CAN_M_CAN_PLATFORM is needed to probe the driver on sama5 platforms
after the driver was split into multiple files.
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200723162434.1983643-3-codrin.ciubotariu@microchip.com
These modules are needed to configure bridges in Linux, to take full
advantage of the KSZ switch capabilities.
Signed-off-by: Razvan Stefanescu <razvan.stefanescu@microchip.com>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200723162434.1983643-2-codrin.ciubotariu@microchip.com
Enable DSA and KSZ9477 support as modules. Ethernet switches are used by
the SAMA5D2-ICP board.
Signed-off-by: Razvan Stefanescu <razvan.stefanescu@microchip.com>
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200723162434.1983643-1-codrin.ciubotariu@microchip.com
The sparse tool complains as follows:
drivers/soc/ti/knav_qmss_acc.c:453:23: warning:
symbol 'knav_acc_range_ops' was not declared. Should it be static?
'knav_acc_range_ops' is not used outside of knav_qmss_acc.c,
so marks it static.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Drop the repeated word "an" in a comment.
Insert "and" between "source" and "destination" as is done a few
lines earlier.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Drop the repeated word "the" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: linux-nfs@vger.kernel.org
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Merge misc fixes from Andrew Morton:
"Subsystems affected by this patch series: mm/pagemap, mm/shmem,
mm/hotfixes, mm/memcg, mm/hugetlb, mailmap, squashfs, scripts,
io-mapping, MAINTAINERS, and gdb"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
scripts/gdb: fix lx-symbols 'gdb.error' while loading modules
MAINTAINERS: add KCOV section
io-mapping: indicate mapping failure
scripts/decode_stacktrace: strip basepath from all paths
squashfs: fix length field overlap check in metadata reading
mailmap: add entry for Mike Rapoport
khugepaged: fix null-pointer dereference due to race
mm/hugetlb: avoid hardcoding while checking if cma is enabled
mm: memcg/slab: fix memory leak at non-root kmem_cache destroy
mm/memcg: fix refcount error while moving and swapping
mm/memcontrol: fix OOPS inside mem_cgroup_get_nr_swap_pages()
mm: initialize return of vm_insert_pages
vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right way
mm/mmap.c: close race between munmap() and expand_upwards()/downwards()
We only request ring pairs via K3 DMA driver, switch to use the new
k3_ringacc_request_rings_pair() to simplify the code.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Separate SoC specific initialization and and OF mach data in preparation of
adding support for more K3 SoCs
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Add new API k3_ringacc_request_rings_pair() to request pair of rings at
once, as in the most cases Rings are used with DMA channels, which need to
request pair of rings - one to feed DMA with descriptors (TX/RX FDQ) and
one to receive completions (RX/TX CQ). This will allow to simplify Ringacc
API users.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Pull xtensa csum regression fix from Al Viro:
"Max Filippov caught a breakage introduced in xtensa this cycle
by the csum_and_copy_..._user() series.
Cut'n'paste from the wrong source - the check that belongs
in csum_and_copy_to_user() ended up both there and in
csum_and_copy_from_user()"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
xtensa: fix access check in csum_and_copy_from_user
Add struct k3_ring *ring->flags to the ring dump.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Move the free, occ, windex and rindex under a struct. We can use memset to
zero them and it will allow a cleaner way to extend driver functionality in
the future,
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
- Fix compat vDSO build flags for recent versions of clang
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into master
Pull arm64 fix from Will Deacon:
"Fix compat vDSO build flags for recent versions of clang to tell it
where to find the assembler"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: vdso32: Fix '--prefix=' value for newer versions of clang
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Merge tag 'for-5.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into master
Pull btrfs fixes from David Sterba:
"A few resouce leak fixes from recent patches, all are stable material.
The problems have been observed during testing or have a reproducer"
* tag 'for-5.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix mount failure caused by race with umount
btrfs: fix page leaks after failure to lock page for delalloc
btrfs: qgroup: fix data leak caused by race between writeback and truncate
btrfs: fix double free on ulist after backref resolution failure
Braino when converting "buf->len -=" to "buf->len = len -".
The result is under-estimation of the ralign and rslack values. On
krb5p mounts, this has caused READDIR to fail with EIO, and KASAN
splats when decoding READLINK replies.
As a result of fixing this oversight, the gss_unwrap method now
returns a buf->len that can be shorter than priv_len for small
RPC messages. The additional adjustment done in unwrap_priv_data()
can underflow buf->len. This causes the nfsd_request_too_large
check to fail during some NFSv3 operations.
