If io_ring_exit_work() can't get it done in 5 minutes, something is
going very wrong, don't keep spinning at HZ / 20 rate, it doesn't help
and it may take much of CPU time if there is a lot of workers stuck as
such.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9e2d1ca81d569f6bc628af1a42ff6663bff7ce9c.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Turns out we always init struct io_wait_queue in io_cqring_wait(), even
if it's not used after, i.e. there are already enough of CQEs. And often
it's exactly what happens, for instance, requests may have been
completed inline, or in case of io_uring_enter(submit=N, wait=1).
It shows up in my profiler, so optimise it by delaying the struct init.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/6f1b81c60b947d165583dc333947869c3d85d037.1628471125.git.asml.silence@gmail.com
[axboe: fixed up for new cqring wait]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
IOPOLL users should care more about getting completions for requests
they submitted, but not in "device did/completed something". Currently,
io_do_iopoll() may return a positive number, which will instruct
io_iopoll_check() to break the loop and end the syscall, even if there
is not enough CQEs or none at all.
Don't return positive numbers, so io_iopoll_check() exits only when it
gets an actual error, need reschedule or got enough CQEs.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/641a88f751623b6758303b3171f0a4141f06726e.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We prefer nornal task_works even if it would fail requests inside. Kill
a PF_EXITING check in io_req_task_work_add(), task_work_add() handles
well dying tasks, i.e. return error when can't enqueue due to late
stages of do_exit().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/fc14297e8441cd8f5d1743a2488cf0df09bf48ac.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If we use fixed files, we can be sure (almost) that REQ_F_ISREG is set.
However, for non-reg files io_prep_rw() still will look into inode to
double check, and that's expensive and can be avoided.
The only caveat is that it only currently works with 64+ bit
architectures, see FFS_ISREG, so we should consider that.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0a62780c491ca2522cd52db4ae3f16e03aafed0f.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Optimise io_file_get() with registered files, which is in a hot path,
by inlining parts of the function. Saves a function call, and
inefficiencies of passing arguments, e.g. evaluating
(sqe_flags & IOSQE_FIXED_FILE).
It couldn't have been done before as compilers were refusing to inline
it because of the function size.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/52115cd6ce28f33bd0923149c0e6cb611084a0b1.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Instead of hand-coded two-level tables for registered files, allocate
them with kvmalloc(). In many cases small enough tables are enough, and
so can be kmalloc()'ed removing an extra memory load and a bunch of bit
logic instructions from the hot path. If the table is larger, we trade
off all the pros with a TLB-assisted memory lookup.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/280421d3b48775dabab773006bb5588c7b2dabc0.1628471125.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Currently we only wake the first waiter, even if we have enough entries
posted to satisfy multiple waiters. Improve that situation so that
every waiter knows how much the CQ tail has to advance before they can
be safely woken up.
With this change, if we have N waiters each asking for 1 event and we get
4 completions, then we wake up 4 waiters. If we have N waiters asking
for 2 completions and we get 4 completions, then we wake up the first
two. Previously, only the first waiter would've been woken up.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Daniel reports that the v5.14-rc4-rt4 kernel throws a BUG when running
stress-ng:
| [ 90.202543] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:35
| [ 90.202549] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 2047, name: iou-wrk-2041
| [ 90.202555] CPU: 5 PID: 2047 Comm: iou-wrk-2041 Tainted: G W 5.14.0-rc4-rt4+ #89
| [ 90.202559] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
| [ 90.202561] Call Trace:
| [ 90.202577] dump_stack_lvl+0x34/0x44
| [ 90.202584] ___might_sleep.cold+0x87/0x94
| [ 90.202588] rt_spin_lock+0x19/0x70
| [ 90.202593] ___slab_alloc+0xcb/0x7d0
| [ 90.202598] ? newidle_balance.constprop.0+0xf5/0x3b0
| [ 90.202603] ? dequeue_entity+0xc3/0x290
| [ 90.202605] ? io_wqe_dec_running.isra.0+0x98/0xe0
| [ 90.202610] ? pick_next_task_fair+0xb9/0x330
| [ 90.202612] ? __schedule+0x670/0x1410
| [ 90.202615] ? io_wqe_dec_running.isra.0+0x98/0xe0
| [ 90.202618] kmem_cache_alloc_trace+0x79/0x1f0
| [ 90.202621] io_wqe_dec_running.isra.0+0x98/0xe0
| [ 90.202625] io_wq_worker_sleeping+0x37/0x50
| [ 90.202628] schedule+0x30/0xd0
| [ 90.202630] schedule_timeout+0x8f/0x1a0
| [ 90.202634] ? __bpf_trace_tick_stop+0x10/0x10
| [ 90.202637] io_wqe_worker+0xfd/0x320
| [ 90.202641] ? finish_task_switch.isra.0+0xd3/0x290
| [ 90.202644] ? io_worker_handle_work+0x670/0x670
| [ 90.202646] ? io_worker_handle_work+0x670/0x670
| [ 90.202649] ret_from_fork+0x22/0x30
which is due to the RT kernel not liking a GFP_ATOMIC allocation inside
a raw spinlock. Besides that not working on RT, doing any kind of
allocation from inside schedule() is kind of nasty and should be avoided
if at all possible.
This particular path happens when an io-wq worker goes to sleep, and we
need a new worker to handle pending work. We currently allocate a small
data item to hold the information we need to create a new worker, but we
can instead include this data in the io_worker struct itself and just
protect it with a single bit lock. We only really need one per worker
anyway, as we will have run pending work between to sleep cycles.
https://lore.kernel.org/lkml/20210804082418.fbibprcwtzyt5qax@beryllium.lan/
Reported-by: Daniel Wagner <dwagner@suse.de>
Tested-by: Daniel Wagner <dwagner@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
- 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, Stan Johnson.
