Recently we have discovered many lag issues caused by percpu_rwsem
lock-holding tasks not being scheduled for a long time. we need to
identify them and provide appropriate scheduling protection in our
oem scheduler.
To support this, we add one hook below:
trace_android_vh_percpu_rwsem_wq_add
Bug: 301066838
Change-Id: Id770c1a7978842abfc62d3fa9aeb5ac7a1904972
Signed-off-by: xieliujie <xieliujie@oppo.com>
Changes in 6.1.51
ACPI: thermal: Drop nocrt parameter
module: Expose module_init_layout_section()
arm64: module-plts: inline linux/moduleloader.h
arm64: module: Use module_init_layout_section() to spot init sections
ARM: module: Use module_init_layout_section() to spot init sections
lockdep: fix static memory detection even more
parisc: Cleanup mmap implementation regarding color alignment
parisc: sys_parisc: parisc_personality() is called from asm code
io_uring/parisc: Adjust pgoff in io_uring mmap() for parisc
kallsyms: Fix kallsyms_selftest failure
thunderbolt: Fix a backport error for display flickering issue
Linux 6.1.51
Change-Id: I8bc79fc29ebf10ba654c16b771af1519eea39b38
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 7f1715d827 which is
commit f7853c34241807bb97673a5e97719123be39a09e upstream.
It breaks the Android api due to a structure, struct rt_mutex_waiter,
escaping out of the core kernel code, into an Android hook, making it
something that can not be modified without potentially major problems.
If this needs to come back, it must do so in an ABI-safe way in the
future, for now, it can just be reverted.
Bug: 161946584
Change-Id: Idd251aa4e905cc284523b0b81b3e8993c6a58866
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Changes in 6.1.43
netfilter: nf_tables: fix underflow in object reference counter
netfilter: nf_tables: fix underflow in chain reference counter
platform/x86/amd/pmf: Notify OS power slider update
platform/x86/amd/pmf: reduce verbosity of apmf_get_system_params
drm/amd/display: Keep PHY active for dp config
ovl: fix null pointer dereference in ovl_permission()
drm/amd: Move helper for dynamic speed switch check out of smu13
drm/amd: Align SMU11 SMU_MSG_OverridePcieParameters implementation with SMU13
jbd2: Fix wrongly judgement for buffer head removing while doing checkpoint
blk-mq: Fix stall due to recursive flush plug
powerpc/pseries/vas: Hold mmap_mutex after mmap lock during window close
KVM: s390: pv: fix index value of replaced ASCE
io_uring: don't audit the capability check in io_uring_create()
gpio: tps68470: Make tps68470_gpio_output() always set the initial value
pwm: Add a stub for devm_pwmchip_add()
gpio: mvebu: Make use of devm_pwmchip_add
gpio: mvebu: fix irq domain leak
btrfs: fix race between quota disable and relocation
i2c: Delete error messages for failed memory allocations
i2c: Improve size determinations
i2c: nomadik: Remove unnecessary goto label
i2c: nomadik: Use devm_clk_get_enabled()
i2c: nomadik: Remove a useless call in the remove function
MIPS: Loongson: Move arch cflags to MIPS top level Makefile
MIPS: Loongson: Fix build error when make modules_install
PCI/ASPM: Return 0 or -ETIMEDOUT from pcie_retrain_link()
PCI/ASPM: Factor out pcie_wait_for_retrain()
PCI/ASPM: Avoid link retraining race
PCI: rockchip: Remove writes to unused registers
PCI: rockchip: Fix window mapping and address translation for endpoint
PCI: rockchip: Don't advertise MSI-X in PCIe capabilities
drm/amd/display: add FB_DAMAGE_CLIPS support
drm/amd/display: Check if link state is valid
drm/amd/display: Rework context change check
drm/amd/display: Enable new commit sequence only for DCN32x
drm/amd/display: Copy DC context in the commit streams
drm/amd/display: Include surface of unaffected streams
drm/amd/display: Use min transition for all SubVP plane add/remove
drm/amd/display: add ODM case when looking for first split pipe
drm/amd/display: use low clocks for no plane configs
drm/amd/display: fix unbounded requesting for high pixel rate modes on dcn315
drm/amd/display: add pixel rate based CRB allocation support
drm/amd/display: fix dcn315 single stream crb allocation
drm/amd/display: Update correct DCN314 register header
drm/amd/display: Set minimum requirement for using PSR-SU on Rembrandt
drm/amd/display: Set minimum requirement for using PSR-SU on Phoenix
drm/ttm: Don't print error message if eviction was interrupted
drm/ttm: Don't leak a resource on eviction error
n_tty: Rename tail to old_tail in n_tty_read()
tty: fix hang on tty device with no_room set
drm/ttm: never consider pinned BOs for eviction&swap
KVM: arm64: Condition HW AF updates on config option
arm64: errata: Mitigate Ampere1 erratum AC03_CPU_38 at stage-2
mptcp: introduce 'sk' to replace 'sock->sk' in mptcp_listen()
mptcp: do not rely on implicit state check in mptcp_listen()
tracing/probes: Add symstr type for dynamic events
tracing/probes: Fix to avoid double count of the string length on the array
tracing: Allow synthetic events to pass around stacktraces
Revert "tracing: Add "(fault)" name injection to kernel probes"
tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails
test_maple_tree: test modifications while iterating
maple_tree: add __init and __exit to test module
maple_tree: fix 32 bit mas_next testing
drm/amd/display: Rework comments on dc file
drm/amd/display: fix dc/core/dc.c kernel-doc
drm/amd/display: Add FAMS validation before trying to use it
drm/amd/display: update extended blank for dcn314 onwards
drm/amd/display: Fix possible underflow for displays with large vblank
drm/amd/display: Prevent vtotal from being set to 0
phy: phy-mtk-dp: Fix an error code in probe()
phy: qcom-snps: correct struct qcom_snps_hsphy kerneldoc
phy: qcom-snps-femto-v2: keep cfg_ahb_clk enabled during runtime suspend
phy: qcom-snps-femto-v2: properly enable ref clock
soundwire: qcom: update status correctly with mask
media: staging: atomisp: select V4L2_FWNODE
media: amphion: Fix firmware path to match linux-firmware
i40e: Fix an NULL vs IS_ERR() bug for debugfs_create_dir()
iavf: fix potential deadlock on allocation failure
iavf: check for removal state before IAVF_FLAG_PF_COMMS_FAILED
net: phy: marvell10g: fix 88x3310 power up
net: hns3: fix the imp capability bit cannot exceed 32 bits issue
net: hns3: fix wrong tc bandwidth weight data issue
net: hns3: fix wrong bw weight of disabled tc issue
vxlan: calculate correct header length for GPE
vxlan: generalize vxlan_parse_gpe_hdr and remove unused args
vxlan: fix GRO with VXLAN-GPE
phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()
atheros: fix return value check in atl1_tso()
ethernet: atheros: fix return value check in atl1e_tso_csum()
ipv6 addrconf: fix bug where deleting a mngtmpaddr can create a new temporary address
tcp: Reduce chance of collisions in inet6_hashfn().
ice: Fix memory management in ice_ethtool_fdir.c
bonding: reset bond's flags when down link is P2P device
team: reset team's flags when down link is P2P device
octeontx2-af: Removed unnecessary debug messages.
octeontx2-af: Fix hash extraction enable configuration
net: stmmac: Apply redundant write work around on 4.xx too
platform/x86: msi-laptop: Fix rfkill out-of-sync on MSI Wind U100
x86/traps: Fix load_unaligned_zeropad() handling for shared TDX memory
igc: Fix Kernel Panic during ndo_tx_timeout callback
netfilter: nft_set_rbtree: fix overlap expiration walk
netfilter: nf_tables: skip immediate deactivate in _PREPARE_ERROR
netfilter: nf_tables: disallow rule addition to bound chain via NFTA_RULE_CHAIN_ID
mm: suppress mm fault logging if fatal signal already pending
net/sched: mqprio: refactor nlattr parsing to a separate function
net/sched: mqprio: add extack to mqprio_parse_nlattr()
net/sched: mqprio: Add length check for TCA_MQPRIO_{MAX/MIN}_RATE64
benet: fix return value check in be_lancer_xmit_workarounds()
tipc: check return value of pskb_trim()
tipc: stop tipc crypto on failure in tipc_node_create
RDMA/mlx4: Make check for invalid flags stricter
drm/msm/dpu: drop enum dpu_core_perf_data_bus_id
drm/msm/adreno: Fix snapshot BINDLESS_DATA size
RDMA/irdma: Add missing read barriers
RDMA/irdma: Fix data race on CQP completion stats
RDMA/irdma: Fix data race on CQP request done
RDMA/mthca: Fix crash when polling CQ for shared QPs
RDMA/bnxt_re: Prevent handling any completions after qp destroy
drm/msm: Fix IS_ERR_OR_NULL() vs NULL check in a5xx_submit_in_rb()
cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()
cxl/acpi: Return 'rc' instead of '0' in cxl_parse_cfmws()
ASoC: fsl_spdif: Silence output on stop
block: Fix a source code comment in include/uapi/linux/blkzoned.h
smb3: do not set NTLMSSP_VERSION flag for negotiate not auth request
drm/i915: Fix an error handling path in igt_write_huge()
xenbus: check xen_domain in xenbus_probe_initcall
dm raid: fix missing reconfig_mutex unlock in raid_ctr() error paths
dm raid: clean up four equivalent goto tags in raid_ctr()
dm raid: protect md_stop() with 'reconfig_mutex'
drm/amd: Fix an error handling mistake in psp_sw_init()
drm/amd/display: Unlock on error path in dm_handle_mst_sideband_msg_ready_event()
RDMA/irdma: Fix op_type reporting in CQEs
RDMA/irdma: Report correct WC error
drm/msm: Switch idr_lock to spinlock
drm/msm: Disallow submit with fence id 0
ublk_drv: move ublk_get_device_from_id into ublk_ctrl_uring_cmd
ublk: fail to start device if queue setup is interrupted
ublk: fail to recover device if queue setup is interrupted
ata: pata_ns87415: mark ns87560_tf_read static
ring-buffer: Fix wrong stat of cpu_buffer->read
tracing: Fix warning in trace_buffered_event_disable()
Revert "usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init()"
usb: gadget: call usb_gadget_check_config() to verify UDC capability
USB: gadget: Fix the memory leak in raw_gadget driver
usb: gadget: core: remove unbalanced mutex_unlock in usb_gadget_activate
KVM: Grab a reference to KVM for VM and vCPU stats file descriptors
KVM: VMX: Don't fudge CR0 and CR4 for restricted L2 guest
KVM: x86: Disallow KVM_SET_SREGS{2} if incoming CR0 is invalid
serial: qcom-geni: drop bogus runtime pm state update
serial: 8250_dw: Preserve original value of DLF register
serial: sifive: Fix sifive_serial_console_setup() section
USB: serial: option: support Quectel EM060K_128
USB: serial: option: add Quectel EC200A module support
USB: serial: simple: add Kaufmann RKS+CAN VCP
USB: serial: simple: sort driver entries
can: gs_usb: gs_can_close(): add missing set of CAN state to CAN_STATE_STOPPED
usb: typec: Set port->pd before adding device for typec_port
usb: typec: Iterate pds array when showing the pd list
usb: typec: Use sysfs_emit_at when concatenating the string
Revert "usb: dwc3: core: Enable AutoRetry feature in the controller"
usb: dwc3: pci: skip BYT GPIO lookup table for hardwired phy
usb: dwc3: don't reset device side if dwc3 was configured as host-only
usb: misc: ehset: fix wrong if condition
usb: ohci-at91: Fix the unhandle interrupt when resume
USB: quirks: add quirk for Focusrite Scarlett
usb: cdns3: fix incorrect calculation of ep_buf_size when more than one config
usb: xhci-mtk: set the dma max_seg_size
Revert "usb: xhci: tegra: Fix error check"
Documentation: security-bugs.rst: update preferences when dealing with the linux-distros group
Documentation: security-bugs.rst: clarify CVE handling
staging: r8712: Fix memory leak in _r8712_init_xmit_priv()
staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext()
tty: n_gsm: fix UAF in gsm_cleanup_mux
Revert "xhci: add quirk for host controllers that don't update endpoint DCS"
ALSA: hda/realtek: Support ASUS G713PV laptop
ALSA: hda/relatek: Enable Mute LED on HP 250 G8
hwmon: (k10temp) Enable AMD3255 Proc to show negative temperature
hwmon: (nct7802) Fix for temp6 (PECI1) processed even if PECI1 disabled
btrfs: account block group tree when calculating global reserve size
btrfs: check if the transaction was aborted at btrfs_wait_for_commit()
btrfs: check for commit error at btrfs_attach_transaction_barrier()
x86/MCE/AMD: Decrement threshold_bank refcount when removing threshold blocks
file: always lock position for FMODE_ATOMIC_POS
nfsd: Remove incorrect check in nfsd4_validate_stateid
ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr_info()
tpm_tis: Explicitly check for error code
irq-bcm6345-l1: Do not assume a fixed block to cpu mapping
irqchip/gic-v4.1: Properly lock VPEs when doing a directLPI invalidation
locking/rtmutex: Fix task->pi_waiters integrity
proc/vmcore: fix signedness bug in read_from_oldmem()
xen: speed up grant-table reclaim
virtio-net: fix race between set queues and probe
net: dsa: qca8k: fix search_and_insert wrong handling of new rule
net: dsa: qca8k: fix broken search_and_del
net: dsa: qca8k: fix mdb add/del case with 0 VID
selftests: mptcp: join: only check for ip6tables if needed
soundwire: fix enumeration completion
Revert "um: Use swap() to make code cleaner"
LoongArch: BPF: Fix check condition to call lu32id in move_imm()
LoongArch: BPF: Enable bpf_probe_read{, str}() on LoongArch
s390/dasd: fix hanging device after quiesce/resume
s390/dasd: print copy pair message only for the correct error
ASoC: wm8904: Fill the cache for WM8904_ADC_TEST_0 register
arm64/sme: Set new vector length before reallocating
PM: sleep: wakeirq: fix wake irq arming
ceph: never send metrics if disable_send_metrics is set
drm/i915/dpt: Use shmem for dpt objects
dm cache policy smq: ensure IO doesn't prevent cleaner policy progress
rbd: make get_lock_owner_info() return a single locker or NULL
rbd: harden get_lock_owner_info() a bit
rbd: retrieve and check lock owner twice before blocklisting
drm/amd/display: set per pipe dppclk to 0 when dpp is off
tracing: Fix trace_event_raw_event_synth() if else statement
drm/amd/display: perform a bounds check before filling dirty rectangles
drm/amd/display: Write to correct dirty_rect
ACPI: processor: perflib: Use the "no limit" frequency QoS
ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily
cpufreq: intel_pstate: Drop ACPI _PSS states table patching
mptcp: ensure subflow is unhashed before cleaning the backlog
selftests: mptcp: sockopt: use 'iptables-legacy' if available
test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation
dma-buf: keep the signaling time of merged fences v3
dma-buf: fix an error pointer vs NULL bug
Linux 6.1.43
Change-Id: Id1d61f2351c51edad33ab654f1f3d911b9a75830
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit 0a6b58c5cd0dfd7961e725212f0fc8dfc5d96195 upstream.
