial commit from thirt party project.
Git-commit: bedea8a0819fc95acd0222e21e61203c8a08bb16
Git-repo: https://github.com/synaptics-touch/synaptics-dsx-i2c/
Change-Id: I892bc03122b096b43fc7f6b757b1161470597ddb
Signed-off-by: Alexandra Chin <alexandra.chin@tw.synaptics.com>
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
(cherry picked from commit 7d4470e29ce77e62acc14a21210e88207e4692b5)
* msm-4.4/tmp-2bf7955:
Linux 4.4.8
Revert "usb: hub: do not clear BOS field during reset device"
usbvision: fix crash on detecting device with invalid configuration
staging: android: ion: Set the length of the DMA sg entries in buffer
Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"
Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed"
Revert "x86/PCI: Don't alloc pcibios-irq when MSI is enabled"
HID: usbhid: fix inconsistent reset/resume/reset-resume behavior
HID: wacom: fix Bamboo ONE oops
ALSA: usb-audio: Skip volume controls triggers hangup on Dell USB Dock
ALSA: usb-audio: Add a quirk for Plantronics BT300
ALSA: usb-audio: Add a sample rate quirk for Phoenix Audio TMX320
ALSA: hda/realtek - Enable the ALC292 dock fixup on the Thinkpad T460s
ALSA: hda - fix front mic problem for a HP desktop
ALSA: hda - Fix headset support and noise on HP EliteBook 755 G2
ALSA: hda - Fixup speaker pass-through control for nid 0x14 on ALC225
mmc: sdhci-pci: Add support and PCI IDs for more Broxton host controllers
perf: Cure event->pending_disable race
perf: Do not double free
arm64: replace read_lock to rcu lock in call_step_hook
Btrfs: fix file/data loss caused by fsync after rename and new inode
iommu: Don't overwrite domain pointer when there is no default_domain
ext4: ignore quota mount options if the quota feature is enabled
ext4: add lockdep annotations for i_data_sem
btrfs: fix crash/invalid memory access on fsync when using overlayfs
nfs: use file_dentry()
fs: add file_dentry()
sd: Fix excessive capacity printing on devices with blocks bigger than 512 bytes
iio: gyro: bmg160: fix endianness when reading axes
iio: gyro: bmg160: fix buffer read values
iio: accel: bmc150: fix endianness when reading axes
iio: st_magn: always define ST_MAGN_TRIGGER_SET_STATE
usb: renesas_usbhs: fix to avoid using a disabled ep in usbhsg_queue_done()
usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
usb: renesas_usbhs: avoid NULL pointer derefernce in usbhsf_pkt_handler()
mac80211: fix txq queue related crashes
mac80211: fix unnecessary frame drops in mesh fwding
mac80211: fix ibss scan parameters
mac80211: avoid excessive stack usage in sta_info
mac80211: properly deal with station hashtable insert errors
virtio: virtio 1.0 cs04 spec compliance for reset
rbd: use GFP_NOIO consistently for request allocations
pcmcia: db1xxx_ss: fix last irq_to_gpio user
v4l: vsp1: Set the SRU CTRL0 register when starting the stream
coda: fix error path in case of missing pdata on non-DT platform
au0828: Fix dev_state handling
au0828: fix au0828_v4l2_close() dev_state race condition
pinctrl: freescale: imx: fix bogus check of of_iomap() return value
pinctrl: nomadik: fix pull debug print inversion
pinctrl: sunxi: Fix A33 external interrupts not working
pinctrl: sh-pfc: only use dummy states for non-DT platforms
pinctrl: pistachio: fix mfio84-89 function description and pinmux.
MIPS: Fix MSA ld unaligned failure cases
KVM: x86: reduce default value of halt_poll_ns parameter
KVM: x86: Inject pending interrupt even if pending nmi exist
cdc-acm: fix NULL pointer reference
USB: uas: Add a new NO_REPORT_LUNS quirk
USB: uas: Limit qdepth at the scsi-host level
mpls: find_outdev: check for err ptr in addition to NULL check
ipv6: Count in extension headers in skb->network_header
ip6_tunnel: set rtnl_link_ops before calling register_netdevice
ipv6: l2tp: fix a potential issue in l2tp_ip6_recv
ipv4: l2tp: fix a potential issue in l2tp_ip_recv
tuntap: restore default qdisc
tun, bpf: fix suspicious RCU usage in tun_{attach, detach}_filter
rtnl: fix msg size calculation in if_nlmsg_size()
bridge: Allow set bridge ageing time when switchdev disabled
ipv6: udp: fix UDP_MIB_IGNOREDMULTI updates
qmi_wwan: add "D-Link DWM-221 B1" device id
xfrm: Fix crash observed during device unregistration and decryption
ppp: take reference on channels netns
ipv4: initialize flowi4_flags before calling fib_lookup()
ipv4: fix broadcast packets reception
bonding: fix bond_get_stats()
net: bcmgenet: fix dma api length mismatch
qlge: Fix receive packets drop.
tcp/dccp: remove obsolete WARN_ON() in icmp handlers
ppp: ensure file->private_data can't be overridden
ath9k: fix buffer overrun for ar9287
farsync: fix off-by-one bug in fst_add_one
mlx4: add missing braces in verify_qp_parameters
net: Fix use after free in the recvmmsg exit path
ipv4: Don't do expensive useless work during inetdev destroy.
bridge: allow zero ageing time
rocker: set FDB cleanup timer according to lowest ageing time
mlxsw: spectrum: Check requested ageing time is valid
macvtap: always pass ethernet header in linear
qlcnic: Fix mailbox completion handling during spurious interrupt
qlcnic: Remove unnecessary usage of atomic_t
sh_eth: advance 'rxdesc' later in sh_eth_ring_format()
sh_eth: fix NULL pointer dereference in sh_eth_ring_format()
bpf: avoid copying junk bytes in bpf_get_current_comm()
packet: validate variable length ll headers
ax25: add link layer header validation function
net: validate variable length ll headers
ppp: release rtnl mutex when interface creation fails
tcp: fix tcpi_segs_in after connection establishment
udp6: fix UDP/IPv6 encap resubmit path
usbnet: cleanup after bind() in probe()
cdc_ncm: toggle altsetting to force reset before setup
vxlan: fix missing options_len update on RX with collect metadata
ipv6: re-enable fragment header matching in ipv6_find_hdr
qmi_wwan: add Sierra Wireless EM74xx device ID
tipc: Revert "tipc: use existing sk_write_queue for outgoing packet chain"
mld, igmp: Fix reserved tailroom calculation
sctp: lack the check for ports in sctp_v6_cmp_addr
net: fix bridge multicast packet checksum validation
net: qca_spi: clear IFF_TX_SKB_SHARING
net: qca_spi: Don't clear IFF_BROADCAST
net: vrf: Remove direct access to skb->data
net: jme: fix suspend/resume on JMC260
ipv4: only create late gso-skb if skb is already set up with CHECKSUM_PARTIAL
tunnel: Clear IPCB(skb)->opt before dst_link_failure called
tcp: convert cached rtt from usec to jiffies when feeding initial rto
xen/events: Mask a moving irq
drm/amdgpu/gmc: use proper register for vram type on Fiji
drm/amdgpu/gmc: move vram type fetching into sw_init
drm/radeon: add a dpm quirk for all R7 370 parts
drm/radeon: add another R7 370 quirk
drm/radeon: add a dpm quirk for sapphire Dual-X R7 370 2G D5
drm/udl: Use unlocked gem unreferencing
drm/dp: move hw_mutex up the call stack
arm64: opcodes.h: Add arm big-endian config options before including arm header
compiler-gcc: disable -ftracer for __noclone functions
libnvdimm, pfn: fix uuid validation
libnvdimm: fix smart data retrieval
powerpc/mm: Fixup preempt underflow with huge pages
mm: fix invalid node in alloc_migrate_target()
ALSA: hda - Apply fix for white noise on Asus N550JV, too
ALSA: hda - Fix white noise on Asus N750JV headphone
ALSA: hda - Asus N750JV external subwoofer fixup
ALSA: timer: Use mod_timer() for rearming the system timer
parisc: Unbreak handling exceptions from kernel modules
parisc: Fix kernel crash with reversed copy_from_user()
parisc: Avoid function pointers for kernel exception routines
PKCS#7: pkcs7_validate_trust(): initialize the _trusted output argument
hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiated
Linux 4.4.7
perf/x86/intel: Fix PEBS data source interpretation on Nehalem/Westmere
perf/x86/intel: Use PAGE_SIZE for PEBS buffer size on Core2
perf/x86/intel: Fix PEBS warning by only restoring active PMU in pmi
perf/x86/pebs: Add workaround for broken OVFL status on HSW+
sched/cputime: Fix steal time accounting vs. CPU hotplug
scsi_common: do not clobber fixed sense information
PM / sleep: Clear pm_suspend_global_flags upon hibernate
intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled
mtd: onenand: fix deadlock in onenand_block_markbad
mm/page_alloc: prevent merging between isolated and other pageblocks
ocfs2/dlm: fix BUG in dlm_move_lockres_to_recovery_list
ocfs2/dlm: fix race between convert and recovery
Input: ati_remote2 - fix crashes on detecting device with invalid descriptor
