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The highmem flag is used for allocating pages for compression and for
raid56 pages. The high memory makes sense on 32bit systems but is not
without problems. On 64bit system's it's just another layer of wrappers.
The time the pages are allocated for compression or raid56 is relatively
short (about a transaction commit), so the pages are not blocked
indefinitely. As the number of pages depends on the amount of data being
written/read, there's a theoretical problem. A fast device on a 32bit
system could use most of the low memory pool, while with the highmem
allocation that would not happen. This was possibly the original idea
long time ago, but nowadays we optimize for 64bit systems.
This patch removes all usage of the __GFP_HIGHMEM flag for page
allocation, the kmap/kunmap are still in place and will be removed in
followup patches. Remaining is masking out the bit in
alloc_extent_state and __lookup_free_space_inode, that can safely stay.
Signed-off-by: David Sterba <dsterba@suse.com>
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Drop variable 'devices' (used only once) and add new variable for
the fs_devices, so it is used at two locations within btrfs_trim_fs()
function and also helps to access fs_devices->devices.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Both callers use btrfs_header_nritems to feed the max argument. Remove
the argument and let generic_bin_search call it itself.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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One of the final things that must be done to add a new chunk is
inserting its device extent items in the device tree. They describe
the portion of allocated device physical space during phase 1 of
chunk allocation. This is currently done in btrfs_finish_chunk_alloc
whose name isn't very informative. What's more, this function is only
used in block-group.c but is defined as public. There isn't anything
special about it that would warrant it being defined in volumes.c.
Just move btrfs_finish_chunk_alloc and alloc_chunk_dev_extent to
block-group.c, make the former static and rename both functions to
insert_dev_extents and insert_dev_extent respectively.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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The function prototypes below aren't necessary as the functions are
first defined before called. Remove them.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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On 64K pages the size of the extent_buffer::pages array is 1 and
compilation with -Warray-bounds warns due to
kaddr = page_address(eb->pages[idx + 1]);
when reading byte range crossing page boundary.
This does never actually overflow the array because on 64K because all
the data fit in one page and bounds are checked by check_setget_bounds.
To fix the reported overflows and warnings add a compile-time condition
that will allow compiler to eliminate the dead code that reads from the
idx + 1 page.
Link: https://lore.kernel.org/lkml/20210623083901.1d49d19d@canb.auug.org.au/
CC: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David Sterba <dsterba@suse.com>
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There used to be a patch in the original series for zoned support which
limited the extent size to max_zone_append_size, but this patch has been
dropped somewhere around v9.
We've decided to go the opposite direction, instead of limiting extents
in the first place we split them before submission to comply with the
device's limits.
Remove the related code, btrfs_fs_info::max_zone_append_size and
btrfs_zoned_device_info::max_zone_append_size.
This also removes the workaround for dm-crypt introduced in
1d68128c107a ("btrfs: zoned: fail mount if the device does not support
zone append") because the fix has been merged as f34ee1dce642 ("dm
crypt: Fix zoned block device support").
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix random crashes on some 32-bit CPUs by adding isync() after
locking/unlocking KUEP
- Fix intermittent crashes when loading modules with strict module RWX
- Fix a section mismatch introduce by a previous fix.
Thanks to Christophe Leroy, Fabiano Rosas, Laurent Vivier, Murilo
Opsfelder Araújo, Nathan Chancellor, and Stan Johnson.
h# -----BEGIN PGP SIGNATURE-----
* tag 'powerpc-5.14-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm: Fix set_memory_*() against concurrent accesses
powerpc/32s: Fix random crashes by adding isync() after locking/unlocking KUEP
powerpc/xive: Do not mark xive_request_ipi() as __init
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk driver fixes from Stephen Boyd:
- Make the regulator state match the GDSC power domain state at boot on
Qualcomm SoCs so that the regulator isn't turned off inadvertently.
- Fix earlycon on i.MX6Q SoCs
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: qcom: gdsc: Ensure regulator init state matches GDSC state
clk: imx6q: fix uart earlycon unwork
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small driver fixes for 5.14-rc7.