On the parisc architecture, lockdep reports for all static objects which
are in the __initdata section (e.g. "setup_done" in devtmpfs,
"kthreadd_done" in init/main.c) this warning:
INFO: trying to register non-static key.
The warning itself is wrong, because those objects are in the __initdata
section, but the section itself is on parisc outside of range from
_stext to _end, which is why the static_obj() functions returns a wrong
answer.
While fixing this issue, I noticed that the whole existing check can
be simplified a lot.
Instead of checking against the _stext and _end symbols (which include
code areas too) just check for the .data and .bss segments (since we check a
data object). This can be done with the existing is_kernel_core_data()
macro.
In addition objects in the __initdata section can be checked with
init_section_contains(), and is_kernel_rodata() allows keys to be in the
_ro_after_init section.
This partly reverts and simplifies commit bac59d18c7 ("x86/setup: Fix static
memory detection").
Link: https://lkml.kernel.org/r/ZNqrLRaOi/3wPAdp@p100
Fixes: bac59d18c7 ("x86/setup: Fix static memory detection")
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We need a new vendor hook for two reasons:
1.The position of the previous vendor hook is inappropriate: when the task wakes up from percpu_rwsem_wait, it will enter a long runnable state, which will cause frame loss when the application starts. In order to solve this problem, we need to let the process enter the "vip" queue when it is woken up, so we need to set a flag for the process holding the lock to prove that it is about to hold the lock. The timing of setting the flag should be at the beginning of percpu_down_read/percpu_down_write rather than the end.
2.Most of this long runnable state occurs in the cgroup_threadgroup_rwsem, so we only care cgroup_threadgroup_rwsem, and cgroup_threadgroup_rwsem should be exported. At the same time, one more parameter "struct percpu_rw_semaphore *sem", is needed for this vendor hook.
Bug: 294496814
Change-Id: I5f014cfb68a60c29bbfd21452336e381e31e81b1
Signed-off-by: liuxudong5 <liuxudong5@xiaomi.com>
[ Upstream commit f7853c34241807bb97673a5e97719123be39a09e ]
Henry reported that rt_mutex_adjust_prio_check() has an ordering
problem and puts the lie to the comment in [7]. Sharing the sort key
between lock->waiters and owner->pi_waiters *does* create problems,
since unlike what the comment claims, holding [L] is insufficient.
Notably, consider:
A
/ \
M1 M2
| |
B C
That is, task A owns both M1 and M2, B and C block on them. In this
case a concurrent chain walk (B & C) will modify their resp. sort keys
in [7] while holding M1->wait_lock and M2->wait_lock. So holding [L]
is meaningless, they're different Ls.
This then gives rise to a race condition between [7] and [11], where
the requeue of pi_waiters will observe an inconsistent tree order.
B C
(holds M1->wait_lock, (holds M2->wait_lock,
holds B->pi_lock) holds A->pi_lock)
[7]
waiter_update_prio();
...
[8]
raw_spin_unlock(B->pi_lock);
...
[10]
raw_spin_lock(A->pi_lock);
[11]
rt_mutex_enqueue_pi();
// observes inconsistent A->pi_waiters
// tree order
Fixing this means either extending the range of the owner lock from
[10-13] to [6-13], with the immediate problem that this means [6-8]
hold both blocked and owner locks, or duplicating the sort key.
Since the locking in chain walk is horrible enough without having to
consider pi_lock nesting rules, duplicate the sort key instead.
By giving each tree their own sort key, the above race becomes
harmless, if C sees B at the old location, then B will correct things
(if they need correcting) when it walks up the chain and reaches A.
Fixes: fb00aca474 ("rtmutex: Turn the plist into an rb-tree")
Reported-by: Henry Wu <triangletrap12@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Henry Wu <triangletrap12@gmail.com>
Link: https://lkml.kernel.org/r/20230707161052.GF2883469%40hirez.programming.kicks-ass.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
Since upstream commit 715f7f9ece ("locking/rtmutex: Squash !RT
tasks to DEFAULT_PRIO"), non-rt tasks do not inherit the
nice-priority values across rt_mutexes. This removes the minor
(and indirect) priority-inheritance that rt-mutexes provided for
CFS tasks.
Though without priority inheritance, time-bounded priority
inversion can occur between CFS tasks of different nice
priorities / cgroup limitations. The proxy-execution efforts
are a work-in-progress to resolve this upstream, but in the
meantime it is left to vendor hooks to provide a near term
solution to avoid priority inversion between CFS tasks.
In our oem scheduler, if a CFS thread has an "user-aware
property", we will always pick it even if it's vruntime is
bigger than the smallest one in runqueue. That's why the
trace_android_rvh_replace_next_task_fair vendorhook was added
previously in commit 53e809978443 ("ANDROID: vendor_hooks: Add
hooks for scheduler").
Thus for our oem scheduler, important CFS tasks(like
RenderThread) are marked with the "user-aware property" in their
struct task_struct. If those tasks are blocked on an rtmutex, we
want to allow the "user-aware property" to be inherited to lock
owner, so it will be selected to run immediately to release the
lock.
To support this, we need new hooks to map "user-aware property"
into different rtmutex_waiter prio and update the owner's
"user-aware property" if needed. Thus these additional vendor
hooks are needed.
In the future, once an generalized upstream solution for CFS
priority inheritance is in place, this will no longer be needed.
Bug: 290585456
Change-Id: I6521ed2086b147400a54da6b84a324baf16bc649
Signed-off-by: xieliujie <xieliujie@oppo.com>
As a supplement to commit 6c1c1552e6
("ANDROID: vendor_hook: add hooks to protect locking-tsk in cpu scheduler").
In rwsem read, we missed a lock-holding scenario, add it now.
Bug: 290868674
Change-Id: I718dd942b24b330a79283fc241dcbf47cc34c0c5
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
With hooks below, we can mark a lock-owned thread with an identifiable flag, which can protect it from being preempted by some other unimportant threads, and then waiter will be wakeup more quickly.
https://android-review.googlesource.com/c/kernel/common/+/2183353
but now we find an issue like this one:
static inline void __up_write(struct rw_semaphore *sem)
{
...
// Step 1. we clear flag.
trace_android_vh_record_rwsem_lock_starttime(current, 0);
// Step 2. owner may be preempted by unimportant threads.
rwsem_clear_owner(sem);
...
// Step 3. wake up waiter, but it's too later.
if (unlikely(tmp & RWSEM_FLAG_WAITERS))
rwsem_wake(sem);
}
This patch will clear protect-flag after waking up waiters.
Bug: 286024926
Change-Id: I71f8b6a7d8a01336fd36b8267c2cb5edab65bd11
Signed-off-by: xieliujie <xieliujie@oppo.com>
Add hooks to init oem data of mutex.
Bug: 231527236
Signed-off-by: Dezhi Huang <huangdezhi@hihonor.com>
Change-Id: Id0aeac168e81bd3d88051657c32ba709c329dbdd
commit 92cc5d00a431e96e5a49c0b97e5ad4fa7536bd4b upstream.
Apparently despite it being marked inline, the compiler
may not inline __down_read_common() which makes it difficult
to identify the cause of lock contention, as the blocked
function in traceevents will always be listed as
__down_read_common().
So this patch adds __always_inline annotation to the common
function (as well as the inlined helper callers) to force it to
be inlined so the blocking function will be listed (via Wchan)
in traceevents.
Fixes: c995e638cc ("locking/rwsem: Fold __down_{read,write}*()")
Reported-by: Tim Murray <timmurray@google.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Waiman Long <longman@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20230503023351.2832796-1-jstultz@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Apparently despite it being marked inline, the compiler
may not inline __down_read_common() which makes it difficult
to identify the cause of lock contention, as the blocked
function in traceevents will always be listed as
__down_read_common().
So this patch adds __always_inline annotation to the common
function (as well as the inlined helper callers) to force it to
be inlined so the blocking function will be listed (via Wchan)
in traceevents.
Fixes: c995e638cc ("locking/rwsem: Fold __down_{read,write}*()")
Reported-by: Tim Murray <timmurray@google.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Waiman Long <longman@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20230503023351.2832796-1-jstultz@google.com
Bug: 277817995
(cherry picked from commit 92cc5d00a431e96e5a49c0b97e5ad4fa7536bd4b
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/urgent)
Signed-off-by: John Stultz <jstultz@google.com>
(cherry picked from https://android-review.googlesource.com/q/commit:a6c75b2e64573cb9f49f6b89808207856fc0309b)
Merged-In: Ifad7ed7fe9f2d5a9eb0cfe7c35e45c0e86bc3ad4
Change-Id: Ifad7ed7fe9f2d5a9eb0cfe7c35e45c0e86bc3ad4
Add hooks to apply oem's optimization of rwsem and mutex
Bug: 182237112
Signed-off-by: xieliujie <xieliujie@oppo.com>
(cherry picked from commit 80b4341d0520dce2ef1e33aef06c6a2bc8ada518)
Signed-off-by: xieliujie <xieliujie@oppo.com>
Change-Id: I36895c432e5b6d6bff8781b4a7872badb693284c
Signed-off-by: Carlos Llamas <cmllamas@google.com>
[cmllamas: completes the cherry-pick of original commit 80b4341d0520
since commit 0902cc73b793 was only partial]
(cherry picked from commit d4528a28cb5be0c322031f333a6230fa3042931f)
These hooks help us do the following things:
a) Record the number of mutex and rwsem optimistic spin.
b) Monitor the time of mutex and rwsem optimistic spin.
c) Make it possible if oems don't want mutex and rwsem to optimistic spin
for a long time.
Bug: 267565260
Change-Id: I2bee30fb17946be85e026213b481aeaeaee2459f
Signed-off-by: Liujie Xie <xieliujie@oppo.com>
(cherry picked from commit d01f7e1269d2651768a0bd91a88f76339a1cb427)
(cherry picked from commit 05b5ff11ad98c5896b352b4c376a84b63684e06c)
Providing vendor hooks to record the start time of holding the lock, which
protects rwsem/mutex locking-process from being preemptedfor a short time
in some cases.
- android_vh_record_mutex_lock_starttime
- android_vh_record_rtmutex_lock_starttime
- android_vh_record_rwsem_lock_starttime
- android_vh_record_pcpu_rwsem_starttime
Bug: 241191475
Signed-off-by: Peifeng Li <lipeifeng@oppo.com>
Change-Id: I0e967a1e8b77c32a1ad588acd54028fae2f90c4e
(cherry picked from commit f7294947672eb6b786f3c16b49e71e6a239101ad)
Changes in 6.1.16
HID: asus: use spinlock to protect concurrent accesses
HID: asus: use spinlock to safely schedule workers
powerpc/mm: Rearrange if-else block to avoid clang warning
ata: ahci: Revert "ata: ahci: Add Tiger Lake UP{3,4} AHCI controller"
ARM: OMAP2+: Fix memory leak in realtime_counter_init()
arm64: dts: qcom: qcs404: use symbol names for PCIe resets
arm64: dts: qcom: msm8996-tone: Fix USB taking 6 minutes to wake up
arm64: dts: qcom: sm8150-kumano: Panel framebuffer is 2.5k instead of 4k
arm64: dts: qcom: sm6350: Fix up the ramoops node
arm64: dts: qcom: sm6125: Reorder HSUSB PHY clocks to match bindings
arm64: dts: qcom: sm6125-seine: Clean up gpio-keys (volume down)
arm64: dts: imx8m: Align SoC unique ID node unit address
ARM: zynq: Fix refcount leak in zynq_early_slcr_init
arm64: dts: mediatek: mt8195: Add power domain to U3PHY1 T-PHY
arm64: dts: mediatek: mt8183: Fix systimer 13 MHz clock description
arm64: dts: mediatek: mt8192: Fix systimer 13 MHz clock description
arm64: dts: mediatek: mt8195: Fix systimer 13 MHz clock description
arm64: dts: mediatek: mt8186: Fix systimer 13 MHz clock description
arm64: dts: qcom: sdm845-db845c: fix audio codec interrupt pin name
x86/acpi/boot: Do not register processors that cannot be onlined for x2APIC
arm64: dts: qcom: sc7180: correct SPMI bus address cells
arm64: dts: qcom: sc7280: correct SPMI bus address cells
arm64: dts: qcom: sc8280xp: correct SPMI bus address cells
arm64: dts: qcom: sc8280xp: Vote for CX in USB controllers
arm64: dts: meson-gxl: jethub-j80: Fix WiFi MAC address node
arm64: dts: meson-gxl: jethub-j80: Fix Bluetooth MAC node name
arm64: dts: meson-axg: jethub-j1xx: Fix MAC address node names
arm64: dts: meson-gx: Fix Ethernet MAC address unit name
arm64: dts: meson-g12a: Fix internal Ethernet PHY unit name
arm64: dts: meson-gx: Fix the SCPI DVFS node name and unit address
cpuidle, intel_idle: Fix CPUIDLE_FLAG_IRQ_ENABLE *again*
arm64: dts: ti: k3-am62: Enable SPI nodes at the board level