Input: ims-pcu - sanity check against missing interfaces
Input: synaptics - handle spurious release of trackstick buttons, again
writeback, cgroup: fix use of the wrong bdi_writeback which mismatches the inode
writeback, cgroup: fix premature wb_put() in locked_inode_to_wb_and_lock_list()
ACPI / PM: Runtime resume devices when waking from hibernate
ARM: dts: at91: sama5d4 Xplained: don't disable hsmci regulator
ARM: dts: at91: sama5d3 Xplained: don't disable hsmci regulator
nfsd: fix deadlock secinfo+readdir compound
nfsd4: fix bad bounds checking
iser-target: Rework connection termination
iser-target: Separate flows for np listeners and connections cma events
iser-target: Add new state ISER_CONN_BOUND to isert_conn
iser-target: Fix identification of login rx descriptor type
target: Fix target_release_cmd_kref shutdown comp leak
clk: bcm2835: Fix setting of PLL divider clock rates
clk: rockchip: add hclk_cpubus to the list of rk3188 critical clocks
clk: rockchip: rk3368: fix hdmi_cec gate-register
clk: rockchip: rk3368: fix parents of video encoder/decoder
clk: rockchip: rk3368: fix cpuclk core dividers
clk: rockchip: rk3368: fix cpuclk mux bit of big cpu-cluster
mmc: sdhci: Fix override of timeout clk wrt max_busy_timeout
mmc: sdhci: fix data timeout (part 2)
mmc: sdhci: fix data timeout (part 1)
mmc: mmc_spi: Add Card Detect comments and fix CD GPIO case
mmc: block: fix ABI regression of mmc_blk_ioctl
ideapad-laptop: Add ideapad Y700 (15) to the no_hw_rfkill DMI list
MAINTAINERS: Update mailing list and web page for hwmon subsystem
kbuild/mkspec: fix grub2 installkernel issue
scripts/kconfig: allow building with make 3.80 again
scripts/coccinelle: modernize &
bitops: Do not default to __clear_bit() for __clear_bit_unlock()
tracing: Fix trace_printk() to print when not using bprintk()
tracing: Fix crash from reading trace_pipe with sendfile
tracing: Have preempt(irqs)off trace preempt disabled functions
IB/ipoib: fix for rare multicast join race condition
drm/amdgpu: include the right version of gmc header files for iceland
drm/amdgpu: disable runtime pm on PX laptops without dGPU power control
drm/radeon: Don't drop DP 2.7 Ghz link setup on some cards.
drm/radeon: disable runtime pm on PX laptops without dGPU power control
iwlwifi: mvm: Fix paging memory leak
ipr: Fix regression when loading firmware
ipr: Fix out-of-bounds null overwrite
rapidio/rionet: fix deadlock on SMP
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
fuse: Add reference counting for fuse_io_priv
fuse: do not use iocb after it may have been freed
md: multipath: don't hardcopy bio in .make_request path
md/raid5: preserve STRIPE_PREREAD_ACTIVE in break_stripe_batch_list
raid10: include bio_end_io_list in nr_queued to prevent freeze_array hang
RAID5: revert e9e4c377e2 to fix a livelock
RAID5: check_reshape() shouldn't call mddev_suspend
md/raid5: Compare apples to apples (or sectors to sectors)
raid1: include bio_end_io_list in nr_queued to prevent freeze_array hang
xfs: fix two memory leaks in xfs_attr_list.c error paths
quota: Fix possible GPF due to uninitialised pointers
ARC: bitops: Remove non relevant comments
ARC: [BE] readl()/writel() to work in Big Endian CPU configuration
xtensa: clear all DBREAKC registers on start
xtensa: fix preemption in {clear,copy}_user_highpage
xtensa: ISS: don't hang if stdin EOF is reached
splice: handle zero nr_pages in splice_to_pipe()
vfs: show_vfsstat: do not ignore errors from show_devname method
of: alloc anywhere from memblock if range not specified
net: mvneta: enable change MAC address when interface is up
cgroup: ignore css_sets associated with dead cgroups during migration
Bluetooth: Fix potential buffer overflow with Add Advertising
Bluetooth: Add new AR3012 ID 0489:e095
watchdog: rc32434_wdt: fix ioctl error handling
watchdog: don't run proc_watchdog_update if new value is same as old
ia64: define ioremap_uc()
mm: memcontrol: reclaim and OOM kill when shrinking memory.max below usage
mm: memcontrol: reclaim when shrinking memory.high below usage
bcache: fix cache_set_flush() NULL pointer dereference on OOM
bcache: fix race of writeback thread starting before complete initialization
bcache: cleaned up error handling around register_cache()
IB/srpt: Simplify srpt_handle_tsk_mgmt()
brd: Fix discard request processing
jbd2: fix FS corruption possibility in jbd2_journal_destroy() on umount path
tools/hv: Use include/uapi with __EXPORTED_HEADERS__
ALSA: hda - Fix unconditional GPIO toggle via automute
ALSA: hda - fix the mic mute button and led problem for a Lenovo AIO
ALSA: hda - Don't handle ELD notify from invalid port
ALSA: intel8x0: Add clock quirk entry for AD1981B on IBM ThinkPad X41.
ALSA: pcm: Avoid "BUG:" string for warnings again
ALSA: hda - Apply reboot D3 fix for CX20724 codec, too
mtip32xx: Cleanup queued requests after surprise removal
mtip32xx: Implement timeout handler
mtip32xx: Handle FTL rebuild failure state during device initialization
mtip32xx: Handle safe removal during IO
mtip32xx: Fix for rmmod crash when drive is in FTL rebuild
mtip32xx: Print exact time when an internal command is interrupted
mtip32xx: Remove unwanted code from taskfile error handler
mtip32xx: Fix broken service thread handling
mtip32xx: Avoid issuing standby immediate cmd during FTL rebuild
media: v4l2-compat-ioctl32: fix missing length copy in put_v4l2_buffer32
coda: fix first encoded frame payload
bttv: Width must be a multiple of 16 when capturing planar formats
adv7511: TX_EDID_PRESENT is still 1 after a disconnect
saa7134: Fix bytesperline not being set correctly for planar formats
8250: use callbacks to access UART_DLL/UART_DLM
net: irda: Fix use-after-free in irtty_open()
tty: Fix GPF in flush_to_ldisc(), part 2
staging: comedi: ni_mio_common: fix the ni_write[blw]() functions
staging: android: ion_test: fix check of platform_device_register_simple() error code
staging: comedi: ni_tiocmd: change mistaken use of start_src for start_arg
HID: fix hid_ignore_special_drivers module parameter
HID: multitouch: force retrieving of Win8 signature blob
HID: i2c-hid: fix OOB write in i2c_hid_set_or_send_report()
HID: logitech: fix Dual Action gamepad support
tpm: fix the cleanup of struct tpm_chip
tpm_eventlog.c: fix binary_bios_measurements
tpm_crb: tpm2_shutdown() must be called before tpm_chip_unregister()
tpm: fix the rollback in tpm_chip_register()
mei: bus: check if the device is enabled before data transfer
X.509: Fix leap year handling again
crypto: marvell/cesa - forward devm_ioremap_resource() error code
crypto: ux500 - fix checks of error code returned by devm_ioremap_resource()
crypto: atmel - fix checks of error code returned by devm_ioremap_resource()
crypto: keywrap - memzero the correct memory
crypto: ccp - memset request context to zero during import
crypto: ccp - Don't assume export/import areas are aligned
crypto: ccp - Limit the amount of information exported
crypto: ccp - Add hash state import and export support
Bluetooth: btusb: Add a new AR3012 ID 13d3:3472
Bluetooth: btusb: Add a new AR3012 ID 04ca:3014
Bluetooth: btusb: Add new AR3012 ID 13d3:3395
ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
ALSA: usb-audio: Minor code cleanup in create_fixed_stream_quirk()
ALSA: usb-audio: add Microsoft HD-5001 to quirks
ALSA: usb-audio: Add sanity checks for endpoint accesses
ALSA: usb-audio: Fix NULL dereference in create_fixed_stream_quirk()
Input: powermate - fix oops with malicious USB descriptors
pwc: Add USB id for Philips Spc880nc webcam
USB: option: add "D-Link DWM-221 B1" device id
USB: serial: ftdi_sio: Add support for ICP DAS I-756xU devices
USB: serial: cp210x: Adding GE Healthcare Device ID
USB: cypress_m8: add endpoint sanity check
USB: digi_acceleport: do sanity checking for the number of ports
USB: mct_u232: add sanity checking in probe
USB: usb_driver_claim_interface: add sanity checking
USB: iowarrior: fix oops with malicious USB descriptors
USB: cdc-acm: more sanity checking
USB: uas: Reduce can_queue to MAX_CMNDS
usb: hub: fix a typo in hub_port_init() leading to wrong logic
usb: retry reset if a device times out
dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()
dm cache: make sure every metadata function checks fail_io
dm thin metadata: don't issue prefetches if a transaction abort has failed
dm: fix excessive dm-mq context switching
dm snapshot: disallow the COW and origin devices from being identical
libnvdimm: Fix security issue with DSM IOCTL.
