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Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Changes in 4.4.131: (44 commits)
ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS
ext4: set h_journal if there is a failure starting a reserved handle
ext4: add validity checks for bitmap block numbers
ext4: fix bitmap position validation
usbip: usbip_host: fix to hold parent lock for device_attach() calls
usbip: vhci_hcd: Fix usb device and sockfd leaks
USB: serial: simple: add libtransistor console
USB: serial: ftdi_sio: use jtag quirk for Arrow USB Blaster
USB: serial: cp210x: add ID for NI USB serial console
usb: core: Add quirk for HP v222w 16GB Mini
USB: Increment wakeup count on remote wakeup.
ALSA: usb-audio: Skip broken EU on Dell dock USB-audio
virtio: add ability to iterate over vqs
virtio_console: free buffers after reset
drm/virtio: fix vq wait_event condition
tty: Don't call panic() at tty_ldisc_init()
tty: n_gsm: Fix long delays with control frame timeouts in ADM mode
tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set
tty: Use __GFP_NOFAIL for tty_ldisc_get()
ALSA: opl3: Hardening for potential Spectre v1
ALSA: asihpi: Hardening for potential Spectre v1
ALSA: hdspm: Hardening for potential Spectre v1
ALSA: rme9652: Hardening for potential Spectre v1
ALSA: control: Hardening for potential Spectre v1
ALSA: core: Report audio_tstamp in snd_pcm_sync_ptr
ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device
ALSA: seq: oss: Hardening for potential Spectre v1
ALSA: hda: Hardening for potential Spectre v1
ALSA: hda/realtek - Add some fixes for ALC233
mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.
mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.
mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.
kobject: don't use WARN for registration failures
scsi: sd: Defer spinning up drive while SANITIZE is in progress
ARM: amba: Make driver_override output consistent with other buses
ARM: amba: Fix race condition with driver_override
ARM: amba: Don't read past the end of sysfs "driver_override" buffer
ASoC: fsl_esai: Fix divisor calculation failure at lower ratio
libceph: validate con->state at the top of try_write()
x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
x86/smpboot: Don't use mwait_play_dead() on AMD systems
serial: mctrl_gpio: export mctrl_gpio_disable_ms and mctrl_gpio_init
serial: mctrl_gpio: Add missing module license
Linux 4.4.131
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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commit 3e14c6abbfb5c94506edda9d8e2c145d79375798 upstream.
This WARNING proved to be noisy. The function still returns an error
and callers should handle it. That's how most of kernel code works.
Downgrade the WARNING to pr_err() and leave WARNINGs for kernel bugs.
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: syzbot+209c0f67f99fec8eb14b@syzkaller.appspotmail.com
Reported-by: syzbot+7fb6d9525a4528104e05@syzkaller.appspotmail.com
Reported-by: syzbot+2e63711063e2d8f9ea27@syzkaller.appspotmail.com
Reported-by: syzbot+de73361ee4971b6e6f75@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* caf-updates:
msm: kgsl: Update global memory base to 0XFC000000 for 64bit kernel
msm: kgsl: Move global memory region to 0x100000000
mm-camera2:isp2: Avoid use after free buffer
diag: Handle data ready notification properly
diag: Fix possible usage of freed resource issue
diag: mhi: Remove unnecessary sanity check
diag: Protect mask updates for memory device session
diag: Add proper checks to fix possible out-of-bound issue
diag: dci: Add NULL pointer checks for dci buffers
diag: Fix to check for command length size
diag: Update the read buffers status properly
msm: isp: Clear irq status if irq is set again with same value
msm: isp: Add pingpong status to tasklet command
diag: Protect the decrement of number of diag clients
ASoC: msm: qdsp6v2: check for buffer size before read
ASoC: wcd934x-dsp-cntl: Limit array size of val
msm: mdss: Fix scalar LUT handling
diag: Validate copying length against source buffer length
msm: kgsl: Fix reading lm_sequence in _execute_reg_sequence()
* kasan-clang:
BACKPORT: arm64: kasan: avoid pfn_to_nid() before page array is initialized
FROMLIST: kasan: add no_sanitize attribute for clang builds
UPSTREAM: kasan: add functions for unpoisoning stack variables
UPSTREAM: kasan: add tests for alloca poisoning
UPSTREAM: kasan: support alloca() poisoning
UPSTREAM: kasan: support use-after-scope detection
UPSTREAM: kasan/tests: add tests for user memory access functions
UPSTREAM: mm, kasan: add a ksize() test
UPSTREAM: kasan/Makefile: support LLVM style asan parameters
Revert "ANDROID: kasan, LLVMLinux: add clang-specific CFLAGS_KASAN"
UPSTREAM: kasan: add compiler support for clang
UPSTREAM: include/linux/compiler-clang.h: handle randomizable anonymous structs
BACKPORT: kasan: don't emit builtin calls when sanitization is off
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Link: http://lkml.kernel.org/r/20171204191735.132544-5-paullawrence@google.com
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 00a14294bb33af533f7ac002fb20623fdd8ea0d7)
BUG=chromium:781317
TEST=see CL:998508
Change-Id: Ib4a5d1a59391464ee717d4205b98d727eb31448c
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/998507
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Gcc revision 241896 implements use-after-scope detection. Will be
available in gcc 7. Support it in KASAN.
Gcc emits 2 new callbacks to poison/unpoison large stack objects when
they go in/out of scope. Implement the callbacks and add a test.
[dvyukov@google.com: v3]
Link: http://lkml.kernel.org/r/1479998292-144502-1-git-send-email-dvyukov@google.com
Link: http://lkml.kernel.org/r/1479226045-145148-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org> [4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 828347f8f9a558cf1af2faa46387a26564f2ac3e)
BUG=chromium:781317
TEST=see CL:998508
Change-Id: I349f54df6fc1b8f2db7efebaaf7946776dc761df
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/998505
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Add some tests for the newly-added user memory access API.
Link: http://lkml.kernel.org/r/1462538722-1574-1-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit eae08dcab80c695c16c9f1f7dcd5b8ed52bfc88b)
BUG=chromium:781317
TEST=see CL:998508
Change-Id: I8f76e5807a5900de99a56460372ee7fb1d1db6ef
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/998504
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Add a test that makes sure ksize() unpoisons the whole chunk.
Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrey Konovalov <adech.fo@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Konstantin Serebryany <kcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 96fe805fb6fe9b2ed12fc54ad0e3e6829a4152cb)
BUG=chromium:781317
TEST=see CL:998508
Change-Id: Ic58bdd7f3dc46ae27ebaa04899c121674aca7e95
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/998503
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Changes in 4.4.129: (98 commits)
media: v4l2-compat-ioctl32: don't oops on overlay
parisc: Fix out of array access in match_pci_device()
perf intel-pt: Fix overlap detection to identify consecutive buffers correctly
perf intel-pt: Fix sync_switch
perf intel-pt: Fix error recovery from missing TIP packet
perf intel-pt: Fix timestamp following overflow
radeon: hide pointless #warning when compile testing
Revert "perf tests: Decompress kernel module before objdump"
block/loop: fix deadlock after loop_set_status
s390/qdio: don't retry EQBS after CCQ 96
s390/qdio: don't merge ERROR output buffers
s390/ipl: ensure loadparm valid flag is set
getname_kernel() needs to make sure that ->name != ->iname in long case
rtl8187: Fix NULL pointer dereference in priv->conf_mutex
hwmon: (ina2xx) Fix access to uninitialized mutex
cdc_ether: flag the Cinterion AHS8 modem by gemalto as WWAN
slip: Check if rstate is initialized before uncompressing
lan78xx: Correctly indicate invalid OTP
x86/hweight: Get rid of the special calling convention
x86/hweight: Don't clobber %rdi
tty: make n_tty_read() always abort if hangup is in progress
ubifs: Check ubifs_wbuf_sync() return code
ubi: fastmap: Don't flush fastmap work on detach
ubi: Fix error for write access
ubi: Reject MLC NAND
fs/reiserfs/journal.c: add missing resierfs_warning() arg
resource: fix integer overflow at reallocation
ipc/shm: fix use-after-free of shm file via remap_file_pages()
mm, slab: reschedule cache_reap() on the same CPU
usb: musb: gadget: misplaced out of bounds check
ARM: dts: at91: at91sam9g25: fix mux-mask pinctrl property
ARM: dts: at91: sama5d4: fix pinctrl compatible string
xen-netfront: Fix hang on device removal
regmap: Fix reversed bounds check in regmap_raw_write()
ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E
ACPI / hotplug / PCI: Check presence of slot itself in get_slot_status()
USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw
usb: dwc3: pci: Properly cleanup resource
HID: i2c-hid: fix size check and type usage
powerpc/powernv: Handle unknown OPAL errors in opal_nvram_write()
powerpc/64: Fix smp_wmb barrier definition use use lwsync consistently
powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops
powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops
HID: Fix hid_report_len usage
HID: core: Fix size as type u32
ASoC: ssm2602: Replace reg_default_raw with reg_default
thunderbolt: Resume control channel after hibernation image is created
random: use a tighter cap in credit_entropy_bits_safe()
jbd2: if the journal is aborted then don't allow update of the log tail
ext4: don't update checksum of new initialized bitmaps
ext4: fail ext4_iget for root directory if unallocated
RDMA/ucma: Don't allow setting RDMA_OPTION_IB_PATH without an RDMA device
ALSA: pcm: Fix UAF at PCM release via PCM timer access
IB/srp: Fix srp_abort()
IB/srp: Fix completion vector assignment algorithm
dmaengine: at_xdmac: fix rare residue corruption
um: Use POSIX ucontext_t instead of struct ucontext
iommu/vt-d: Fix a potential memory leak
mmc: jz4740: Fix race condition in IRQ mask update
clk: mvebu: armada-38x: add support for 1866MHz variants
clk: mvebu: armada-38x: add support for missing clocks
clk: bcm2835: De-assert/assert PLL reset signal when appropriate
thermal: imx: Fix race condition in imx_thermal_probe()
watchdog: f71808e_wdt: Fix WD_EN register read
ALSA: oss: consolidate kmalloc/memset 0 call to kzalloc
ALSA: pcm: Use ERESTARTSYS instead of EINTR in OSS emulation
ALSA: pcm: Avoid potential races between OSS ioctls and read/write
ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams
ALSA: pcm: Fix mutex unbalance in OSS emulation ioctls
ALSA: pcm: Fix endless loop for XRUN recovery in OSS emulation
vfio-pci: Virtualize PCIe & AF FLR
vfio/pci: Virtualize Maximum Payload Size
vfio/pci: Virtualize Maximum Read Request Size
ext4: don't allow r/w mounts if metadata blocks overlap the superblock
drm/radeon: Fix PCIe lane width calculation
ext4: fix crashes in dioread_nolock mode
ext4: fix deadlock between inline_data and ext4_expand_extra_isize_ea()
ALSA: line6: Use correct endpoint type for midi output
ALSA: rawmidi: Fix missing input substream checks in compat ioctls
ALSA: hda - New VIA controller suppor no-snoop path
HID: hidraw: Fix crash on HIDIOCGFEATURE with a destroyed device
MIPS: uaccess: Add micromips clobbers to bzero invocation
MIPS: memset.S: EVA & fault support for small_memset
MIPS: memset.S: Fix return of __clear_user from Lpartial_fixup
MIPS: memset.S: Fix clobber of v1 in last_fixup
powerpc/eeh: Fix enabling bridge MMIO windows
powerpc/lib: Fix off-by-one in alternate feature patching
jffs2_kill_sb(): deal with failed allocations
hypfs_kill_super(): deal with failed allocations
rpc_pipefs: fix double-dput()
Don't leak MNT_INTERNAL away from internal mounts
autofs: mount point create should honour passed in mode
mm: allow GFP_{FS,IO} for page_cache_read page cache allocation
mm/filemap.c: fix NULL pointer in page_cache_tree_insert()
ext4: bugfix for mmaped pages in mpage_release_unused_pages()
fanotify: fix logic of events on child
writeback: safer lock nesting
Linux 4.4.129
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
arch/x86/lib/Makefile
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commit f5967101e9de12addcda4510dfbac66d7c5779c3 upstream.