arm64: dts: ti: k3-am62-main: Fix clocks for McSPI
arm64: tegra: Fix duplicate regulator on Jetson TX1
arm64: dts: msm8992-bullhead: add memory hole region
arm64: dts: qcom: msm8992-bullhead: Fix cont_splash_mem size
arm64: dts: qcom: msm8992-bullhead: Disable dfps_data_mem
arm64: dts: qcom: ipq8074: correct USB3 QMP PHY-s clock output names
arm64: dts: qcom: ipq8074: fix Gen2 PCIe QMP PHY
arm64: dts: qcom: ipq8074: fix Gen3 PCIe QMP PHY
arm64: dts: qcom: ipq8074: correct Gen2 PCIe ranges
arm64: dts: qcom: ipq8074: fix Gen3 PCIe node
arm64: dts: qcom: ipq8074: correct PCIe QMP PHY output clock names
arm64: dts: meson: remove CPU opps below 1GHz for G12A boards
ARM: OMAP1: call platform_device_put() in error case in omap1_dm_timer_init()
arm64: dts: mediatek: mt8192: Mark scp_adsp clock as broken
ARM: bcm2835_defconfig: Enable the framebuffer
ARM: s3c: fix s3c64xx_set_timer_source prototype
arm64: dts: ti: k3-j7200: Fix wakeup pinmux range
ARM: dts: exynos: correct wr-active property in Exynos3250 Rinato
ARM: imx: Call ida_simple_remove() for ida_simple_get
arm64: dts: amlogic: meson-gx: fix SCPI clock dvfs node name
arm64: dts: amlogic: meson-axg: fix SCPI clock dvfs node name
arm64: dts: amlogic: meson-gx: add missing SCPI sensors compatible
arm64: dts: amlogic: meson-axg-jethome-jethub-j1xx: fix supply name of USB controller node
arm64: dts: amlogic: meson-gxl-s905d-sml5442tw: drop invalid clock-names property
arm64: dts: amlogic: meson-gx: add missing unit address to rng node name
arm64: dts: amlogic: meson-gxl-s905w-jethome-jethub-j80: fix invalid rtc node name
arm64: dts: amlogic: meson-axg-jethome-jethub-j1xx: fix invalid rtc node name
arm64: dts: amlogic: meson-gxl: add missing unit address to eth-phy-mux node name
arm64: dts: amlogic: meson-gx-libretech-pc: fix update button name
arm64: dts: amlogic: meson-sm1-bananapi-m5: fix adc keys node names
arm64: dts: amlogic: meson-gxl-s905d-phicomm-n1: fix led node name
arm64: dts: amlogic: meson-gxbb-kii-pro: fix led node name
arm64: dts: amlogic: meson-sm1-odroid-hc4: fix active fan thermal trip
locking/rwsem: Disable preemption in all down_read*() and up_read() code paths
arm64: dts: renesas: beacon-renesom: Fix gpio expander reference
arm64: dts: meson: radxa-zero: allow usb otg mode
arm64: dts: meson: bananapi-m5: switch VDDIO_C pin to OPEN_DRAIN
ARM: dts: sun8i: nanopi-duo2: Fix regulator GPIO reference
ublk_drv: remove nr_aborted_queues from ublk_device
ublk_drv: don't probe partitions if the ubq daemon isn't trusted
ARM: dts: imx7s: correct iomuxc gpr mux controller cells
sbitmap: remove redundant check in __sbitmap_queue_get_batch
sbitmap: Use single per-bitmap counting to wake up queued tags
sbitmap: correct wake_batch recalculation to avoid potential IO hung
arm64: dts: mt8195: Fix CPU map for single-cluster SoC
arm64: dts: mt8192: Fix CPU map for single-cluster SoC
arm64: dts: mt8186: Fix CPU map for single-cluster SoC
arm64: dts: mediatek: mt7622: Add missing pwm-cells to pwm node
arm64: dts: mediatek: mt8186: Fix watchdog compatible
arm64: dts: mediatek: mt8195: Fix watchdog compatible
arm64: dts: mediatek: mt7986: Fix watchdog compatible
ARM: dts: stm32: Update part number NVMEM description on stm32mp131
blk-mq: avoid sleep in blk_mq_alloc_request_hctx
blk-mq: remove stale comment for blk_mq_sched_mark_restart_hctx
blk-mq: wait on correct sbitmap_queue in blk_mq_mark_tag_wait
blk-mq: Fix potential io hung for shared sbitmap per tagset
blk-mq: correct stale comment of .get_budget
arm64: dts: qcom: msm8996: support using GPLL0 as kryocc input
arm64: dts: qcom: msm8996 switch from RPM_SMD_BB_CLK1 to RPM_SMD_XO_CLK_SRC
arm64: dts: qcom: sm8350: drop incorrect cells from serial
arm64: dts: qcom: sm8450: drop incorrect cells from serial
arm64: dts: qcom: msm8992-lg-bullhead: Correct memory overlaps with the SMEM and MPSS memory regions
arm64: dts: qcom: msm8953: correct TLMM gpio-ranges
arm64: dts: qcom: msm8992-*: Fix up comments
arm64: dts: qcom: msm8992-lg-bullhead: Enable regulators
s390/dasd: Fix potential memleak in dasd_eckd_init()
sched/rt: pick_next_rt_entity(): check list_entry
perf/x86/intel/ds: Fix the conversion from TSC to perf time
x86/perf/zhaoxin: Add stepping check for ZXC
KEYS: asymmetric: Fix ECDSA use via keyctl uapi
block: ublk: check IO buffer based on flag need_get_data
arm64: dts: qcom: pmk8350: Specify PBS register for PON
arm64: dts: qcom: pmk8350: Use the correct PON compatible
erofs: relinquish volume with mutex held
block: sync mixed merged request's failfast with 1st bio's
block: Fix io statistics for cgroup in throttle path
block: bio-integrity: Copy flags when bio_integrity_payload is cloned
block: use proper return value from bio_failfast()
wifi: mt76: mt7915: add missing of_node_put()
wifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host
wifi: mt76: mt7915: check return value before accessing free_block_num
wifi: mt76: mt7915: drop always true condition of __mt7915_reg_addr()
wifi: mt76: mt7915: fix unintended sign extension of mt7915_hw_queue_read()
wifi: mt76: fix coverity uninit_use_in_call in mt76_connac2_reverse_frag0_hdr_trans()
wifi: rsi: Fix memory leak in rsi_coex_attach()
wifi: rtlwifi: rtl8821ae: don't call kfree_skb() under spin_lock_irqsave()
wifi: rtlwifi: rtl8188ee: don't call kfree_skb() under spin_lock_irqsave()
wifi: rtlwifi: rtl8723be: don't call kfree_skb() under spin_lock_irqsave()
wifi: iwlegacy: common: don't call dev_kfree_skb() under spin_lock_irqsave()
wifi: libertas: fix memory leak in lbs_init_adapter()
wifi: rtl8xxxu: don't call dev_kfree_skb() under spin_lock_irqsave()
wifi: rtw89: 8852c: rfk: correct DACK setting
wifi: rtw89: 8852c: rfk: correct DPK settings
wifi: rtlwifi: Fix global-out-of-bounds bug in _rtl8812ae_phy_set_txpower_limit()
libbpf: Fix btf__align_of() by taking into account field offsets
wifi: ipw2x00: don't call dev_kfree_skb() under spin_lock_irqsave()
wifi: ipw2200: fix memory leak in ipw_wdev_init()
wifi: wilc1000: fix potential memory leak in wilc_mac_xmit()
wifi: wilc1000: add missing unregister_netdev() in wilc_netdev_ifc_init()
wifi: brcmfmac: fix potential memory leak in brcmf_netdev_start_xmit()
wifi: brcmfmac: unmap dma buffer in brcmf_msgbuf_alloc_pktid()
wifi: libertas_tf: don't call kfree_skb() under spin_lock_irqsave()
wifi: libertas: if_usb: don't call kfree_skb() under spin_lock_irqsave()
wifi: libertas: main: don't call kfree_skb() under spin_lock_irqsave()
wifi: libertas: cmdresp: don't call kfree_skb() under spin_lock_irqsave()
wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave()
libbpf: Fix invalid return address register in s390
crypto: x86/ghash - fix unaligned access in ghash_setkey()
ACPICA: Drop port I/O validation for some regions
genirq: Fix the return type of kstat_cpu_irqs_sum()
rcu-tasks: Improve comments explaining tasks_rcu_exit_srcu purpose
rcu-tasks: Remove preemption disablement around srcu_read_[un]lock() calls
rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes()
lib/mpi: Fix buffer overrun when SG is too long
crypto: ccp - Avoid page allocation failure warning for SEV_GET_ID2
platform/chrome: cros_ec_typec: Update port DP VDO
ACPICA: nsrepair: handle cases without a return value correctly
selftests/xsk: print correct payload for packet dump
selftests/xsk: print correct error codes when exiting
arm64/cpufeature: Fix field sign for DIT hwcap detection
kselftest/arm64: Fix syscall-abi for systems without 128 bit SME
workqueue: Protects wq_unbound_cpumask with wq_pool_attach_mutex
s390/early: fix sclp_early_sccb variable lifetime
s390/vfio-ap: fix an error handling path in vfio_ap_mdev_probe_queue()
x86/signal: Fix the value returned by strict_sas_size()
thermal/drivers/tsens: Drop msm8976-specific defines
thermal/drivers/tsens: Sort out msm8976 vs msm8956 data
thermal/drivers/tsens: fix slope values for msm8939
thermal/drivers/tsens: limit num_sensors to 9 for msm8939
wifi: rtw89: fix potential leak in rtw89_append_probe_req_ie()
wifi: rtw89: Add missing check for alloc_workqueue
wifi: rtl8xxxu: Fix memory leaks with RTL8723BU, RTL8192EU
wifi: orinoco: check return value of hermes_write_wordrec()
thermal/drivers/imx_sc_thermal: Drop empty platform remove function
thermal/drivers/imx_sc_thermal: Fix the loop condition
wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function
wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails
wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback()
wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup
wifi: cfg80211: Fix extended KCK key length check in nl80211_set_rekey_data()
ACPI: battery: Fix missing NUL-termination with large strings
selftests/bpf: Fix build errors if CONFIG_NF_CONNTRACK=m
crypto: ccp - Failure on re-initialization due to duplicate sysfs filename
crypto: essiv - Handle EBUSY correctly
crypto: seqiv - Handle EBUSY correctly
powercap: fix possible name leak in powercap_register_zone()
x86/microcode: Add a parameter to microcode_check() to store CPU capabilities
x86/microcode: Check CPU capabilities after late microcode update correctly
x86/microcode: Adjust late loading result reporting message
selftests/bpf: Use consistent build-id type for liburandom_read.so
selftests/bpf: Fix vmtest static compilation error
crypto: xts - Handle EBUSY correctly
leds: led-class: Add missing put_device() to led_put()
s390/bpf: Add expoline to tail calls
wifi: iwlwifi: mei: fix compilation errors in rfkill()
kselftest/arm64: Fix enumeration of systems without 128 bit SME
can: rcar_canfd: Fix R-Car V3U GAFLCFG field accesses
selftests/bpf: Initialize tc in xdp_synproxy
crypto: ccp - Flush the SEV-ES TMR memory before giving it to firmware
bpftool: profile online CPUs instead of possible
wifi: mt76: mt7915: call mt7915_mcu_set_thermal_throttling() only after init_work
wifi: mt76: mt7915: fix memory leak in mt7915_mcu_exit
wifi: mt76: mt7915: fix WED TxS reporting
wifi: mt76: add memory barrier to SDIO queue kick
wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read
net/mlx5: Enhance debug print in page allocation failure
irqchip: Fix refcount leak in platform_irqchip_probe
irqchip/alpine-msi: Fix refcount leak in alpine_msix_init_domains
irqchip/irq-mvebu-gicp: Fix refcount leak in mvebu_gicp_probe
irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe
s390/mem_detect: fix detect_memory() error handling
s390/vmem: fix empty page tables cleanup under KASAN
s390/boot: cleanup decompressor header files
s390/mem_detect: rely on diag260() if sclp_early_get_memsize() fails
s390/boot: fix mem_detect extended area allocation
net: add sock_init_data_uid()
tun: tun_chr_open(): correctly initialize socket uid
tap: tap_open(): correctly initialize socket uid
OPP: fix error checking in opp_migrate_dentry()
cpufreq: davinci: Fix clk use after free
Bluetooth: hci_conn: Refactor hci_bind_bis() since it always succeeds
Bluetooth: L2CAP: Fix potential user-after-free
Bluetooth: hci_qca: get wakeup status from serdev device handle
net: ipa: generic command param fix
s390: vfio-ap: tighten the NIB validity check
s390/ap: fix status returned by ap_aqic()
s390/ap: fix status returned by ap_qact()
libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()
xen/grant-dma-iommu: Implement a dummy probe_device() callback
rds: rds_rm_zerocopy_callback() correct order for list_add_tail()
crypto: rsa-pkcs1pad - Use akcipher_request_complete
m68k: /proc/hardware should depend on PROC_FS
RISC-V: time: initialize hrtimer based broadcast clock event device
clocksource/drivers/riscv: Patch riscv_clock_next_event() jump before first use
wifi: iwl3945: Add missing check for create_singlethread_workqueue
wifi: iwl4965: Add missing check for create_singlethread_workqueue()
wifi: mwifiex: fix loop iterator in mwifiex_update_ampdu_txwinsize()
selftests/bpf: Fix out-of-srctree build
ACPI: resource: Add IRQ overrides for MAINGEAR Vector Pro 2 models
ACPI: resource: Do IRQ override on all TongFang GMxRGxx
crypto: octeontx2 - Fix objects shared between several modules
crypto: crypto4xx - Call dma_unmap_page when done
wifi: mac80211: move color collision detection report in a delayed work
wifi: mac80211: make rate u32 in sta_set_rate_info_rx()
wifi: mac80211: fix non-MLO station association
wifi: mac80211: Don't translate MLD addresses for multicast
wifi: mac80211: avoid u32_encode_bits() warning
wifi: mac80211: fix off-by-one link setting
tools/lib/thermal: Fix thermal_sampling_exit()
thermal/drivers/hisi: Drop second sensor hi3660
selftests/bpf: Fix map_kptr test.
