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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>
commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream.
Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer
from an erratum 1024718, which causes incorrect updates when DBM/AP
bits in a page table entry is modified without a break-before-make
sequence. The work around is to skip enabling the hardware DBM feature
on the affected cores. The hardware Access Flag management features
is not affected. There are some other cores suffering from this
errata, which could be added to the midr_list to trigger the work
around.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: ckadabi@codeaurora.org
Reviewed-by: Dave Martin <dave.martin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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>
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Merge 4.4.115 into android-4.4
Changes in 4.4.115
loop: fix concurrent lo_open/lo_release
bpf: fix branch pruning logic
x86: bpf_jit: small optimization in emit_bpf_tail_call()
bpf: fix bpf_tail_call() x64 JIT
bpf: introduce BPF_JIT_ALWAYS_ON config
bpf: arsh is not supported in 32 bit alu thus reject it
bpf: avoid false sharing of map refcount with max_entries
bpf: fix divides by zero
bpf: fix 32-bit divide by zero
bpf: reject stores into ctx via st and xadd
x86/pti: Make unpoison of pgd for trusted boot work for real
kaiser: fix intel_bts perf crashes
ALSA: seq: Make ioctls race-free
crypto: aesni - handle zero length dst buffer
crypto: af_alg - whitelist mask and type
power: reset: zx-reboot: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
gpio: iop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
gpio: ath79: add missing MODULE_DESCRIPTION/LICENSE
mtd: nand: denali_pci: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
igb: Free IRQs when device is hotplugged
KVM: x86: emulator: Return to user-mode on L1 CPL=0 emulation failure
KVM: x86: Don't re-execute instruction when not passing CR2 value
KVM: X86: Fix operand/address-size during instruction decoding
KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race
KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered
KVM: x86: ioapic: Preserve read-only values in the redirection table
ACPI / bus: Leave modalias empty for devices which are not present
cpufreq: Add Loongson machine dependencies
bcache: check return value of register_shrinker
drm/amdgpu: Fix SDMA load/unload sequence on HWS disabled mode
drm/amdkfd: Fix SDMA ring buffer size calculation
drm/amdkfd: Fix SDMA oversubsription handling
openvswitch: fix the incorrect flow action alloc size
mac80211: fix the update of path metric for RANN frame
btrfs: fix deadlock when writing out space cache
KVM: VMX: Fix rflags cache during vCPU reset
xen-netfront: remove warning when unloading module
nfsd: CLOSE SHOULD return the invalid special stateid for NFSv4.x (x>0)
nfsd: Ensure we check stateid validity in the seqid operation checks
grace: replace BUG_ON by WARN_ONCE in exit_net hook
nfsd: check for use of the closed special stateid
lockd: fix "list_add double add" caused by legacy signal interface
hwmon: (pmbus) Use 64bit math for DIRECT format values
net: ethernet: xilinx: Mark XILINX_LL_TEMAC broken on 64-bit
quota: Check for register_shrinker() failure.
SUNRPC: Allow connect to return EHOSTUNREACH
kmemleak: add scheduling point to kmemleak_scan()
drm/omap: Fix error handling path in 'omap_dmm_probe()'
xfs: ubsan fixes
scsi: aacraid: Prevent crash in case of free interrupt during scsi EH path
scsi: ufs: ufshcd: fix potential NULL pointer dereference in ufshcd_config_vreg
media: usbtv: add a new usbid
usb: gadget: don't dereference g until after it has been null checked
staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID
usb: option: Add support for FS040U modem
USB: serial: pl2303: new device id for Chilitag
USB: cdc-acm: Do not log urb submission errors on disconnect
CDC-ACM: apply quirk for card reader
USB: serial: io_edgeport: fix possible sleep-in-atomic
usbip: prevent bind loops on devices attached to vhci_hcd
usbip: list: don't list devices attached to vhci_hcd
USB: serial: simple: add Motorola Tetra driver
usb: f_fs: Prevent gadget unbind if it is already unbound
usb: uas: unconditionally bring back host after reset
selinux: general protection fault in sock_has_perm
serial: imx: Only wakeup via RTSDEN bit if the system has RTS/CTS
spi: imx: do not access registers while clocks disabled
Linux 4.4.115
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
[ upstream commit 290af86629b25ffd1ed6232c4e9107da031705cb ]
The BPF interpreter has been used as part of the spectre 2 attack CVE-2017-5715.