People complained about ARCH_HWEIGHT_CFLAGS and how it throws a wrench
into kcov, lto, etc, experimentations.
Add asm versions for __sw_hweight{32,64}() and do explicit saving and
restoring of clobbered registers. This gets rid of the special calling
convention. We get to call those functions on !X86_FEATURE_POPCNT CPUs.
We still need to hardcode POPCNT and register operands as some old gas
versions which we support, do not know about POPCNT.
Btw, remove redundant REX prefix from 32-bit POPCNT because alternatives
can do padding now.
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1464605787-20603-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.125: (44 commits)
MIPS: ralink: Remove ralink_halt()
iio: st_pressure: st_accel: pass correct platform data to init
ALSA: usb-audio: Fix parsing descriptor of UAC2 processing unit
ALSA: aloop: Sync stale timer before release
ALSA: aloop: Fix access to not-yet-ready substream via cable
ALSA: hda/realtek - Always immediately update mute LED with pin VREF
mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L
ahci: Add PCI-id for the Highpoint Rocketraid 644L card
clk: bcm2835: Protect sections updating shared registers
Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174
libata: fix length validation of ATAPI-relayed SCSI commands
libata: remove WARN() for DMA or PIO command without data
libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
libata: disable LPM for Crucial BX100 SSD 500GB drive
libata: Enable queued TRIM for Samsung SSD 860
libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
libata: Make Crucial BX100 500GB LPM quirk apply to all firmware versions
libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version
mm/vmalloc: add interfaces to free unmapped page table
x86/mm: implement free pmd/pte page interfaces
drm/vmwgfx: Fix a destoy-while-held mutex problem.
drm/radeon: Don't turn off DP sink when disconnected
drm: udl: Properly check framebuffer mmap offsets
acpi, numa: fix pxm to online numa node associations
brcmfmac: fix P2P_DEVICE ethernet address generation
rtlwifi: rtl8723be: Fix loss of signal
tracing: probeevent: Fix to support minus offset from symbol
mtd: nand: fsl_ifc: Fix nand waitfunc return value
staging: ncpfs: memory corruption in ncp_read_kernel()
can: cc770: Fix stalls on rt-linux, remove redundant IRQ ack
can: cc770: Fix queue stall & dropped RTR reply
can: cc770: Fix use after free in cc770_tx_interrupt()
tty: vt: fix up tabstops properly
kvm/x86: fix icebp instruction handling
x86/build/64: Force the linker to use 2MB page size
x86/boot/64: Verify alignment of the LOAD segment
x86/entry/64: Don't use IST entry for #BP stack
perf/x86/intel: Don't accidentally clear high bits in bdw_limit_period()
staging: lustre: ptlrpc: kfree used instead of kvfree
kbuild: disable clang's default use of -fmerge-all-constants
bpf: skip unnecessary capability check
bpf, x64: increase number of passes
Linux 4.4.125
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
arch/arm64/mm/mmu.c
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Changes in 4.4.120: (35 commits)
hrtimer: Ensure POSIX compliance (relative CLOCK_REALTIME hrtimers)
f2fs: fix a bug caused by NULL extent tree
mtd: nand: gpmi: Fix failure when a erased page has a bitflip at BBM
ipv6: icmp6: Allow icmp messages to be looped back
ARM: 8731/1: Fix csum_partial_copy_from_user() stack mismatch
sget(): handle failures of register_shrinker()
drm/nouveau/pci: do a msi rearm on init
spi: atmel: fixed spin_lock usage inside atmel_spi_remove
net: arc_emac: fix arc_emac_rx() error paths
scsi: storvsc: Fix scsi_cmd error assignments in storvsc_handle_error
ARM: dts: ls1021a: fix incorrect clock references
lib/mpi: Fix umul_ppmm() for MIPS64r6
tg3: Add workaround to restrict 5762 MRRS to 2048
tg3: Enable PHY reset in MTU change path for 5720
bnx2x: Improve reliability in case of nested PCI errors
led: core: Fix brightness setting when setting delay_off=0
s390/dasd: fix wrongly assigned configuration data
IB/mlx4: Fix mlx4_ib_alloc_mr error flow
IB/ipoib: Fix race condition in neigh creation
xfs: quota: fix missed destroy of qi_tree_lock
xfs: quota: check result of register_shrinker()
e1000: fix disabling already-disabled warning
drm/ttm: check the return value of kzalloc
mac80211: mesh: drop frames appearing to be from us
can: flex_can: Correct the checking for frame length in flexcan_start_xmit()
bnxt_en: Fix the 'Invalid VF' id check in bnxt_vf_ndo_prep routine.
xen-netfront: enable device after manual module load
mdio-sun4i: Fix a memory leak
SolutionEngine771x: fix Ether platform data
xen/gntdev: Fix off-by-one error when unmapping with holes
xen/gntdev: Fix partial gntdev_mmap() cleanup
sctp: make use of pre-calculated len
net: gianfar_ptp: move set_fipers() to spinlock protecting area
MIPS: Implement __multi3 for GCC7 MIPS64r6 builds
Linux 4.4.120
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Changes in 4.4.118: (193 commits)
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
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
net/Kconfig
net/core/Makefile
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Changes in 4.4.115: (68 commits)
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: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/usb/gadget/function/f_fs.c
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Changes in 4.4.106: (106 commits)
can: ti_hecc: Fix napi poll return value for repoll
can: kvaser_usb: free buf in error paths
can: kvaser_usb: Fix comparison bug in kvaser_usb_read_bulk_callback()
can: kvaser_usb: ratelimit errors if incomplete messages are received
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
can: ems_usb: cancel urb on -EPIPE and -EPROTO
can: esd_usb2: cancel urb on -EPIPE and -EPROTO
can: usb_8dev: cancel urb on -EPIPE and -EPROTO
virtio: release virtio index when fail to device_register
hv: kvp: Avoid reading past allocated blocks from KVP file
isa: Prevent NULL dereference in isa_bus driver callbacks
scsi: libsas: align sata_device's rps_resp on a cacheline
efi: Move some sysfs files to be read-only by root
ASN.1: fix out-of-bounds read when parsing indefinite length item
ASN.1: check for error from ASN1_OP_END__ACT actions
X.509: reject invalid BIT STRING for subjectPublicKey
x86/PCI: Make broadcom_postcore_init() check acpi_disabled
ALSA: pcm: prevent UAF in snd_pcm_info
ALSA: seq: Remove spurious WARN_ON() at timer check
ALSA: usb-audio: Fix out-of-bound error
ALSA: usb-audio: Add check return value for usb_string()
iommu/vt-d: Fix scatterlist offset handling
s390: fix compat system call table
kdb: Fix handling of kallsyms_symbol_next() return value
drm: extra printk() wrapper macros
drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
media: dvb: i2c transfers over usb cannot be done from stack
arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one
KVM: VMX: remove I/O port 0x80 bypass on Intel hosts
arm64: fpsimd: Prevent registers leaking from dead tasks
ARM: BUG if jumping to usermode address in kernel mode
ARM: avoid faulting on qemu
scsi: storvsc: Workaround for virtual DVD SCSI version
thp: reduce indentation level in change_huge_pmd()
thp: fix MADV_DONTNEED vs. numa balancing race
mm: drop unused pmdp_huge_get_and_clear_notify()
Revert "drm/armada: Fix compile fail"
Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"
Revert "s390/kbuild: enable modversions for symbols exported from asm"
vti6: Don't report path MTU below IPV6_MIN_MTU.
ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure
x86/hpet: Prevent might sleep splat on resume
selftest/powerpc: Fix false failures for skipped tests
module: set __jump_table alignment to 8
ARM: OMAP2+: Fix device node reference counts
ARM: OMAP2+: Release device node after it is no longer needed.
gpio: altera: Use handle_level_irq when configured as a level_high
HID: chicony: Add support for another ASUS Zen AiO keyboard
usb: gadget: configs: plug memory leak
USB: gadgetfs: Fix a potential memory leak in 'dev_config()'
kvm: nVMX: VMCLEAR should not cause the vCPU to shut down
libata: drop WARN from protocol error in ata_sff_qc_issue()
workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq
scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters
irqchip/crossbar: Fix incorrect type of register size
KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset
arm: KVM: Survive unknown traps from guests
arm64: KVM: Survive unknown traps from guests
spi_ks8995: fix "BUG: key accdaa28 not in .data!"