They consist of:
- revert for an interconnect patch that was found to have problems
- ipack tpci200 driver fixes for reported problems
- slimbus messaging and ngd fixes for reported problems
All are small and have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
ipack: tpci200: fix memory leak in the tpci200_register
ipack: tpci200: fix many double free issues in tpci200_pci_probe
slimbus: ngd: reset dma setup during runtime pm
slimbus: ngd: set correct device for pm
slimbus: messaging: check for valid transaction id
slimbus: messaging: start transaction ids from 1 instead of zero
Revert "interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate"
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH:
"Here is a single USB typec tcpm fix for a reported problem for
5.14-rc7. It showed up in 5.13 and resolves an issue that Hans found.
It has been in linux-next this week with no reported problems"
* tag 'usb-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tcpm: Fix VDMs sometimes not being forwarded to alt-mode drivers
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- fix the sifive-l2-cache device tree bindings for json-schema
compatibility. This does not change the intended behavior of the
binding.
- avoid improperly freeing necessary resources during early boot.
* tag 'riscv-for-linus-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Fix a number of free'd resources in init_resources()
dt-bindings: sifive-l2-cache: Fix 'select' matching
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fix from Vasily Gorbik:
- fix use after free of zpci_dev in pci code
* tag 's390-5.14-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pci: fix use after free of zpci_dev
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git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull mandatory file locking deprecation warning from Jeff Layton:
"As discussed on the list, this patch just adds a new warning for folks
who still have mandatory locking enabled and actually mount with '-o
mand'. I'd like to get this in for v5.14 so we can push this out into
stable kernels and hopefully reach folks who have mounts with -o mand.
For now, I'm operating under the assumption that we'll fully remove
this support in v5.15, but we can move that out if any legitimate
users of this facility speak up between now and then"
* tag 'locks-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
fs: warn about impending deprecation of mandatory locks
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Pull block fixes from Jens Axboe:
"Three fixes from Ming Lei that should go into 5.14:
- Fix for a kernel panic when iterating over tags for some cases
where a flush request is present, a regression in this cycle.
- Request timeout fix
- Fix flush request checking"
* tag 'block-5.14-2021-08-20' of git://git.kernel.dk/linux-block:
blk-mq: fix is_flush_rq
blk-mq: fix kernel panic during iterating over flush request
blk-mq: don't grab rq's refcount in blk_mq_check_expired()
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Pull io_uring fixes from Jens Axboe:
"A few small fixes that should go into this release:
- Fix never re-assigning an initial error value for io_uring_enter()
for SQPOLL, if asked to do nothing
- Fix xa_alloc_cycle() return value checking, for cases where we have
wrapped around
- Fix for a ctx pin issue introduced in this cycle (Pavel)"
* tag 'io_uring-5.14-2021-08-20' of git://git.kernel.dk/linux-block:
io_uring: fix xa_alloc_cycle() error return value check
io_uring: pin ctx on fallback execution
io_uring: only assign io_uring_enter() SQPOLL error in actual error case
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We've had CONFIG_MANDATORY_FILE_LOCKING since 2015 and a lot of distros
have disabled it. Warn the stragglers that still use "-o mand" that
we'll be dropping support for that mount option.
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
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We currently check for ret != 0 to indicate error, but '1' is a valid
return and just indicates that the allocation succeeded with a wrap.
Correct the check to be for < 0, like it was before the xarray
conversion.
Cc: stable@vger.kernel.org
Fixes: 61cf93700fe6 ("io_uring: Convert personality_idr to XArray")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix two mistakes in new code.
Specifics:
- Prevent confusing messages from being printed if the PRMT table is
not present or there are no PRM modules (Aubrey Li).
- Fix the handling of suspend-to-idle entry and exit in the case when
the Microsoft UUID is used with the Low-Power S0 Idle _DSM
interface (Mario Limonciello)"
* tag 'acpi-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: PM: s2idle: Invert Microsoft UUID entry and exit
ACPI: PRM: Deal with table not present or no module found
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix some issues in the ARM cpufreq drivers and in the operating
performance points (OPP) framework.
Specifics:
- Fix useless WARN() in the OPP core and prevent a noisy warning
from being printed by OPP _put functions (Dmitry Osipenko).
- Fix error path when allocation failed in the arm_scmi cpufreq
driver (Lukasz Luba).