A quote from goolge project zero blog:
"At this point, it would normally be necessary to locate gadgets in
the host kernel code that can be used to actually leak data by reading
from an attacker-controlled location, shifting and masking the result
appropriately and then using the result of that as offset to an
attacker-controlled address for a load. But piecing gadgets together
and figuring out which ones work in a speculation context seems annoying.
So instead, we decided to use the eBPF interpreter, which is built into
the host kernel - while there is no legitimate way to invoke it from inside
a VM, the presence of the code in the host kernel's text section is sufficient
to make it usable for the attack, just like with ordinary ROP gadgets."
To make attacker job harder introduce BPF_JIT_ALWAYS_ON config
option that removes interpreter from the kernel in favor of JIT-only mode.
So far eBPF JIT is supported by:
x64, arm64, arm32, sparc64, s390, powerpc64, mips64
The start of JITed program is randomized and code page is marked as read-only.
In addition "constant blinding" can be turned on with net.core.bpf_jit_harden
v2->v3:
- move __bpf_prog_ret0 under ifdef (Daniel)
v1->v2:
- fix init order, test_bpf and cBPF (Daniel's feedback)
- fix offloaded bpf (Jakub's feedback)
- add 'return 0' dummy in case something can invoke prog->bpf_func
- retarget bpf tree. For bpf-next the patch would need one extra hunk.
It will be sent when the trees are merged back to net-next
Considered doing:
int bpf_jit_enable __read_mostly = BPF_EBPF_JIT_DEFAULT;
but it seems better to land the patch as-is and in bpf-next remove
bpf_jit_enable global variable from all JITs, consolidate in one place
and remove this jit_init() function.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Although CONFIG_UNMAP_KERNEL_AT_EL0 does make KASLR more robust, it's
actually more useful as a mitigation against speculation attacks that
can leak arbitrary kernel data to userspace through speculation.
Reword the Kconfig help message to reflect this, and make the option
depend on EXPERT so that it is on by default for the majority of users.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Add a Kconfig entry to control use of the entry trampoline, which allows
us to unmap the kernel whilst running in userspace and improve the
robustness of KASLR.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
(cherry picked from git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
commit 084eb77cd3a81134d02500977dc0ecc9277dc97d)
Change-Id: Iac41787b660dde902f32325afd2f454da600b60d
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
With the ASID now installed in TTBR1, we can re-enable ARM64_SW_TTBR0_PAN
by ensuring that we switch to a reserved ASID of zero when disabling
user access and restore the active user ASID on the uaccess enable path.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
(cherry picked from git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
commit 27a921e75711d924617269e0ba4adb8bae9fd0d1)
Change-Id: I3b06e02766753c59fac975363a2ead5c5e45b8f3
[ghackmann@google.com: adjust context, applying asm-uaccess.h changes to
uaccess.h]
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
We're about to rework the way ASIDs are allocated, switch_mm is
implemented and low-level kernel entry/exit is handled, so keep the
ARM64_SW_TTBR0_PAN code out of the way whilst we do the heavy lifting.
It will be re-enabled in a subsequent patch.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
(cherry picked from git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
commit 376133b7edc20f237a42e4c72415cc9e8c0a9704)
Change-Id: I38d3f7a66b1d52abcea3e23b1e80277b03c6dbe0
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Adds implementation for arm-smccc and enables CONFIG_HAVE_SMCCC.
Change-Id: Iee20985ae688c68c5f3d6494545718c70057661b
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 14457459f9ca2ff8521686168ea179edc3a56a44)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
This patch moves arm64's struct thread_info from the task stack into
task_struct. This protects thread_info from corruption in the case of
stack overflows, and makes its address harder to determine if stack
addresses are leaked, making a number of attacks more difficult. Precise
detection and handling of overflow is left for subsequent patches.
Largely, this involves changing code to store the task_struct in sp_el0,
and acquire the thread_info from the task struct. Core code now
implements current_thread_info(), and as noted in <linux/sched.h> this
relies on offsetof(task_struct, thread_info) == 0, enforced by core
code.
This change means that the 'tsk' register used in entry.S now points to
a task_struct, rather than a thread_info as it used to. To make this
clear, the TI_* field offsets are renamed to TSK_TI_*, with asm-offsets
appropriately updated to account for the structural change.
Userspace clobbers sp_el0, and we can no longer restore this from the
stack. Instead, the current task is cached in a per-cpu variable that we
can safely access from early assembly as interrupts are disabled (and we
are thus not preemptible).