bnx2x: prevent crash when accessing PTP with interface down
bnx2x: fix possible overrun of VFPF multicast addresses array
bnx2x: do not rollback VF MAC/VLAN filters we did not configure
ipv6: reorder icmpv6_init() and ip6_mr_init()
crypto: s5p-sss - Fix completing crypto request in IRQ handler
i2c: riic: fix restart condition
zram: set physical queue limits to avoid array out of bounds accesses
netfilter: don't track fragmented packets
axonram: Fix gendisk handling
drm/amd/amdgpu: fix console deadlock if late init failed
powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested
EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro
EDAC, i5000, i5400: Fix definition of NRECMEMB register
kbuild: pkg: use --transform option to prefix paths in tar
mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl()
route: also update fnhe_genid when updating a route cache
route: update fnhe_expires for redirect when the fnhe exists
lib/genalloc.c: make the avail variable an atomic_long_t
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
NFS: Fix a typo in nfs_rename()
sunrpc: Fix rpc_task_begin trace point
block: wake up all tasks blocked in get_request()
sparc64/mm: set fields in deferred pages
sctp: do not free asoc when it is already dead in sctp_sendmsg
sctp: use the right sk after waking up from wait_buf sleep
atm: horizon: Fix irq release error
jump_label: Invoke jump_label_test() via early_initcall()
xfrm: Copy policy family in clone_policy
IB/mlx4: Increase maximal message size under UD QP
IB/mlx5: Assign send CQ and recv CQ of UMR QP
afs: Connect up the CB.ProbeUuid
ipvlan: fix ipv6 outbound device
audit: ensure that 'audit=1' actually enables audit for PID 1
ipmi: Stop timers before cleaning up the module
s390: always save and restore all registers on context switch
more bio_map_user_iov() leak fixes
tipc: fix memory leak in tipc_accept_from_sock()
rds: Fix NULL pointer dereference in __rds_rdma_map
sit: update frag_off info
packet: fix crash in fanout_demux_rollover()
net/packet: fix a race in packet_bind() and packet_notifier()
Revert "x86/efi: Build our own page table structures"
Revert "x86/efi: Hoist page table switching code into efi_call_virt()"
Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers"
arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one
usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping
Linux 4.4.106
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
arch/arm/include/asm/kvm_arm.h
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Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/gpu/drm/msm/msm_gem_submit.c
drivers/media/v4l2-core/v4l2-compat-ioctl32.c
drivers/mmc/core/bus.c
drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
drivers/scsi/ufs/ufshcd.h
kernel/power/process.c
net/wireless/nl80211.c
sound/usb/card.c
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Changes in 4.4.125: (44 commits)
MIPS: ralink: Remove ralink_halt()
iio: st_pressure: st_accel: pass correct platform data to init
ALSA: usb-audio: Fix parsing descriptor of UAC2 processing unit
ALSA: aloop: Sync stale timer before release
ALSA: aloop: Fix access to not-yet-ready substream via cable
ALSA: hda/realtek - Always immediately update mute LED with pin VREF
mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L
ahci: Add PCI-id for the Highpoint Rocketraid 644L card
clk: bcm2835: Protect sections updating shared registers
Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174
libata: fix length validation of ATAPI-relayed SCSI commands
libata: remove WARN() for DMA or PIO command without data
libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
libata: disable LPM for Crucial BX100 SSD 500GB drive
libata: Enable queued TRIM for Samsung SSD 860
libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
libata: Make Crucial BX100 500GB LPM quirk apply to all firmware versions
libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version
mm/vmalloc: add interfaces to free unmapped page table
x86/mm: implement free pmd/pte page interfaces
drm/vmwgfx: Fix a destoy-while-held mutex problem.
drm/radeon: Don't turn off DP sink when disconnected
drm: udl: Properly check framebuffer mmap offsets
acpi, numa: fix pxm to online numa node associations
brcmfmac: fix P2P_DEVICE ethernet address generation
rtlwifi: rtl8723be: Fix loss of signal
tracing: probeevent: Fix to support minus offset from symbol
mtd: nand: fsl_ifc: Fix nand waitfunc return value
staging: ncpfs: memory corruption in ncp_read_kernel()
can: cc770: Fix stalls on rt-linux, remove redundant IRQ ack
can: cc770: Fix queue stall & dropped RTR reply
can: cc770: Fix use after free in cc770_tx_interrupt()
tty: vt: fix up tabstops properly
kvm/x86: fix icebp instruction handling
x86/build/64: Force the linker to use 2MB page size
x86/boot/64: Verify alignment of the LOAD segment
x86/entry/64: Don't use IST entry for #BP stack
perf/x86/intel: Don't accidentally clear high bits in bdw_limit_period()
staging: lustre: ptlrpc: kfree used instead of kvfree
kbuild: disable clang's default use of -fmerge-all-constants
bpf: skip unnecessary capability check
bpf, x64: increase number of passes
Linux 4.4.125
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
arch/arm64/mm/mmu.c
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commit b6bdb7517c3d3f41f20e5c2948d6bc3f8897394e upstream.
On architectures with CONFIG_HAVE_ARCH_HUGE_VMAP set, ioremap() may
create pud/pmd mappings. A kernel panic was observed on arm64 systems
with Cortex-A75 in the following steps as described by Hanjun Guo.
1. ioremap a 4K size, valid page table will build,
2. iounmap it, pte0 will set to 0;
3. ioremap the same address with 2M size, pgd/pmd is unchanged,
then set the a new value for pmd;
4. pte0 is leaked;
5. CPU may meet exception because the old pmd is still in TLB,
which will lead to kernel panic.
This panic is not reproducible on x86. INVLPG, called from iounmap,
purges all levels of entries associated with purged address on x86. x86
still has memory leak.
The patch changes the ioremap path to free unmapped page table(s) since
doing so in the unmap path has the following issues:
- The iounmap() path is shared with vunmap(). Since vmap() only
supports pte mappings, making vunmap() to free a pte page is an
overhead for regular vmap users as they do not need a pte page freed
up.
- Checking if all entries in a pte page are cleared in the unmap path
is racy, and serializing this check is expensive.
- The unmap path calls free_vmap_area_noflush() to do lazy TLB purges.
Clearing a pud/pmd entry before the lazy TLB purges needs extra TLB
purge.
Add two interfaces, pud_free_pmd_page() and pmd_free_pte_page(), which
clear a given pud/pmd entry and free up a page for the lower level
entries.
This patch implements their stub functions on x86 and arm64, which work
as workaround.
[akpm@linux-foundation.org: fix typo in pmd_free_pte_page() stub]
Link: http://lkml.kernel.org/r/20180314180155.19492-2-toshi.kani@hpe.com
Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings")
Reported-by: Lei Li <lious.lilei@hisilicon.com>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Wang Xuefeng <wxf.wang@hisilicon.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[ tweak arm64 portion to rely on CONFIG_ARCH_HAVE_HUGE_VMAP - gregkh]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Android p-preview-1 Release 0.2
* tag 'android-p-preview-1_r0.2':
ANDROID: usb: gadget: f_accessory: Fix double-free
qcacld-3.0: WLAN upgrade to 5.1.1.44V.4
qcacld-3.0: Enhance logging levels for some SAP ACS messages
qcacld-3.0: Do 11ac override only if channel list has 5Ghz channel(s)
qcacld-3.0: Assign acs_cfg->end_ch before use
qcacld-3.0: Avoid selection of irrelevant channel in 80/160MHz config
qcacld-3.0: Set ACS weight to max for channels not in scan list
qcacld-3.0: Fix an ACS hw mode mapping discrepancy
ANDROID: usb: gadget: f_accessory: Increase buffer size and max burst
Revert "arm64: dts: taimen: To avoid AOD flickering, changed AOD in/out init.code"
arm64: dts: taimen: To avoid AOD flickering, changed AOD in/out init.code
msm: wlan: Remove channel 14 from Japan
ANDROID: cpufreq: change uid_cpupower to use u32
qcacld-3.0: Support NDP Confirm with channel info and Schedule Update
UPSTREAM: ext4: don't allow encrypted operations without keys
UPSTREAM: typec: tcpm: Only request matching pdos
UPSTREAM: typec: tcpm: Validate source and sink caps
ANDROID: sdcardfs: Protect set_top
ANDROID: fsnotify: Notify lower fs of open
Revert "ANDROID: sdcardfs: notify lower file of opens"
ANDROID: sdcardfs: Use lower getattr times/size
qcacld-3.0: WLAN upgrade to 5.1.1.44V.3
qcacld-3.0: Validate CSA WBW IE before processing channel switch
Revert "arm64/configs: wahoo: remove CONFIG_IPC_LOGGING"
nl80211: Add the missing nl80211 enums
Revert "scsi: ufs: Change power mode on line reset"
Revert "Revert "scsi: ufs: disable auto hibern8""
KEYS: prevent KEYCTL_READ on negative key
hrtimer: Reset hrtimer cpu base proper on CPU hotplug
qcacld-3.0: WLAN upgrade to 5.1.1.44V.2
qcacld-3.0: Avoid panic during HDD resume failure if FW is down
qcacld-3.0: WLAN upgrade to 5.1.1.44V.1
qcacld-3.0: Send per chain rssi to upper layer
qcacld-3.0: Modify dwell time and DBS scan based on scan request
qcacmn: Send per chain rssi to upper layer
qcacld-3.0: Add support for HW mode info vendor command
nl80211: Introduce scan flags to emphasize requested scan behavior
cfg80211: Scan results to also report the per chain signal strength
qcacld-3.0: WLAN upgrade to 5.1.1.44V
msm: wlan: Remove DSRC channels from US reg-domain
icnss: Update icnss platform driver
USB: fix buffer overflows with parsing CDC headers
scsi/ufs: use 16 queue depth for Samsung UFS part
BACKPORT: USB: core: harden cdc_parse_cdc_header
ANDROID: clock_gettime(CLOCK_BOOTTIME,) slows down >20x
qcacld-3.0: Update host driver version to 5.1.1.41W.1
Revert "scsi: ufs: disable auto hibern8"
qcacld-3.0: Trim the ACS scan channel list as per acs config
ANDROID: xattr: Pass EOPNOTSUPP to permission2
STOPSHIP: ANDROID: cpufreq: concurrent_*_time P/H experiment
ANDROID: cpufreq: Remove seq_printf from critical path
ANDROID: sdcardfs: Move default_normal to superblock
qcacld-3.0: Check the channel width value in CSA processing
arm64: dts: htc: usb-xa: Lower USB-C temp and hysteresis thresholds
arm64: dts: lge: Lower USB-C temp and hysteresis thresholds
wlan_mac: Change from icnss to cnss_utils api
cnss_utils: Zero out cnss_utils priv structure during initialization
cnss_utils: Add support for derived MAC address
cnss_utils: Add support of cnss_utils for WLAN
arm64: dts: taimen: lower FG empty and cutoff voltages
arm64: dts: taimen: set vbat-too-low-threshold to 2.8V
power: qcom: bcl_peripheral: allow setting vbat-too-low from DT
msm: bus_arb: disable debug logging
arm64/configs: wahoo: remove CONFIG_IPC_LOGGING
input: touchscreen: stm: enable touch after unblank
Add VTI support to Wahoo Kernel
arm64: dts: taimen: set fg-empty-voltage to 3.2V
arm64: dts: walleye: set fg-empty-voltage to 3.2V
power: lge-battery: remove debugging FG log message
qcacld-3.0: WLAN upgrade to 5.1.1.41W
wireless: wlan: Remove DSRC channels from ETSI countries
soc: qcom: ssr: Remove ramdump enabled limitation for crash_reason
STOPSHIP: ANDROID: vdso: add disable switch for experiments
ANDROID: wahoo: turn on VDSO
ANDROID: arm64: vdso32: fix CC=clang build
ANDROID: wahoo: add CROSS_COMPILE_ARM32 to build configs
ANDROID: CROSS_COMPILE_ARM32 must work if CONFIG_COMPAT_VDSO
FROMLIST: BACKPORT: [PATCH 6/6] arm64: Wire up and expose the new compat vDSO
FROMLIST: BACKPORT: [PATCH 5/6] arm64: compat: 32-bit vDSO setup
FROMLIST: [PATCH 4/6] arm64: compat: Add a 32-bit vDSO
FROMLIST: [PATCH 3/6] arm64: Refactor vDSO init/setup
FROMLIST: [PATCH 2/6] arm64: elf: Set AT_SYSINFO_EHDR in compat processes
FROMLIST: [PATCH 1/6] arm64: compat: Use vDSO sigreturn trampolines if available
FROMLIST: lib: vdso: add support for time
FROMLIST: [PATCH] arm64: compat: Expose offset to registers in sigframes
FROMLIST: [PATCH v5 12/12] lib: vdso: do not expose gettimeofday, if no arch supported timer
FROMLIST: [PATCH v5 11/12] lib: vdso: Add support for CLOCK_BOOTTIME
FROMLIST: [PATCH v5 10/12] arm64: vdso: replace gettimeofday.S with global vgettimeofday.C
FROMLIST: [PATCH v5 09/12] arm: vdso: move vgettimeofday.c to lib/vdso/
FROMLIST: [PATCH v5 08/12] arm: vdso: Add ARCH_CLOCK_FIXED_MASK
FROMLIST: [PATCH v5 07/12] arm: vdso: disable profiling
FROMLIST: [PATCH v5 06/12] arm: vdso: add support for clock_getres
FROMLIST: [PATCH v6 05/12] arm: vdso: Add support for CLOCK_MONOTONIC_RAW
FROMLIST: [PATCH v5 04/12] arm: vdso: do calculations outside reader loops
FROMLIST: [PATCH v5 03/12] arm: vdso: inline assembler operations to compiler.h
FROMLIST: [PATCH v5 02/12] arm: vdso: add include file defining __get_datapage()
FROMLIST: [PATCH v5 01/12] arm: vdso: rename vdso_datapage variables
FROMLIST: [PATCH v2 3/3] arm64: compat: Add CONFIG_KUSER_HELPERS
FROMLIST: [PATCH v2 2/3] arm64: compat: Split the sigreturn trampolines and kuser helpers (assembler sources)
FROMLIST: [PATCH v2 1/3] arm64: compat: Split the sigreturn trampolines and kuser helpers (C sources)
msm: ipc_logging: fix missing header
ANDROID: sdcardfs: Fix missing break on default_normal
mm: skip swap readahead when process is exiting
ANDROID: sdcardfs: Add default_normal option
ANDROID: sdcardfs: notify lower file of opens
UPSTREAM: net: xfrm: allow clearing socket xfrm policies.