- Blacklist Qualcomm sc8180x and Qualcomm sm8150 in
cpufreq-dt-platdev (Bjorn Andersson, Thara Gopinath).
- Forbid cpufreq for 1.2 GHz variant in the armada-37xx cpufreq
driver (Marek Behún)"
* tag 'pm-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
opp: Drop empty-table checks from _put functions
cpufreq: armada-37xx: forbid cpufreq for 1.2 GHz variant
cpufreq: blocklist Qualcomm sm8150 in cpufreq-dt-platdev
cpufreq: arm_scmi: Fix error path when allocation failed
opp: remove WARN when no valid OPPs remain
cpufreq: blacklist Qualcomm sc8180x in cpufreq-dt-platdev
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Merge misc fixes from Andrew Morton:
"10 patches.
Subsystems affected by this patch series: MAINTAINERS and mm (shmem,
pagealloc, tracing, memcg, memory-failure, vmscan, kfence, and
hugetlb)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
hugetlb: don't pass page cache pages to restore_reserve_on_error
kfence: fix is_kfence_address() for addresses below KFENCE_POOL_SIZE
mm: vmscan: fix missing psi annotation for node_reclaim()
mm/hwpoison: retry with shake_page() for unhandlable pages
mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim
MAINTAINERS: update ClangBuiltLinux IRC chat
mmflags.h: add missing __GFP_ZEROTAGS and __GFP_SKIP_KASAN_POISON names
mm/page_alloc: don't corrupt pcppage_migratetype
Revert "mm: swap: check if swap backing device is congested or not"
Revert "mm/shmem: fix shmem_swapin() race with swapoff"
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Pull drm fixes from Dave Airlie:
"Regularly scheduled fixes. The ttm one solves a problem of GPU drivers
failing to load if debugfs is off in Kconfig, otherwise the i915 and
mediatek, and amdgpu fixes all fairly normal.
Nouveau has a couple of display fixes, but it has a fix for a
longstanding race condition in it's memory manager code, and the fix
mostly removes some code that wasn't working properly and has no
userspace users. This fix makes the diffstat kinda larger but in a
good (negative line-count) way.
core:
- fix drm_wait_vblank uapi copying bug
ttm:
- fix debugfs init when debugfs is off
amdgpu:
- vega10 SMU workload fix
- DCN VM fix
- DCN 3.01 watermark fix
amdkfd:
- SVM fix
nouveau:
- ampere display fixes
- remove MM misfeature to fix a longstanding race condition
i915:
- tweaked display workaround for all PCHs
- eDP MSO pipe sanity for ADL-P fix
- remove unused symbol export
mediatek:
- AAL output size setting
- Delete component in remove function"
* tag 'drm-fixes-2021-08-20-3' of git://anongit.freedesktop.org/drm/drm:
drm/amd/display: Use DCN30 watermark calc for DCN301
drm/i915/dp: remove superfluous EXPORT_SYMBOL()
drm/i915/edp: fix eDP MSO pipe sanity checks for ADL-P
drm/i915: Tweaked Wa_14010685332 for all PCHs
drm/nouveau: rip out nvkm_client.super
drm/nouveau: block a bunch of classes from userspace
drm/nouveau/fifo/nv50-: rip out dma channels
drm/nouveau/kms/nv50: workaround EFI GOP window channel format differences
drm/nouveau/disp: power down unused DP links during init
drm/nouveau: recognise GA107
drm: Copy drm_wait_vblank to user before returning
drm/amd/display: Ensure DCN save after VM setup
drm/amdkfd: fix random KFDSVMRangeTest.SetGetAttributesTest test failure
drm/amd/pm: change the workload type for some cards
Revert "drm/amd/pm: fix workload mismatch on vega10"
drm: ttm: Don't bail from ttm_global_init if debugfs_create_dir fails
drm/mediatek: Add component_del in OVL and COLOR remove function
drm/mediatek: Add AAL output size configuration
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- Add Rahul Tanwar as Intel LGM Gateway PCIe maintainer (Rahul Tanwar)
- Add Jim Quinlan et al as Broadcom STB PCIe maintainers (Jim Quinlan)
- Increase D3hot-to-D0 delay for AMD Renoir/Cezanne XHCI (Marcin
Bachry)
- Correct iomem_get_mapping() usage for legacy_mem sysfs (Krzysztof
Wilczyński)
* tag 'pci-v5.14-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI/sysfs: Use correct variable for the legacy_mem sysfs object
PCI: Increase D3 delay for AMD Renoir/Cezanne XHCI
MAINTAINERS: Add Jim Quinlan et al as Broadcom STB PCIe maintainers
MAINTAINERS: Add Rahul Tanwar as Intel LGM Gateway PCIe maintainer
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC host fixes from Ulf Hansson:
- dw_mmc: Fix hang on data CRC error
- mmci: Fix voltage switch procedure for the stm32 variant
- sdhci-iproc: Fix some clock issues for BCM2711
- sdhci-msm: Fixup software timeout value
* tag 'mmc-v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-iproc: Set SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN on BCM2711
mmc: sdhci-iproc: Cap min clock frequency on BCM2711
mmc: sdhci-msm: Update the software timeout value for sdhc
mmc: mmci: stm32: Check when the voltage switch procedure should be done
mmc: dw_mmc: Fix hang on data CRC error
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull more sound fixes from Takashi Iwai:
"This is a quick follow up for 5.14: a fix for a very recently
introduced regression on ASoC Intel Atom driver, and another trivial
HD-audio quirk for HP laptops"
* tag 'sound-5.14-rc7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: intel: atom: Fix breakage for PCM buffer address setup
ALSA: hda/realtek: Limit mic boost on HP ProBook 445 G8
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
- Fix cleaning of vDSO directories
- Ensure CNTHCTL_EL2 is fully initialised when booting at EL2
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: initialize all of CNTHCTL_EL2
arm64: clean vdso & vdso32 files
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* acpi-pm:
ACPI: PM: s2idle: Invert Microsoft UUID entry and exit
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Fix for a potential NULL-ptr dereference in IOMMU core code
- Two resource leak fixes
- Cache flush fix in the Intel VT-d driver
* tag 'iommu-fixes-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Fix incomplete cache flush in intel_pasid_tear_down_entry()
iommu/vt-d: Fix PASID reference leak
iommu: Check if group is NULL before remove device
iommu/dma: Fix leak in non-contiguous API
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* pm-opp:
opp: Drop empty-table checks from _put functions
opp: remove WARN when no valid OPPs remain
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syzbot hit kernel BUG at fs/hugetlbfs/inode.c:532 as described in [1].
This BUG triggers if the HPageRestoreReserve flag is set on a page in
the page cache. It should never be set, as the routine
huge_add_to_page_cache explicitly clears the flag after adding a page to
the cache.
The only code other than huge page allocation which sets the flag is
restore_reserve_on_error. It will potentially set the flag in rare out
of memory conditions. syzbot was injecting errors to cause memory
allocation errors which exercised this specific path.
The code in restore_reserve_on_error is doing the right thing. However,
there are instances where pages in the page cache were being passed to
restore_reserve_on_error. This is incorrect, as once a page goes into
the cache reservation information will not be modified for the page
until it is removed from the cache. Error paths do not remove pages
from the cache, so even in the case of error, the page will remain in
the cache and no reservation adjustment is needed.
Modify routines that potentially call restore_reserve_on_error with a
page cache page to no longer do so.
Note on fixes tag: Prior to commit 846be08578ed ("mm/hugetlb: expand
restore_reserve_on_error functionality") the routine would not process
page cache pages because the HPageRestoreReserve flag is not set on such
pages. Therefore, this issue could not be trigggered. The code added
by commit 846be08578ed ("mm/hugetlb: expand restore_reserve_on_error
functionality") is needed and correct. It exposed incorrect calls to
restore_reserve_on_error which is the root cause addressed by this
commit.
[1] https://lore.kernel.org/linux-mm/00000000000050776d05c9b7c7f0@google.com/
Link: https://lkml.kernel.org/r/20210818213304.37038-1-mike.kravetz@oracle.com
Fixes: 846be08578ed ("mm/hugetlb: expand restore_reserve_on_error functionality")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: <syzbot+67654e51e54455f1c585@syzkaller.appspotmail.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Originally the addr != NULL check was meant to take care of the case
where __kfence_pool == NULL (KFENCE is disabled). However, this does
not work for addresses where addr > 0 && addr < KFENCE_POOL_SIZE.