wifi: mac80211: pass 'sta' to ieee80211_rx_data_set_sta()
bpf: Zeroing allocated object from slab in bpf memory allocator
selftests/bpf: Fix xdp_do_redirect on s390x
can: esd_usb: Move mislocated storage of SJA1000_ECC_SEG bits in case of a bus error
can: esd_usb: Make use of can_change_state() and relocate checking skb for NULL
xsk: check IFF_UP earlier in Tx path
LoongArch, bpf: Use 4 instructions for function address in JIT
bpf: Fix global subprog context argument resolution logic
irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts
irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts
net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
net/smc: fix application data exception
selftests/net: Interpret UDP_GRO cmsg data as an int value
l2tp: Avoid possible recursive deadlock in l2tp_tunnel_register()
net: bcmgenet: fix MoCA LED control
net: lan966x: Fix possible deadlock inside PTP
net/mlx4_en: Introduce flexible array to silence overflow warning
selftest: fib_tests: Always cleanup before exit
sefltests: netdevsim: wait for devlink instance after netns removal
drm: Fix potential null-ptr-deref due to drmm_mode_config_init()
drm/fourcc: Add missing big-endian XRGB1555 and RGB565 formats
drm/bridge: ti-sn65dsi83: Fix delay after reset deassert to match spec
drm: mxsfb: DRM_IMX_LCDIF should depend on ARCH_MXC
drm: mxsfb: DRM_MXSFB should depend on ARCH_MXS || ARCH_MXC
drm/bridge: megachips: Fix error handling in i2c_register_driver()
drm/vkms: Fix memory leak in vkms_init()
drm/vkms: Fix null-ptr-deref in vkms_release()
drm/vc4: dpi: Fix format mapping for RGB565
drm: tidss: Fix pixel format definition
gpu: ipu-v3: common: Add of_node_put() for reference returned by of_graph_get_port_by_id()
drm/vc4: drop all currently held locks if deadlock happens
hwmon: (ftsteutates) Fix scaling of measurements
drm/msm/dpu: check for null return of devm_kzalloc() in dpu_writeback_init()
drm/msm/hdmi: Add missing check for alloc_ordered_workqueue
pinctrl: qcom: pinctrl-msm8976: Correct function names for wcss pins
pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain
pinctrl: rockchip: Fix refcount leak in rockchip_pinctrl_parse_groups
drm/vc4: hvs: Set AXI panic modes
drm/vc4: hvs: SCALER_DISPBKGND_AUTOHS is only valid on HVS4
drm/vc4: hvs: Correct interrupt masking bit assignment for HVS5
drm/vc4: hvs: Fix colour order for xRGB1555 on HVS5
drm/vc4: hdmi: Correct interlaced timings again
drm/msm: clean event_thread->worker in case of an error
drm/panel-edp: fix name for IVO product id 854b
scsi: qla2xxx: Fix exchange oversubscription
scsi: qla2xxx: Fix exchange oversubscription for management commands
scsi: qla2xxx: edif: Fix clang warning
ASoC: fsl_sai: initialize is_dsp_mode flag
drm/bridge: tc358767: Set default CLRSIPO count
drm/msm/adreno: Fix null ptr access in adreno_gpu_cleanup()
ALSA: hda/ca0132: minor fix for allocation size
drm/amdgpu: Use the sched from entity for amdgpu_cs trace
drm/msm/gem: Add check for kmalloc
drm/msm/dpu: Disallow unallocated resources to be returned
drm/bridge: lt9611: fix sleep mode setup
drm/bridge: lt9611: fix HPD reenablement
drm/bridge: lt9611: fix polarity programming
drm/bridge: lt9611: fix programming of video modes
drm/bridge: lt9611: fix clock calculation
drm/bridge: lt9611: pass a pointer to the of node
regulator: tps65219: use IS_ERR() to detect an error pointer
drm/mipi-dsi: Fix byte order of 16-bit DCS set/get brightness
drm: exynos: dsi: Fix MIPI_DSI*_NO_* mode flags
drm/msm/dsi: Allow 2 CTRLs on v2.5.0
scsi: ufs: exynos: Fix DMA alignment for PAGE_SIZE != 4096
drm/msm/dpu: sc7180: add missing WB2 clock control
drm/msm: use strscpy instead of strncpy
drm/msm/dpu: Add check for cstate
drm/msm/dpu: Add check for pstates
drm/msm/mdp5: Add check for kzalloc
habanalabs: bugs fixes in timestamps buff alloc
pinctrl: bcm2835: Remove of_node_put() in bcm2835_of_gpio_ranges_fallback()
pinctrl: mediatek: Initialize variable pullen and pullup to zero
pinctrl: mediatek: Initialize variable *buf to zero
gpu: host1x: Fix mask for syncpoint increment register
gpu: host1x: Don't skip assigning syncpoints to channels
drm/tegra: firewall: Check for is_addr_reg existence in IMM check
pinctrl: renesas: rzg2l: Fix configuring the GPIO pins as interrupts
drm/msm/dpu: set pdpu->is_rt_pipe early in dpu_plane_sspp_atomic_update()
drm/mediatek: dsi: Reduce the time of dsi from LP11 to sending cmd
drm/mediatek: Use NULL instead of 0 for NULL pointer
drm/mediatek: Drop unbalanced obj unref
drm/mediatek: mtk_drm_crtc: Add checks for devm_kcalloc
drm/mediatek: Clean dangling pointer on bind error path
ASoC: soc-compress.c: fixup private_data on snd_soc_new_compress()
dt-bindings: display: mediatek: Fix the fallback for mediatek,mt8186-disp-ccorr
gpio: vf610: connect GPIO label to dev name
ASoC: topology: Properly access value coming from topology file
spi: dw_bt1: fix MUX_MMIO dependencies
ASoC: mchp-spdifrx: fix controls which rely on rsr register
ASoC: mchp-spdifrx: fix return value in case completion times out
ASoC: mchp-spdifrx: fix controls that works with completion mechanism
ASoC: mchp-spdifrx: disable all interrupts in mchp_spdifrx_dai_remove()
dm: improve shrinker debug names
regmap: apply reg_base and reg_downshift for single register ops
ASoC: rsnd: fixup #endif position
ASoC: mchp-spdifrx: Fix uninitialized use of mr in mchp_spdifrx_hw_params()
ASoC: dt-bindings: meson: fix gx-card codec node regex
regulator: tps65219: use generic set_bypass()
hwmon: (asus-ec-sensors) add missing mutex path
hwmon: (ltc2945) Handle error case in ltc2945_value_store
ALSA: hda: Fix the control element identification for multiple codecs
drm/amdgpu: fix enum odm_combine_mode mismatch
scsi: mpt3sas: Fix a memory leak
scsi: aic94xx: Add missing check for dma_map_single()
HID: multitouch: Add quirks for flipped axes
HID: retain initial quirks set up when creating HID devices
ASoC: qcom: q6apm-lpass-dai: unprepare stream if its already prepared
ASoC: qcom: q6apm-dai: fix race condition while updating the position pointer
ASoC: qcom: q6apm-dai: Add SNDRV_PCM_INFO_BATCH flag
ASoC: codecs: lpass: register mclk after runtime pm
ASoC: codecs: lpass: fix incorrect mclk rate
drm/amd/display: don't call dc_interrupt_set() for disabled crtcs
HID: logitech-hidpp: Hard-code HID++ 1.0 fast scroll support
spi: bcm63xx-hsspi: Fix multi-bit mode setting
hwmon: (mlxreg-fan) Return zero speed for broken fan
ASoC: tlv320adcx140: fix 'ti,gpio-config' DT property init
dm: remove flush_scheduled_work() during local_exit()
nfs4trace: fix state manager flag printing
NFS: fix disabling of swap
spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one()
ASoC: soc-dapm.h: fixup warning struct snd_pcm_substream not declared
HID: bigben: use spinlock to protect concurrent accesses
HID: bigben_worker() remove unneeded check on report_field
HID: bigben: use spinlock to safely schedule workers
hid: bigben_probe(): validate report count
ALSA: hda/hdmi: Register with vga_switcheroo on Dual GPU Macbooks
drm/shmem-helper: Fix locking for drm_gem_shmem_get_pages_sgt()
NFSD: enhance inter-server copy cleanup
NFSD: fix leaked reference count of nfsd4_ssc_umount_item
nfsd: fix race to check ls_layouts
nfsd: clean up potential nfsd_file refcount leaks in COPY codepath
NFSD: fix problems with cleanup on errors in nfsd4_copy
nfsd: fix courtesy client with deny mode handling in nfs4_upgrade_open
nfsd: don't fsync nfsd_files on last close
NFSD: copy the whole verifier in nfsd_copy_write_verifier
cifs: Fix lost destroy smbd connection when MR allocate failed
cifs: Fix warning and UAF when destroy the MR list
cifs: use tcon allocation functions even for dummy tcon
gfs2: jdata writepage fix
perf llvm: Fix inadvertent file creation
leds: led-core: Fix refcount leak in of_led_get()
leds: is31fl319x: Wrap mutex_destroy() for devm_add_action_or_rest()
leds: simatic-ipc-leds-gpio: Make sure we have the GPIO providing driver
tools/tracing/rtla: osnoise_hist: use total duration for average calculation
perf inject: Use perf_data__read() for auxtrace
perf intel-pt: Do not try to queue auxtrace data on pipe
perf test bpf: Skip test if kernel-debuginfo is not present
perf tools: Fix auto-complete on aarch64
sparc: allow PM configs for sparc32 COMPILE_TEST
selftests: find echo binary to use -ne options
selftests/ftrace: Fix bash specific "==" operator
selftests: use printf instead of echo -ne
perf record: Fix segfault with --overwrite and --max-size
printf: fix errname.c list
perf tests stat_all_metrics: Change true workload to sleep workload for system wide check
objtool: add UACCESS exceptions for __tsan_volatile_read/write
mfd: cs5535: Don't build on UML
mfd: pcf50633-adc: Fix potential memleak in pcf50633_adc_async_read()
dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0
RDMA/erdma: Fix refcount leak in erdma_mmap
dmaengine: HISI_DMA should depend on ARCH_HISI
RDMA/hns: Fix refcount leak in hns_roce_mmap
iio: light: tsl2563: Do not hardcode interrupt trigger type
usb: gadget: fusb300_udc: free irq on the error path in fusb300_probe()
i2c: designware: fix i2c_dw_clk_rate() return size to be u32
soundwire: cadence: Don't overflow the command FIFOs
driver core: fix potential null-ptr-deref in device_add()
kobject: modify kobject_get_path() to take a const *
kobject: Fix slab-out-of-bounds in fill_kobj_path()
alpha/boot/tools/objstrip: fix the check for ELF header
media: uvcvideo: Check for INACTIVE in uvc_ctrl_is_accessible()
media: uvcvideo: Implement mask for V4L2_CTRL_TYPE_MENU
media: uvcvideo: Refactor uvc_ctrl_mappings_uvcXX
media: uvcvideo: Refactor power_line_frequency_controls_limited
coresight: etm4x: Fix accesses to TRCSEQRSTEVR and TRCSEQSTR
coresight: cti: Prevent negative values of enable count
coresight: cti: Add PM runtime call in enable_store
usb: typec: intel_pmc_mux: Don't leak the ACPI device reference count
PCI/IOV: Enlarge virtfn sysfs name buffer
PCI: switchtec: Return -EFAULT for copy_to_user() errors
PCI: endpoint: pci-epf-vntb: Clean up kernel_doc warning
PCI: endpoint: pci-epf-vntb: Add epf_ntb_mw_bar_clear() num_mws kernel-doc
hwtracing: hisi_ptt: Only add the supported devices to the filters list
tty: serial: fsl_lpuart: disable Rx/Tx DMA in lpuart32_shutdown()
tty: serial: fsl_lpuart: clear LPUART Status Register in lpuart32_shutdown()
serial: tegra: Add missing clk_disable_unprepare() in tegra_uart_hw_init()
Revert "char: pcmcia: cm4000_cs: Replace mdelay with usleep_range in set_protocol"
eeprom: idt_89hpesx: Fix error handling in idt_init()
applicom: Fix PCI device refcount leak in applicom_init()
firmware: stratix10-svc: add missing gen_pool_destroy() in stratix10_svc_drv_probe()
firmware: stratix10-svc: fix error handle while alloc/add device failed
VMCI: check context->notify_page after call to get_user_pages_fast() to avoid GPF
mei: pxp: Use correct macros to initialize uuid_le
misc/mei/hdcp: Use correct macros to initialize uuid_le
misc: fastrpc: Fix an error handling path in fastrpc_rpmsg_probe()
driver core: fix resource leak in device_add()
driver core: location: Free struct acpi_pld_info *pld before return false
drivers: base: transport_class: fix possible memory leak
drivers: base: transport_class: fix resource leak when transport_add_device() fails
firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle
fotg210-udc: Add missing completion handler
dmaengine: dw-edma: Fix missing src/dst address of interleaved xfers
fpga: microchip-spi: move SPI I/O buffers out of stack
fpga: microchip-spi: rewrite status polling in a time measurable way
usb: early: xhci-dbc: Fix a potential out-of-bound memory access
tty: serial: fsl_lpuart: Fix the wrong RXWATER setting for rx dma case
RDMA/cxgb4: add null-ptr-check after ip_dev_find()
usb: musb: mediatek: don't unregister something that wasn't registered
usb: gadget: configfs: Restrict symlink creation is UDC already binded
phy: mediatek: remove temporary variable @mask_
PCI: mt7621: Delay phy ports initialization
iommu: dart: Add suspend/resume support
iommu: dart: Support >64 stream IDs
iommu/dart: Fix apple_dart_device_group for PCI groups
iommu/vt-d: Set No Execute Enable bit in PASID table entry
power: supply: remove faulty cooling logic
RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish()
usb: max-3421: Fix setting of I/O pins
RDMA/irdma: Cap MSIX used to online CPUs + 1
serial: fsl_lpuart: fix RS485 RTS polariy inverse issue
tty: serial: imx: Handle RS485 DE signal active high
tty: serial: imx: disable Ageing Timer interrupt request irq
driver core: fw_devlink: Add DL_FLAG_CYCLE support to device links
driver core: fw_devlink: Don't purge child fwnode's consumer links
driver core: fw_devlink: Allow marking a fwnode link as being part of a cycle
driver core: fw_devlink: Consolidate device link flag computation
driver core: fw_devlink: Improve check for fwnode with no device/driver
driver core: fw_devlink: Make cycle detection more robust
mtd: mtdpart: Don't create platform device that'll never probe
usb: host: fsl-mph-dr-of: reuse device_set_of_node_from_dev
dmaengine: dw-edma: Fix readq_ch() return value truncation
PCI: Fix dropping valid root bus resources with .end = zero
phy: rockchip-typec: fix tcphy_get_mode error case
PCI: qcom: Fix host-init error handling
iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()
iommu: Fix error unwind in iommu_group_alloc()
iommu/amd: Do not identity map v2 capable device when snp is enabled
dmaengine: sf-pdma: pdma_desc memory leak fix
dmaengine: dw-axi-dmac: Do not dereference NULL structure
dmaengine: ptdma: check for null desc before calling pt_cmd_callback
iommu/vt-d: Fix error handling in sva enable/disable paths
iommu/vt-d: Allow to use flush-queue when first level is default
RDMA/rxe: cleanup some error handling in rxe_verbs.c
RDMA/rxe: Fix missing memory barriers in rxe_queue.h
IB/hfi1: Fix math bugs in hfi1_can_pin_pages()
IB/hfi1: Fix sdma.h tx->num_descs off-by-one errors
Revert "remoteproc: qcom_q6v5_mss: map/unmap metadata region before/after use"
remoteproc: qcom_q6v5_mss: Use a carveout to authenticate modem headers
media: ti: cal: fix possible memory leak in cal_ctx_create()
media: platform: ti: Add missing check for devm_regulator_get
media: imx: imx7-media-csi: fix missing clk_disable_unprepare() in imx7_csi_init()
powerpc: Remove linker flag from KBUILD_AFLAGS
s390/vdso: Drop '-shared' from KBUILD_CFLAGS_64
builddeb: clean generated package content
media: max9286: Fix memleak in max9286_v4l2_register()
media: ov2740: Fix memleak in ov2740_init_controls()
media: ov5675: Fix memleak in ov5675_init_controls()
media: ov5640: Fix soft reset sequence and timings
media: ov5640: Handle delays when no reset_gpio set
media: mc: Get media_device directly from pad
media: i2c: ov772x: Fix memleak in ov772x_probe()
media: i2c: imx219: Split common registers from mode tables
media: i2c: imx219: Fix binning for RAW8 capture
media: platform: mtk-mdp3: Fix return value check in mdp_probe()
media: camss: csiphy-3ph: avoid undefined behavior
media: platform: mtk-mdp3: remove unused VIDEO_MEDIATEK_VPU config
media: platform: mtk-mdp3: fix Kconfig dependencies
media: v4l2-jpeg: correct the skip count in jpeg_parse_app14_data
media: v4l2-jpeg: ignore the unknown APP14 marker
media: hantro: Fix JPEG encoder ENUM_FRMSIZE on RK3399
media: imx-jpeg: Apply clk_bulk api instead of operating specific clk
media: amphion: correct the unspecified color space
media: drivers/media/v4l2-core/v4l2-h264 : add detection of null pointers
media: rc: Fix use-after-free bugs caused by ene_tx_irqsim()