Reported-by: Marian Rainer-Harbach
Reported-by: Pierre Sauter <pierre.sauter@stwm.de>
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886277
Fixes: 31c9590ae4 ("SUNRPC: Add "@len" parameter to gss_unwrap()")
Reviewed-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Two fixes, the first one to remove compilation warnings and the second
to avoid potentially inefficient allocation of BIOs for direct writes
into sequential zones.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs into master
Pull zonefs fixes from Damien Le Moal:
"Two fixes, the first one to remove compilation warnings and the second
to avoid potentially inefficient allocation of BIOs for direct writes
into sequential zones"
* tag 'zonefs-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: count pages after truncating the iterator
zonefs: Fix compilation warning
When doing a "write" ioctl call, properly check that we have permissions
to do so before copying anything from userspace or anything else so we
can "fail fast". This includes also covering the MEMWRITE ioctl which
previously missed checking for this.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[rw: Fixed locking issue]
Signed-off-by: Richard Weinberger <richard@nod.at>
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Merge tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block into master
Pull io_uring fixes from Jens Axboe:
- Fix discrepancy in how sqe->flags are treated for a few requests,
this makes it consistent (Daniele)
- Ensure that poll driven retry works with double waitqueue poll users
- Fix a missing io_req_init_async() (Pavel)
* tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block:
io_uring: missed req_init_async() for IOSQE_ASYNC
io_uring: always allow drain/link/hardlink/async sqe flags
io_uring: ensure double poll additions work with both request types
One fix:
- Fix a NULL-ptr dereference in the QCOM IOMMU driver
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Merge tag 'iommu-fix-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu into master
Pull iommu fix from Joerg Roedel:
"Fix a NULL-ptr dereference in the QCOM IOMMU driver"
* tag 'iommu-fix-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/qcom: Use domain rather than dev as tlb cookie
One merge window regression, some corruption bugs in HNS and a few more
syzkaller fixes.
- Two long standing syzkaller races
- Fix incorrect HW configuration in HNS
- Restore accidentally dropped locking in IB CM
- Fix ODP prefetch bug added in the big rework several versions ago
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma into master
Pull rdma fixes from Jason Gunthorpe:
"One merge window regression, some corruption bugs in HNS and a few
more syzkaller fixes:
- Two long standing syzkaller races
- Fix incorrect HW configuration in HNS
- Restore accidentally dropped locking in IB CM
- Fix ODP prefetch bug added in the big rework several versions ago"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/mlx5: Prevent prefetch from racing with implicit destruction
RDMA/cm: Protect access to remote_sidr_table
RDMA/core: Fix race in rdma_alloc_commit_uobject()
RDMA/hns: Fix wrong PBL offset when VA is not aligned to PAGE_SIZE
RDMA/hns: Fix wrong assignment of lp_pktn_ini in QPC
RDMA/mlx5: Use xa_lock_irq when access to SRQ table
gets skipped when resuming a device. This is a fix for a previous
stable@ fix.
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Merge tag 'for-5.8/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm into master
Pull device mapper fix from Mike Snitzer:
"A stable fix for DM integrity target's integrity recalculation that
gets skipped when resuming a device. This is a fix for a previous
stable@ fix"
* tag 'for-5.8/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm integrity: fix integrity recalculation that is improperly skipped
Pull i2c fixes from Wolfram Sang:
"Again some driver bugfixes and some documentation fixes"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: i2c-qcom-geni: Fix DMA transfer race
i2c: rcar: always clear ICSAR to avoid side effects
MAINTAINERS: i2c: at91: handover maintenance to Codrin Ciubotariu
i2c: drop duplicated word in the header file
i2c: cadence: Clear HOLD bit at correct time in Rx path
Revert "i2c: cadence: Fix the hold bit setting"
amdgpu:
- Fix crash when overclocking VegaM
- Fix possible crash when editing dpm levels
sun4i:
- Fix inverted HPD result; fixes an earlier fix
lima:
- fix timeout during reset
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Merge tag 'drm-fixes-2020-07-24' of git://anongit.freedesktop.org/drm/drm into master
Pull drm fixes from Dave Airlie:
"Quiet fixes, I may have a single regression fix follow up to this for
nouveau, but it might be next week, Ben was testing it a bit more .