This can be the case on NULL-deref where addr > 0 && addr < PAGE_SIZE or
any other faulting access with addr < KFENCE_POOL_SIZE. While the
kernel would likely crash, the stack traces and report might be
confusing due to double faults upon KFENCE's attempt to unprotect such
an address.
Fix it by just checking that __kfence_pool != NULL instead.
Link: https://lkml.kernel.org/r/20210818130300.2482437-1-elver@google.com
Fixes: 0ce20dd84089 ("mm: add Kernel Electric-Fence infrastructure")
Signed-off-by: Marco Elver <elver@google.com>
Reported-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Acked-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org> [5.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In a debugging session the other day, Rik noticed that node_reclaim()
was missing memstall annotations. This means we'll miss pressure and
lost productivity resulting from reclaim on an overloaded local NUMA
node when vm.zone_reclaim_mode is enabled.
There haven't been any reports, but that's likely because
vm.zone_reclaim_mode hasn't been a commonly used feature recently, and
the intersection between such setups and psi users is probably nil.
But secondary memory such as CXL-connected DIMMS, persistent memory etc,
and the page demotion patches that handle them
(https://lore.kernel.org/lkml/20210401183216.443C4443@viggo.jf.intel.com/)
could soon make this a more common codepath again.
Link: https://lkml.kernel.org/r/20210818152457.35846-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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HWPoisonHandlable() sometimes returns false for typical user pages due
to races with average memory events like transfers over LRU lists. This
causes failures in hwpoison handling.
There's retry code for such a case but does not work because the retry
loop reaches the retry limit too quickly before the page settles down to
handlable state. Let get_any_page() call shake_page() to fix it.
[naoya.horiguchi@nec.com: get_any_page(): return -EIO when retry limit reached]
Link: https://lkml.kernel.org/r/20210819001958.2365157-1-naoya.horiguchi@linux.dev
Link: https://lkml.kernel.org/r/20210817053703.2267588-1-naoya.horiguchi@linux.dev
Fixes: 25182f05ffed ("mm,hwpoison: fix race with hugetlb page allocation")
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reported-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org> [5.13+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We've noticed occasional OOM killing when memory.low settings are in
effect for cgroups. This is unexpected and undesirable as memory.low is
supposed to express non-OOMing memory priorities between cgroups.
The reason for this is proportional memory.low reclaim. When cgroups
are below their memory.low threshold, reclaim passes them over in the
first round, and then retries if it couldn't find pages anywhere else.
But when cgroups are slightly above their memory.low setting, page scan
force is scaled down and diminished in proportion to the overage, to the
point where it can cause reclaim to fail as well - only in that case we
currently don't retry, and instead trigger OOM.
To fix this, hook proportional reclaim into the same retry logic we have
in place for when cgroups are skipped entirely. This way if reclaim
fails and some cgroups were scanned with diminished pressure, we'll try
another full-force cycle before giving up and OOMing.
[akpm@linux-foundation.org: coding-style fixes]
Link: https://lkml.kernel.org/r/20210817180506.220056-1-hannes@cmpxchg.org
Fixes: 9783aa9917f8 ("mm, memcg: proportional memory.{low,min} reclaim")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Leon Yang <lnyng@fb.com>
Reviewed-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Chris Down <chris@chrisdown.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org> [5.4+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Everyone has moved from Freenode to Libera so updated the channel entry
for MAINTAINERS.
Link: https://github.com/ClangBuiltLinux/linux/issues/1402
Link: https://lkml.kernel.org/r/20210818022339.3863058-1-nathan@kernel.org
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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printk("%pGg") outputs these two flags as hexadecimal number, rather
than as a string, e.g:
GFP_KERNEL|0x1800000
Fix this by adding missing names of __GFP_ZEROTAGS and
__GFP_SKIP_KASAN_POISON flags to __def_gfpflag_names.
Link: https://lkml.kernel.org/r/20210816133502.590-1-rppt@kernel.org
Fixes: 013bb59dbb7c ("arm64: mte: handle tags zeroing at page allocation time")
Fixes: c275c5c6d50a ("kasan: disable freed user page poisoning with HW tags")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When placing pages on a pcp list, migratetype values over
MIGRATE_PCPTYPES get added to the MIGRATE_MOVABLE pcp list.