qcacld-3.0: wlan driver upgrade to 5.1.1.38X
diag: Add timer to make sure wakelock no stuck
misc: mnh: fix pcie suspend sequence for power down from suspend
misc: mnh: prevent double ready irq disables
ANDROID: cpufreq: update conditions for recording cputime
BACKPORT: arm64: Use __pa_symbol for empty_zero_page
BACKPORT: arm64: Use __pa_symbol for kernel symbols
UPSTREAM: mm: Introduce lm_alias
BACKPORT: time: Clean up CLOCK_MONOTONIC_RAW time handling
BACKPORT: time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting
UPSTREAM: arm64: compat: Remove leftover variable declaration
UPSTREAM: arm64: vdso: constify vm_special_mapping used for aarch32 vectors page
UPSTREAM: arm64: vdso: add __init section marker to alloc_vectors_page
UPSTREAM: ARM: 8597/1: VDSO: put RO and RO after init objects into proper sections
UPSTREAM: arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO
UPSTREAM: arm64: Refactor vDSO time functions
UPSTREAM: arm64: fix vdso-offsets.h dependency
UPSTREAM: kbuild: drop FORCE from PHONY targets
UPSTREAM: mm: add PHYS_PFN, use it in __phys_to_pfn()
UPSTREAM: ARM: 8476/1: VDSO: use PTR_ERR_OR_ZERO for vma check
Revert "soc: qcom: pil: Dump whole subsystem region"
misc: mnh: Free firmware buf on download failure
Revert "arm64: dts: taimen: add delay after sleep out and post panel on cmd"
ANDROID: cpufreq: uid_concurrent_policy_time
ANDROID: cpufreq: uid_concurrent_active_time
ANDROID: cpufreq: concurrent_policy_time by pid
ANDROID: cpufreq: concurrent_active_time by pid
PM: wakeup_reasons: Fix formatting for printk
ufs: show ufs part info in error case
msm: mdss: ensure mdp transfer before post panel on commands
spmi-pmic-arb: add support to dispatch interrupt based on IRQ status
input: ftm4: sync only between repeated touch events
msm: kgsl: Stop slab shrinker when no more pages can be reclaimed
UPSTREAM: arm64: vdso: fix clock_getres for 4GiB-aligned res
build.config.clang.lto: fix LD_LIBRARY_PATH
soc: qcom: pil: Dump whole subsystem region
easelcomm: Avoid retries when sending wrap marker
FROMLIST: arm64: Avoid aligning normal memory pointers in __memcpy_{to,from}io
misc: easelcomm: Convert service spinlock to mutex
msm: mdss: enable err_detect irq after post panel on
misc: easelcomm: Fix signed and unsigned comparison
drv2624: use regmap_write_bit() for updating bits for volatile registers
genirq: Add generic action name for chained IRQs
input: touchscreen: stm: add decoding for additional events
clk: msm: clock-gpu-8998: Remove 180MHz perf level for gfx3d clock
arm64: configs: wahoo: enable MNH_PCIE_MULTIPLE_MSI
misc: mnh: pcie: fix compile error for multiple msi config
pci: msm: add support for multiple msi interrupts
ANDROID: Revert "arm64: move ELF_ET_DYN_BASE to 4GB / 4MB"
sched: rate-limit sched_timing printk
usb: gadget: f_fs: Fix sleeping while atomic in ffs_epfile_io
power: Adjust learned capacity max decrement to 0.5%
arm64: dtbo: muskie: Remove muskie dtbo from build
ANDROID: cpufreq: Add time_in_state to /proc/uid directories
ANDROID: proc: Add /proc/uid directory
input: misc: Fixed LDAF PerformRefSpadManagement
soc: qcom: glink: Add downvote of transport during SSR
input: touchscreen: stm: faster touch i2c reads
ANDROID: binder: show high watermark of alloc->pages.
ANDROID: binder: Add thread->process_todo flag.
qpnp-fg-gen3: Move getting battery id and profile to profile_load_work
input: ftm4: reflash firmware when config or cx is corrupt
diag: Flush control workqueue immediately on channel close
BACKPORT: xfrm: Clear sk_dst_cache when applying per-socket policy.
msm: vidc: Fix issue with regulator node reordering
staging: bcm15602: add vsel sysfs for all bcm15602 rails
misc: mnh: use dynamic memory allocation for ddr structure
misc: mnh: update clock driver
staging: bcm15602: modify voltage levels
qcacld-3.0: Check vdev status before sending vdev up
qcacld-3.0: Set vdev_up flag to false for all missing cases
qcacld-3.0: Release 5.1.3.01L
binder: Dump out refs_by_desc rbtree on failure
FROMLIST: android: binder: Fix null ptr dereference in debug msg
FROMLIST: android: binder: Change binder_shrinker to static
ANDROID: binder: fix node sched policy calculation
ANDROID: binder: init desired_prio.sched_policy before use it
ANDROID: binder: fix transaction leak.
ANDROID: binder: Add tracing for binder priority inheritance.
FROMLIST: binder: fix use-after-free in binder_transaction()
FROMLIST: android: binder: Don't get mm from task
FROMLIST: android: binder: Remove unused vma argument
FROMLIST: android: binder: Drop lru lock in isolate callback
BACKPORT: partial: mm, oom_reaper: do not mmput synchronously from the oom reaper context
FROMLIST: binder: fix an ret value override
FROMLIST: binder: fix memory corruption in binder_transaction binder
FROMLIST: android: binder: Add page usage in binder stats
FROMLIST: android: binder: Add shrinker tracepoints
FROMLIST: android: binder: Add global lru shrinker to binder
FROMLIST: android: binder: Move buffer out of area shared with user space
FROMLIST: android: binder: Add allocator selftest
FROMLIST: android: binder: Refactor prev and next buffer into a helper function
ANDROID: binder: don't queue async transactions to thread.
ANDROID: binder: don't enqueue death notifications to thread todo.
ANDROID: binder: call poll_wait() unconditionally.
ANDROID: binder: Don't BUG_ON(!spin_is_locked()).
ANDROID: binder: don't check prio permissions on restore.
Add BINDER_GET_NODE_DEBUG_INFO ioctl
ANDROID: binder: add RT inheritance flag to node.
ANDROID: binder: improve priority inheritance.
ANDROID: binder: add min sched_policy to node.
ANDROID: binder: add support for RT prio inheritance.
ANDROID: binder: push new transactions to waiting threads.
ANDROID: binder: remove proc waitqueue
FROMLIST: binder: remove global binder lock
FROMLIST: binder: fix death race conditions
FROMLIST: binder: protect against stale pointers in print_binder_transaction
FROMLIST: binder: protect binder_ref with outer lock
FROMLIST: binder: use inner lock to protect thread accounting
FROMLIST: binder: protect transaction_stack with inner lock.
FROMLIST: binder: protect proc->threads with inner_lock
FROMLIST: binder: protect proc->nodes with inner lock
FROMLIST: binder: add spinlock to protect binder_node
FROMLIST: binder: add spinlocks to protect todo lists
FROMLIST: binder: use inner lock to sync work dq and node counts
FROMLIST: binder: introduce locking helper functions
FROMLIST: binder: use node->tmp_refs to ensure node safety
FROMLIST: binder: refactor binder ref inc/dec for thread safety
FROMLIST: binder: make sure accesses to proc/thread are safe
FROMLIST: binder: make sure target_node has strong ref
FROMLIST: binder: guarantee txn complete / errors delivered in-order
FROMLIST: binder: refactor binder_pop_transaction
FROMLIST: binder: use atomic for transaction_log index
FROMLIST: binder: add more debug info when allocation fails.