aic7xxx: Fix queue depth handling
be2iscsi: set the boot_kset pointer to NULL in case of failure
scsi: storvsc: fix SRB_STATUS_ABORTED handling
sd: Fix discard granularity when LBPRZ=1
aacraid: Set correct msix count for EEH recovery
aacraid: Fix memory leak in aac_fib_map_free
aacraid: Fix RRQ overload
sg: fix dxferp in from_to case
x86/mm: TLB_REMOTE_SEND_IPI should count pages
x86/iopl: Fix iopl capability check on Xen PV
x86/iopl/64: Properly context-switch IOPL on Xen PV
x86/apic: Fix suspicious RCU usage in smp_trace_call_function_interrupt()
x86/irq: Cure live lock in fixup_irqs()
PCI: ACPI: IA64: fix IO port generic range check
PCI: Disable IO/MEM decoding for devices with non-compliant BARs
pinctrl-bcm2835: Fix cut-and-paste error in "pull" parsing
s390/pci: enforce fmb page boundary rule
s390/cpumf: add missing lpp magic initialization
s390: fix floating pointer register corruption (again)
EDAC, amd64_edac: Shift wrapping issue in f1x_get_norm_dct_addr()
EDAC/sb_edac: Fix computation of channel address
sched/preempt, sh: kmap_coherent relies on disabled preemption
sched/cputime: Fix steal_account_process_tick() to always return jiffies
Thermal: Ignore invalid trip points
perf tools: Fix python extension build
perf tools: Fix checking asprintf return value
perf tools: Dont stop PMU parsing on alias parse error
perf/core: Fix perf_sched_count derailment
KVM: VMX: fix nested vpid for old KVM guests
KVM: VMX: avoid guest hang on invalid invvpid instruction
KVM: VMX: avoid guest hang on invalid invept instruction
KVM: fix spin_lock_init order on x86
KVM: i8254: change PIT discard tick policy
KVM: x86: fix missed hardware breakpoints
x86/PCI: Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs
perf/x86/intel: Add definition for PT PMI bit
x86/entry/compat: Keep TS_COMPAT set during signal delivery
x86/microcode: Untangle from BLK_DEV_INITRD
x86/microcode/intel: Make early loader look for builtin microcode too
mmc: sh_mmcif: Correct TX DMA channel allocation
mmc: sh_mmcif: rework dma channel handling
ASoC: samsung: pass DMA channels as pointers
regulator: core: Fix nested locking of supplies
regulator: core: avoid unused variable warning
s390/cpumf: Fix lpp detection
cpufreq: dt: No need to allocate resources anymore
cpufreq: dt: No need to fetch voltage-tolerance
cpufreq: dt: Use dev_pm_opp_set_rate() to switch frequency
cpufreq: dt: Reuse dev_pm_opp_get_max_transition_latency()
cpufreq: dt: Unsupported OPPs are already disabled
cpufreq: dt: Pass regulator name to the OPP core
cpufreq: dt: OPP layers handles clock-latency for V1 bindings as well
cpufreq: dt: Rename 'need_update' to 'opp_v1'
cpufreq: dt: Convert few pr_debug/err() calls to dev_dbg/err()
cpufreq-dt: fix handling regulator_get_voltage() result
cpufreq-dt: Supply power coefficient when registering cooling devices
PM / OPP: Rename structures for clarity
PM / OPP: Fix incorrect comments
PM / OPP: Initialize regulator pointer to an error value
PM / OPP: Initialize u_volt_min/max to a valid value
PM / OPP: Fix NULL pointer dereference crash when disabling OPPs
PM / OPP: Add dev_pm_opp_set_rate()
PM / OPP: Manage device clk
PM / OPP: Parse clock-latency and voltage-tolerance for v1 bindings
PM / OPP: Introduce dev_pm_opp_get_max_transition_latency()
PM / OPP: Introduce dev_pm_opp_get_max_volt_latency()
PM / OPP: Disable OPPs that aren't supported by the regulator
PM / OPP: get/put regulators from OPP core
cpufreq: cpufreq-dt: avoid uninitialized variable warnings:
PM / OPP: Use snprintf() instead of sprintf()
PM / OPP: Set cpu_dev->id in cpumask first
PM / OPP: Fix parsing of opp-microvolt and opp-microamp properties
PM / OPP: Parse 'opp-<prop>-<name>' bindings
PM / OPP: Parse 'opp-supported-hw' binding
PM / OPP: Add missing doc comments
PM / OPP: Rename OPP nodes as opp@<opp-hz>
PM / OPP: Remove 'operating-points-names' binding
PM / OPP: Add {opp-microvolt|opp-microamp}-<name> binding
PM / OPP: Add "opp-supported-hw" binding
PM / OPP: Add debugfs support
arm64: vdso: Mark vDSO code as read-only
Conflicts:
drivers/staging/android/ion/ion.c
mm/page_alloc.c
CRs-Fixed: 1010239
Change-Id: Id59539cad642885e1e41340cebae4159ba1f7eaf
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
This is the reference driver source code for the msg21xx series.
Signed-off-by: Bruce Ding <bruce.ding@mstarsemi.com>
Signed-off-by: mstar-touch <bruce.ding@mstarsemi.com>
Git-commit: c4cdbf1ae326b8745f5e50f044d23aa8e3d3e131
Git-repo: https://github.com/mstar-touch/msg21xx
Change-Id: Ia9cbfac5dc6e1b74f47bf13dbafaacc2624ee4fd
[maol@codeaurora.org: keep the mstar original code without any
change in this commit]
Signed-off-by: Mao Li <maol@codeaurora.org>
(cherry picked from commit 2ce52642057a25fca6337826533d4fbfddede290)
Signed-off-by: Abinaya P <abinayap@codeaurora.org>
When predictive dcvs is enabled a tracepoint will log a value that is
garbage due to being uninitialized. Fix this.
CRs-fixed: 1042660
Change-Id: I2b94e78f2470dbc2fd469b5cab287d643e8f3227
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
Turning on sched_use_pelt causes a null-pointer dereference in
scheduler. Add correct checking of varable.
CRs-fixed: 1042656
Change-Id: I6e6a57e24b41e4b3d049bfcf694b9ad7e2144dd5
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
* tmp-917a9:
ARM/vdso: Mark the vDSO code read-only after init
x86/vdso: Mark the vDSO code read-only after init
lkdtm: Verify that '__ro_after_init' works correctly
arch: Introduce post-init read-only memory
x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option
mm/init: Add 'rodata=off' boot cmdline parameter to disable read-only kernel mappings
asm-generic: Consolidate mark_rodata_ro()
Linux 4.4.6
ld-version: Fix awk regex compile failure
target: Drop incorrect ABORT_TASK put for completed commands
block: don't optimize for non-cloned bio in bio_get_last_bvec()
MIPS: smp.c: Fix uninitialised temp_foreign_map
MIPS: Fix build error when SMP is used without GIC
ovl: fix getcwd() failure after unsuccessful rmdir
ovl: copy new uid/gid into overlayfs runtime inode
userfaultfd: don't block on the last VM updates at exit time
powerpc/powernv: Fix OPAL_CONSOLE_FLUSH prototype and usages
powerpc/powernv: Add a kmsg_dumper that flushes console output on panic
powerpc: Fix dedotify for binutils >= 2.26
Revert "drm/radeon/pm: adjust display configuration after powerstate"
drm/radeon: Fix error handling in radeon_flip_work_func.
drm/amdgpu: Fix error handling in amdgpu_flip_work_func.