Both secondary entry and idle are updated to stash the sp and task
pointer separately.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This is a modification of Mark Rutland's original patch. Guards to check
if CONFIG_THREAD_INFO_IN_TASK is used has been inserted. get_current()
for when CONFIG_THREAD_INFO_IN_TASK is not used has been added to
arch/arm64/include/asm/current.h.
Bug: 38331309
Change-Id: Ic5eae344a7c2baea0864f6ae16be1e9c60c0a74a
(cherry picked from commit c02433dd6de32f042cf3ffe476746b1115b8c096)
Signed-off-by: Zubin Mithra <zsm@google.com>
By default appended kernel image is Image.gz-dtb.
New config option BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME
allows to choose between Image.gz-dtb and Image-dtb.
Change-Id: I1c71b85136f1beeb61782e4646820718c1ccd7e4
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This patch adds the Kconfig option to enable support for TTBR0 PAN
emulation. The option is default off because of a slight performance hit
when enabled, caused by the additional TTBR0_EL1 switching during user
access operations or exception entry/exit code.
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 31432001
Change-Id: I2f0b5f332e3c56ea0453ff69826525dec49f034b
(cherry picked from commit ba42822af1c287f038aa550f3578c61c212a892e)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
The RANDOMIZE_MODULE_REGION_FULL Kconfig option allows KASLR to be
configured in such a way that kernel modules and the core kernel are
allocated completely independently, which implies that modules are likely
to require branches via PLT entries to reach the core kernel. The dynamic
ftrace code does not expect that, and assumes that it can patch module
code to perform a relative branch to anywhere in the core kernel. This
may result in errors such as
branch_imm_common: offset out of range
------------[ cut here ]------------
WARNING: CPU: 3 PID: 196 at kernel/trace/ftrace.c:1995 ftrace_bug+0x220/0x2e8
Modules linked in:
CPU: 3 PID: 196 Comm: systemd-udevd Not tainted 4.8.0-22-generic #24
Hardware name: AMD Seattle/Seattle, BIOS 10:34:40 Oct 6 2016
task: ffff8d1bef7dde80 task.stack: ffff8d1bef6b0000
PC is at ftrace_bug+0x220/0x2e8
LR is at ftrace_process_locs+0x330/0x430
So make RANDOMIZE_MODULE_REGION_FULL mutually exclusive with DYNAMIC_FTRACE
at the Kconfig level.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 30369029
(cherry picked from commit 8fe88a4145cdeee486af60e61f5d5a14f804fa45)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: Ifb2474dcbb7a3066fe5724ee53a2048d61e80ccc
This patch adds the Kconfig option to enable support for TTBR0 PAN
emulation. The option is default off because of a slight performance hit
when enabled, caused by the additional TTBR0_EL1 switching during user
access operations or exception entry/exit code.
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Change-Id: Id00a8ad4169d6eb6176c468d953436eb4ae887ae
(cherry picked from commit 6a2d7bad43474c48b68394d455b84a16b7d7dc3f)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
On ThunderX T88 pass 1.x through 2.1 parts, broadcast TLBI
instructions may cause the icache to become corrupted if it contains
data for a non-current ASID.
This patch implements the workaround (which invalidates the local
icache when switching the mm) by using code patching.
Signed-off-by: Andrew Pinski <apinski@cavium.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Change-Id: I60e6d17926b067a4e022d7b159e239114303a547
(cherry picked from commit 104a0c02e8b1936c049e18a6d4e4ab040fb61213)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Selecting CONFIG_RANDOMIZE_BASE=y and CONFIG_MODULES=n fails to build
the module PLTs support:
CC arch/arm64/kernel/module-plts.o
/work/Linux/linux-2.6-aarch64/arch/arm64/kernel/module-plts.c: In function ‘module_emit_plt_entry’:
/work/Linux/linux-2.6-aarch64/arch/arm64/kernel/module-plts.c:32:49: error: dereferencing pointer to incomplete type ‘struct module’
This patch selects ARM64_MODULE_PLTS conditionally only if MODULES is
enabled.
Fixes: f80fb3a3d508 ("arm64: add support for kernel ASLR")
Cc: <stable@vger.kernel.org> # 4.6+
Reported-by: Jeff Vander Stoep <jeffv@google.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit b9c220b589daaf140f5b8ebe502c98745b94e65c)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I446cb3aa78f1c64b5aa1e2e90fda13f7d46cac33
Since arm64 does not use a decompressor that supplies an execution
environment where it is feasible to some extent to provide a source of
randomness, the arm64 KASLR kernel depends on the bootloader to supply
some random bits in the /chosen/kaslr-seed DT property upon kernel entry.