FROMLIST: binder: protect against two threads freeing buffer
FROMLIST: binder: remove dead code in binder_get_ref_for_node
FROMLIST: binder: don't modify thread->looper from other threads
FROMLIST: binder: avoid race conditions when enqueuing txn
FROMLIST: binder: refactor queue management in binder_thread_read
FROMLIST: binder: add log information for binder transaction failures
FROMLIST: binder: make binder_last_id an atomic
FROMLIST: binder: change binder_stats to atomics
FROMLIST: binder: add protection for non-perf cases
FROMLIST: binder: remove binder_debug_no_lock mechanism
FROMLIST: binder: move binder_alloc to separate file
FROMLIST: binder: separate out binder_alloc functions
FROMLIST: binder: remove unneeded cleanup code
FROMLIST: binder: separate binder allocator structure from binder proc
android: binder: add padding to binder_fd_array_object.
binder: revert fine-grained locking and later to update to new version
input: touchscreen: stm: disable touch earlier
ANDROID: cpufreq: stats: Fix dead stats clearing timing
FROMLIST: arm64: prevent regressions in compressed kernel image size when upgrading to binutils 2.27
FROMLIST: kbuild: fix linker feature test macros when cross compiling with Clang
Subject: USB: phy-msm-qusb-v2: Enable autoresume only when device is connected
usb: pd: Change source/sink caps.
add build.config.clang.lto
add a workaround for ld.gold crash with ARM64_MODULE_PLTS
drivers/firmware/efi/libstub: disable LTO
arch/arm64/crypto: disable LTO for aes-ce-cipher.c
mod/empty.o: disable LTO
add support for CONFIG_DYNAMIC_FTRACE with clang LTO
add build system support for clang LTO
input: synaptics_dsx: remove _ctype dependency
arm64: replace the mrs_s/msr_s macros for C callers
arm64: keep .altinstructions and .altinstr_replacement
kbuild: fix CONFIG_LD_DEAD_CODE_DATA_ELIMINATION with ld.gold
kbuild: add ld-name macro and support for ld.gold
UPSTREAM: kbuild: linker script do not match C names unless LD_DEAD_CODE_DATA_ELIMINATION is configured
UPSTREAM: kbuild: keep data tables through dead code elimination
UPSTREAM: kbuild: -ffunction-sections fix for archs with conflicting sections
BACKPORT: kbuild: allow archs to select link dead code/data elimination
Revert "arm64: dts: lge: remove references to mnh thermal zones and driver"
Revert "arm64: dts: htc: remove references to mnh thermal zones and driver"
arm64/configs: wahoo: enable CONFIG_MNH_THERMAL_HOST
misc: mnh: enable ddr pad isolation before suspend
misc: mnh: fix boot and power options upon resume
staging: bcm15602: wait 10ms after disable before re-enable
misc: mnh: better partial active
kbuild: clang: fix build failures with sparse check
Revert "LINARO: Add -meabi gnu to the clang parameters"
fs: Improve eventpoll logging to stop indicting timerfd
staging android: Keep timestamp info of merged fences.
BACKPORT: net: xfrm: support setting an output mark.
build.config: Add debug kernel build configs
msm: thermal: fix return value check for scm_is_secure_device() API
ANDROID: binder: don't enqueue death notifications to thread todo.
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
Makefile
arch/arm64/Makefile
arch/arm64/include/asm/vdso_datapage.h
arch/arm64/kernel/asm-offsets.c
arch/arm64/kernel/psci.c
arch/arm64/kernel/vdso.c
arch/arm64/kernel/vdso/gettimeofday.S
arch/arm64/mm/kasan_init.c
arch/arm64/mm/mmu.c
drivers/power/supply/qcom/qpnp-fg-gen3.c
include/linux/compiler-clang.h
kernel/time/timekeeping.c
scripts/Kbuild.include
scripts/Makefile.build
security/keys/keyctl.c
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clock_gettime(CLOCK_BOOTTIME,) slows down after significant
accumulation of suspend time creating a large offset between it and
CLOCK_MONOTONIC time. The __iter_div_u64_rem() is only for the usage
of adding a few second+nanosecond times and saving cycles on more
expensive remainder and division operations, but iterates one second
at a time which quickly goes out of scale in CLOCK_BOOTTIME's case
since it was specified as nanoseconds only.
The fix is to split off seconds from the boot time and cap the
nanoseconds so that __iter_div_u64_rem does not iterate.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 72406285
Change-Id: Ia647ef1e76b7ba3b0c003028d4b3b955635adabb
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Permit vdso to be enabled or disabled at will to manage performance
experiments on the dogfood population. Parameters are accessible
from user space at /sys/module/vdso/parameters/enable_{32|64}:
enable_64=0 -> 64 bit vdso disabled
enable_32=0 -> 32 bit vdso disabled
Overhead appears to be ~2ns to perform the checking on every call.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Test: manual, bionic-benchmarks --bionic_xml=vdso.xml to confirm.
Bug: 70518189
Change-Id: Ic0fefa61919c93ad809eb20c5a8c8c1590b4cfc3
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(cherry pick from url https://patchwork.kernel.org/patch/10053549/)
Add time() vdso support to match up with existing support in the x86's
vdso. Currently benefitting arm and arm64 which uses the common
vgettimeofday.c implementation. On arm provides about a ~14 fold
improvement in speed over the straight syscall, and about a ~5 fold
improvement in speed over an alternate library implementation that
relies on the vdso call to gettimeofday to fulfill the request.
We can provide __vdso_time even if we can not provide a speed
enhanced __vdso_gettimeofday.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Bug: 63737556
Bug: 20045882
Change-Id: I0bb3c6bafe57f9ed69350e2dd54edaae58316e8f
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supported timer
(cherry pick from url https://patchwork.kernel.org/patch/10044539/)
Take an effort to recode the arm64 vdso code from assembler to C
previously submitted by Andrew Pinski <apinski@cavium.com>, rework
it for use in both arm and arm64, overlapping any optimizations
for each architecture. But instead of landing it in arm64, land the
result into lib/vdso and unify both implementations to simplify
future maintenance.
If ARCH_PROVIDES_TIMER is not defined, do not expose gettimeofday.
libc will default directly to syscall. Also ifdef clock_gettime
switch cases and stubs if not supported and other unused components.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Cc: James Morse <james.morse@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Andrew Pinski <apinski@cavium.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Bug: 63737556
Bug: 20045882
Change-Id: I362a7114db0aac800e16eb90d14a8739e18f42e4
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(cherry pick from url https://patchwork.kernel.org/patch/10044503/)
Take an effort to recode the arm64 vdso code from assembler to C
previously submitted by Andrew Pinski <apinski@cavium.com>, rework
it for use in both arm and arm64, overlapping any optimizations
for each architecture. But instead of landing it in arm64, land the
result into lib/vdso and unify both implementations to simplify
future maintenance.
Add a case for CLOCK_BOOTTIME as it is popular for measuring
relative time on systems expected to suspend() or hibernate().
Android uses CLOCK_BOOTTIME for all relative time measurements
and timeouts. Switching to vdso reduced CPU utilization and improves
accuracy. There is also a desire by some partners to switch all
logging over to CLOCK_BOOTTIME, and thus this operation alone would
contribute to a near percentile CPU load.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Cc: James Morse <james.morse@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Andrew Pinski <apinski@cavium.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Bug: 63737556
Bug: 20045882
Change-Id: I76c26b054baf7f1100e03c65d6b16fe649b883b1
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(cherry pick from url https://patchwork.kernel.org/patch/10044497/)
Take an effort to recode the arm64 vdso code from assembler to C
previously submitted by Andrew Pinski <apinski@cavium.com>, rework
it for use in both arm and arm64, overlapping any optimizations
for each architecture. But instead of landing it in arm64, land the
result into lib/vdso and unify both implementations to simplify
future maintenance.
Declare arch/arm/vdso/vgettimeofday.c to be a candidate for a global
implementation of the vdso timer calls. The hope is that new
architectures can take advantage of the current unification of
arm and arm64 implementations.
We urge future efforts to merge their implementations into the
global vgettimeofday.c file and thus provide functional parity.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Cc: James Morse <james.morse@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Andrew Pinski <apinski@cavium.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Bug: 63737556
Bug: 20045882
Change-Id: If7da1d8144684d52ed9520a581e6023c623df931
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Changes in 4.4.120: (35 commits)
hrtimer: Ensure POSIX compliance (relative CLOCK_REALTIME hrtimers)
f2fs: fix a bug caused by NULL extent tree
mtd: nand: gpmi: Fix failure when a erased page has a bitflip at BBM
ipv6: icmp6: Allow icmp messages to be looped back
ARM: 8731/1: Fix csum_partial_copy_from_user() stack mismatch
sget(): handle failures of register_shrinker()
drm/nouveau/pci: do a msi rearm on init
spi: atmel: fixed spin_lock usage inside atmel_spi_remove
net: arc_emac: fix arc_emac_rx() error paths
scsi: storvsc: Fix scsi_cmd error assignments in storvsc_handle_error
ARM: dts: ls1021a: fix incorrect clock references
lib/mpi: Fix umul_ppmm() for MIPS64r6
tg3: Add workaround to restrict 5762 MRRS to 2048
tg3: Enable PHY reset in MTU change path for 5720
bnx2x: Improve reliability in case of nested PCI errors
led: core: Fix brightness setting when setting delay_off=0
s390/dasd: fix wrongly assigned configuration data
IB/mlx4: Fix mlx4_ib_alloc_mr error flow
IB/ipoib: Fix race condition in neigh creation
xfs: quota: fix missed destroy of qi_tree_lock
xfs: quota: check result of register_shrinker()
e1000: fix disabling already-disabled warning
drm/ttm: check the return value of kzalloc
mac80211: mesh: drop frames appearing to be from us
can: flex_can: Correct the checking for frame length in flexcan_start_xmit()
bnxt_en: Fix the 'Invalid VF' id check in bnxt_vf_ndo_prep routine.
xen-netfront: enable device after manual module load
mdio-sun4i: Fix a memory leak
SolutionEngine771x: fix Ether platform data
xen/gntdev: Fix off-by-one error when unmapping with holes
xen/gntdev: Fix partial gntdev_mmap() cleanup
sctp: make use of pre-calculated len
net: gianfar_ptp: move set_fipers() to spinlock protecting area
MIPS: Implement __multi3 for GCC7 MIPS64r6 builds
Linux 4.4.120
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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[ Upstream commit bbc25bee37d2b32cf3a1fab9195b6da3a185614a ]
Current MIPS64r6 toolchains aren't able to generate efficient
DMULU/DMUHU based code for the C implementation of umul_ppmm(), which
performs an unsigned 64 x 64 bit multiply and returns the upper and
lower 64-bit halves of the 128-bit result. Instead it widens the 64-bit
inputs to 128-bits and emits a __multi3 intrinsic call to perform a 128
x 128 multiply. This is both inefficient, and it results in a link error
since we don't include __multi3 in MIPS linux.