Revert "drm/radeon: call hpd_irq_event on resume"
x86/mm: Fix slow_virt_to_phys() for X86_PAE again
gpu: ipu-v3: Do not bail out on missing optional port nodes
mac80211: Fix Public Action frame RX in AP mode
mac80211: check PN correctly for GCMP-encrypted fragmented MPDUs
mac80211: minstrel_ht: fix a logic error in RTS/CTS handling
mac80211: minstrel_ht: set default tx aggregation timeout to 0
mac80211: fix use of uninitialised values in RX aggregation
mac80211: minstrel: Change expected throughput unit back to Kbps
iwlwifi: mvm: inc pending frames counter also when txing non-sta
can: gs_usb: fixed disconnect bug by removing erroneous use of kfree()
cfg80211/wext: fix message ordering
wext: fix message delay/ordering
ovl: fix working on distributed fs as lower layer
ovl: ignore lower entries when checking purity of non-directory entries
ASoC: wm8958: Fix enum ctl accesses in a wrong type
ASoC: wm8994: Fix enum ctl accesses in a wrong type
ASoC: samsung: Use IRQ safe spin lock calls
ASoC: dapm: Fix ctl value accesses in a wrong type
ncpfs: fix a braino in OOM handling in ncp_fill_cache()
jffs2: reduce the breakage on recovery from halfway failed rename()
dmaengine: at_xdmac: fix residue computation
tracing: Fix check for cpu online when event is disabled
s390/dasd: fix diag 0x250 inline assembly
s390/mm: four page table levels vs. fork
KVM: MMU: fix reserved bit check for ept=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0
KVM: MMU: fix ept=0/pte.u=1/pte.w=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0 combo
KVM: PPC: Book3S HV: Sanitize special-purpose register values on guest exit
KVM: s390: correct fprs on SIGP (STOP AND) STORE STATUS
KVM: VMX: disable PEBS before a guest entry
kvm: cap halt polling at exactly halt_poll_ns
PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr()
ARM: OMAP2+: hwmod: Introduce ti,no-idle dt property
ARM: dts: dra7: do not gate cpsw clock due to errata i877
ARM: mvebu: fix overlap of Crypto SRAM with PCIe memory window
arm64: account for sparsemem section alignment when choosing vmemmap offset
Linux 4.4.5
drm/amdgpu: fix topaz/tonga gmc assignment in 4.4 stable
modules: fix longstanding /proc/kallsyms vs module insertion race.
drm/i915: refine qemu south bridge detection
drm/i915: more virtual south bridge detection
block: get the 1st and last bvec via helpers
block: check virt boundary in bio_will_gap()
drm/amdgpu: Use drm_calloc_large for VM page_tables array
thermal: cpu_cooling: fix out of bounds access in time_in_idle
i2c: brcmstb: allocate correct amount of memory for regmap
ubi: Fix out of bounds write in volume update code
cxl: Fix PSL timebase synchronization detection
MIPS: traps: Fix SIGFPE information leak from `do_ov' and `do_trap_or_bp'
MIPS: scache: Fix scache init with invalid line size.
USB: serial: option: add support for Quectel UC20
USB: serial: option: add support for Telit LE922 PID 0x1045
USB: qcserial: add Sierra Wireless EM74xx device ID
USB: qcserial: add Dell Wireless 5809e Gobi 4G HSPA+ (rev3)
USB: cp210x: Add ID for Parrot NMEA GPS Flight Recorder
usb: chipidea: otg: change workqueue ci_otg as freezable
ALSA: timer: Fix broken compat timer user status ioctl
ALSA: hdspm: Fix zero-division
ALSA: hdsp: Fix wrong boolean ctl value accesses
ALSA: hdspm: Fix wrong boolean ctl value accesses
ALSA: seq: oss: Don't drain at closing a client
ALSA: pcm: Fix ioctls for X32 ABI
ALSA: timer: Fix ioctls for X32 ABI
ALSA: rawmidi: Fix ioctls X32 ABI
ALSA: hda - Fix mic issues on Acer Aspire E1-472
ALSA: ctl: Fix ioctls for X32 ABI
ALSA: usb-audio: Add a quirk for Plantronics DA45
adv7604: fix tx 5v detect regression
dmaengine: pxa_dma: fix cyclic transfers
Fix directory hardlinks from deleted directories
jffs2: Fix page lock / f->sem deadlock
Revert "jffs2: Fix lock acquisition order bug in jffs2_write_begin"
Btrfs: fix loading of orphan roots leading to BUG_ON
pata-rb532-cf: get rid of the irq_to_gpio() call
tracing: Do not have 'comm' filter override event 'comm' field
ata: ahci: don't mark HotPlugCapable Ports as external/removable
PM / sleep / x86: Fix crash on graph trace through x86 suspend
arm64: vmemmap: use virtual projection of linear region
Adding Intel Lewisburg device IDs for SATA
writeback: flush inode cgroup wb switches instead of pinning super_block
block: bio: introduce helpers to get the 1st and last bvec
libata: Align ata_device's id on a cacheline
libata: fix HDIO_GET_32BIT ioctl
drm/amdgpu: return from atombios_dp_get_dpcd only when error
drm/amdgpu/gfx8: specify which engine to wait before vm flush
drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well
drm/amdgpu/pm: update current crtc info after setting the powerstate
drm/radeon/pm: update current crtc info after setting the powerstate
drm/ast: Fix incorrect register check for DRAM width
target: Fix WRITE_SAME/DISCARD conversion to linux 512b sectors
iommu/vt-d: Use BUS_NOTIFY_REMOVED_DEVICE in hotplug path
iommu/amd: Fix boot warning when device 00:00.0 is not iommu covered
iommu/amd: Apply workaround for ATS write permission check
arm/arm64: KVM: Fix ioctl error handling
KVM: x86: fix root cause for missed hardware breakpoints
vfio: fix ioctl error handling
Fix cifs_uniqueid_to_ino_t() function for s390x
CIFS: Fix SMB2+ interim response processing for read requests
cifs: fix out-of-bounds access in lease parsing
fbcon: set a default value to blink interval
kvm: x86: Update tsc multiplier on change.
mips/kvm: fix ioctl error handling
parisc: Fix ptrace syscall number and return value modification
PCI: keystone: Fix MSI code that retrieves struct pcie_port pointer
block: Initialize max_dev_sectors to 0
drm/amdgpu: mask out WC from BO on unsupported arches
btrfs: async-thread: Fix a use-after-free error for trace
btrfs: Fix no_space in write and rm loop
Btrfs: fix deadlock running delayed iputs at transaction commit time
drivers: sh: Restore legacy clock domain on SuperH platforms
use ->d_seq to get coherency between ->d_inode and ->d_flags
Linux 4.4.4
iwlwifi: mvm: don't allow sched scans without matches to be started
iwlwifi: update and fix 7265 series PCI IDs
iwlwifi: pcie: properly configure the debug buffer size for 8000
iwlwifi: dvm: fix WoWLAN
security: let security modules use PTRACE_MODE_* with bitmasks
IB/cma: Fix RDMA port validation for iWarp
x86/irq: Plug vector cleanup race
x86/irq: Call irq_force_move_complete with irq descriptor
x86/irq: Remove outgoing CPU from vector cleanup mask
x86/irq: Remove the cpumask allocation from send_cleanup_vector()
x86/irq: Clear move_in_progress before sending cleanup IPI
x86/irq: Remove offline cpus from vector cleanup
x86/irq: Get rid of code duplication
x86/irq: Copy vectormask instead of an AND operation
x86/irq: Check vector allocation early
x86/irq: Reorganize the search in assign_irq_vector
x86/irq: Reorganize the return path in assign_irq_vector
x86/irq: Do not use apic_chip_data.old_domain as temporary buffer
x86/irq: Validate that irq descriptor is still active
x86/irq: Fix a race in x86_vector_free_irqs()
x86/irq: Call chip->irq_set_affinity in proper context
x86/entry/compat: Add missing CLAC to entry_INT80_32
x86/mpx: Fix off-by-one comparison with nr_registers
hpfs: don't truncate the file when delete fails
do_last(): ELOOP failure exit should be done after leaving RCU mode
should_follow_link(): validate ->d_seq after having decided to follow
xen/pcifront: Fix mysterious crashes when NUMA locality information was extracted.
xen/pciback: Save the number of MSI-X entries to be copied later.