media: atomisp: Only set default_run_mode on first open of a stream/asd
media: i2c: ov7670: 0 instead of -EINVAL was returned
media: usb: siano: Fix use after free bugs caused by do_submit_urb
media: saa7134: Use video_unregister_device for radio_dev
rpmsg: glink: Avoid infinite loop on intent for missing channel
rpmsg: glink: Release driver_override
ARM: OMAP2+: omap4-common: Fix refcount leak bug
arm64: dts: qcom: msm8996: Add additional A2NoC clocks
udf: Define EFSCORRUPTED error code
context_tracking: Fix noinstr vs KASAN
exit: Detect and fix irq disabled state in oops
ARM: dts: exynos: Use Exynos5420 compatible for the MIPI video phy
fs: Use CHECK_DATA_CORRUPTION() when kernel bugs are detected
blk-iocost: fix divide by 0 error in calc_lcoefs()
blk-cgroup: dropping parent refcount after pd_free_fn() is done
blk-cgroup: synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()
trace/blktrace: fix memory leak with using debugfs_lookup()
btrfs: scrub: improve tree block error reporting
arm64: zynqmp: Enable hs termination flag for USB dwc3 controller
cpuidle, intel_idle: Fix CPUIDLE_FLAG_INIT_XSTATE
x86/fpu: Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads
cpuidle: drivers: firmware: psci: Dont instrument suspend code
cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG
perf/x86/intel/uncore: Add Meteor Lake support
wifi: ath9k: Fix use-after-free in ath9k_hif_usb_disconnect()
wifi: ath11k: fix monitor mode bringup crash
wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()
rcu: Make RCU_LOCKDEP_WARN() avoid early lockdep checks
rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait()
srcu: Delegate work to the boot cpu if using SRCU_SIZE_SMALL
rcu-tasks: Make rude RCU-Tasks work well with CPU hotplug
rcu-tasks: Handle queue-shrink/callback-enqueue race condition
wifi: ath11k: debugfs: fix to work with multiple PCI devices
thermal: intel: Fix unsigned comparison with less than zero
timers: Prevent union confusion from unexpected restart_syscall()
x86/bugs: Reset speculation control settings on init
bpftool: Always disable stack protection for BPF objects
wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds
wifi: mt7601u: fix an integer underflow
inet: fix fast path in __inet_hash_connect()
ice: restrict PTP HW clock freq adjustments to 100, 000, 000 PPB
ice: add missing checks for PF vsi type
ACPI: Don't build ACPICA with '-Os'
bpf, docs: Fix modulo zero, division by zero, overflow, and underflow
thermal: intel: intel_pch: Add support for Wellsburg PCH
clocksource: Suspend the watchdog temporarily when high read latency detected
crypto: hisilicon: Wipe entire pool on error
net: bcmgenet: Add a check for oversized packets
m68k: Check syscall_trace_enter() return code
s390/mm,ptdump: avoid Kasan vs Memcpy Real markers swapping
netfilter: nf_tables: NULL pointer dereference in nf_tables_updobj()
can: isotp: check CAN address family in isotp_bind()
gcc-plugins: drop -std=gnu++11 to fix GCC 13 build
tools/power/x86/intel-speed-select: Add Emerald Rapid quirk
wifi: mt76: dma: free rx_head in mt76_dma_rx_cleanup
ACPI: video: Fix Lenovo Ideapad Z570 DMI match
net/mlx5: fw_tracer: Fix debug print
coda: Avoid partial allocation of sig_inputArgs
uaccess: Add minimum bounds check on kernel buffer size
s390/idle: mark arch_cpu_idle() noinstr
time/debug: Fix memory leak with using debugfs_lookup()
PM: domains: fix memory leak with using debugfs_lookup()
PM: EM: fix memory leak with using debugfs_lookup()
Bluetooth: Fix issue with Actions Semi ATS2851 based devices
Bluetooth: btusb: Add new PID/VID 0489:e0f2 for MT7921
Bluetooth: btusb: Add VID:PID 13d3:3529 for Realtek RTL8821CE
wifi: rtw89: debug: avoid invalid access on RTW89_DBG_SEL_MAC_30
hv_netvsc: Check status in SEND_RNDIS_PKT completion message
s390/kfence: fix page fault reporting
devlink: Fix TP_STRUCT_entry in trace of devlink health report
scm: add user copy checks to put_cmsg()
drm: panel-orientation-quirks: Add quirk for Lenovo Yoga Tab 3 X90F
drm: panel-orientation-quirks: Add quirk for DynaBook K50
drm/amd/display: Reduce expected sdp bandwidth for dcn321
drm/amd/display: Revert Reduce delay when sink device not able to ACK 00340h write
drm/amd/display: Fix potential null-deref in dm_resume
drm/omap: dsi: Fix excessive stack usage
HID: Add Mapping for System Microphone Mute
drm/tiny: ili9486: Do not assume 8-bit only SPI controllers
drm/amd/display: Defer DIG FIFO disable after VID stream enable
drm/radeon: free iio for atombios when driver shutdown
drm/amd: Avoid BUG() for case of SRIOV missing IP version
drm/amdkfd: Page aligned memory reserve size
scsi: lpfc: Fix use-after-free KFENCE violation during sysfs firmware write
Revert "fbcon: don't lose the console font across generic->chip driver switch"
drm/amd: Avoid ASSERT for some message failures
drm: amd: display: Fix memory leakage
drm/amd/display: fix mapping to non-allocated address
HID: uclogic: Add frame type quirk
HID: uclogic: Add battery quirk
HID: uclogic: Add support for XP-PEN Deco Pro SW
HID: uclogic: Add support for XP-PEN Deco Pro MW
drm/msm/dsi: Add missing check for alloc_ordered_workqueue
drm: rcar-du: Add quirk for H3 ES1.x pclk workaround
drm: rcar-du: Fix setting a reserved bit in DPLLCR
drm/drm_print: correct format problem
drm/amd/display: Set hvm_enabled flag for S/G mode
habanalabs: extend fatal messages to contain PCI info
habanalabs: fix bug in timestamps registration code
docs/scripts/gdb: add necessary make scripts_gdb step
drm/msm/dpu: Add DSC hardware blocks to register snapshot
ASoC: soc-compress: Reposition and add pcm_mutex
ASoC: kirkwood: Iterate over array indexes instead of using pointer math
regulator: max77802: Bounds check regulator id against opmode
regulator: s5m8767: Bounds check id indexing into arrays
Revert "drm/amdgpu: TA unload messages are not actually sent to psp when amdgpu is uninstalled"
drm/amd/display: fix FCLK pstate change underflow
gfs2: Improve gfs2_make_fs_rw error handling
hwmon: (coretemp) Simplify platform device handling
hwmon: (nct6775) Directly call ASUS ACPI WMI method
hwmon: (nct6775) B650/B660/X670 ASUS boards support
pinctrl: at91: use devm_kasprintf() to avoid potential leaks
drm/amd/display: Do not commit pipe when updating DRR
scsi: snic: Fix memory leak with using debugfs_lookup()
scsi: ufs: core: Fix device management cmd timeout flow
HID: logitech-hidpp: Don't restart communication if not necessary
drm/amd/display: Enable P-state validation checks for DCN314
drm: panel-orientation-quirks: Add quirk for Lenovo IdeaPad Duet 3 10IGL5
drm/amd/display: Disable HUBP/DPP PG on DCN314 for now
dm thin: add cond_resched() to various workqueue loops
dm cache: add cond_resched() to various workqueue loops
nfsd: zero out pointers after putting nfsd_files on COPY setup error
nfsd: don't hand out delegation on setuid files being opened for write
cifs: prevent data race in smb2_reconnect()
drm/shmem-helper: Revert accidental non-GPL export
driver core: fw_devlink: Avoid spurious error message
wifi: rtl8xxxu: fixing transmisison failure for rtl8192eu
scsi: mpt3sas: Remove usage of dma_get_required_mask() API
firmware: coreboot: framebuffer: Ignore reserved pixel color bits
block: don't allow multiple bios for IOCB_NOWAIT issue
block: clear bio->bi_bdev when putting a bio back in the cache
block: be a bit more careful in checking for NULL bdev while polling
rtc: pm8xxx: fix set-alarm race
ipmi: ipmb: Fix the MODULE_PARM_DESC associated to 'retry_time_ms'
ipmi:ssif: resend_msg() cannot fail
ipmi_ssif: Rename idle state and check
io_uring: Replace 0-length array with flexible array
io_uring: use user visible tail in io_uring_poll()
io_uring: handle TIF_NOTIFY_RESUME when checking for task_work
io_uring: add a conditional reschedule to the IOPOLL cancelation loop
io_uring: add reschedule point to handle_tw_list()
io_uring/rsrc: disallow multi-source reg buffers
io_uring: remove MSG_NOSIGNAL from recvmsg
io_uring: fix fget leak when fs don't support nowait buffered read
s390/extmem: return correct segment type in __segment_load()
s390: discard .interp section
s390/kprobes: fix irq mask clobbering on kprobe reenter from post_handler
s390/kprobes: fix current_kprobe never cleared after kprobes reenter
KVM: s390: disable migration mode when dirty tracking is disabled
cifs: Fix uninitialized memory read in smb3_qfs_tcon()
cifs: Fix uninitialized memory reads for oparms.mode
cifs: fix mount on old smb servers
cifs: introduce cifs_io_parms in smb2_async_writev()
cifs: split out smb3_use_rdma_offload() helper
cifs: don't try to use rdma offload on encrypted connections
cifs: Check the lease context if we actually got a lease
cifs: return a single-use cfid if we did not get a lease
scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization
scsi: mpi3mr: Fix issues in mpi3mr_get_all_tgt_info()
scsi: mpi3mr: Remove unnecessary memcpy() to alltgt_info->dmi
btrfs: hold block group refcount during async discard
locking/rwsem: Prevent non-first waiter from spinning in down_write() slowpath
ksmbd: fix wrong data area length for smb2 lock request
ksmbd: do not allow the actual frame length to be smaller than the rfc1002 length
ksmbd: fix possible memory leak in smb2_lock()
torture: Fix hang during kthread shutdown phase
ARM: dts: exynos: correct HDMI phy compatible in Exynos4
io_uring: mark task TASK_RUNNING before handling resume/task work
hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
fs: hfsplus: fix UAF issue in hfsplus_put_super
exfat: fix reporting fs error when reading dir beyond EOF
exfat: fix unexpected EOF while reading dir
exfat: redefine DIR_DELETED as the bad cluster number
exfat: fix inode->i_blocks for non-512 byte sector size device
fs: dlm: don't set stop rx flag after node reset
fs: dlm: move sending fin message into state change handling
fs: dlm: send FIN ack back in right cases
f2fs: fix information leak in f2fs_move_inline_dirents()
f2fs: retry to update the inode page given data corruption
f2fs: fix cgroup writeback accounting with fs-layer encryption
f2fs: fix kernel crash due to null io->bio
ocfs2: fix defrag path triggering jbd2 ASSERT
ocfs2: fix non-auto defrag path not working issue
fs/cramfs/inode.c: initialize file_ra_state
selftests/landlock: Skip overlayfs tests when not supported
selftests/landlock: Test ptrace as much as possible with Yama
udf: Truncate added extents on failed expansion
udf: Do not bother merging very long extents
udf: Do not update file length for failed writes to inline files
udf: Preserve link count of system files
udf: Detect system inodes linked into directory hierarchy
udf: Fix file corruption when appending just after end of preallocated extent
md: don't update recovery_cp when curr_resync is ACTIVE
RDMA/siw: Fix user page pinning accounting
KVM: Destroy target device if coalesced MMIO unregistration fails
KVM: VMX: Fix crash due to uninitialized current_vmcs
KVM: Register /dev/kvm as the _very_ last thing during initialization
KVM: x86: Purge "highest ISR" cache when updating APICv state
KVM: x86: Blindly get current x2APIC reg value on "nodecode write" traps
KVM: x86: Don't inhibit APICv/AVIC on xAPIC ID "change" if APIC is disabled
KVM: x86: Don't inhibit APICv/AVIC if xAPIC ID mismatch is due to 32-bit ID
KVM: SVM: Flush the "current" TLB when activating AVIC
KVM: SVM: Process ICR on AVIC IPI delivery failure due to invalid target
KVM: SVM: Don't put/load AVIC when setting virtual APIC mode
KVM: x86: Inject #GP if WRMSR sets reserved bits in APIC Self-IPI
KVM: x86: Inject #GP on x2APIC WRMSR that sets reserved bits 63:32
KVM: SVM: Fix potential overflow in SEV's send|receive_update_data()
KVM: SVM: hyper-v: placate modpost section mismatch error
selftests: x86: Fix incorrect kernel headers search path
x86/virt: Force GIF=1 prior to disabling SVM (for reboot flows)
x86/crash: Disable virt in core NMI crash handler to avoid double shootdown
x86/reboot: Disable virtualization in an emergency if SVM is supported
x86/reboot: Disable SVM, not just VMX, when stopping CPUs
x86/kprobes: Fix __recover_optprobed_insn check optimizing logic
x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range
x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter
x86/microcode/AMD: Add a @cpu parameter to the reloading functions
x86/microcode/AMD: Fix mixed steppings support
x86/speculation: Allow enabling STIBP with legacy IBRS
Documentation/hw-vuln: Document the interaction between IBRS and STIBP
virt/sev-guest: Return -EIO if certificate buffer is not large enough
brd: mark as nowait compatible
brd: return 0/-error from brd_insert_page()
brd: check for REQ_NOWAIT and set correct page allocation mask
ima: fix error handling logic when file measurement failed
ima: Align ima_file_mmap() parameters with mmap_file LSM hook
selftests/powerpc: Fix incorrect kernel headers search path
selftests/ftrace: Fix eprobe syntax test case to check filter support
selftests: sched: Fix incorrect kernel headers search path
selftests: core: Fix incorrect kernel headers search path
selftests: pid_namespace: Fix incorrect kernel headers search path
selftests: arm64: Fix incorrect kernel headers search path
selftests: clone3: Fix incorrect kernel headers search path
selftests: pidfd: Fix incorrect kernel headers search path
selftests: membarrier: Fix incorrect kernel headers search path
selftests: kcmp: Fix incorrect kernel headers search path
selftests: media_tests: Fix incorrect kernel headers search path
selftests: gpio: Fix incorrect kernel headers search path
selftests: filesystems: Fix incorrect kernel headers search path
selftests: user_events: Fix incorrect kernel headers search path
selftests: ptp: Fix incorrect kernel headers search path
selftests: sync: Fix incorrect kernel headers search path
selftests: rseq: Fix incorrect kernel headers search path
selftests: move_mount_set_group: Fix incorrect kernel headers search path
selftests: mount_setattr: Fix incorrect kernel headers search path
selftests: perf_events: Fix incorrect kernel headers search path
selftests: ipc: Fix incorrect kernel headers search path
selftests: futex: Fix incorrect kernel headers search path
selftests: drivers: Fix incorrect kernel headers search path
selftests: dmabuf-heaps: Fix incorrect kernel headers search path
selftests: vm: Fix incorrect kernel headers search path
selftests: seccomp: Fix incorrect kernel headers search path
irqdomain: Fix association race
irqdomain: Fix disassociation race
irqdomain: Look for existing mapping only once
irqdomain: Drop bogus fwspec-mapping error handling
irqdomain: Refactor __irq_domain_alloc_irqs()
irqdomain: Fix mapping-creation race
irqdomain: Fix domain registration race
crypto: qat - fix out-of-bounds read
mm/damon/paddr: fix missing folio_put()
ALSA: ice1712: Do not left ice->gpio_mutex locked in aureon_add_controls()
ALSA: hda/realtek: Add quirk for HP EliteDesk 800 G6 Tower PC
jbd2: fix data missing when reusing bh which is ready to be checkpointed
ext4: optimize ea_inode block expansion
ext4: refuse to create ea block when umounted
cxl/pmem: Fix nvdimm registration races
mtd: spi-nor: sfdp: Fix index value for SCCR dwords
mtd: spi-nor: spansion: Consider reserved bits in CFR5 register
mtd: spi-nor: Fix shift-out-of-bounds in spi_nor_set_erase_type
dm: send just one event on resize, not two
dm: add cond_resched() to dm_wq_work()
dm: add cond_resched() to dm_wq_requeue_work()
wifi: rtw88: use RTW_FLAG_POWERON flag to prevent to power on/off twice
wifi: rtl8xxxu: Use a longer retry limit of 48
wifi: ath11k: allow system suspend to survive ath11k