For example commit 90a53e4432b1 ("cfg80211: implement regdb signature
checking") merged in v4.15-rc1 recently broke the 64r6_defconfig and
64r6el_defconfig builds by indirectly selecting MPILIB. The same build
errors can be reproduced on older kernels by enabling e.g. CRYPTO_RSA:
lib/mpi/generic_mpih-mul1.o: In function `mpihelp_mul_1':
lib/mpi/generic_mpih-mul1.c:50: undefined reference to `__multi3'
lib/mpi/generic_mpih-mul2.o: In function `mpihelp_addmul_1':
lib/mpi/generic_mpih-mul2.c:49: undefined reference to `__multi3'
lib/mpi/generic_mpih-mul3.o: In function `mpihelp_submul_1':
lib/mpi/generic_mpih-mul3.c:49: undefined reference to `__multi3'
lib/mpi/mpih-div.o In function `mpihelp_divrem':
lib/mpi/mpih-div.c:205: undefined reference to `__multi3'
lib/mpi/mpih-div.c:142: undefined reference to `__multi3'
Therefore add an efficient MIPS64r6 implementation of umul_ppmm() using
inline assembly and the DMULU/DMUHU instructions, to prevent __multi3
calls being emitted.
Fixes: 7fd08ca58ae6 ("MIPS: Add build support for the MIPS R6 ISA")
Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-mips@linux-mips.org
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.118: (193 commits)
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
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
net/Kconfig
net/core/Makefile
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commit e7c52b84fb18f08ce49b6067ae6285aca79084a8 upstream.
We get a lot of very large stack frames using gcc-7.0.1 with the default
-fsanitize-address-use-after-scope --param asan-stack=1 options, which can
easily cause an overflow of the kernel stack, e.g.
drivers/gpu/drm/i915/gvt/handlers.c:2434:1: warning: the frame size of 46176 bytes is larger than 3072 bytes
drivers/net/wireless/ralink/rt2x00/rt2800lib.c:5650:1: warning: the frame size of 23632 bytes is larger than 3072 bytes
lib/atomic64_test.c:250:1: warning: the frame size of 11200 bytes is larger than 3072 bytes
drivers/gpu/drm/i915/gvt/handlers.c:2621:1: warning: the frame size of 9208 bytes is larger than 3072 bytes
drivers/media/dvb-frontends/stv090x.c:3431:1: warning: the frame size of 6816 bytes is larger than 3072 bytes
fs/fscache/stats.c:287:1: warning: the frame size of 6536 bytes is larger than 3072 bytes
To reduce this risk, -fsanitize-address-use-after-scope is now split out
into a separate CONFIG_KASAN_EXTRA Kconfig option, leading to stack
frames that are smaller than 2 kilobytes most of the time on x86_64. An
earlier version of this patch also prevented combining KASAN_EXTRA with
KASAN_INLINE, but that is no longer necessary with gcc-7.0.1.
All patches to get the frame size below 2048 bytes with CONFIG_KASAN=y
and CONFIG_KASAN_EXTRA=n have been merged by maintainers now, so we can
bring back that default now. KASAN_EXTRA=y still causes lots of
warnings but now defaults to !COMPILE_TEST to disable it in
allmodconfig, and it remains disabled in all other defconfigs since it
is a new option. I arbitrarily raise the warning limit for KASAN_EXTRA
to 3072 to reduce the noise, but an allmodconfig kernel still has around
50 warnings on gcc-7.
I experimented a bit more with smaller stack frames and have another
follow-up series that reduces the warning limit for 64-bit architectures
to 1280 bytes (without CONFIG_KASAN).
With earlier versions of this patch series, I also had patches to address
the warnings we get with KASAN and/or KASAN_EXTRA, using a
"noinline_if_stackbloat" annotation.
That annotation now got replaced with a gcc-8 bugfix (see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715) and a workaround for
older compilers, which means that KASAN_EXTRA is now just as bad as
before and will lead to an instant stack overflow in a few extreme
cases.
This reverts parts of commit 3f181b4d8652 ("lib/Kconfig.debug: disable
-Wframe-larger-than warnings with KASAN=y"). Two patches in linux-next
should be merged first to avoid introducing warnings in an allmodconfig
build:
3cd890dbe2a4 ("media: dvb-frontends: fix i2c access helpers for KASAN")
16c3ada89cff ("media: r820t: fix r820t_write_reg for KASAN")
Do we really need to backport this?
I think we do: without this patch, enabling KASAN will lead to
unavoidable kernel stack overflow in certain device drivers when built
with gcc-7 or higher on linux-4.10+ or any version that contains a
backport of commit c5caf21ab0cf8. Most people are probably still on
older compilers, but it will get worse over time as they upgrade their
distros.
The warnings we get on kernels older than this should all be for code
that uses dangerously large stack frames, though most of them do not
cause an actual stack overflow by themselves.The asan-stack option was
added in linux-4.0, and commit 3f181b4d8652 ("lib/Kconfig.debug:
disable -Wframe-larger-than warnings with KASAN=y") effectively turned
off the warning for allmodconfig kernels, so I would like to see this
fix backported to any kernels later than 4.0.
I have done dozens of fixes for individual functions with stack frames
larger than 2048 bytes with asan-stack, and I plan to make sure that
all those fixes make it into the stable kernels as well (most are
already there).
Part of the complication here is that asan-stack (from 4.0) was
originally assumed to always require much larger stacks, but that
turned out to be a combination of multiple gcc bugs that we have now
worked around and fixed, but sanitize-address-use-after-scope (from
v4.10) has a much higher inherent stack usage and also suffers from at
least three other problems that we have analyzed but not yet fixed
upstream, each of them makes the stack usage more severe than it should
be.
Link: http://lkml.kernel.org/r/20171221134744.2295529-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[arnd: rebase to v4.4; only re-enable warning]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 8dfd2f22d3bf3ab7714f7495ad5d897b8845e8c1 ]
Callers of sprint_oid() do not check its return value before printing
the result. In the case where the OID is zero-length, -EBADMSG was
being returned without anything being written to the buffer, resulting
in uninitialized stack memory being printed. Fix this by writing
"(bad)" to the buffer in the cases where -EBADMSG is returned.
Fixes: 4f73175d0375 ("X.509: Add utility functions to render OIDs as strings")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Currently CONFIG_TIMER_STATS exposes process information across namespaces:
kernel/time/timer_list.c print_timer():
SEQ_printf(m, ", %s/%d", tmp, timer->start_pid);
/proc/timer_list:
#11: <0000000000000000>, hrtimer_wakeup, S:01, do_nanosleep, cron/2570
Given that the tracer can give the same information, this patch entirely
removes CONFIG_TIMER_STATS.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: linux-doc@vger.kernel.org
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Xing Gao <xgao01@email.wm.edu>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jessica Frazelle <me@jessfraz.com>
Cc: kernel-hardening@lists.openwall.com
Cc: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Michal Marek <mmarek@suse.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-api@vger.kernel.org
Cc: Arjan van de Ven <arjan@linux.intel.com>
Link: http://lkml.kernel.org/r/20170208192659.GA32582@beast
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[harsh@prjkt.io: Backport to msm-4.4]
Signed-off-by: Harsh Shandilya <harsh@prjkt.io>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Changes in 4.4.115: (68 commits)
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: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/usb/gadget/function/f_fs.c
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[ 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>
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commit 6974f0c4555e285ab217cee58b6e874f776ff409 upstream.
This adds support for compiling with a rough equivalent to the glibc
_FORTIFY_SOURCE=1 feature, providing compile-time and runtime buffer
overflow checks for string.h functions when the compiler determines the
size of the source or destination buffer at compile-time. Unlike glibc,
it covers buffer reads in addition to writes.
GNU C __builtin_*_chk intrinsics are avoided because they would force a
much more complex implementation. They aren't designed to detect read
overflows and offer no real benefit when using an implementation based
on inline checks. Inline checks don't add up to much code size and
allow full use of the regular string intrinsics while avoiding the need
for a bunch of _chk functions and per-arch assembly to avoid wrapper
overhead.
This detects various overflows at compile-time in various drivers and
some non-x86 core kernel code. There will likely be issues caught in
regular use at runtime too.
Future improvements left out of initial implementation for simplicity,
as it's all quite optional and can be done incrementally:
* Some of the fortified string functions (strncpy, strcat), don't yet
place a limit on reads from the source based on __builtin_object_size of
the source buffer.
* Extending coverage to more string functions like strlcat.
* It should be possible to optionally use __builtin_object_size(x, 1) for
some functions (C strings) to detect intra-object overflows (like
glibc's _FORTIFY_SOURCE=2), but for now this takes the conservative
approach to avoid likely compatibility issues.
* The compile-time checks should be made available via a separate config
option which can be enabled by default (or always enabled) once enough
time has passed to get the issues it catches fixed.
Kees said:
"This is great to have. While it was out-of-tree code, it would have
blocked at least CVE-2016-3858 from being exploitable (improper size
argument to strlcpy()). I've sent a number of fixes for
out-of-bounds-reads that this detected upstream already"
[arnd@arndb.de: x86: fix fortified memcpy]
Link: http://lkml.kernel.org/r/20170627150047.660360-1-arnd@arndb.de
[keescook@chromium.org: avoid panic() in favor of BUG()]
Link: http://lkml.kernel.org/r/20170626235122.GA25261@beast
[keescook@chromium.org: move from -mm, add ARCH_HAS_FORTIFY_SOURCE, tweak Kconfig help]
Link: http://lkml.kernel.org/r/20170526095404.20439-1-danielmicay@gmail.com
Link: http://lkml.kernel.org/r/1497903987-21002-8-git-send-email-keescook@chromium.org
Signed-off-by: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[@nathanchance: Fixed conflicts]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
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Commit cd9e61ed1eebbcd5dfad59475d41ec58d9b64b6a upstream.
Patch series "rbtree: Cache leftmost node internally", v4.
A series to extending rbtrees to internally cache the leftmost node such
that we can have fast overlap check optimization for all interval tree
users[1]. The benefits of this series are that:
(i) Unify users that do internal leftmost node caching.
(ii) Optimize all interval tree users.
(iii) Convert at least two new users (epoll and procfs) to the new interface.
This patch (of 16):
Red-black tree semantics imply that nodes with smaller or greater (or
equal for duplicates) keys always be to the left and right,
respectively. For the kernel this is extremely evident when considering
our rb_first() semantics. Enabling lookups for the smallest node in the
tree in O(1) can save a good chunk of cycles in not having to walk down
the tree each time. To this end there are a few core users that
explicitly do this, such as the scheduler and rtmutexes. There is also
the desire for interval trees to have this optimization allowing faster
overlap checking.