-----BEGIN PGP SIGNATURE-----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=K2B0
-----END PGP SIGNATURE-----
Merge tag 'powerpc-5.14-6' of 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
- 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
-----BEGIN PGP SIGNATURE-----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=EGjz
-----END PGP SIGNATURE-----
Merge tag 'clk-fixes-for-linus' of 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
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.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYSEfhw8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylxAQCfYvG2nCMkIvBi7MXNwRS0go5YJyAAn3RprTCU
V7dduATGH8zJ4u6AOdtg
=Uq3v
-----END PGP SIGNATURE-----
Merge tag 'char-misc-5.14-rc7' of 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"
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.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYSEgIQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymZpQCfeD9XR0ExAJgn7E0sNuLaOi2BxmUAn3Eu2IFu
dFcSEpQtg23mY6aBFWfH
=7kfD
-----END PGP SIGNATURE-----
Merge tag 'usb-5.14-rc7' of 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
* A fix to the sifive-l2-cache device tree bindings, for json-schema
compatibility. This does not change the intended behavior of the
binding.
* A fix to avoid improperly freeing necessary resources during early
boot.
-----BEGIN PGP SIGNATURE-----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=xEwN
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-5.14-rc7' of 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
- fix use after free of zpci_dev in pci code
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmEgv1cACgkQjYWKoQLX
FBgJ/gf+PXb5Eanf0xz/9u1q2c3wf1kVAbhr1vEiPQK3JCNyyN0ZDPq2IV27nipz
ivGc8kSFlu+G4/otNfbcWr8hswuLUvplV/E5xwTFCy//tIo7vMQDKGJ7Wkjy2Eql
agmUg6umZNL4ErA4CORQQpkW9S0PDmK0BDjbDM93EGiFskt1vu28asBOe3ulHQ6n
qH1ovvLLicB6wz5fJ1Ie3HRT+sQiyMBIIXBnSSt8eLqN4Wc+Nmv1J9I6+dLBWWVf
N3V4xAZBmJQKHKkMw0WRXs+pnT8H2X92x6sjuRLqU/PeVLQuw4opY6Rsmhm08iJC
boGZVuIVljed7d5xy3FTBrbzJ27beQ==
=nwyD
-----END PGP SIGNATURE-----
Merge tag 's390-5.14-5' of 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
-----BEGIN PGP SIGNATURE-----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=xZLO
-----END PGP SIGNATURE-----
Merge tag 'locks-v5.14' of 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
-----BEGIN PGP SIGNATURE-----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=DGKg
-----END PGP SIGNATURE-----
Merge tag 'block-5.14-2021-08-20' of git://git.kernel.dk/linux-block
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()
-----BEGIN PGP SIGNATURE-----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=/PEi
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.14-2021-08-20' of git://git.kernel.dk/linux-block
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
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>
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: 61cf93700f ("io_uring: Convert personality_idr to XArray")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
- 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).
-----BEGIN PGP SIGNATURE-----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=GBtH
-----END PGP SIGNATURE-----
Merge tag 'acpi-5.14-rc7' of 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
- Fix unuseful 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).
-----BEGIN PGP SIGNATURE-----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=lQtW
-----END PGP SIGNATURE-----
Merge tag 'pm-5.14-rc7' of 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
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
-----BEGIN PGP SIGNATURE-----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=7B9v
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2021-08-20-3' of git://anongit.freedesktop.org/drm/drm
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
- 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
-----BEGIN PGP SIGNATURE-----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=Y+uG
-----END PGP SIGNATURE-----
Merge tag 'mmc-v5.14-rc4' of 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
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.
-----BEGIN PGP SIGNATURE-----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=QNEK
-----END PGP SIGNATURE-----
Merge tag 'sound-5.14-rc7-2' of 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
- Fix cleaning of vDSO directories
- Ensure CNTHCTL_EL2 is fully initialised when booting at EL2
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmEfaiMQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjNKoTB/4tewUswzvvsZb24xanJWEdgo5g1+wuHi7Y
bo94+yqtPapGg/E1w00aQANqEq1z4XNt5/L9YBnFZd1xKeRbXBhZ77M4bgCuUCU5
uS+f0X90UsRz0PegLQapBWbDmyz0e6cz+2sxyCvJC6z9Wwoj4pE5qWmak1EZNFyS
FcXTyoDtBsJBtMoUVxs2awR7wpNRIA/hzbOodAP9AQyXm0OPSuJsc34gg/xmeO0D
PvUgBJY3RcjbutVBHpzMP/nGr0GM35rq3J0GSjlWTRd4TLZ/cCL1Lzvpgqx+/acR
LUC2+TTHaFQHjHu1f4tpuG+BbosLvC3nMpnIKQBtlQhNKMkNwuDv
=56Zn
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of 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
Including:
- Fix for a potential NULL-ptr dereference in IOMMU core code
- Two resource leak fixes
- Cache flush fix in the Intel VT-d driver
-----BEGIN PGP SIGNATURE-----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=Jnt4
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v5.14-rc6' of 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
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 846be08578 ("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 846be08578 ("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: 846be08578 ("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>
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: 0ce20dd840 ("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>
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>
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: 25182f05ff ("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>
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: 9783aa9917 ("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>
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: 013bb59dbb ("arm64: mte: handle tags zeroing at page allocation time")
Fixes: c275c5c6d5 ("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>