On UEFI systems, we can use the EFI_RNG_PROTOCOL, if supplied, to obtain
some random bits. At the same time, use it to randomize the offset of the
kernel Image in physical memory.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit 2b5fe07a78a09a32002642b8a823428ade611f16)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I9cb7ae5727dfdf3726b1c9544bce74722ec77bbd
This adds support for KASLR is implemented, based on entropy provided by
the bootloader in the /chosen/kaslr-seed DT property. Depending on the size
of the address space (VA_BITS) and the page size, the entropy in the
virtual displacement is up to 13 bits (16k/2 levels) and up to 25 bits (all
4 levels), with the sidenote that displacements that result in the kernel
image straddling a 1GB/32MB/512MB alignment boundary (for 4KB/16KB/64KB
granule kernels, respectively) are not allowed, and will be rounded up to
an acceptable value.
If CONFIG_RANDOMIZE_MODULE_REGION_FULL is enabled, the module region is
randomized independently from the core kernel. This makes it less likely
that the location of core kernel data structures can be determined by an
adversary, but causes all function calls from modules into the core kernel
to be resolved via entries in the module PLTs.
If CONFIG_RANDOMIZE_MODULE_REGION_FULL is not enabled, the module region is
randomized by choosing a page aligned 128 MB region inside the interval
[_etext - 128 MB, _stext + 128 MB). This gives between 10 and 14 bits of
entropy (depending on page size), independently of the kernel randomization,
but still guarantees that modules are within the range of relative branch
and jump instructions (with the caveat that, since the module region is
shared with other uses of the vmalloc area, modules may need to be loaded
further away if the module region is exhausted)
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit f80fb3a3d50843a401dac4b566b3b131da8077a2)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I3f5fafa4e92e5ff39259d57065541366237eb021
This implements CONFIG_RELOCATABLE, which links the final vmlinux
image with a dynamic relocation section, allowing the early boot code
to perform a relocation to a different virtual address at runtime.
This is a prerequisite for KASLR (CONFIG_RANDOMIZE_BASE).
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit 1e48ef7fcc374051730381a2a05da77eb4eafdb0)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: If02e065722d438f85feb62240fc230e16f58e912
This adds support for emitting PLTs at module load time for relative
branches that are out of range. This is a prerequisite for KASLR, which
may place the kernel and the modules anywhere in the vmalloc area,
making it more likely that branch target offsets exceed the maximum
range of +/- 128 MB.
In this version, I removed the distinction between relocations against
.init executable sections and ordinary executable sections. The reason
is that it is hardly worth the trouble, given that .init.text usually
does not contain that many far branches, and this version now only
reserves PLT entry space for jump and call relocations against undefined
symbols (since symbols defined in the same module can be assumed to be
within +/- 128 MB)
For example, the mac80211.ko module (which is fairly sizable at ~400 KB)
built with -mcmodel=large gives the following relocation counts:
relocs branches unique !local
.text 3925 3347 518 219
.init.text 11 8 7 1
.exit.text 4 4 4 1
.text.unlikely 81 67 36 17
('unique' means branches to unique type/symbol/addend combos, of which
!local is the subset referring to undefined symbols)
IOW, we are only emitting a single PLT entry for the .init sections, and
we are better off just adding it to the core PLT section instead.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit fd045f6cd98ec4953147b318418bd45e441e52a3)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I1b46bb817e7d16a1b9a394b100c9e5de46c0837c
This wires up the existing generic huge-vmap feature, which allows
ioremap() to use PMD or PUD sized block mappings. It also adds support
to the unmap path for dealing with block mappings, which will allow us
to unmap the __init region using unmap_kernel_range() in a subsequent
patch.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit 324420bf91f60582bb481133db9547111768ef17)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I4765ae77f7d67c3972b7e5b19d43db434e8b777c
'User Access Override' is a new ARMv8.2 feature which allows the
unprivileged load and store instructions to be overridden to behave in
the normal way.
This patch converts {get,put}_user() and friends to use ldtr*/sttr*
instructions - so that they can only access EL0 memory, then enables
UAO when fs==KERNEL_DS so that these functions can access kernel memory.
This allows user space's read/write permissions to be checked against the
page tables, instead of testing addr<USER_DS, then using the kernel's
read/write permissions.
Signed-off-by: James Morse <james.morse@arm.com>
[catalin.marinas@arm.com: move uao_thread_switch() above dsb()]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit 57f4959bad0a154aeca125b7d38d1d9471a12422)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I1a6a74a1f33b92d54368bd99387b55cf62930903
To enable UBSAN on arm64, ARCH_HAS_UBSAN_SANITIZE_ALL need to be selected.