xen/pciback: Check PF instead of VF for PCI_COMMAND_MEMORY
xen/scsiback: correct frontend counting
xen/arm: correctly handle DMA mapping of compound pages
ARM: at91/dt: fix typo in sama5d2 pinmux descriptions
ARM: OMAP2+: Fix onenand initialization to avoid filesystem corruption
do_last(): don't let a bogus return value from ->open() et.al. to confuse us
kernel/resource.c: fix muxed resource handling in __request_region()
sunrpc/cache: fix off-by-one in qword_get()
tracing: Fix showing function event in available_events
powerpc/eeh: Fix partial hotplug criterion
KVM: x86: MMU: fix ubsan index-out-of-range warning
KVM: x86: fix conversion of addresses to linear in 32-bit protected mode
KVM: x86: fix missed hardware breakpoints
KVM: arm/arm64: vgic: Ensure bitmaps are long enough
KVM: async_pf: do not warn on page allocation failures
of/irq: Fix msi-map calculation for nonzero rid-base
NFSv4: Fix a dentry leak on alias use
nfs: fix nfs_size_to_loff_t
block: fix use-after-free in dio_bio_complete
bio: return EINTR if copying to user space got interrupted
i2c: i801: Adding Intel Lewisburg support for iTCO
phy: core: fix wrong err handle for phy_power_on
writeback: keep superblock pinned during cgroup writeback association switches
cgroup: make sure a parent css isn't offlined before its children
cpuset: make mm migration asynchronous
PCI/AER: Flush workqueue on device remove to avoid use-after-free
ARCv2: SMP: Emulate IPI to self using software triggered interrupt
ARCv2: STAR 9000950267: Handle return from intr to Delay Slot #2
libata: fix sff host state machine locking while polling
qla2xxx: Fix stale pointer access.
spi: atmel: fix gpio chip-select in case of non-DT platform
target: Fix race with SCF_SEND_DELAYED_TAS handling
target: Fix remote-port TMR ABORT + se_cmd fabric stop
target: Fix TAS handling for multi-session se_node_acls
target: Fix LUN_RESET active TMR descriptor handling
target: Fix LUN_RESET active I/O handling for ACK_KREF
ALSA: hda - Fixing background noise on Dell Inspiron 3162
ALSA: hda - Apply clock gate workaround to Skylake, too
Revert "workqueue: make sure delayed work run in local cpu"
workqueue: handle NUMA_NO_NODE for unbound pool_workqueue lookup
mac80211: Requeue work after scan complete for all VIF types.
rfkill: fix rfkill_fop_read wait_event usage
tick/nohz: Set the correct expiry when switching to nohz/lowres mode
perf stat: Do not clean event's private stats
cdc-acm:exclude Samsung phone 04e8:685d
Revert "Staging: panel: usleep_range is preferred over udelay"
Staging: speakup: Fix getting port information
sd: Optimal I/O size is in bytes, not sectors
libceph: don't spam dmesg with stray reply warnings
libceph: use the right footer size when skipping a message
libceph: don't bail early from try_read() when skipping a message
libceph: fix ceph_msg_revoke()
seccomp: always propagate NO_NEW_PRIVS on tsync
cpufreq: Fix NULL reference crash while accessing policy->governor_data
cpufreq: pxa2xx: fix pxa_cpufreq_change_voltage prototype
hwmon: (ads1015) Handle negative conversion values correctly
hwmon: (gpio-fan) Remove un-necessary speed_index lookup for thermal hook
hwmon: (dell-smm) Blacklist Dell Studio XPS 8000
Thermal: do thermal zone update after a cooling device registered
Thermal: handle thermal zone device properly during system sleep
Thermal: initialize thermal zone device correctly
IB/mlx5: Expose correct maximum number of CQE capacity
IB/qib: Support creating qps with GFP_NOIO flag
IB/qib: fix mcast detach when qp not attached
IB/cm: Fix a recently introduced deadlock
dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer
dmaengine: at_xdmac: fix resume for cyclic transfers
dmaengine: dw: fix cyclic transfer callbacks
dmaengine: dw: fix cyclic transfer setup
nfit: fix multi-interface dimm handling, acpi6.1 compatibility
ACPI / PCI / hotplug: unlock in error path in acpiphp_enable_slot()
ACPI: Revert "ACPI / video: Add Dell Inspiron 5737 to the blacklist"
ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Satellite R830
ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Portege R700
lib: sw842: select crc32
uapi: update install list after nvme.h rename
ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list
ideapad-laptop: Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list
toshiba_acpi: Fix blank screen at boot if transflective backlight is supported
make sure that freeing shmem fast symlinks is RCU-delayed
drm/radeon/pm: adjust display configuration after powerstate
drm/radeon: Don't hang in radeon_flip_work_func on disabled crtc. (v2)
drm: Fix treatment of drm_vblank_offdelay in drm_vblank_on() (v2)
drm: Fix drm_vblank_pre/post_modeset regression from Linux 4.4
drm: Prevent vblank counter bumps > 1 with active vblank clients. (v2)
drm: No-Op redundant calls to drm_vblank_off() (v2)
drm/radeon: use post-decrement in error handling
drm/qxl: use kmalloc_array to alloc reloc_info in qxl_process_single_command
drm/i915: fix error path in intel_setup_gmbus()
drm/i915/dsi: don't pass arbitrary data to sideband
drm/i915/dsi: defend gpio table against out of bounds access
drm/i915/skl: Don't skip mst encoders in skl_ddi_pll_select()
drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+
drm/i915/dp: fall back to 18 bpp when sink capability is unknown
drm/i915: Make sure DC writes are coherent on flush.
drm/i915: Init power domains early in driver load
drm/i915: intel_hpd_init(): Fix suspend/resume reprobing
drm/i915: Restore inhibiting the load of the default context
drm: fix missing reference counting decrease
drm/radeon: hold reference to fences in radeon_sa_bo_new
drm/radeon: mask out WC from BO on unsupported arches
drm: add helper to check for wc memory support
drm/radeon: fix DP audio support for APU with DCE4.1 display engine
drm/radeon: Add a common function for DFS handling
drm/radeon: cleaned up VCO output settings for DP audio
drm/radeon: properly byte swap vce firmware setup
drm/radeon: clean up fujitsu quirks
drm/radeon: Fix "slow" audio over DP on DCE8+
drm/radeon: call hpd_irq_event on resume
drm/radeon: Fix off-by-one errors in radeon_vm_bo_set_addr
drm/dp/mst: deallocate payload on port destruction
drm/dp/mst: Reverse order of MST enable and clearing VC payload table.
drm/dp/mst: move GUID storage from mgr, port to only mst branch
drm/dp/mst: Calculate MST PBN with 31.32 fixed point
drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
drm/dp/mst: fix in RAD element access
drm/dp/mst: fix in MSTB RAD initialization
drm/dp/mst: always send reply for UP request
drm/dp/mst: process broadcast messages correctly
drm/nouveau: platform: Fix deferred probe
drm/nouveau/disp/dp: ensure sink is powered up before attempting link training
drm/nouveau/display: Enable vblank irqs after display engine is on again.
drm/nouveau/kms: take mode_config mutex in connector hotplug path
drm/amdgpu/pm: adjust display configuration after powerstate
drm/amdgpu: Don't hang in amdgpu_flip_work_func on disabled crtc.
drm/amdgpu: use post-decrement in error handling
drm/amdgpu: fix issue with overlapping userptrs
drm/amdgpu: hold reference to fences in amdgpu_sa_bo_new (v2)
drm/amdgpu: remove unnecessary forward declaration
drm/amdgpu: fix s4 resume
drm/amdgpu: remove exp hardware support from iceland
drm/amdgpu: don't load MEC2 on topaz
drm/amdgpu: drop topaz support from gmc8 module
drm/amdgpu: pull topaz gmc bits into gmc_v7
drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
drm/amdgpu: iceland use CI based MC IP
drm/amdgpu: move gmc7 support out of CIK dependency
drm/amdgpu: no need to load MC firmware on fiji
drm/amdgpu: fix amdgpu_bo_pin_restricted VRAM placing v2
drm/amdgpu: fix tonga smu resume
drm/amdgpu: fix lost sync_to if scheduler is enabled.