wifi: cfg80211: Fix use after free for wext
wifi: cfg80211: Set SSID if it is not already set
cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies
qede: fix interrupt coalescing configuration
thermal: intel: powerclamp: Fix cur_state for multi package system
dm flakey: fix logic when corrupting a bio
dm cache: free background tracker's queued work in btracker_destroy
dm flakey: don't corrupt the zero page
dm flakey: fix a bug with 32-bit highmem systems
hwmon: (peci/cputemp) Fix off-by-one in coretemp_label allocation
hwmon: (nct6775) Fix incorrect parenthesization in nct6775_write_fan_div()
ARM: dts: qcom: sdx65: Add Qcom SMMU-500 as the fallback for IOMMU node
ARM: dts: qcom: sdx55: Add Qcom SMMU-500 as the fallback for IOMMU node
ARM: dts: exynos: correct TMU phandle in Exynos4210
ARM: dts: exynos: correct TMU phandle in Exynos4
ARM: dts: exynos: correct TMU phandle in Odroid XU3 family
ARM: dts: exynos: correct TMU phandle in Exynos5250
ARM: dts: exynos: correct TMU phandle in Odroid XU
ARM: dts: exynos: correct TMU phandle in Odroid HC1
arm64: mm: hugetlb: Disable HUGETLB_PAGE_OPTIMIZE_VMEMMAP
fuse: add inode/permission checks to fileattr_get/fileattr_set
rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails
ceph: update the time stamps and try to drop the suid/sgid
regulator: core: Use ktime_get_boottime() to determine how long a regulator was off
panic: fix the panic_print NMI backtrace setting
mm/hwpoison: convert TTU_IGNORE_HWPOISON to TTU_HWPOISON
alpha: fix FEN fault handling
dax/kmem: Fix leak of memory-hotplug resources
mips: fix syscall_get_nr
media: ipu3-cio2: Fix PM runtime usage_count in driver unbind
remoteproc/mtk_scp: Move clk ops outside send_lock
docs: gdbmacros: print newest record
mm: memcontrol: deprecate charge moving
mm/thp: check and bail out if page in deferred queue already
ktest.pl: Give back console on Ctrt^C on monitor
kprobes: Fix to handle forcibly unoptimized kprobes on freeing_list
ktest.pl: Fix missing "end_monitor" when machine check fails
ktest.pl: Add RUN_TIMEOUT option with default unlimited
memory tier: release the new_memtier in find_create_memory_tier()
ring-buffer: Handle race between rb_move_tail and rb_check_pages
tools/bootconfig: fix single & used for logical condition
tracing/eprobe: Fix to add filter on eprobe description in README file
iommu/amd: Add a length limitation for the ivrs_acpihid command-line parameter
iommu/amd: Improve page fault error reporting
scsi: aacraid: Allocate cmd_priv with scsicmd
scsi: qla2xxx: Fix link failure in NPIV environment
scsi: qla2xxx: Check if port is online before sending ELS
scsi: qla2xxx: Fix DMA-API call trace on NVMe LS requests
scsi: qla2xxx: Remove unintended flag clearing
scsi: qla2xxx: Fix erroneous link down
scsi: qla2xxx: Remove increment of interface err cnt
scsi: ses: Don't attach if enclosure has no components
scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
scsi: ses: Fix possible addl_desc_ptr out-of-bounds accesses
scsi: ses: Fix possible desc_ptr out-of-bounds accesses
scsi: ses: Fix slab-out-of-bounds in ses_intf_remove()
RISC-V: add a spin_shadow_stack declaration
riscv: Avoid enabling interrupts in die()
riscv: mm: fix regression due to update_mmu_cache change
riscv: jump_label: Fixup unaligned arch_static_branch function
riscv, mm: Perform BPF exhandler fixup on page fault
riscv: ftrace: Remove wasted nops for !RISCV_ISA_C
riscv: ftrace: Reduce the detour code size to half
MIPS: DTS: CI20: fix otg power gpio
PCI/PM: Observe reset delay irrespective of bridge_d3
PCI: Unify delay handling for reset and resume
PCI: hotplug: Allow marking devices as disconnected during bind/unbind
PCI: Avoid FLR for AMD FCH AHCI adapters
PCI/DPC: Await readiness of secondary bus after reset
bus: mhi: ep: Only send -ENOTCONN status if client driver is available
bus: mhi: ep: Move chan->lock to the start of processing queued ch ring
bus: mhi: ep: Save channel state locally during suspend and resume
iommu/vt-d: Avoid superfluous IOTLB tracking in lazy mode
iommu/vt-d: Fix PASID directory pointer coherency
vfio/type1: exclude mdevs from VFIO_UPDATE_VADDR
vfio/type1: prevent underflow of locked_vm via exec()
vfio/type1: track locked_vm per dma
vfio/type1: restore locked_vm
drm/amd: Fix initialization for nbio 7.5.1
drm/i915/quirks: Add inverted backlight quirk for HP 14-r206nv
drm/radeon: Fix eDP for single-display iMac11,2
drm/i915: Don't use stolen memory for ring buffers with LLC
drm/i915: Don't use BAR mappings for ring buffers with LLC
drm/gud: Fix UBSAN warning
drm/edid: fix AVI infoframe aspect ratio handling
drm/edid: fix parsing of 3D modes from HDMI VSDB
qede: avoid uninitialized entries in coal_entry array
brd: use radix_tree_maybe_preload instead of radix_tree_preload
sbitmap: Advance the queue index before waking up a queue
wait: Return number of exclusive waiters awaken
sbitmap: Try each queue to wake up at least one waiter
kbuild: Port silent mode detection to future gnu make.
net: avoid double iput when sock_alloc_file fails
Linux 6.1.16
Change-Id: I705caf70ee547e6d55f38d133bdcd50713aed745
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 66330b896c (Revert "ANDROID: vendor_hooks:
add waiting information for blocked tasks")
The original patch has been reverted to resolve merge issues
with 5.18-rc1. This patch adds again the vendor hooks for the
original purpose.
Bug: 271799327
Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com>
Change-Id: I86b9b7dd553b7b6a5930ace6280ecd66dc5dc4df
commit b613c7f31476c44316bfac1af7cac714b7d6bef9 upstream.
A non-first waiter can potentially spin in the for loop of
rwsem_down_write_slowpath() without sleeping but fail to acquire the
lock even if the rwsem is free if the following sequence happens:
Non-first RT waiter First waiter Lock holder
------------------- ------------ -----------
Acquire wait_lock
rwsem_try_write_lock():
Set handoff bit if RT or
wait too long
Set waiter->handoff_set
Release wait_lock
Acquire wait_lock
Inherit waiter->handoff_set
Release wait_lock
Clear owner
Release lock
if (waiter.handoff_set) {
rwsem_spin_on_owner(();
if (OWNER_NULL)
goto trylock_again;
}
trylock_again:
Acquire wait_lock
rwsem_try_write_lock():
if (first->handoff_set && (waiter != first))
return false;
Release wait_lock
A non-first waiter cannot really acquire the rwsem even if it mistakenly
believes that it can spin on OWNER_NULL value. If that waiter happens
to be an RT task running on the same CPU as the first waiter, it can
block the first waiter from acquiring the rwsem leading to live lock.
Fix this problem by making sure that a non-first waiter cannot spin in
the slowpath loop without sleeping.
Fixes: d257cc8cb8 ("locking/rwsem: Make handoff bit handling more consistent")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Mukesh Ojha <quic_mojha@quicinc.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230126003628.365092-2-longman@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 5a5d7e9badd2cb8065db171961bd30bd3595e4b6 ]
In order to avoid WARN/BUG from generating nested or even recursive
warnings, force rcu_is_watching() true during
WARN/lockdep_rcu_suspicious().
Notably things like unwinding the stack can trigger rcu_dereference()
warnings, which then triggers more unwinding which then triggers more
warnings etc..
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230126151323.408156109@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 3f5245538a1964ae186ab7e1636020a41aa63143 ]
Commit:
91d2a812df ("locking/rwsem: Make handoff writer optimistically spin on owner")
... assumes that when the owner field is changed to NULL, the lock will
become free soon. But commit:
48dfb5d256 ("locking/rwsem: Disable preemption while trying for rwsem lock")
... disabled preemption when acquiring rwsem for write.
However, preemption has not yet been disabled when acquiring a read lock
on a rwsem. So a reader can add a RWSEM_READER_BIAS to count without
setting owner to signal a reader, got preempted out by a RT task which
then spins in the writer slowpath as owner remains NULL leading to live lock.
One easy way to fix this problem is to disable preemption at all the
down_read*() and up_read() code paths as implemented in this patch.
Fixes: 91d2a812df ("locking/rwsem: Make handoff writer optimistically spin on owner")
Reported-by: Mukesh Ojha <quic_mojha@quicinc.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230126003628.365092-3-longman@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Changes in 6.1.12
hv_netvsc: Allocate memory in netvsc_dma_map() with GFP_ATOMIC
btrfs: limit device extents to the device size
btrfs: zlib: zero-initialize zlib workspace
ALSA: hda/realtek: Add Positivo N14KP6-TG
ALSA: emux: Avoid potential array out-of-bound in snd_emux_xg_control()
ALSA: hda/realtek: Fix the speaker output on Samsung Galaxy Book2 Pro 360
ALSA: hda/realtek: Enable mute/micmute LEDs on HP Elitebook, 645 G9
ALSA: hda/realtek: Add quirk for ASUS UM3402 using CS35L41
ALSA: hda/realtek: fix mute/micmute LEDs don't work for a HP platform.
Revert "PCI/ASPM: Save L1 PM Substates Capability for suspend/resume"
Revert "PCI/ASPM: Refactor L1 PM Substates Control Register programming"
tracing: Fix poll() and select() do not work on per_cpu trace_pipe and trace_pipe_raw
of/address: Return an error when no valid dma-ranges are found
can: j1939: do not wait 250 ms if the same addr was already claimed
HID: logitech: Disable hi-res scrolling on USB
xfrm: compat: change expression for switch in xfrm_xlate64
IB/hfi1: Restore allocated resources on failed copyout
xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr()
IB/IPoIB: Fix legacy IPoIB due to wrong number of queues
xfrm: annotate data-race around use_time
RDMA/irdma: Fix potential NULL-ptr-dereference
RDMA/usnic: use iommu_map_atomic() under spin_lock()
xfrm: fix bug with DSCP copy to v6 from v4 tunnel
of: Make OF framebuffer device names unique
net: phylink: move phy_device_free() to correctly release phy device
bonding: fix error checking in bond_debug_reregister()
net: macb: Perform zynqmp dynamic configuration only for SGMII interface
net: phy: meson-gxl: use MMD access dummy stubs for GXL, internal PHY
ionic: clean interrupt before enabling queue to avoid credit race
ionic: refactor use of ionic_rx_fill()
ionic: missed doorbell workaround
cpufreq: qcom-hw: Fix cpufreq_driver->get() for non-LMH systems
uapi: add missing ip/ipv6 header dependencies for linux/stddef.h
net: microchip: sparx5: fix PTP init/deinit not checking all ports
HID: amd_sfh: if no sensors are enabled, clean up
drm/i915: Don't do the WM0->WM1 copy w/a if WM1 is already enabled
drm/virtio: exbuf->fence_fd unmodified on interrupted wait
cpuset: Call set_cpus_allowed_ptr() with appropriate mask for task
nvidiafb: detect the hardware support before removing console.
ice: Do not use WQ_MEM_RECLAIM flag for workqueue
ice: Fix disabling Rx VLAN filtering with port VLAN enabled
ice: switch: fix potential memleak in ice_add_adv_recipe()
net: dsa: mt7530: don't change PVC_EG_TAG when CPU port becomes VLAN-aware
net: mscc: ocelot: fix VCAP filters not matching on MAC with "protocol 802.1Q"
net/mlx5e: Update rx ring hw mtu upon each rx-fcs flag change
net/mlx5: Bridge, fix ageing of peer FDB entries
net/mlx5e: Fix crash unsetting rx-vlan-filter in switchdev mode
net/mlx5e: IPoIB, Show unknown speed instead of error
net/mlx5: Store page counters in a single array
net/mlx5: Expose SF firmware pages counter
net/mlx5: fw_tracer, Clear load bit when freeing string DBs buffers
net/mlx5: fw_tracer, Zero consumer index when reloading the tracer
net/mlx5: Serialize module cleanup with reload and remove
igc: Add ndo_tx_timeout support
net: ethernet: mtk_eth_soc: fix wrong parameters order in __xdp_rxq_info_reg()
txhash: fix sk->sk_txrehash default
selftests: Fix failing VXLAN VNI filtering test
rds: rds_rm_zerocopy_callback() use list_first_entry()
net: mscc: ocelot: fix all IPv6 getting trapped to CPU when PTP timestamping is used
selftests: forwarding: lib: quote the sysctl values
arm64: dts: rockchip: fix input enable pinconf on rk3399
arm64: dts: rockchip: set sdmmc0 speed to sd-uhs-sdr50 on rock-3a
ALSA: pci: lx6464es: fix a debug loop
riscv: stacktrace: Fix missing the first frame
arm64: dts: mediatek: mt8195: Fix vdosys* compatible strings
ASoC: tas5805m: rework to avoid scheduling while atomic.
ASoC: tas5805m: add missing page switch.
ASoC: fsl_sai: fix getting version from VERID
ASoC: topology: Return -ENOMEM on memory allocation failure
clk: microchip: mpfs-ccc: Use devm_kasprintf() for allocating formatted strings
pinctrl: mediatek: Fix the drive register definition of some Pins
pinctrl: aspeed: Fix confusing types in return value
pinctrl: single: fix potential NULL dereference
spi: dw: Fix wrong FIFO level setting for long xfers
pinctrl: aspeed: Revert "Force to disable the function's signal"
pinctrl: intel: Restore the pins that used to be in Direct IRQ mode
cifs: Fix use-after-free in rdata->read_into_pages()
net: USB: Fix wrong-direction WARNING in plusb.c
mptcp: do not wait for bare sockets' timeout
mptcp: be careful on subflow status propagation on errors
selftests: mptcp: allow more slack for slow test-case
selftests: mptcp: stop tests earlier
btrfs: simplify update of last_dir_index_offset when logging a directory
btrfs: free device in btrfs_close_devices for a single device filesystem
usb: core: add quirk for Alcor Link AK9563 smartcard reader
usb: typec: altmodes/displayport: Fix probe pin assign check
cxl/region: Fix null pointer dereference for resetting decoder
cxl/region: Fix passthrough-decoder detection
clk: ingenic: jz4760: Update M/N/OD calculation algorithm
pinctrl: qcom: sm8450-lpass-lpi: correct swr_rx_data group
drm/amd/pm: add SMU 13.0.7 missing GetPptLimit message mapping
ceph: flush cap releases when the session is flushed
nvdimm: Support sizeof(struct page) > MAX_STRUCT_PAGE_SIZE
riscv: Fixup race condition on PG_dcache_clean in flush_icache_pte
riscv: kprobe: Fixup misaligned load text
powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch
drm/amdgpu: Use the TGID for trace_amdgpu_vm_update_ptes
tracing: Fix TASK_COMM_LEN in trace event format file
rtmutex: Ensure that the top waiter is always woken up
arm64: dts: meson-gx: Make mmc host controller interrupts level-sensitive
arm64: dts: meson-g12-common: Make mmc host controller interrupts level-sensitive
arm64: dts: meson-axg: Make mmc host controller interrupts level-sensitive
Fix page corruption caused by racy check in __free_pages
arm64: efi: Force the use of SetVirtualAddressMap() on eMAG and Altra Max machines
drm/amd/pm: bump SMU 13.0.0 driver_if header version
drm/amdgpu: Add unique_id support for GC 11.0.1/2
drm/amd/pm: bump SMU 13.0.7 driver_if header version
drm/amdgpu/fence: Fix oops due to non-matching drm_sched init/fini
drm/amdgpu/smu: skip pptable init under sriov
drm/amd/display: properly handling AGP aperture in vm setup
drm/amd/display: fix cursor offset on rotation 180
drm/i915: Move fd_install after last use of fence
drm/i915: Initialize the obj flags for shmem objects
drm/i915: Fix VBT DSI DVO port handling
x86/speculation: Identify processors vulnerable to SMT RSB predictions
KVM: x86: Mitigate the cross-thread return address predictions bug
Documentation/hw-vuln: Add documentation for Cross-Thread Return Predictions
Linux 6.1.12
Change-Id: I4deaf57516f3e7b40e728d473986fa355a11fc37
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit db370a8b9f67ae5f17e3d5482493294467784504 upstream.