Basic kernel bootup test is passed on arm64 with CONFIG_UBSAN_SANITIZE_ALL
enabled.
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit f0b7f8a4b44657386273a67179dd901c81cd11a6)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I640f50e70e3562bf1caf2ce164d6ed5640e041f6
ARCH_SUPPORTS_DEBUG_PAGEALLOC provides a hook to map and unmap
pages for debugging purposes. This requires memory be mapped
with PAGE_SIZE mappings since breaking down larger mappings
at runtime will lead to TLB conflicts. Check if debug_pagealloc
is enabled at runtime and if so, map everyting with PAGE_SIZE
pages. Implement the functions to actually map/unmap the
pages at runtime.
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
[catalin.marinas@arm.com: static annotation block_mappings_allowed() and #ifdef]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit 83863f25e4b8214e994ef8b5647aad614d74b45d)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: Ia9b9bc5fcc1938bafbc2930f08d27973cfc3d038
The SBBR and ACPI specifications allow ACPI based systems that do not
implement PSCI (eg systems with no EL3) to boot through the ACPI parking
protocol specification[1].
This patch implements the ACPI parking protocol CPU operations, and adds
code that eases parsing the parking protocol data structures to the
ARM64 SMP initializion carried out at the same time as cpus enumeration.
To wake-up the CPUs from the parked state, this patch implements a
wakeup IPI for ARM64 (ie arch_send_wakeup_ipi_mask()) that mirrors the
ARM one, so that a specific IPI is sent for wake-up purpose in order
to distinguish it from other IPI sources.
Given the current ACPI MADT parsing API, the patch implements a glue
layer that helps passing MADT GICC data structure from SMP initialization
code to the parking protocol implementation somewhat overriding the CPU
operations interfaces. This to avoid creating a completely trasparent
DT/ACPI CPU operations layer that would require creating opaque
structure handling for CPUs data (DT represents CPU through DT nodes, ACPI
through static MADT table entries), which seems overkill given that ACPI
on ARM64 mandates only two booting protocols (PSCI and parking protocol),
so there is no need for further protocol additions.
Based on the original work by Mark Salter <msalter@redhat.com>
[1] https://acpica.org/sites/acpica/files/MP%20Startup%20for%20ARM%20platforms.docx
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Loc Ho <lho@apm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Al Stone <ahs3@redhat.com>
[catalin.marinas@arm.com: Added WARN_ONCE(!acpi_parking_protocol_valid() on the IPI]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug: 30369029
Patchset: kaslr-arm64-4.4
(cherry picked from commit 5e89c55e4ed81d7abb1ce8828db35fa389dc0e90)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: Ie9a872bff124ca6b3551c812df768cc378658bcc
The arm64 MMU supports a Contiguous bit which is a hint that the TTE
is one of a set of contiguous entries which can be cached in a single
TLB entry. Supporting this bit adds new intermediate huge page sizes.
The set of huge page sizes available depends on the base page size.
Without using contiguous pages the huge page sizes are as follows.
4KB: 2MB 1GB
64KB: 512MB
With a 4KB granule, the contiguous bit groups together sets of 16 pages
and with a 64KB granule it groups sets of 32 pages. This enables two new
huge page sizes in each case, so that the full set of available sizes
is as follows.
4KB: 64KB 2MB 32MB 1GB
64KB: 2MB 512MB 16GB
If a 16KB granule is used then the contiguous bit groups 128 pages
at the PTE level and 32 pages at the PMD level.
If the base page size is set to 64KB then 2MB pages are enabled by
default. It is possible in the future to make 2MB the default huge
page size for both 4KB and 64KB granules.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Reviewed-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: David Woods <dwoods@ezchip.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 30369029
Patchset: rework-pagetable
(cherry picked from commit 66b3923a1a0f77a563b43f43f6ad091354abbfe9)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I5e99c5165bc5eb966adf4d4523632fd9eedd9602
arm64 relies on the arm_arch_timer for sched_clock, so we can select
HAVE_IRQ_TIME_ACCOUNTING and have the core sched-clock code enable the
feature at runtime based on the rate.
Reported-by: Mario Smarduch <m.smarduch@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 30369029
(cherry picked from commit 24da208db32ee1e4757ceaba898c47add8e5361e)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I849e010459dbbde0ac0d44d665dadcea9f8bf12d
[ Upstream commit fbf8f40e1658cb2f17452dbd3c708e329c5d27e0 ]
The erratum fixes the hang of ITS SYNC command by avoiding inter node
io and collections/cpu mapping on thunderx dual-socket platform.