drm/amdgpu: call hpd_irq_event on resume
drm/amdgpu: Fix off-by-one errors in amdgpu_vm_bo_map
drm/vmwgfx: respect 'nomodeset'
drm/vmwgfx: Fix a width / pitch mismatch on framebuffer updates
drm/vmwgfx: Fix an incorrect lock check
virtio_pci: fix use after free on release
virtio_balloon: fix race between migration and ballooning
virtio_balloon: fix race by fill and leak
regulator: mt6311: MT6311_REGULATOR needs to select REGMAP_I2C
regulator: axp20x: Fix GPIO LDO enable value for AXP22x
clk: exynos: use irqsave version of spin_lock to avoid deadlock with irqs
cxl: use correct operator when writing pcie config space values
sparc64: fix incorrect sign extension in sys_sparc64_personality
EDAC, mc_sysfs: Fix freeing bus' name
EDAC: Robustify workqueues destruction
MIPS: Fix buffer overflow in syscall_get_arguments()
MIPS: Fix some missing CONFIG_CPU_MIPSR6 #ifdefs
MIPS: hpet: Choose a safe value for the ETIME check
MIPS: Loongson-3: Fix SMP_ASK_C0COUNT IPI handler
Revert "MIPS: Fix PAGE_MASK definition"
cputime: Prevent 32bit overflow in time[val|spec]_to_cputime()
time: Avoid signed overflow in timekeeping_get_ns()
Bluetooth: 6lowpan: Fix handling of uncompressed IPv6 packets
Bluetooth: 6lowpan: Fix kernel NULL pointer dereferences
Bluetooth: Fix incorrect removing of IRKs
Bluetooth: Add support of Toshiba Broadcom based devices
Bluetooth: Use continuous scanning when creating LE connections
Drivers: hv: vmbus: Fix a Host signaling bug
tools: hv: vss: fix the write()'s argument: error -> vss_msg
mmc: sdhci: Allow override of get_cd() called from sdhci_request()
mmc: sdhci: Allow override of mmc host operations
mmc: sdhci-pci: Fix card detect race for Intel BXT/APL
mmc: pxamci: fix again read-only gpio detection polarity
mmc: sdhci-acpi: Fix card detect race for Intel BXT/APL
mmc: mmci: fix an ages old detection error
mmc: core: Enable tuning according to the actual timing
mmc: sdhci: Fix sdhci_runtime_pm_bus_on/off()
mmc: mmc: Fix incorrect use of driver strength switching HS200 and HS400
mmc: sdio: Fix invalid vdd in voltage switch power cycle
mmc: sdhci: Fix DMA descriptor with zero data length
mmc: sdhci-pci: Do not default to 33 Ohm driver strength for Intel SPT
mmc: usdhi6rol0: handle NULL data in timeout
clockevents/tcb_clksrc: Prevent disabling an already disabled clock
posix-clock: Fix return code on the poll method's error path
irqchip/gic-v3-its: Fix double ICC_EOIR write for LPI in EOImode==1
irqchip/atmel-aic: Fix wrong bit operation for IRQ priority
irqchip/mxs: Add missing set_handle_irq()
irqchip/omap-intc: Add support for spurious irq handling
coresight: checking for NULL string in coresight_name_match()
dm: fix dm_rq_target_io leak on faults with .request_fn DM w/ blk-mq paths
dm snapshot: fix hung bios when copy error occurs
dm space map metadata: remove unused variable in brb_pop()
tda1004x: only update the frontend properties if locked
vb2: fix a regression in poll() behavior for output,streams
gspca: ov534/topro: prevent a division by 0
si2157: return -EINVAL if firmware blob is too big
media: dvb-core: Don't force CAN_INVERSION_AUTO in oneshot mode
rc: sunxi-cir: Initialize the spinlock properly
namei: ->d_inode of a pinned dentry is stable only for positives
mei: validate request value in client notify request ioctl
mei: fix fasync return value on error
rtlwifi: rtl8723be: Fix module parameter initialization
rtlwifi: rtl8188ee: Fix module parameter initialization
rtlwifi: rtl8192se: Fix module parameter initialization
rtlwifi: rtl8723ae: Fix initialization of module parameters
rtlwifi: rtl8192de: Fix incorrect module parameter descriptions
rtlwifi: rtl8192ce: Fix handling of module parameters
rtlwifi: rtl8192cu: Add missing parameter setup
rtlwifi: rtl_pci: Fix kernel panic
locks: fix unlock when fcntl_setlk races with a close
um: link with -lpthread
uml: fix hostfs mknod()
uml: flush stdout before forking
s390/fpu: signals vs. floating point control register
s390/compat: correct restore of high gprs on signal return
s390/dasd: fix performance drop
s390/dasd: fix refcount for PAV reassignment
s390/dasd: prevent incorrect length error under z/VM after PAV changes
s390: fix normalization bug in exception table sorting
btrfs: initialize the seq counter in struct btrfs_device
Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots
Btrfs: fix transaction handle leak on failure to create hard link
Btrfs: fix number of transaction units required to create symlink
Btrfs: send, don't BUG_ON() when an empty symlink is found
btrfs: statfs: report zero available if metadata are exhausted
Btrfs: igrab inode in writepage
Btrfs: add missing brelse when superblock checksum fails
KVM: s390: fix memory overwrites when vx is disabled
s390/kvm: remove dependency on struct save_area definition
clocksource/drivers/vt8500: Increase the minimum delta
genirq: Validate action before dereferencing it in handle_irq_event_percpu()
mm: numa: quickly fail allocations for NUMA balancing on full nodes
mm: thp: fix SMP race condition between THP page fault and MADV_DONTNEED
ocfs2: unlock inode if deleting inode from orphan fails
drm/i915: shut up gen8+ SDE irq dmesg noise
iw_cxgb3: Fix incorrectly returning error on success
spi: omap2-mcspi: Prevent duplicate gpio_request
drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER_DONE
USB: option: add "4G LTE usb-modem U901"
USB: option: add support for SIM7100E
USB: cp210x: add IDs for GE B650V3 and B850V3 boards
usb: dwc3: Fix assignment of EP transfer resources
can: ems_usb: Fix possible tx overflow
dm thin: fix race condition when destroying thin pool workqueue
bcache: Change refill_dirty() to always scan entire disk if necessary
bcache: prevent crash on changing writeback_running
bcache: allows use of register in udev to avoid "device_busy" error.
bcache: unregister reboot notifier if bcache fails to unregister device
bcache: fix a leak in bch_cached_dev_run()
bcache: clear BCACHE_DEV_UNLINK_DONE flag when attaching a backing device
bcache: Add a cond_resched() call to gc
bcache: fix a livelock when we cause a huge number of cache misses
lib/ucs2_string: Correct ucs2 -> utf8 conversion
efi: Add pstore variables to the deletion whitelist
efi: Make efivarfs entries immutable by default
efi: Make our variable validation list include the guid
efi: Do variable name validation tests in utf8
efi: Use ucs2_as_utf8 in efivarfs instead of open coding a bad version
lib/ucs2_string: Add ucs2 -> utf8 helper functions
ARM: 8457/1: psci-smp is built only for SMP
drm/gma500: Use correct unref in the gem bo create function
devm_memremap: Fix error value when memremap failed
KVM: s390: fix guest fprs memory leak
arm64: errata: Add -mpc-relative-literal-loads to build flags
ARM: debug-ll: fix BCM63xx entry for multiplatform
ext4: fix bh->b_state corruption
sctp: Fix port hash table size computation
unix_diag: fix incorrect sign extension in unix_lookup_by_ino
tipc: unlock in error path
rtnl: RTM_GETNETCONF: fix wrong return value
IFF_NO_QUEUE: Fix for drivers not calling ether_setup()
tcp/dccp: fix another race at listener dismantle
route: check and remove route cache when we get route
net_sched fix: reclassification needs to consider ether protocol changes
pppoe: fix reference counting in PPPoE proxy
l2tp: Fix error creating L2TP tunnels
net/mlx4_en: Avoid changing dev->features directly in run-time
net/mlx4_en: Choose time-stamping shift value according to HW frequency
net/mlx4_en: Count HW buffer overrun only once
qmi_wwan: add "4G LTE usb-modem U901"
tcp: md5: release request socket instead of listener
tipc: fix premature addition of node to lookup table
af_unix: Guard against other == sk in unix_dgram_sendmsg
af_unix: Don't set err in unix_stream_read_generic unless there was an error
ipv4: fix memory leaks in ip_cmsg_send() callers
bonding: Fix ARP monitor validation
bpf: fix branch offset adjustment on backjumps after patching ctx expansion
flow_dissector: Fix unaligned access in __skb_flow_dissector when used by eth_get_headlen
net: Copy inner L3 and L4 headers as unaligned on GRE TEB
sctp: translate network order to host order when users get a hmacid
enic: increment devcmd2 result ring in case of timeout
tg3: Fix for tg3 transmit queue 0 timed out when too many gso_segs
net:Add sysctl_max_skb_frags
tcp: do not drop syn_recv on all icmp reports
unix: correctly track in-flight fds in sending process user_struct
ipv6: fix a lockdep splat
ipv6: addrconf: Fix recursive spin lock call
ipv6/udp: use sticky pktinfo egress ifindex on connect()
ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail()
tcp: beware of alignments in tcp_get_info()
switchdev: Require RTNL mutex to be held when sending FDB notifications
inet: frag: Always orphan skbs inside ip_defrag()
tipc: fix connection abort during subscription cancel
net: dsa: fix mv88e6xxx switches
sctp: allow setting SCTP_SACK_IMMEDIATELY by the application
pptp: fix illegal memory access caused by multiple bind()s
af_unix: fix struct pid memory leak
tcp: fix NULL deref in tcp_v4_send_ack()
lwt: fix rx checksum setting for lwt devices tunneling over ipv6
tunnels: Allow IPv6 UDP checksums to be correctly controlled.