Otherwise two amdgpu fixes, one lima and one sun4i:
amdgpu:
- Fix crash when overclocking VegaM
- Fix possible crash when editing dpm levels
sun4i:
- Fix inverted HPD result; fixes an earlier fix
lima:
- fix timeout during reset"
* tag 'drm-fixes-2020-07-24' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: Fix NULL dereference in dpm sysfs handlers
drm/amd/powerplay: fix a crash when overclocking Vega M
drm/lima: fix wait pp reset timeout
drm: sun4i: hdmi: Fix inverted HPD result
The Low Power Audio subsystem clocks are required for Audio client
to be able to request for the clocks and power domains.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lore.kernel.org/r/1595606878-2664-5-git-send-email-tdas@codeaurora.org
[sboyd@kernel.org: Drop unused ret in probe function]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The LPASS(Low Power Audio Subsystem) clock provider have a bunch of generic
properties that are needed in a device tree. Also add clock ids for GCC
LPASS and LPASS Core clock IDs for LPASS client to request for the clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1595606878-2664-3-git-send-email-tdas@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the RETAIN_FF_ENABLE feature which enables the
usage of retention registers. These registers maintain their
state after disabling and re-enabling a GDSC.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lore.kernel.org/r/1595606878-2664-2-git-send-email-tdas@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Nnothing uses the enum name, so this is harmless.
Fixes: 3226944124 ("IB/mlx5: Introduce driver create and destroy flow methods")
Link: https://lore.kernel.org/r/20200724084112.GC31930@amd
Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The first member of drm_display_mode is no longer a structure, but
the code is still using {{0}} to zero initialize it. Make that just
{} so it works regardless of what lies inside.
Cc: Dave Airlie <airlied@redhat.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Fixes: 42acb06b01 ("drm: pahole struct drm_display_mode")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200724190718.23567-1-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch.ch>
Fix reported by kbuild warning.
drivers/infiniband/core/uverbs_cmd.c:1897:47: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
^
Link: https://lore.kernel.org/r/20200720175627.1273096-3-leon@kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The kbuild reported the following warning, so clean whole uverbs_cmd.c
file.
drivers/infiniband/core/uverbs_cmd.c:1066:6: warning: Variable 'ret' is reassigned a value before the old one has been used. [redundantAssignment]
ret = uverbs_request(attrs, &cmd, sizeof(cmd));
^
drivers/infiniband/core/uverbs_cmd.c:1064:0: note: Variable 'ret' is reassigned a value before the old one has been used.
int ret = -EINVAL;
^
Link: https://lore.kernel.org/r/20200720175627.1273096-2-leon@kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This manually reverts commit d1d84bb953.
The only user has gone two years ago with commit 589edb56b4 ("ACPI /
scan: Create platform device for INT33FE ACPI nodes") and no new user
has showed up. Remove and hope we will never need it again.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
- new board: WeTek Core2
- audio playback support on more boards
- add GPU DVFS
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Merge tag 'amlogic-dt64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into arm/dt
arm64: dts: amlogic: updates for v5.9 (round 2)
- new board: WeTek Core2
- audio playback support on more boards
- add GPU DVFS
* tag 'amlogic-dt64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
arm64: dts: amlogic: meson-g12: add the Mali OPP table and use DVFS
arm64: dts: amlogic: meson-gxm: add the Mali OPP table and use DVFS
arm64: dts: amlogic: meson-gx: add the Mali-450 OPP table and use DVFS
arm64: dts: meson: add support for the WeTek Core 2
dt-bindings: arm: amlogic: add support for the WeTek Core 2
arm64: dts: meson: add audio playback to khadas-vim3l
arm64: dts: meson: add audio playback to odroid-c4
arm64: dts: meson: update spifc node name on Khadas VIM3/VIM3L
ARM: dts: meson: Align L2 cache-controller nodename with dtschema
arm64: dts: meson-gxl-s805x: reduce initial Mali450 core frequency
arm64: dts: meson: add missing gxl rng clock
soc: amlogic: meson-gx-socinfo: Fix S905X3 and S905D3 ID's
Link: https://lore.kernel.org/r/7h8sf8671u.fsf@baylibre.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Commit ed66f991bb ("module: Refactor section attr into bin attribute")
removed the 'name' field from 'struct module_sect_attr' triggering the
following error when invoking lx-symbols:
(gdb) lx-symbols
loading vmlinux
scanning for modules in linux/build
loading @0xffffffffc014f000: linux/build/drivers/net/tun.ko
Python Exception <class 'gdb.error'> There is no member named name.:
Error occurred in Python: There is no member named name.
This patch fixes the issue taking the module name from the 'struct
attribute'.