This fix is only applicable for Cavium's ThunderX dual-socket platform.
Reviewed-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 104a0c02e8b1936c049e18a6d4e4ab040fb61213 ]
On ThunderX T88 pass 1.x through 2.1 parts, broadcast TLBI
instructions may cause the icache to become corrupted if it contains
data for a non-current ASID.
This patch implements the workaround (which invalidates the local
icache when switching the mm) by using code patching.
Signed-off-by: Andrew Pinski <apinski@cavium.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Enables CONFIG_HARDENED_USERCOPY checks on arm64. As done by KASAN in -next,
renames the low-level functions to __arch_copy_*_user() so a static inline
can do additional work before the copy.
Signed-off-by: Kees Cook <keescook@chromium.org>
Change-Id: I1286cae8e6ffcf12ea54ddd62f1a6d2ce742c8d0
(cherry picked from commit faf5b63e294151d6ac24ca6906d6f221bd3496cd)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(cherry picked from commit https://lkml.org/lkml/2015/12/21/340)
arm64: arch_mmap_rnd() uses STACK_RND_MASK to generate the
random offset for the mmap base address. This value represents a
compromise between increased ASLR effectiveness and avoiding
address-space fragmentation. Replace it with a Kconfig option, which
is sensibly bounded, so that platform developers may choose where to
place this compromise. Keep default values as new minimums.
Bug: 24047224
Signed-off-by: Daniel Cashman <dcashman@android.com>
Signed-off-by: Daniel Cashman <dcashman@google.com>
Change-Id: I0be0bf8b1ed412863f248323e2d86b1df5bf21c6
Copy the config choice for CONFIG_CMDLINE_EXTEND from
arch/arm/Kconfig, including CONFIG_CMDLINE_FROM_BOOTLOADER
as the default. These will be used by drivers/of/fdt.c.
Change-Id: I8416038498ddf8fc1e99ab06109825eb1492aa7f
Signed-off-by: Colin Cross <ccross@android.com>
Allows a defconfig to set a list of dtbs to concatenate with an
Image.gz to create a Image.gz-dtb.
Includes 8adb162 arm64: Fix correct dtb clean-files location
Change-Id: I0b462322d5c970f1fdf37baffece7ad058099f4a
Signed-off-by: Alex Ray <aray@google.com>
Move the poison pointer offset to 0xdead000000000000, a
recognized value that is not mappable by user-space exploits.
Change-Id: I558441a26a7c8390aa087f32c4cbe980de8c8ce3
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
- Build fix when !CONFIG_UID16 (the patch is touching generic files but
it only affects arm64 builds; submitted by Arnd Bergmann)
- EFI fixes to deal with early_memremap() returning NULL and correctly
mapping run-time regions
- Fix CPUID register extraction of unsigned fields (not to be
sign-extended)
- ASID allocator fix to deal with long-running tasks over multiple
generation roll-overs
- Revert support for marking page ranges as contiguous PTEs (it leads to
TLB conflicts and requires additional non-trivial kernel changes)
- Proper early_alloc() failure check
- Disable KASan for 48-bit VA and 16KB page configuration (the pgd is
larger than the KASan shadow memory)
- Update the fault_info table (original descriptions based on early
engineering spec)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Build fix when !CONFIG_UID16 (the patch is touching generic files but
it only affects arm64 builds; submitted by Arnd Bergmann)
- EFI fixes to deal with early_memremap() returning NULL and correctly
mapping run-time regions
- Fix CPUID register extraction of unsigned fields (not to be
sign-extended)
- ASID allocator fix to deal with long-running tasks over multiple
generation roll-overs
- Revert support for marking page ranges as contiguous PTEs (it leads
to TLB conflicts and requires additional non-trivial kernel changes)
- Proper early_alloc() failure check
- Disable KASan for 48-bit VA and 16KB page configuration (the pgd is
larger than the KASan shadow memory)
- Update the fault_info table (original descriptions based on early
engineering spec)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: efi: fix initcall return values
arm64: efi: deal with NULL return value of early_memremap()
arm64: debug: Treat the BRPs/WRPs as unsigned
arm64: cpufeature: Track unsigned fields
arm64: cpufeature: Add helpers for extracting unsigned values
Revert "arm64: Mark kernel page ranges contiguous"
arm64: mm: keep reserved ASIDs in sync with mm after multiple rollovers
arm64: KASAN depends on !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
arm64: efi: correctly map runtime regions
arm64: mm: fix fault_info table xFSC decoding
arm64: fix building without CONFIG_UID16
arm64: early_alloc: Fix check for allocation failure
On KASAN + 16K_PAGES + 48BIT_VA
arch/arm64/mm/kasan_init.c: In function ‘kasan_early_init’:
include/linux/compiler.h:484:38: error: call to ‘__compiletime_assert_95’ declared with attribute error: BUILD_BUG_ON failed: !IS_ALIGNED(KASAN_SHADOW_END, PGDIR_SIZE)
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
Currently KASAN will not work on 16K_PAGES and 48BIT_VA, so
forbid such configuration to avoid above build failure.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reported-by: Suzuki K. Poulose <Suzuki.Poulose@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cortex-A57 parts up to r1p2 can misreport Stage 2 translation faults
when a Stage 1 permission fault or device alignment fault should
have been reported.