Let L1 and L2 be two spinlocks.
Let T1 be a task holding L1 and blocked on L2. T1, currently, is the top
waiter of L2.
Let T2 be the task holding L2.
Let T3 be a task trying to acquire L1.
The following events will lead to a state in which the wait queue of L2
isn't empty, but no task actually holds the lock.
T1 T2 T3
== == ==
spin_lock(L1)
| raw_spin_lock(L1->wait_lock)
| rtlock_slowlock_locked(L1)
| | task_blocks_on_rt_mutex(L1, T3)
| | | orig_waiter->lock = L1
| | | orig_waiter->task = T3
| | | raw_spin_unlock(L1->wait_lock)
| | | rt_mutex_adjust_prio_chain(T1, L1, L2, orig_waiter, T3)
spin_unlock(L2) | | | |
| rt_mutex_slowunlock(L2) | | | |
| | raw_spin_lock(L2->wait_lock) | | | |
| | wakeup(T1) | | | |
| | raw_spin_unlock(L2->wait_lock) | | | |
| | | | waiter = T1->pi_blocked_on
| | | | waiter == rt_mutex_top_waiter(L2)
| | | | waiter->task == T1
| | | | raw_spin_lock(L2->wait_lock)
| | | | dequeue(L2, waiter)
| | | | update_prio(waiter, T1)
| | | | enqueue(L2, waiter)
| | | | waiter != rt_mutex_top_waiter(L2)
| | | | L2->owner == NULL
| | | | wakeup(T1)
| | | | raw_spin_unlock(L2->wait_lock)
T1 wakes up
T1 != top_waiter(L2)
schedule_rtlock()
If the deadline of T1 is updated before the call to update_prio(), and the
new deadline is greater than the deadline of the second top waiter, then
after the requeue, T1 is no longer the top waiter, and the wrong task is
woken up which will then go back to sleep because it is not the top waiter.
This can be reproduced in PREEMPT_RT with stress-ng:
while true; do
stress-ng --sched deadline --sched-period 1000000000 \
--sched-runtime 800000000 --sched-deadline \
1000000000 --mmapfork 23 -t 20
done
A similar issue was pointed out by Thomas versus the cases where the top
waiter drops out early due to a signal or timeout, which is a general issue
for all regular rtmutex use cases, e.g. futex.
The problematic code is in rt_mutex_adjust_prio_chain():
// Save the top waiter before dequeue/enqueue
prerequeue_top_waiter = rt_mutex_top_waiter(lock);
rt_mutex_dequeue(lock, waiter);
waiter_update_prio(waiter, task);
rt_mutex_enqueue(lock, waiter);
// Lock has no owner?
if (!rt_mutex_owner(lock)) {
// Top waiter changed
----> if (prerequeue_top_waiter != rt_mutex_top_waiter(lock))
----> wake_up_state(waiter->task, waiter->wake_state);
This only takes the case into account where @waiter is the new top waiter
due to the requeue operation.
But it fails to handle the case where @waiter is not longer the top
waiter due to the requeue operation.
Ensure that the new top waiter is woken up so in all cases so it can take
over the ownerless lock.
[ tglx: Amend changelog, add Fixes tag ]
Fixes: c014ef69b3 ("locking/rtmutex: Add wake_state to rt_mutex_waiter")
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230117172649.52465-1-wander@redhat.com
Link: https://lore.kernel.org/r/20230202123020.14844-1-wander@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 6.1.3 into android14-6.1
Changes in 6.1.3
eventpoll: add EPOLL_URING_WAKE poll wakeup flag
eventfd: provide a eventfd_signal_mask() helper
io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups
nvme-pci: fix doorbell buffer value endianness
nvme-pci: fix mempool alloc size
nvme-pci: fix page size checks
ACPI: resource: do IRQ override on XMG Core 15
ACPI: resource: do IRQ override on Lenovo 14ALC7
ACPI: resource: Add Asus ExpertBook B2502 to Asus quirks
ACPI: video: Fix Apple GMUX backlight detection
block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq
ata: ahci: Fix PCS quirk application for suspend
nvme: fix the NVME_CMD_EFFECTS_CSE_MASK definition
nvmet: don't defer passthrough commands with trivial effects to the workqueue
fs/ntfs3: Validate BOOT record_size
fs/ntfs3: Add overflow check for attribute size
fs/ntfs3: Validate data run offset
fs/ntfs3: Add null pointer check to attr_load_runs_vcn
fs/ntfs3: Fix memory leak on ntfs_fill_super() error path
fs/ntfs3: Add null pointer check for inode operations
fs/ntfs3: Validate attribute name offset
fs/ntfs3: Validate buffer length while parsing index
fs/ntfs3: Validate resident attribute name
fs/ntfs3: Fix slab-out-of-bounds read in run_unpack
soundwire: dmi-quirks: add quirk variant for LAPBC710 NUC15
phy: sun4i-usb: Introduce port2 SIDDQ quirk
phy: sun4i-usb: Add support for the H616 USB PHY
fs/ntfs3: Validate index root when initialize NTFS security
fs/ntfs3: Use __GFP_NOWARN allocation at wnd_init()
fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super()
fs/ntfs3: Delete duplicate condition in ntfs_read_mft()
fs/ntfs3: Fix slab-out-of-bounds in r_page
objtool: Fix SEGFAULT
iommu/mediatek: Fix crash on isr after kexec()
powerpc/rtas: avoid device tree lookups in rtas_os_term()
powerpc/rtas: avoid scheduling in rtas_os_term()
rtc: msc313: Fix function prototype mismatch in msc313_rtc_probe()
NFSD: fix use-after-free in __nfs42_ssc_open()
kprobes: kretprobe events missing on 2-core KVM guest
HID: multitouch: fix Asus ExpertBook P2 P2451FA trackpoint
HID: plantronics: Additional PIDs for double volume key presses quirk
futex: Fix futex_waitv() hrtimer debug object leak on kcalloc error
rtmutex: Add acquire semantics for rtmutex lock acquisition slow path
mm, mremap: fix mremap() expanding vma with addr inside vma
mm/mempolicy: fix memory leak in set_mempolicy_home_node system call
kmsan: export kmsan_handle_urb
kmsan: include linux/vmalloc.h
pstore: Properly assign mem_type property
pstore/zone: Use GFP_ATOMIC to allocate zone buffer
hfsplus: fix bug causing custom uid and gid being unable to be assigned with mount
ACPI: x86: s2idle: Force AMD GUID/_REV 2 on HP Elitebook 865
ACPI: x86: s2idle: Stop using AMD specific codepath for Rembrandt+
binfmt: Fix error return code in load_elf_fdpic_binary()
ovl: Use ovl mounter's fsuid and fsgid in ovl_link()
ovl: update ->f_iocb_flags when ovl_change_flags() modifies ->f_flags
ALSA: line6: correct midi status byte when receiving data from podxt
ALSA: line6: fix stack overflow in line6_midi_transmit
ALSA: hda/hdmi: Static PCM mapping again with AMD HDMI codecs
pnode: terminate at peers of source
mfd: mt6360: Add bounds checking in Regmap read/write call-backs
md: fix a crash in mempool_free
mm, compaction: fix fast_isolate_around() to stay within boundaries
f2fs: should put a page when checking the summary info
f2fs: allow to read node block after shutdown
block: Do not reread partition table on exclusively open device
mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING
tpm: acpi: Call acpi_put_table() to fix memory leak
tpm: tpm_crb: Add the missed acpi_put_table() to fix memory leak
tpm: tpm_tis: Add the missed acpi_put_table() to fix memory leak
SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails
kcsan: Instrument memcpy/memset/memmove with newer Clang
Linux 6.1.3
Change-Id: I3ac637177b476ff43ad964c687327a7cbb62d017
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Add the hook to apply vendor's performance tune for owner
of rwsem.
Add the hook for the waiter list of rwsem to allow
vendor perform waiting queue enhancement
ANDROID_VENDOR_DATA added to rw_semaphore
Bug: 264007752
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Signed-off-by: Guanwun Chen <guan-wun.chen@mediatek.com>
Change-Id: I007a5e26f3db2adaeaf4e5ccea414ce7abfa83b8
commit 1c0908d8e441631f5b8ba433523cf39339ee2ba0 upstream.
Jan Kara reported the following bug triggering on 6.0.5-rt14 running dbench
on XFS on arm64.
kernel BUG at fs/inode.c:625!
Internal error: Oops - BUG: 0 [#1] PREEMPT_RT SMP
CPU: 11 PID: 6611 Comm: dbench Tainted: G E 6.0.0-rt14-rt+ #1
pc : clear_inode+0xa0/0xc0
lr : clear_inode+0x38/0xc0
Call trace:
clear_inode+0xa0/0xc0
evict+0x160/0x180
iput+0x154/0x240
do_unlinkat+0x184/0x300
__arm64_sys_unlinkat+0x48/0xc0
el0_svc_common.constprop.4+0xe4/0x2c0
do_el0_svc+0xac/0x100
el0_svc+0x78/0x200
el0t_64_sync_handler+0x9c/0xc0
el0t_64_sync+0x19c/0x1a0
It also affects 6.1-rc7-rt5 and affects a preempt-rt fork of 5.14 so this
is likely a bug that existed forever and only became visible when ARM
support was added to preempt-rt. The same problem does not occur on x86-64
and he also reported that converting sb->s_inode_wblist_lock to
raw_spinlock_t makes the problem disappear indicating that the RT spinlock
variant is the problem.
Which in turn means that RT mutexes on ARM64 and any other weakly ordered
architecture are affected by this independent of RT.
Will Deacon observed:
"I'd be more inclined to be suspicious of the slowpath tbh, as we need to
make sure that we have acquire semantics on all paths where the lock can
be taken. Looking at the rtmutex code, this really isn't obvious to me
-- for example, try_to_take_rt_mutex() appears to be able to return via
the 'takeit' label without acquire semantics and it looks like we might
be relying on the caller's subsequent _unlock_ of the wait_lock for
ordering, but that will give us release semantics which aren't correct."
Sebastian Andrzej Siewior prototyped a fix that does work based on that
comment but it was a little bit overkill and added some fences that should
not be necessary.
The lock owner is updated with an IRQ-safe raw spinlock held, but the
spin_unlock does not provide acquire semantics which are needed when
acquiring a mutex.
Adds the necessary acquire semantics for lock owner updates in the slow path
acquisition and the waiter bit logic.
It successfully completed 10 iterations of the dbench workload while the
vanilla kernel fails on the first iteration.
[ bigeasy@linutronix.de: Initial prototype fix ]
Fixes: 700318d1d7 ("locking/rtmutex: Use acquire/release semantics")
Fixes: 23f78d4a03 ("[PATCH] pi-futex: rt mutex core")
Reported-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221202100223.6mevpbl7i6x5udfd@techsingularity.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rather than incurring a division or requesting too many random bytes for
the given range, use the prandom_u32_max() function, which only takes
the minimum required bytes from the RNG and avoids divisions. This was
done mechanically with this coccinelle script:
@basic@
expression E;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
typedef u64;
@@
(
- ((T)get_random_u32() % (E))
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ((E) - 1))
+ prandom_u32_max(E * XXX_MAKE_SURE_E_IS_POW2)
|
- ((u64)(E) * get_random_u32() >> 32)
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ~PAGE_MASK)
+ prandom_u32_max(PAGE_SIZE)
)
@multi_line@
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
identifier RAND;
expression E;
@@
- RAND = get_random_u32();
... when != RAND
- RAND %= (E);
+ RAND = prandom_u32_max(E);
// Find a potential literal
@literal_mask@
expression LITERAL;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
position p;
@@
((T)get_random_u32()@p & (LITERAL))
// Add one to the literal.
@script:python add_one@
literal << literal_mask.LITERAL;
RESULT;
@@
value = None
if literal.startswith('0x'):
value = int(literal, 16)
elif literal[0] in '123456789':
value = int(literal, 10)
if value is None:
print("I don't know how to handle %s" % (literal))
cocci.include_match(False)
elif value == 2**32 - 1 or value == 2**31 - 1 or value == 2**24 - 1 or value == 2**16 - 1 or value == 2**8 - 1:
print("Skipping 0x%x for cleanup elsewhere" % (value))
cocci.include_match(False)
elif value & (value + 1) != 0:
print("Skipping 0x%x because it's not a power of two minus one" % (value))
cocci.include_match(False)
elif literal.startswith('0x'):
coccinelle.RESULT = cocci.make_expr("0x%x" % (value + 1))
else:
coccinelle.RESULT = cocci.make_expr("%d" % (value + 1))
// Replace the literal mask with the calculated result.
@plus_one@
expression literal_mask.LITERAL;
position literal_mask.p;
expression add_one.RESULT;
identifier FUNC;
@@
- (FUNC()@p & (LITERAL))
+ prandom_u32_max(RESULT)
@collapse_ret@
type T;
identifier VAR;
expression E;
@@
{
- T VAR;
- VAR = (E);
- return VAR;
+ return E;
}
@drop_var@
type T;
identifier VAR;
@@
{
- T VAR;
... when != VAR
}
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: KP Singh <kpsingh@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz> # for ext4 and sbitmap
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> # for drbd
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc
Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
linux-next for a couple of months without, to my knowledge, any negative
reports (or any positive ones, come to that).
- Also the Maple Tree from Liam R. Howlett. An overlapping range-based
tree for vmas. It it apparently slight more efficient in its own right,
but is mainly targeted at enabling work to reduce mmap_lock contention.
Liam has identified a number of other tree users in the kernel which
could be beneficially onverted to mapletrees.
Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat
(https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com).
This has yet to be addressed due to Liam's unfortunately timed
vacation. He is now back and we'll get this fixed up.
- Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses
clang-generated instrumentation to detect used-unintialized bugs down to
the single bit level.
KMSAN keeps finding bugs. New ones, as well as the legacy ones.
- Yang Shi adds a userspace mechanism (madvise) to induce a collapse of
memory into THPs.
- Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support
file/shmem-backed pages.