Fixes: ed66f991bb ("module: Refactor section attr into bin attribute")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Kieran Bingham <kbingham@kernel.org>
Link: http://lkml.kernel.org/r/20200722102239.313231-1-sgarzare@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
To link KCOV to the kasan-dev@ mailing list.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Link: http://lkml.kernel.org/r/5fa344db7ac4af2213049e5656c0f43d6ecaa379.1595331682.git.andreyknvl@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The !ATOMIC_IOMAP version of io_maping_init_wc will always return
success, even when the ioremap fails.
Since the ATOMIC_IOMAP version returns NULL when the init fails, and
callers check for a NULL return on error this is unexpected.
During a device probe, where the ioremap failed, a crash can look like
this:
BUG: unable to handle page fault for address: 0000000000210000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
Oops: 0002 [#1] PREEMPT SMP
CPU: 0 PID: 177 Comm:
RIP: 0010:fill_page_dma [i915]
gen8_ppgtt_create [i915]
i915_ppgtt_create [i915]
intel_gt_init [i915]
i915_gem_init [i915]
i915_driver_probe [i915]
pci_device_probe
really_probe
driver_probe_device
The remap failure occurred much earlier in the probe. If it had been
propagated, the driver would have exited with an error.
Return NULL on ioremap failure.
[akpm@linux-foundation.org: detect ioremap_wc() errors earlier]
Fixes: cafaf14a5d ("io-mapping: Always create a struct to hold metadata about the io-mapping")
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200721171936.81563-1-michael.j.ruhl@intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently the basepath is removed only from the beginning of the string.
When the symbol is inlined and there's multiple line outputs of
addr2line, only the first line would have basepath removed.
Change to remove the basepath prefix from all lines.
Fixes: 31013836a7 ("scripts/decode_stacktrace: match basepath using shell prefix operator, not regex")
Co-developed-by: Shik Chen <shik@chromium.org>
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Signed-off-by: Shik Chen <shik@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Nicolas Boichat <drinkcat@chromium.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Link: http://lkml.kernel.org/r/20200720082709.252805-1-pihsun@chromium.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is a regression introduced by the "migrate from ll_rw_block usage
to BIO" patch.
Squashfs packs structures on byte boundaries, and due to that the length
field (of the metadata block) may not be fully in the current block.
The new code rewrote and introduced a faulty check for that edge case.
Fixes: 93e72b3c61 ("squashfs: migrate from ll_rw_block usage to BIO")
Reported-by: Bernd Amend <bernd.amend@gmail.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Adrien Schildknecht <adrien+dev@schischi.me>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Daniel Rosenberg <drosen@google.com>
Link: http://lkml.kernel.org/r/20200717195536.16069-1-phillip@squashfs.org.uk
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add an entry to correct my email addresses.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200708095414.12275-1-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
khugepaged has to drop mmap lock several times while collapsing a page.
The situation can change while the lock is dropped and we need to
re-validate that the VMA is still in place and the PMD is still subject
for collapse.
But we miss one corner case: while collapsing an anonymous pages the VMA
could be replaced with file VMA. If the file VMA doesn't have any
private pages we get NULL pointer dereference:
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
anon_vma_lock_write include/linux/rmap.h:120 [inline]
collapse_huge_page mm/khugepaged.c:1110 [inline]
khugepaged_scan_pmd mm/khugepaged.c:1349 [inline]
khugepaged_scan_mm_slot mm/khugepaged.c:2110 [inline]
khugepaged_do_scan mm/khugepaged.c:2193 [inline]
khugepaged+0x3bba/0x5a10 mm/khugepaged.c:2238
The fix is to make sure that the VMA is anonymous in
hugepage_vma_revalidate(). The helper is only used for collapsing
anonymous pages.
Fixes: 99cb0dbd47 ("mm,thp: add read-only THP support for (non-shmem) FS")
Reported-by: syzbot+ed318e8b790ca72c5ad0@syzkaller.appspotmail.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200722121439.44328-1-kirill.shutemov@linux.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hugetlb_cma[0] can be NULL due to various reasons, for example, node0
has no memory. so NULL hugetlb_cma[0] doesn't necessarily mean cma is
not enabled. gigantic pages might have been reserved on other nodes.
This patch fixes possible double reservation and CMA leak.
[akpm@linux-foundation.org: fix CONFIG_CMA=n warning]
[sfr@canb.auug.org.au: better checks before using hugetlb_cma]
Link: http://lkml.kernel.org/r/20200721205716.6dbaa56b@canb.auug.org.au
Fixes: cf11e85fc0 ("mm: hugetlb: optionally allocate gigantic hugepages using cma")
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Roman Gushchin <guro@fb.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200710005726.36068-1-song.bao.hua@hisilicon.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jens Axboe