This patch implements the workaround (which is to validate that the
Stage-1 translation actually succeeds) by using code patching.
Cc: stable@vger.kernel.org
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
- __cmpxchg_double*() return type fix to avoid truncation of a long to
int and subsequent logical "not" in cmpxchg_double() misinterpreting
the operation success/failure
- BPF fixes for mod and div by zero
- Fix compilation with STRICT_MM_TYPECHECKS enabled
- VDSO build fix without libgcov
- Some static and __maybe_unused annotations
- Kconfig clean-up (FRAME_POINTER)
- defconfig update for CRYPTO_CRC32_ARM64
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes and clean-ups from Catalin Marinas:
"Here's a second pull request for this merging window with some
fixes/clean-ups:
- __cmpxchg_double*() return type fix to avoid truncation of a long
to int and subsequent logical "not" in cmpxchg_double()
misinterpreting the operation success/failure
- BPF fixes for mod and div by zero
- Fix compilation with STRICT_MM_TYPECHECKS enabled
- VDSO build fix without libgcov
- Some static and __maybe_unused annotations
- Kconfig clean-up (FRAME_POINTER)
- defconfig update for CRYPTO_CRC32_ARM64"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: suspend: make hw_breakpoint_restore static
arm64: mmu: make split_pud and fixup_executable static
arm64: smp: make of_parse_and_init_cpus static
arm64: use linux/types.h in kvm.h
arm64: build vdso without libgcov
arm64: mark cpus_have_hwcap as __maybe_unused
arm64: remove redundant FRAME_POINTER kconfig option and force to select it
arm64: fix R/O permissions of FDT mapping
arm64: fix STRICT_MM_TYPECHECKS issue in PTE_CONT manipulation
arm64: bpf: fix mod-by-zero case
arm64: bpf: fix div-by-zero case
arm64: Enable CRYPTO_CRC32_ARM64 in defconfig
arm64: cmpxchg_dbl: fix return value type
FRAME_POINTER is defined in lib/Kconfig.debug, it is unnecessary to redefine it
in arch/arm64/Kconfig.debug.
ARM64 depends on frame pointer to get correct stack trace (also selecting
ARCH_WANT_FRAME_POINTERS). However, the lib/Kconfig.debug definition allows
such option to be disabled. This patch forces FRAME_POINTER always on on arm64.
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This time including:
* A new IOMMU driver for s390 pci devices
* Common dma-ops support based on iommu-api for ARM64. The plan is to
use this as a basis for ARM32 and hopefully other architectures as
well in the future.
* MSI support for ARM-SMMUv3
* Cleanups and dead code removal in the AMD IOMMU driver
* Better RMRR handling for the Intel VT-d driver
* Various other cleanups and small fixes
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Merge tag 'iommu-updates-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
"This time including:
- A new IOMMU driver for s390 pci devices
- Common dma-ops support based on iommu-api for ARM64. The plan is
to use this as a basis for ARM32 and hopefully other architectures
as well in the future.