However, the actual migratetype is preserved in the page and should
not be changed to MIGRATE_MOVABLE or the page may end up on the wrong
free_list.
The impact is that HIGHATOMIC or CMA pages getting bulk freed from the
PCP lists could potentially end up on the wrong buddy list. There are
various consequences but minimally NR_FREE_CMA_PAGES accounting could
get screwed up.
[mgorman@techsingularity.net: changelog update]
Link: https://lkml.kernel.org/r/20210811182917.2607994-1-opendmb@gmail.com
Fixes: df1acc856923 ("mm/page_alloc: avoid conflating IRQs disabled with zone->lock")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: "Peter Zijlstra (Intel)" <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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Due to the change about how block layer detects congestion the
justification of commit 8fd2e0b505d1 ("mm: swap: check if swap backing
device is congested or not") doesn't stand anymore, so the commit could
be just reverted in order to solve the race reported by commit
2efa33fc7f6e ("mm/shmem: fix shmem_swapin() race with swapoff"). The
fix was reverted by the previous patch.
Link: https://lkml.kernel.org/r/20210810202936.2672-3-shy828301@gmail.com
Signed-off-by: Yang Shi <shy828301@gmail.com>
Suggested-by: Hugh Dickins <hughd@google.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Due to the change about how block layer detects congestion the
justification of commit 8fd2e0b505d1 ("mm: swap: check if swap backing
device is congested or not") doesn't stand anymore, so the commit could
be just reverted in order to solve the race reported by commit
2efa33fc7f6e ("mm/shmem: fix shmem_swapin() race with swapoff"), so the
fix commit could be just reverted as well.
And that fix is also kind of buggy as discussed by [1] and [2].
[1] https://lore.kernel.org/linux-mm/24187e5e-069-9f3f-cefe-39ac70783753@google.com/
[2] https://lore.kernel.org/linux-mm/e82380b9-3ad4-4a52-be50-6d45c7f2b5da@google.com/
Link: https://lkml.kernel.org/r/20210810202936.2672-2-shy828301@gmail.com
Signed-off-by: Yang Shi <shy828301@gmail.com>
Suggested-by: Hugh Dickins <hughd@google.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Function init_resources() allocates a boot memory block to hold an array of
resources which it adds to iomem_resource. The array is filled in from its
end and the function then attempts to free any unused memory at the
beginning. The problem is that size of the unused memory is incorrectly
calculated and this can result in releasing memory which is in use by
active resources. Their data then gets corrupted later when the memory is
reused by a different part of the system.
Fix the size of the released memory to correctly match the number of unused
resource entries.
Fixes: ffe0e5261268 ("RISC-V: Improve init_resources()")
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Nick Kossifidis <mick@ics.forth.gr>
Tested-by: Sunil V L <sunilvl@ventanamicro.com>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.14-2021-08-18:
amdgpu:
- vega10 SMU workload fix
- DCN VM fix
- DCN 3.01 watermark fix
amdkfd:
- SVM fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210818225137.4070-1-alexander.deucher@amd.com
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When the schema fixups are applied to 'select' the result is a single
entry is required for a match, but that will never match as there should
be 2 entries. Also, a 'select' schema should have the widest possible
match, so use 'contains' which matches the compatible string(s) in any
position and not just the first position.
Fixes: 993dcfac64eb ("dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema")