net: dp83640: Fix tx timestamp overflow handling.
gro: Make GRO aware of lightweight tunnels.
af_iucv: Validate socket address length in iucv_sock_bind()
Conflicts:
arch/arm64/Makefile
arch/arm64/include/asm/cacheflush.h
drivers/mmc/host/sdhci.c
drivers/usb/dwc3/ep0.c
drivers/usb/dwc3/gadget.c
kernel/module.c
sound/core/pcm_compat.c
CRs-Fixed: 1010239
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
Change-Id: I41a28636fc9ad91f9d979b191784609476294cdf
[ Upstream commit ceb56070359b7329b5678b5d95a376fcb24767be ]
Commit dead9f29dd ("perf: Fix race in BPF program unregister") moved
destruction of BPF program from free_event_rcu() callback to __free_event(),
which is problematic if used with tail calls: if prog A is attached as
trace event directly, but at the same time present in a tail call map used
by another trace event program elsewhere, then we need to delay destruction
via RCU grace period since it can still be in use by the program doing the
tail call (the prog first needs to be dropped from the tail call map, then
trace event with prog A attached destroyed, so we get immediate destruction).
Fixes: dead9f29dd ("perf: Fix race in BPF program unregister")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Jann Horn <jann@thejh.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This backports da8b44d5a9f8bf26da637b7336508ca534d6b319 from upstream.
This patchset introduces a /proc/<pid>/timerslack_ns interface which
would allow controlling processes to be able to set the timerslack value
on other processes in order to save power by avoiding wakeups (Something
Android currently does via out-of-tree patches).
The first patch tries to fix the internal timer_slack_ns usage which was
defined as a long, which limits the slack range to ~4 seconds on 32bit
systems. It converts it to a u64, which provides the same basically
unlimited slack (500 years) on both 32bit and 64bit machines.
The second patch introduces the /proc/<pid>/timerslack_ns interface
which allows the full 64bit slack range for a task to be read or set on
both 32bit and 64bit machines.
With these two patches, on a 32bit machine, after setting the slack on
bash to 10 seconds:
$ time sleep 1
real 0m10.747s
user 0m0.001s
sys 0m0.005s
The first patch is a little ugly, since I had to chase the slack delta
arguments through a number of functions converting them to u64s. Let me
know if it makes sense to break that up more or not.
Other than that things are fairly straightforward.
This patch (of 2):
The timer_slack_ns value in the task struct is currently a unsigned
long. This means that on 32bit applications, the maximum slack is just
over 4 seconds. However, on 64bit machines, its much much larger (~500
years).
This disparity could make application development a little (as well as
the default_slack) to a u64. This means both 32bit and 64bit systems
have the same effective internal slack range.
Now the existing ABI via PR_GET_TIMERSLACK and PR_SET_TIMERSLACK specify
the interface as a unsigned long, so we preserve that limitation on
32bit systems, where SET_TIMERSLACK can only set the slack to a unsigned
long value, and GET_TIMERSLACK will return ULONG_MAX if the slack is
actually larger then what can be stored by an unsigned long.
This patch also modifies hrtimer functions which specified the slack
delta as a unsigned long.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Oren Laadan <orenl@cellrox.com>
Cc: Ruchi Kandoi <kandoiruchi@google.com>
Cc: Rom Lemarchand <romlem@android.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In case some sysfs nodes needs to be labeled with a different label than
sysfs then user needs to be notified when a core is brought back online.
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Bug: 29359497
Change-Id: I0395c86e01cd49c348fda8f93087d26f88557c91
commit 29d6455178a09e1dc340380c582b13356227e8df upstream.
Until now, hitting this BUG_ON caused a recursive oops (because oops
handling involves do_exit(), which calls into the scheduler, which in
turn raises an oops), which caused stuff below the stack to be
overwritten until a panic happened (e.g. via an oops in interrupt
context, caused by the overwritten CPU index in the thread_info).
Just panic directly.
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 612bacad78ba6d0a91166fc4487af114bac172a8 ]
Follow-up to commit e27f4a942a0e ("bpf: Use mount_nodev not mount_ns
to mount the bpf filesystem"), which removes the FS_USERNS_MOUNT flag.
The original idea was to have a per mountns instance instead of a
single global fs instance, but that didn't work out and we had to
switch to mount_nodev() model. The intent of that middle ground was
that we avoid users who don't play nice to create endless instances
of bpf fs which are difficult to control and discover from an admin
point of view, but at the same time it would have allowed us to be
more flexible with regard to namespaces.
Therefore, since we now did the switch to mount_nodev() as a fix
where individual instances are created, we also need to remove userns
mount flag along with it to avoid running into mentioned situation.
I don't expect any breakage at this early point in time with removing
the flag and we can revisit this later should the requirement for
this come up with future users. This and commit e27f4a942a0e have
been split to facilitate tracking should any of them run into the
unlikely case of causing a regression.
Fixes: b2197755b2 ("bpf: add support for persistent maps/progs")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit e27f4a942a0ee4b84567a3c6cfa84f273e55cbb7 ]
While reviewing the filesystems that set FS_USERNS_MOUNT I spotted the
bpf filesystem. Looking at the code I saw a broken usage of mount_ns
with current->nsproxy->mnt_ns. As the code does not acquire a
reference to the mount namespace it can not possibly be correct to
store the mount namespace on the superblock as it does.
Replace mount_ns with mount_nodev so that each mount of the bpf
filesystem returns a distinct instance, and the code is not buggy.
In discussion with Hannes Frederic Sowa it was reported that the use
of mount_ns was an attempt to have one bpf instance per mount
namespace, in an attempt to keep resources that pin resources from
hiding. That intent simply does not work, the vfs is not built to
allow that kind of behavior. Which means that the bpf filesystem
really is buggy both semantically and in it's implemenation as it does
not nor can it implement the original intent.
This change is userspace visible, but my experience with similar
filesystems leads me to believe nothing will break with a model of each
mount of the bpf filesystem is distinct from all others.
Fixes: b2197755b2 ("bpf: add support for persistent maps/progs")
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The select_best_cpu() algorithm selects the previous CPU as the target
CPU if the task did not sleep for more than 2 msec (controlled by
/proc/sys/kernel/sched_select_prev_cpu_us). The complete CPU search is
not done for a long time for tasks which sleeps for a short duration
in between the long execution slices. Enforce a 100 msec threshold since
the last selection time to run the complete algorithm.
CRs-Fixed: 984463
Change-Id: I329eecc6bae8f130cd5598f6cee8ca5a01391cca
[joonwoop@codeaurora.org: fixed conflict in bias_to_prev_cpu() and sched.h
where CONFIG_SCHED_QHMP used to be.]
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Since a CPU may go offline after cpu_active_mask is used
to query active CPUs, set_cpus_allowed_ptr might inadverntently
pass an invalid cpu number to move_queued_task.
Fix this by ensuring that the cpumask op that uses cpu_active_mask
checks the return value.
CRs-Fixed: 1029014
Change-Id: Id43a629b40b72cc47773e4027d30953b3a94058d
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
Add a cold_boot parameter which supplements the
boot_reason sysctl entry with information about
whether the system was booted from cold or warm state.
/proc/sys/kernel/cold_boot entry is updated with 1 or 0 when
system was booted from cold or warm boot state respecitively.