- MSI support for ARM-SMMUv3
- Cleanups and dead code removal in the AMD IOMMU driver
- Better RMRR handling for the Intel VT-d driver
- Various other cleanups and small fixes"
* tag 'iommu-updates-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (41 commits)
iommu/vt-d: Fix return value check of parse_ioapics_under_ir()
iommu/vt-d: Propagate error-value from ir_parse_ioapic_hpet_scope()
iommu/vt-d: Adjust the return value of the parse_ioapics_under_ir
iommu: Move default domain allocation to iommu_group_get_for_dev()
iommu: Remove is_pci_dev() fall-back from iommu_group_get_for_dev
iommu/arm-smmu: Switch to device_group call-back
iommu/fsl: Convert to device_group call-back
iommu: Add device_group call-back to x86 iommu drivers
iommu: Add generic_device_group() function
iommu: Export and rename iommu_group_get_for_pci_dev()
iommu: Revive device_group iommu-ops call-back
iommu/amd: Remove find_last_devid_on_pci()
iommu/amd: Remove first/last_device handling
iommu/amd: Initialize amd_iommu_last_bdf for DEV_ALL
iommu/amd: Cleanup buffer allocation
iommu/amd: Remove cmd_buf_size and evt_buf_size from struct amd_iommu
iommu/amd: Align DTE flag definitions
iommu/amd: Remove old alias handling code
iommu/amd: Set alias DTE in do_attach/do_detach
iommu/amd: WARN when __[attach|detach]_device are called with irqs enabled
...
- "genirq: Introduce generic irq migration for cpu hotunplugged" patch
merged from tip/irq/for-arm to allow the arm64-specific part to be
upstreamed via the arm64 tree
- CPU feature detection reworked to cope with heterogeneous systems
where CPUs may not have exactly the same features. The features
reported by the kernel via internal data structures or ELF_HWCAP are
delayed until all the CPUs are up (and before user space starts)
- Support for 16KB pages, with the additional bonus of a 36-bit VA
space, though the latter only depending on EXPERT
- Implement native {relaxed, acquire, release} atomics for arm64
- New ASID allocation algorithm which avoids IPI on roll-over, together
with TLB invalidation optimisations (using local vs global where
feasible)
- KASan support for arm64
- EFI_STUB clean-up and isolation for the kernel proper (required by
KASan)
- copy_{to,from,in}_user optimisations (sharing the memcpy template)
- perf: moving arm64 to the arm32/64 shared PMU framework
- L1_CACHE_BYTES increased to 128 to accommodate Cavium hardware
- Support for the contiguous PTE hint on kernel mapping (16 consecutive
entries may be able to use a single TLB entry)
- Generic CONFIG_HZ now used on arm64
- defconfig updates
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- "genirq: Introduce generic irq migration for cpu hotunplugged" patch
merged from tip/irq/for-arm to allow the arm64-specific part to be
upstreamed via the arm64 tree
- CPU feature detection reworked to cope with heterogeneous systems
where CPUs may not have exactly the same features. The features
reported by the kernel via internal data structures or ELF_HWCAP are
delayed until all the CPUs are up (and before user space starts)
- Support for 16KB pages, with the additional bonus of a 36-bit VA
space, though the latter only depending on EXPERT
- Implement native {relaxed, acquire, release} atomics for arm64
- New ASID allocation algorithm which avoids IPI on roll-over, together
with TLB invalidation optimisations (using local vs global where
feasible)
- KASan support for arm64
- EFI_STUB clean-up and isolation for the kernel proper (required by
KASan)
- copy_{to,from,in}_user optimisations (sharing the memcpy template)
- perf: moving arm64 to the arm32/64 shared PMU framework
- L1_CACHE_BYTES increased to 128 to accommodate Cavium hardware
- Support for the contiguous PTE hint on kernel mapping (16 consecutive
entries may be able to use a single TLB entry)
- Generic CONFIG_HZ now used on arm64
- defconfig updates
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (91 commits)
arm64/efi: fix libstub build under CONFIG_MODVERSIONS
ARM64: Enable multi-core scheduler support by default
arm64/efi: move arm64 specific stub C code to libstub
arm64: page-align sections for DEBUG_RODATA
arm64: Fix build with CONFIG_ZONE_DMA=n
arm64: Fix compat register mappings
arm64: Increase the max granular size
arm64: remove bogus TASK_SIZE_64 check
arm64: make Timer Interrupt Frequency selectable
arm64/mm: use PAGE_ALIGNED instead of IS_ALIGNED
arm64: cachetype: fix definitions of ICACHEF_* flags
arm64: cpufeature: declare enable_cpu_capabilities as static
genirq: Make the cpuhotplug migration code less noisy
arm64: Constify hwcap name string arrays
arm64/kvm: Make use of the system wide safe values
arm64/debug: Make use of the system wide safe value
arm64: Move FP/ASIMD hwcap handling to common code
arm64/HWCAP: Use system wide safe values
arm64/capabilities: Make use of system wide safe value
arm64: Delay cpu feature capability checks
...