This patch introduces a new 'struct rb_root_cached' which is just the
root with a cached pointer to the leftmost node. The reason why the
regular rb_root was not extended instead of adding a new structure was
that this allows the user to have the choice between memory footprint
and actual tree performance. The new wrappers on top of the regular
rb_root calls are:
- rb_first_cached(cached_root) -- which is a fast replacement
for rb_first.
- rb_insert_color_cached(node, cached_root, new)
- rb_erase_cached(node, cached_root)
In addition, augmented cached interfaces are also added for basic
insertion and deletion operations; which becomes important for the
interval tree changes.
With the exception of the inserts, which adds a bool for updating the
new leftmost, the interfaces are kept the same. To this end, porting rb
users to the cached version becomes really trivial, and keeping current
rbtree semantics for users that don't care about the optimization
requires zero overhead.
Link: http://lkml.kernel.org/r/20170719014603.19029-2-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Harsh Shandilya <harsh@prjkt.io>
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Signed-off-by: Joe Maples <joe@frap129.org>
Signed-off-by: Harsh Shandilya <harsh@prjkt.io>
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Changes in 4.4.106: (106 commits)
can: ti_hecc: Fix napi poll return value for repoll
can: kvaser_usb: free buf in error paths
can: kvaser_usb: Fix comparison bug in kvaser_usb_read_bulk_callback()
can: kvaser_usb: ratelimit errors if incomplete messages are received
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
can: ems_usb: cancel urb on -EPIPE and -EPROTO
can: esd_usb2: cancel urb on -EPIPE and -EPROTO
can: usb_8dev: cancel urb on -EPIPE and -EPROTO
virtio: release virtio index when fail to device_register
hv: kvp: Avoid reading past allocated blocks from KVP file
isa: Prevent NULL dereference in isa_bus driver callbacks
scsi: libsas: align sata_device's rps_resp on a cacheline
efi: Move some sysfs files to be read-only by root
ASN.1: fix out-of-bounds read when parsing indefinite length item
ASN.1: check for error from ASN1_OP_END__ACT actions
X.509: reject invalid BIT STRING for subjectPublicKey
x86/PCI: Make broadcom_postcore_init() check acpi_disabled
ALSA: pcm: prevent UAF in snd_pcm_info
ALSA: seq: Remove spurious WARN_ON() at timer check
ALSA: usb-audio: Fix out-of-bound error
ALSA: usb-audio: Add check return value for usb_string()
iommu/vt-d: Fix scatterlist offset handling
s390: fix compat system call table
kdb: Fix handling of kallsyms_symbol_next() return value
drm: extra printk() wrapper macros
drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
media: dvb: i2c transfers over usb cannot be done from stack
arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one
KVM: VMX: remove I/O port 0x80 bypass on Intel hosts
arm64: fpsimd: Prevent registers leaking from dead tasks
ARM: BUG if jumping to usermode address in kernel mode
ARM: avoid faulting on qemu
scsi: storvsc: Workaround for virtual DVD SCSI version
thp: reduce indentation level in change_huge_pmd()
thp: fix MADV_DONTNEED vs. numa balancing race
mm: drop unused pmdp_huge_get_and_clear_notify()
Revert "drm/armada: Fix compile fail"
Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"
Revert "s390/kbuild: enable modversions for symbols exported from asm"
vti6: Don't report path MTU below IPV6_MIN_MTU.
ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure
x86/hpet: Prevent might sleep splat on resume
selftest/powerpc: Fix false failures for skipped tests
module: set __jump_table alignment to 8
ARM: OMAP2+: Fix device node reference counts
ARM: OMAP2+: Release device node after it is no longer needed.
gpio: altera: Use handle_level_irq when configured as a level_high
HID: chicony: Add support for another ASUS Zen AiO keyboard
usb: gadget: configs: plug memory leak
USB: gadgetfs: Fix a potential memory leak in 'dev_config()'
kvm: nVMX: VMCLEAR should not cause the vCPU to shut down
libata: drop WARN from protocol error in ata_sff_qc_issue()
workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq
scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters
irqchip/crossbar: Fix incorrect type of register size
KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset
arm: KVM: Survive unknown traps from guests
arm64: KVM: Survive unknown traps from guests
spi_ks8995: fix "BUG: key accdaa28 not in .data!"
bnx2x: prevent crash when accessing PTP with interface down
bnx2x: fix possible overrun of VFPF multicast addresses array
bnx2x: do not rollback VF MAC/VLAN filters we did not configure
ipv6: reorder icmpv6_init() and ip6_mr_init()
crypto: s5p-sss - Fix completing crypto request in IRQ handler
i2c: riic: fix restart condition
zram: set physical queue limits to avoid array out of bounds accesses
netfilter: don't track fragmented packets
axonram: Fix gendisk handling
drm/amd/amdgpu: fix console deadlock if late init failed
powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested
EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro
EDAC, i5000, i5400: Fix definition of NRECMEMB register
kbuild: pkg: use --transform option to prefix paths in tar
mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl()
route: also update fnhe_genid when updating a route cache
route: update fnhe_expires for redirect when the fnhe exists
lib/genalloc.c: make the avail variable an atomic_long_t
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
NFS: Fix a typo in nfs_rename()
sunrpc: Fix rpc_task_begin trace point
block: wake up all tasks blocked in get_request()
sparc64/mm: set fields in deferred pages
sctp: do not free asoc when it is already dead in sctp_sendmsg
sctp: use the right sk after waking up from wait_buf sleep
atm: horizon: Fix irq release error
jump_label: Invoke jump_label_test() via early_initcall()
xfrm: Copy policy family in clone_policy
IB/mlx4: Increase maximal message size under UD QP
IB/mlx5: Assign send CQ and recv CQ of UMR QP
afs: Connect up the CB.ProbeUuid
ipvlan: fix ipv6 outbound device
audit: ensure that 'audit=1' actually enables audit for PID 1
ipmi: Stop timers before cleaning up the module
s390: always save and restore all registers on context switch
more bio_map_user_iov() leak fixes
tipc: fix memory leak in tipc_accept_from_sock()
rds: Fix NULL pointer dereference in __rds_rdma_map
sit: update frag_off info
packet: fix crash in fanout_demux_rollover()
net/packet: fix a race in packet_bind() and packet_notifier()
Revert "x86/efi: Build our own page table structures"
Revert "x86/efi: Hoist page table switching code into efi_call_virt()"
Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers"
arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one
usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping
Linux 4.4.106
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
arch/arm/include/asm/kvm_arm.h
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instead of 0
[ Upstream commit 1f3c790bd5989fcfec9e53ad8fa09f5b740c958f ]
line-range is supposed to treat "1-" as "1-endoffile", so
handle the special case by setting last_lineno to UINT_MAX.
Fixes this error:
dynamic_debug:ddebug_parse_query: last-line:0 < 1st-line:1
dynamic_debug:ddebug_exec_query: query parse failed
Link: http://lkml.kernel.org/r/10a6a101-e2be-209f-1f41-54637824788e@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 36a3d1dd4e16bcd0d2ddfb4a2ec7092f0ae0d931 ]
If the amount of resources allocated to a gen_pool exceeds 2^32 then the
avail atomic overflows and this causes problems when clients try and
borrow resources from the pool. This is only expected to be an issue on
64 bit systems.
Add the <linux/atomic.h> header to pull in atomic_long* operations. So
that 32 bit systems continue to use atomic32_t but 64 bit systems can
use atomic64_t.
Link: http://lkml.kernel.org/r/1509033843-25667-1-git-send-email-sbates@raithlin.com
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Daniel Mentz <danielmentz@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 81a7be2cd69b412ab6aeacfe5ebf1bb6e5bce955 upstream.
asn1_ber_decoder() was ignoring errors from actions associated with the
opcodes ASN1_OP_END_SEQ_ACT, ASN1_OP_END_SET_ACT,
ASN1_OP_END_SEQ_OF_ACT, and ASN1_OP_END_SET_OF_ACT. In practice, this
meant the pkcs7_note_signed_info() action (since that was the only user
of those opcodes). Fix it by checking for the error, just like the
decoder does for actions associated with the other opcodes.
This bug allowed users to leak slab memory by repeatedly trying to add a
specially crafted "pkcs7_test" key (requires CONFIG_PKCS7_TEST_KEY).
In theory, this bug could also be used to bypass module signature
verification, by providing a PKCS#7 message that is misparsed such that
a signature's ->authattrs do not contain its ->msgdigest. But it
doesn't seem practical in normal cases, due to restrictions on the
format of the ->authattrs.
Fixes: 42d5ec27f873 ("X.509: Add an ASN.1 decoder")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e0058f3a874ebb48b25be7ff79bc3b4e59929f90 upstream.
In asn1_ber_decoder(), indefinitely-sized ASN.1 items were being passed
to the action functions before their lengths had been computed, using
the bogus length of 0x80 (ASN1_INDEFINITE_LENGTH). This resulted in
reading data past the end of the input buffer, when given a specially
crafted message.
Fix it by rearranging the code so that the indefinite length is resolved
before the action is called.
This bug was originally found by fuzzing the X.509 parser in userspace
using libFuzzer from the LLVM project.
KASAN report (cleaned up slightly):
BUG: KASAN: slab-out-of-bounds in memcpy ./include/linux/string.h:341 [inline]
BUG: KASAN: slab-out-of-bounds in x509_fabricate_name.constprop.1+0x1a4/0x940 crypto/asymmetric_keys/x509_cert_parser.c:366
Read of size 128 at addr ffff880035dd9eaf by task keyctl/195
CPU: 1 PID: 195 Comm: keyctl Not tainted 4.14.0-09238-g1d3b78bbc6e9 #26
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-20171110_100015-anatol 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xd1/0x175 lib/dump_stack.c:53
print_address_description+0x78/0x260 mm/kasan/report.c:252
kasan_report_error mm/kasan/report.c:351 [inline]
kasan_report+0x23f/0x350 mm/kasan/report.c:409
memcpy+0x1f/0x50 mm/kasan/kasan.c:302
memcpy ./include/linux/string.h:341 [inline]
x509_fabricate_name.constprop.1+0x1a4/0x940 crypto/asymmetric_keys/x509_cert_parser.c:366
asn1_ber_decoder+0xb4a/0x1fd0 lib/asn1_decoder.c:447
x509_cert_parse+0x1c7/0x620 crypto/asymmetric_keys/x509_cert_parser.c:89
x509_key_preparse+0x61/0x750 crypto/asymmetric_keys/x509_public_key.c:174
asymmetric_key_preparse+0xa4/0x150 crypto/asymmetric_keys/asymmetric_type.c:388
key_create_or_update+0x4d4/0x10a0 security/keys/key.c:850
SYSC_add_key security/keys/keyctl.c:122 [inline]
SyS_add_key+0xe8/0x290 security/keys/keyctl.c:62
entry_SYSCALL_64_fastpath+0x1f/0x96
Allocated by task 195:
__do_kmalloc_node mm/slab.c:3675 [inline]
__kmalloc_node+0x47/0x60 mm/slab.c:3682
kvmalloc ./include/linux/mm.h:540 [inline]
SYSC_add_key security/keys/keyctl.c:104 [inline]
SyS_add_key+0x19e/0x290 security/keys/keyctl.c:62
entry_SYSCALL_64_fastpath+0x1f/0x96
Fixes: 42d5ec27f873 ("X.509: Add an ASN.1 decoder")
Reported-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Don't populate the read-only arrays dec32table and dec64table on the
stack, instead make them both static const. Makes the object code
smaller by over 10K bytes:
Before:
text data bss dec hex filename
31500 0 0 31500 7b0c lib/lz4/lz4_decompress.o
After:
text data bss dec hex filename
20237 176 0 20413 4fbd lib/lz4/lz4_decompress.o
(gcc version 7.2.0 x86_64)
Link: http://lkml.kernel.org/r/20170921221939.20820-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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commit c743f0a5c50f2fcbc628526279cfa24f3dabe182 upstream.