CRs-Fixed: 461256
Change-Id: I2bc5d80c8f26eb9e9dbb4b34960d991a51a224e4
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
[abhimany: fixup minor merge conflict and drop changes to
kernel/sysctl.c and Documentation since it was brought in via
snapshot commit]
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
During board initialization read the shared memory item
SMEM_POWER_ON_STATUS_INFO and place it in the procfs at
/proc/sys/kernel/boot_reason
The data item is an integer with a bit being set to identify the reason
the device was powered on. The values of this data item is defined in
the document Document/arm/msm/boot.txt, the following is the data in the
documentation file.
power_on_status values set by the PMIC for power on event:
----------------------------------------------------------
0x01 -- keyboard power on
0x02 -- RTC alarm
0x04 -- cable power on
0x08 -- SMPL
0x10 -- Watch Dog timeout
0x20 -- USB charger
0x40 -- Wall charger
0xFF -- error reading power_on_status value
This is cherrypicked from commit <372d39f87b0da75>
("put reason for boot in procfs") of 3.18 tree.
Change-Id: I59e665f92e6e29f7dfef4380314f676a2d92c94b
Signed-off-by: Rick Adams <rgadams@codeaurora.org>
[abhimany: fix up minor merge conflicts]
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
The max_possible_efficiency and CPU's efficiency are fixed values which
are determined at cluster allocation time. Avoid division on the fast
by using precomputed scale factor.
Also update_cpu_busy_time() doesn't need to know how many full windows
have elapsed. Thus replace unneeded division with simple comparison.
Change-Id: I2be1aad3fb9b895e4f0917d05bd8eade985bbccf
Suggested-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Updating cycle counter should be serialized by holding rq lock.
Add missing rq lock hold when cycle counter is updated by irq entry
point.
Change-Id: I92cf75d047a45ebf15a6ddeeecf8fc3823f96e5d
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Task execution time in nanoseconds and CPU cycle counters are large
enough to cause overflow when we multiply both. Avoid overflow by
calculating frequency separately.
Change-Id: I076d9ecd27cb1c1f11578f009ebe1a19c1619454
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
The function parameter cpu isn't used anymore by cpu_cycles_to_freq().
So remove it.
Change-Id: Ide19321206dacb88fedca97e1b689d740f872866
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Some information, like driver specific configuration, is found
in the perf event structure. As such pass a 'struct perf_event'
to function setup_aux() rather than just the CPU number so that
individual drivers can make the right configuration when setting
up a session.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
It is entirely possible that some PMUs need specific configuration
that is currently not found in the perf options before a session
can be setup.
It is the case for the CoreSight PMU where a sink needs to be
provided. That sink doesn't fall in any of the current perf
options.
As such this patch adds the capability to receive driver
specific configuration using the existing ioctl() mechanism.
Once the configuration has been pushed down the kernel PMU
callbacks are used to deal with the information sent from user
space.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
When kernel.perf_event_open is set to 3 (or greater), disallow all
access to performance events by users without CAP_SYS_ADMIN.
Add a Kconfig symbol CONFIG_SECURITY_PERF_EVENTS_RESTRICT that
makes this value the default.
This is based on a similar feature in grsecurity
(CONFIG_GRKERNSEC_PERF_HARDEN). This version doesn't include making
the variable read-only. It also allows enabling further restriction
at run-time regardless of whether the default is changed.
https://lkml.org/lkml/2016/1/11/587
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Bug: 29054680
Change-Id: Iff5bff4fc1042e85866df9faa01bce8d04335ab8
We have scripts which write to certain fields on 3.18 kernels but
this seems to be failing on 4.4 kernels.
An entry which we write to here is xfrm_aevent_rseqth which is u32.
echo 4294967295 > /proc/sys/net/core/xfrm_aevent_rseqth
Commit 230633d109 ("kernel/sysctl.c:
detect overflows when converting to int") prevented writing to
sysctl entries when integer overflow occurs. However, this does not
apply to unsigned integers.
u32 should be able to hold 4294967295 here, however it fails due to
this check.
static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
if (*lvalp > (unsigned long) INT_MAX)
return -EINVAL;
Fix this for now by reverting this commit till a solution is
finalized upstream.
CRs-Fixed: 1026507
Change-Id: I4fae5f442e4cc2c2414a69e960d42c05c3062415
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
It's possible thermal driver and governor notify that fmax is being
changed at the same time. In such case we can potentially skip updating
of CPU's capacity. Fix this by updating capacity always when limited
fmax is changed by same entity.
Meanwhile serialize sched_update_cpu_freq_min_max() with spinlock since
this function can be called by multiple drivers at the same time.
Change-Id: I3608cb09c30797bf858f434579fd07555546fb60
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Time between mark_start of idle task and IRQ handler entry time is CPU
cycle counter stall period. Therefore it's inappropriate to include such
duration as part of sample period when we do frequency estimation.
Fix such suboptimality by replenishing idle task's CPU cycle counter
upon IRQ entry and using irqtime as time delta.
Change-Id: I274d5047a50565cfaaa2fb821ece21c8cf4c991d
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
CPU cycle counter won't increase when CPU or cluster is idle depending
on hardware. Thus using cycle counter in that period of time can
result in incorrect CPU frequency estimation. Use previously calculated
CPU frequency when CPU was idle.
Change-Id: I732b50c974a73c08038995900e008b4e16e9437b
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Preserve cycle counter in rq in preparation for wait time accounting
while CPU idle fix.
Change-Id: I469263c90e12f39bb36bde5ed26298b7c1c77597
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
commit 759c01142a5d0f364a462346168a56de28a80f52 upstream.
On no-so-small systems, it is possible for a single process to cause an
OOM condition by filling large pipes with data that are never read. A
typical process filling 4000 pipes with 1 MB of data will use 4 GB of
memory. On small systems it may be tricky to set the pipe max size to
prevent this from happening.
This patch makes it possible to enforce a per-user soft limit above
which new pipes will be limited to a single page, effectively limiting
them to 4 kB each, as well as a hard limit above which no new pipes may
be created for this user. This has the effect of protecting the system
against memory abuse without hurting other users, and still allowing
pipes to work correctly though with less data at once.
The limit are controlled by two new sysctls : pipe-user-pages-soft, and
pipe-user-pages-hard. Both may be disabled by setting them to zero. The
default soft limit allows the default number of FDs per process (1024)
to create pipes of the default size (64kB), thus reaching a limit of 64MB
before starting to create only smaller pipes. With 256 processes limited
to 1024 FDs each, this results in 1024*64kB + (256*1024 - 1024) * 4kB =
1084 MB of memory allocated for a user. The hard limit is disabled by
default to avoid breaking existing applications that make intensive use
of pipes (eg: for splicing).
Reported-by: socketpair@gmail.com
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Mitigates: CVE-2013-4312 (Linux 2.0+)
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Moritz Muehlenhoff <moritz@wikimedia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bf959931ddb88c4e4366e96dd22e68fa0db9527c upstream.
The following program (simplified version of generated by syzkaller)
#include <pthread.h>
#include <unistd.h>
#include <sys/ptrace.h>
#include <stdio.h>
#include <signal.h>
void *thread_func(void *arg)
{
ptrace(PTRACE_TRACEME, 0,0,0);
return 0;
}
int main(void)
{
pthread_t thread;
if (fork())
return 0;
while (getppid() != 1)
;
pthread_create(&thread, NULL, thread_func, NULL);
pthread_join(thread, NULL);
return 0;
}
creates an unreapable zombie if /sbin/init doesn't use __WALL.
This is not a kernel bug, at least in a sense that everything works as
expected: debugger should reap a traced sub-thread before it can reap the
leader, but without __WALL/__WCLONE do_wait() ignores sub-threads.
Unfortunately, it seems that /sbin/init in most (all?) distributions
doesn't use it and we have to change the kernel to avoid the problem.
Note also that most init's use sys_waitid() which doesn't allow __WALL, so
the necessary user-space fix is not that trivial.
This patch just adds the "ptrace" check into eligible_child(). To some
degree this matches the "tsk->ptrace" in exit_notify(), ->exit_signal is
mostly ignored when the tracee reports to debugger. Or WSTOPPED, the
tracer doesn't need to set this flag to wait for the stopped tracee.
This obviously means the user-visible change: __WCLONE and __WALL no
longer have any meaning for debugger. And I can only hope that this won't
break something, but at least strace/gdb won't suffer.
We could make a more conservative change. Say, we can take __WCLONE into
account, or !thread_group_leader(). But it would be nice to not
complicate these historical/confusing checks.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Roland McGrath <roland@hack.frob.com>
Cc: <syzkaller@googlegroups.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support to provide an interface that can be used from
userspace to decide whether app specific settings need to
be applied / cleared when particular processes are running.
CRs-Fixed: 981519 997757
Change-Id: Id81f8b70de64f291a8586150f4d2c7c8f8b4420f
Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>
[satyap@codeaurora.org: trivial merge conflict resolution and pull
fixes for CR: 997757]
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