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-fixes
Mediatek DRM Fixes for Linux 5.14-2
1. Fix AAL output size setting.
2. Delete component in remove function.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210819001635.14803-1-chunkuang.hu@kernel.org
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git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Expand a tweaked display workaround for all PCHs. (Anshuman)
- Fix eDP MSO pipe sanity checks for ADL-P. (Jani)
- Remove superfluous EXPORT_SYMBOL(). (Jani)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YR137zkSAIbun1Ed@intel.com
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- Ampere display fixes
- Fix longstanding MM race issue by removing unused code.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv5jtUFkHsGe-pf-=RceDOgKygjPnCi=6d5vCLM_f5aeMQ@mail.gmail.com
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"Not much to see here. Half the fixes this time are for Qualcomm dts
files, fixing small mistakes on certain machines. The other fixes are:
- A 5.13 regression fix for freescale QE interrupt controller\
- A fix for TI OMAP gpt12 timer error handling
- A randconfig build regression fix for ixp4xx
- Another defconfig fix following the CONFIG_FB dependency rework"
* tag 'soc-fixes-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
soc: fsl: qe: fix static checker warning
ARM: ixp4xx: fix building both pci drivers
ARM: configs: Update the nhk8815_defconfig
bus: ti-sysc: Fix error handling for sysc_check_active_timer()
soc: fsl: qe: convert QE interrupt controller to platform_device
arm64: dts: qcom: sdm845-oneplus: fix reserved-mem
arm64: dts: qcom: msm8994-angler: Disable cont_splash_mem
arm64: dts: qcom: sc7280: Fixup cpufreq domain info for cpu7
arm64: dts: qcom: msm8992-bullhead: Fix cont_splash_mem mapping
arm64: dts: qcom: msm8992-bullhead: Remove PSCI
arm64: dts: qcom: c630: fix correct powerdown pin for WSA881x
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Short summary of fixes pull:
* UAPI: Return results for failed drm_wait_vblank_ioctl()
* ttm: Fix debugfs initialization
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YR1c7cG1IaL+g8EN@linux-uq9g.fritz.box
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from bpf, wireless and mac80211
trees.
Current release - regressions:
- tipc: call tipc_wait_for_connect only when dlen is not 0
- mac80211: fix locking in ieee80211_restart_work()
Current release - new code bugs:
- bpf: add rcu_read_lock in bpf_get_current_[ancestor_]cgroup_id()
- ethernet: ice: fix perout start time rounding
- wwan: iosm: prevent underflow in ipc_chnl_cfg_get()
Previous releases - regressions:
- bpf: clear zext_dst of dead insns
- sch_cake: fix srchost/dsthost hashing mode
- vrf: reset skb conntrack connection on VRF rcv
- net/rds: dma_map_sg is entitled to merge entries
Previous releases - always broken:
- ethernet: bnxt: fix Tx path locking and races, add Rx path
barriers"
* tag 'net-5.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (42 commits)
net: dpaa2-switch: disable the control interface on error path
Revert "flow_offload: action should not be NULL when it is referenced"
iavf: Fix ping is lost after untrusted VF had tried to change MAC
i40e: Fix ATR queue selection
r8152: fix the maximum number of PLA bp for RTL8153C
r8152: fix writing USB_BP2_EN
mptcp: full fully established support after ADD_ADDR
mptcp: fix memory leak on address flush
net/rds: dma_map_sg is entitled to merge entries
net: mscc: ocelot: allow forwarding from bridge ports to the tag_8021q CPU port
net: asix: fix uninit value bugs
ovs: clear skb->tstamp in forwarding path
net: mdio-mux: Handle -EPROBE_DEFER correctly
net: mdio-mux: Don't ignore memory allocation errors
net: mdio-mux: Delete unnecessary devm_kfree
net: dsa: sja1105: fix use-after-free after calling of_find_compatible_node, or worse
sch_cake: fix srchost/dsthost hashing mode
ixgbe, xsk: clean up the resources in ixgbe_xsk_pool_enable error path
net: qlcnic: add missed unlock in qlcnic_83xx_flash_read32
mac80211: fix locking in ieee80211_restart_work()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
- Enable SW_TABLET_MODE support for the TP200s
- Enable WMI on two more Gigabyte motherboards
* tag 'platform-drivers-x86-v5.14-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: gigabyte-wmi: add support for B450M S2H V2
platform/x86: gigabyte-wmi: add support for X570 GAMING X
platform/x86: asus-nb-wmi: Add tablet_mode_sw=lid-flip quirk for the TP200s
platform/x86: asus-nb-wmi: Allow configuring SW_TABLET_MODE method with a module option
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David Sterba
Anand Jain
Marcos Paulo de Souza
Nikolay Borisov
Johannes Thumshirn
Linus Torvalds
Jeff Layton
Jens Axboe
Rafael J. Wysocki
Mike Kravetz
Marco Elver
Johannes Weiner
Naoya Horiguchi
Nathan Chancellor
Mike Rapoport
Doug Berger
Yang Shi
Petr Pavlu
Dave Airlie
Rob Herring