More users for for_each_cpu_wrap() have appeared. Promote the construct
to generic cpumask interface.
The implementation is slightly modified to reduce arguments.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Lauro Ramos Venancio <lvenanci@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: lwang@redhat.com
Link: http://lkml.kernel.org/r/20170414122005.o35me2h5nowqkxbv@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[bwh: Backported to 3.16: there's no old version of the function to delete]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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strlen is often used incorectly to get the length of strings
defined at compile time. In these cases, the behavior can be
replicated with sizeof(X) - 1, which is calculated at compile
time rather than runtime, reducing overhead. I've created a
simple macro to replace these instances and applied it to all
the files compiled into the wahoo kernel.
Signed-off-by: Joe Maples <joe@frap129.org>
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There is a slightly faster way (in terms of the number of instructions
being used) to calculate the position of a middle element, preserving
integer overflow safeness.
./scripts/bloat-o-meter lib/bsearch.o.old lib/bsearch.o.new
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-24 (-24)
function old new delta
bsearch 122 98 -24
TEST
INT array of size 100001, elements [0..100000]. gcc 7.1, Os, x86_64.
a) bsearch() of existing key "100001 - 2":
BASE
====
$ perf stat ./a.out
Performance counter stats for './a.out':
619.445196 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
133 page-faults:u # 0.215 K/sec
1,949,517,279 cycles:u # 3.147 GHz (83.06%)
181,017,938 stalled-cycles-frontend:u # 9.29% frontend cycles idle (83.05%)
82,959,265 stalled-cycles-backend:u # 4.26% backend cycles idle (67.02%)
4,355,706,383 instructions:u # 2.23 insn per cycle
# 0.04 stalled cycles per insn (83.54%)
1,051,539,242 branches:u # 1697.550 M/sec (83.54%)
15,263,381 branch-misses:u # 1.45% of all branches (83.43%)
0.620082548 seconds time elapsed
PATCHED
=======
$ perf stat ./a.out
Performance counter stats for './a.out':
475.097316 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
135 page-faults:u # 0.284 K/sec
1,487,467,717 cycles:u # 3.131 GHz (82.95%)
186,537,162 stalled-cycles-frontend:u # 12.54% frontend cycles idle (82.93%)
28,797,869 stalled-cycles-backend:u # 1.94% backend cycles idle (67.10%)
3,807,564,203 instructions:u # 2.56 insn per cycle
# 0.05 stalled cycles per insn (83.57%)
1,049,344,291 branches:u # 2208.693 M/sec (83.60%)
5,485 branch-misses:u # 0.00% of all branches (83.58%)
0.475760235 seconds time elapsed
b) bsearch() of un-existing key "100001 + 2":
BASE
====
$ perf stat ./a.out
Performance counter stats for './a.out':
499.244480 task-clock:u (msec) # 0.999 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
132 page-faults:u # 0.264 K/sec
1,571,194,855 cycles:u # 3.147 GHz (83.18%)
13,450,980 stalled-cycles-frontend:u # 0.86% frontend cycles idle (83.18%)
21,256,072 stalled-cycles-backend:u # 1.35% backend cycles idle (66.78%)
4,171,197,909 instructions:u # 2.65 insn per cycle
# 0.01 stalled cycles per insn (83.68%)
1,009,175,281 branches:u # 2021.405 M/sec (83.79%)
3,122 branch-misses:u # 0.00% of all branches (83.37%)
0.499871144 seconds time elapsed
PATCHED
=======
$ perf stat ./a.out
Performance counter stats for './a.out':
399.023499 task-clock:u (msec) # 0.998 CPUs utilized
0 context-switches:u # 0.000 K/sec
0 cpu-migrations:u # 0.000 K/sec
134 page-faults:u # 0.336 K/sec
1,245,793,991 cycles:u # 3.122 GHz (83.39%)
11,529,273 stalled-cycles-frontend:u # 0.93% frontend cycles idle (83.46%)
12,116,311 stalled-cycles-backend:u # 0.97% backend cycles idle (66.92%)
3,679,710,005 instructions:u # 2.95 insn per cycle
# 0.00 stalled cycles per insn (83.47%)
1,009,792,625 branches:u # 2530.660 M/sec (83.46%)
2,590 branch-misses:u # 0.00% of all branches (83.12%)
0.399733539 seconds time elapsed
Link: http://lkml.kernel.org/r/20170607150457.5905-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/gpu/drm/msm/msm_gem_submit.c
drivers/media/v4l2-core/v4l2-compat-ioctl32.c
drivers/mmc/core/bus.c
drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
drivers/scsi/ufs/ufshcd.h
kernel/power/process.c
net/wireless/nl80211.c
sound/usb/card.c
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commit 1d9ddde12e3c9bab7f3d3484eb9446315e3571ca upstream.
On a non-preemptible kernel, if KEYCTL_DH_COMPUTE is called with the
largest permitted inputs (16384 bits), the kernel spends 10+ seconds
doing modular exponentiation in mpi_powm() without rescheduling. If all
threads do it, it locks up the system. Moreover, it can cause
rcu_sched-stall warnings.
Notwithstanding the insanity of doing this calculation in kernel mode
rather than in userspace, fix it by calling cond_resched() as each bit
from the exponent is processed. It's still noninterruptible, but at
least it's preemptible now.
Do the cond_resched() once per bit rather than once per MPI limb because
each limb might still easily take 100+ milliseconds on slow CPUs.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 47e0bbb7fa985a0f1b5794a8653fae4f8f49de77 upstream.
request_firmware() failures currently won't get reported at all (the
error code is discarded). What's more, we get confusing messages, like:
# echo -n notafile > /sys/devices/virtual/misc/test_firmware/trigger_request
[ 8280.311856] test_firmware: loading 'notafile'
[ 8280.317042] test_firmware: load of 'notafile' failed: -2
[ 8280.322445] test_firmware: loaded: 0
# echo $?
0
Report the failures via write() errors, and don't say we "loaded"
anything.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 624f5ab8720b3371367327a822c267699c1823b8 upstream.
syzkaller reported a NULL pointer dereference in asn1_ber_decoder(). It
can be reproduced by the following command, assuming
CONFIG_PKCS7_TEST_KEY=y:
keyctl add pkcs7_test desc '' @s
The bug is that if the data buffer is empty, an integer underflow occurs
in the following check:
if (unlikely(dp >= datalen - 1))
goto data_overrun_error;
This results in the NULL data pointer being dereferenced.
Fix it by checking for 'datalen - dp < 2' instead.
Also fix the similar check for 'dp >= datalen - n' later in the same
function. That one possibly could result in a buffer overread.
The NULL pointer dereference was reproducible using the "pkcs7_test" key
type but not the "asymmetric" key type because the "asymmetric" key type
checks for a 0-length payload before calling into the ASN.1 decoder but
the "pkcs7_test" key type does not.
The bug report was:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: asn1_ber_decoder+0x17f/0xe60 lib/asn1_decoder.c:233
PGD 7b708067 P4D 7b708067 PUD 7b6ee067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in:
CPU: 0 PID: 522 Comm: syz-executor1 Not tainted 4.14.0-rc8 #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.3-20171021_125229-anatol 04/01/2014
task: ffff9b6b3798c040 task.stack: ffff9b6b37970000
RIP: 0010:asn1_ber_decoder+0x17f/0xe60 lib/asn1_decoder.c:233
RSP: 0018:ffff9b6b37973c78 EFLAGS: 00010216
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000021c
RDX: ffffffff814a04ed RSI: ffffb1524066e000 RDI: ffffffff910759e0
RBP: ffff9b6b37973d60 R08: 0000000000000001 R09: ffff9b6b3caa4180
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f10ed1f2700(0000) GS:ffff9b6b3ea00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007b6f3000 CR4: 00000000000006f0
Call Trace:
pkcs7_parse_message+0xee/0x240 crypto/asymmetric_keys/pkcs7_parser.c:139
verify_pkcs7_signature+0x33/0x180 certs/system_keyring.c:216
pkcs7_preparse+0x41/0x70 crypto/asymmetric_keys/pkcs7_key_type.c:63
key_create_or_update+0x180/0x530 security/keys/key.c:855
SYSC_add_key security/keys/keyctl.c:122 [inline]
SyS_add_key+0xbf/0x250 security/keys/keyctl.c:62
entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x4585c9
RSP: 002b:00007f10ed1f1bd8 EFLAGS: 00000216 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00007f10ed1f2700 RCX: 00000000004585c9
RDX: 0000000020000000 RSI: 0000000020008ffb RDI: 0000000020008000
RBP: 0000000000000000 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 00007fff1b2260ae
R13: 00007fff1b2260af R14: 00007f10ed1f2700 R15: 0000000000000000
Code: dd ca ff 48 8b 45 88 48 83 e8 01 4c 39 f0 0f 86 a8 07 00 00 e8 53 dd ca ff 49 8d 46 01 48 89 85 58 ff ff ff 48 8b 85 60 ff ff ff <42> 0f b6 0c 30 89 c8 88 8d 75 ff ff ff 83 e0 1f 89 8d 28 ff ff
RIP: asn1_ber_decoder+0x17f/0xe60 lib/asn1_decoder.c:233 RSP: ffff9b6b37973c78
CR2: 0000000000000000
Fixes: 42d5ec27f873 ("X.509: Add an ASN.1 decoder")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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