- userfaultfd updates from Axel Rasmussen
- zsmalloc cleanups from Alexey Romanov
- cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure
- Huang Ying adds enhancements to NUMA balancing memory tiering mode's
page promotion, with a new way of detecting hot pages.
- memcg updates from Shakeel Butt: charging optimizations and reduced
memory consumption.
- memcg cleanups from Kairui Song.
- memcg fixes and cleanups from Johannes Weiner.
- Vishal Moola provides more folio conversions
- Zhang Yi removed ll_rw_block() :(
- migration enhancements from Peter Xu
- migration error-path bugfixes from Huang Ying
- Aneesh Kumar added ability for a device driver to alter the memory
tiering promotion paths. For optimizations by PMEM drivers, DRM
drivers, etc.
- vma merging improvements from Jakub Matěn.
- NUMA hinting cleanups from David Hildenbrand.
- xu xin added aditional userspace visibility into KSM merging activity.
- THP & KSM code consolidation from Qi Zheng.
- more folio work from Matthew Wilcox.
- KASAN updates from Andrey Konovalov.
- DAMON cleanups from Kaixu Xia.
- DAMON work from SeongJae Park: fixes, cleanups.
- hugetlb sysfs cleanups from Muchun Song.
- Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core.
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Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in
linux-next for a couple of months without, to my knowledge, any
negative reports (or any positive ones, come to that).
- Also the Maple Tree from Liam Howlett. An overlapping range-based
tree for vmas. It it apparently slightly more efficient in its own
right, but is mainly targeted at enabling work to reduce mmap_lock
contention.
Liam has identified a number of other tree users in the kernel which
could be beneficially onverted to mapletrees.
Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat
at [1]. This has yet to be addressed due to Liam's unfortunately
timed vacation. He is now back and we'll get this fixed up.
- Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses
clang-generated instrumentation to detect used-unintialized bugs down
to the single bit level.
KMSAN keeps finding bugs. New ones, as well as the legacy ones.
- Yang Shi adds a userspace mechanism (madvise) to induce a collapse of
memory into THPs.
- Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to
support file/shmem-backed pages.
- userfaultfd updates from Axel Rasmussen
- zsmalloc cleanups from Alexey Romanov
- cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and
memory-failure
- Huang Ying adds enhancements to NUMA balancing memory tiering mode's
page promotion, with a new way of detecting hot pages.
- memcg updates from Shakeel Butt: charging optimizations and reduced
memory consumption.
- memcg cleanups from Kairui Song.
- memcg fixes and cleanups from Johannes Weiner.
- Vishal Moola provides more folio conversions
- Zhang Yi removed ll_rw_block() :(
- migration enhancements from Peter Xu
- migration error-path bugfixes from Huang Ying
- Aneesh Kumar added ability for a device driver to alter the memory
tiering promotion paths. For optimizations by PMEM drivers, DRM
drivers, etc.
- vma merging improvements from Jakub Matěn.
- NUMA hinting cleanups from David Hildenbrand.
- xu xin added aditional userspace visibility into KSM merging
activity.
- THP & KSM code consolidation from Qi Zheng.
- more folio work from Matthew Wilcox.
- KASAN updates from Andrey Konovalov.
- DAMON cleanups from Kaixu Xia.
- DAMON work from SeongJae Park: fixes, cleanups.
- hugetlb sysfs cleanups from Muchun Song.
- Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core.
Link: https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com [1]
* tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (555 commits)
hugetlb: allocate vma lock for all sharable vmas
hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer
hugetlb: fix vma lock handling during split vma and range unmapping
mglru: mm/vmscan.c: fix imprecise comments
mm/mglru: don't sync disk for each aging cycle
mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol
mm: memcontrol: use do_memsw_account() in a few more places
mm: memcontrol: deprecate swapaccounting=0 mode
mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled
mm/secretmem: remove reduntant return value
mm/hugetlb: add available_huge_pages() func
mm: remove unused inline functions from include/linux/mm_inline.h
selftests/vm: add selftest for MADV_COLLAPSE of uffd-minor memory
selftests/vm: add file/shmem MADV_COLLAPSE selftest for cleared pmd
selftests/vm: add thp collapse shmem testing
selftests/vm: add thp collapse file and tmpfs testing
selftests/vm: modularize thp collapse memory operations
selftests/vm: dedup THP helpers
mm/khugepaged: add tracepoint to hpage_collapse_scan_file()
mm/madvise: add file and shmem support to MADV_COLLAPSE
...
- Disable preemption in rwsem_write_trylock()'s attempt to
take the rwsem, to avoid RT tasks hogging the CPU, which
managed to preempt this function after the owner has
been cleared but before a new owner is set. Also add
debug checks to enforce this.
- Add __lockfunc to more slow path functions and add
__sched to semaphore functions.
- Mark spinlock APIs noinline when the respective CONFIG_INLINE_SPIN_*
toggles are disabled, to reduce LTO text size.
- Print more debug information when lockdep gets confused
in look_up_lock_class().
- Improve header file abuse checks.
- Misc cleanups
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Disable preemption in rwsem_write_trylock()'s attempt to take the
rwsem, to avoid RT tasks hogging the CPU, which managed to preempt
this function after the owner has been cleared but before a new owner
is set. Also add debug checks to enforce this.
- Add __lockfunc to more slow path functions and add __sched to
semaphore functions.
- Mark spinlock APIs noinline when the respective CONFIG_INLINE_SPIN_*
toggles are disabled, to reduce LTO text size.
- Print more debug information when lockdep gets confused in
look_up_lock_class().
- Improve header file abuse checks.
- Misc cleanups
* tag 'locking-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Print more debug information - report name and key when look_up_lock_class() got confused
locking: Add __sched to semaphore functions
locking/rwsem: Disable preemption while trying for rwsem lock
locking: Detect includes rwlock.h outside of spinlock.h
locking: Add __lockfunc to slow path functions
locking/spinlocks: Mark spinlocks noinline when inline spinlocks are disabled
selftests: futex: Fix 'the the' typo in comment
Printing this information will be helpful:
------------[ cut here ]------------
Looking for class "l2tp_sock" with key l2tp_socket_class, but found a different class "slock-AF_INET6" with the same key
WARNING: CPU: 1 PID: 14195 at kernel/locking/lockdep.c:940 look_up_lock_class+0xcc/0x140
Modules linked in:
CPU: 1 PID: 14195 Comm: a.out Not tainted 6.0.0-rc6-dirty #863
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:look_up_lock_class+0xcc/0x140
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/bd99391e-f787-efe9-5ec6-3c6dc4c587b0@I-love.SAKURA.ne.jp
The internal functions are marked with __sched already, let's do the same
for external functions too so that we can skip them in the stack trace.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220909000803.4181857-1-namhyung@kernel.org
Make the region inside the rwsem_write_trylock non preemptible.
We observe RT task is hogging CPU when trying to acquire rwsem lock
which was acquired by a kworker task but before the rwsem owner was set.
Here is the scenario:
1. CFS task (affined to a particular CPU) takes rwsem lock.
2. CFS task gets preempted by a RT task before setting owner.
3. RT task (FIFO) is trying to acquire the lock, but spinning until
RT throttling happens for the lock as the lock was taken by CFS task.
This patch attempts to fix the above issue by disabling preemption
until owner is set for the lock. While at it also fix the issues
at the places where rwsem_{set,clear}_owner() are called.
This also adds lockdep annotation of preemption disable in
rwsem_{set,clear}_owner() on Peter Z. suggestion.
Signed-off-by: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com>
Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/1662661467-24203-1-git-send-email-quic_mojha@quicinc.com
So that we can skip the functions in the perf lock contention and other
places like /proc/PID/wchan.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/20220810220346.1919485-1-namhyung@kernel.org
Otherwise LTO will inline them anyways and cause a large kernel text increase.
Since the explicit intention here is to not inline them marking them noinline
is good documentation even for the non-LTO case.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Martin Liska <mliska@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20220719110548.1544-1-jslaby@suse.cz
This pull request contains the following branches:
doc.2022.06.21a: Documentation updates.
fixes.2022.07.19a: Miscellaneous fixes.
nocb.2022.07.19a: Callback-offload updates, perhaps most notably a new
RCU_NOCB_CPU_DEFAULT_ALL Kconfig option that causes all CPUs to
be offloaded at boot time, regardless of kernel boot parameters.
This is useful to battery-powered systems such as ChromeOS
and Android. In addition, a new RCU_NOCB_CPU_CB_BOOST kernel
boot parameter prevents offloaded callbacks from interfering
with real-time workloads and with energy-efficiency mechanisms.
poll.2022.07.21a: Polled grace-period updates, perhaps most notably
making these APIs account for both normal and expedited grace
periods.
rcu-tasks.2022.06.21a: Tasks RCU updates, perhaps most notably reducing
the CPU overhead of RCU tasks trace grace periods by more than
a factor of two on a system with 15,000 tasks. The reduction
is expected to increase with the number of tasks, so it seems
reasonable to hypothesize that a system with 150,000 tasks might
see a 20-fold reduction in CPU overhead.
torture.2022.06.21a: Torture-test updates.
ctxt.2022.07.05a: Updates that merge RCU's dyntick-idle tracking into
context tracking, thus reducing the overhead of transitioning to
kernel mode from either idle or nohz_full userspace execution
for kernels that track context independently of RCU. This is
expected to be helpful primarily for kernels built with
CONFIG_NO_HZ_FULL=y.
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Merge tag 'rcu.2022.07.26a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
- Documentation updates
- Miscellaneous fixes
- Callback-offload updates, perhaps most notably a new
RCU_NOCB_CPU_DEFAULT_ALL Kconfig option that causes all CPUs to be
offloaded at boot time, regardless of kernel boot parameters.
This is useful to battery-powered systems such as ChromeOS and
Android. In addition, a new RCU_NOCB_CPU_CB_BOOST kernel boot
parameter prevents offloaded callbacks from interfering with
real-time workloads and with energy-efficiency mechanisms
- Polled grace-period updates, perhaps most notably making these APIs
account for both normal and expedited grace periods
- Tasks RCU updates, perhaps most notably reducing the CPU overhead of
RCU tasks trace grace periods by more than a factor of two on a
system with 15,000 tasks.
The reduction is expected to increase with the number of tasks, so it
seems reasonable to hypothesize that a system with 150,000 tasks
might see a 20-fold reduction in CPU overhead
- Torture-test updates
- Updates that merge RCU's dyntick-idle tracking into context tracking,
thus reducing the overhead of transitioning to kernel mode from
either idle or nohz_full userspace execution for kernels that track
context independently of RCU.
This is expected to be helpful primarily for kernels built with
CONFIG_NO_HZ_FULL=y
* tag 'rcu.2022.07.26a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (98 commits)
rcu: Add irqs-disabled indicator to expedited RCU CPU stall warnings
rcu: Diagnose extended sync_rcu_do_polled_gp() loops
rcu: Put panic_on_rcu_stall() after expedited RCU CPU stall warnings
rcutorture: Test polled expedited grace-period primitives
rcu: Add polled expedited grace-period primitives
rcutorture: Verify that polled GP API sees synchronous grace periods
rcu: Make Tiny RCU grace periods visible to polled APIs
rcu: Make polled grace-period API account for expedited grace periods
rcu: Switch polled grace-period APIs to ->gp_seq_polled
rcu/nocb: Avoid polling when my_rdp->nocb_head_rdp list is empty
rcu/nocb: Add option to opt rcuo kthreads out of RT priority
rcu: Add nocb_cb_kthread check to rcu_is_callbacks_kthread()
rcu/nocb: Add an option to offload all CPUs on boot
rcu/nocb: Fix NOCB kthreads spawn failure with rcu_nocb_rdp_deoffload() direct call
rcu/nocb: Invert rcu_state.barrier_mutex VS hotplug lock locking order
rcu/nocb: Add/del rdp to iterate from rcuog itself
rcu/tree: Add comment to describe GP-done condition in fqs loop
rcu: Initialize first_gp_fqs at declaration in rcu_gp_fqs()
rcu/kvfree: Remove useless monitor_todo flag
rcu: Cleanup RCU urgency state for offline CPU
...
- lockdep: Fix a handful of the more complex lockdep_init_map_*() primitives
that can lose the lock_type & cause false reports. No such mishap was
observed in the wild.
- jump_label improvements: simplify the cross-arch support of
initial NOP patching by making it arch-specific code (used on MIPS only),
and remove the s390 initial NOP patching that was superfluous.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2022-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"This was a fairly quiet cycle for the locking subsystem:
- lockdep: Fix a handful of the more complex lockdep_init_map_*()
primitives that can lose the lock_type & cause false reports. No
such mishap was observed in the wild.
- jump_label improvements: simplify the cross-arch support of initial
NOP patching by making it arch-specific code (used on MIPS only),
and remove the s390 initial NOP patching that was superfluous"
* tag 'locking-core-2022-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Fix lockdep_init_map_*() confusion
jump_label: make initial NOP patching the special case
jump_label: mips: move module NOP patching into arch code
jump_label: s390: avoid pointless initial NOP patching
With commit d257cc8cb8 ("locking/rwsem: Make handoff bit handling more
consistent"), the writer that sets the handoff bit can be interrupted
out without clearing the bit if the wait queue isn't empty. This disables
reader and writer optimistic lock spinning and stealing.
Now if a non-first writer in the queue is somehow woken up or a new
waiter enters the slowpath, it can't acquire the lock. This is not the
case before commit d257cc8cb8 as the writer that set the handoff bit
will clear it when exiting out via the out_nolock path. This is less
efficient as the busy rwsem stays in an unlock state for a longer time.
In some cases, this new behavior may cause lockups as shown in [1] and
[2].
This patch allows a non-first writer to ignore the handoff bit if it
is not originally set or initiated by the first waiter. This patch is
shown to be effective in fixing the lockup problem reported in [1].
[1] https://lore.kernel.org/lkml/20220617134325.GC30825@techsingularity.net/
[2] https://lore.kernel.org/lkml/3f02975c-1a9d-be20-32cf-f1d8e3dfafcc@oracle.com/
Fixes: d257cc8cb8 ("locking/rwsem: Make handoff bit handling more consistent")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: John Donnelly <john.p.donnelly@oracle.com>
Tested-by: Mel Gorman <mgorman@techsingularity.net>
Link: https://lore.kernel.org/r/20220622200419.778799-1-longman@redhat.com
The RCU dynticks counter is going to be merged into the context tracking
subsystem. Start with moving the idle extended quiescent states
entrypoints to context tracking. For now those are dumb redirections to
existing RCU calls.
[ paulmck: Apply kernel test robot feedback. ]
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Cc: Uladzislau Rezki <uladzislau.rezki@sony.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicolas Saenz Julienne <nsaenz@kernel.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Cc: Yu Liao <liaoyu15@huawei.com>
Cc: Phil Auld <pauld@redhat.com>
Cc: Paul Gortmaker<paul.gortmaker@windriver.com>
Cc: Alex Belits <abelits@marvell.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Tested-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Commit dfd5e3f5fe ("locking/lockdep: Mark local_lock_t") added yet
another lockdep_init_map_*() variant, but forgot to update all the
existing users of the most complicated version.
This could lead to a loss of lock_type and hence an incorrect report.
Given the relative rarity of both local_lock and these annotations,
this is unlikely to happen in practise, still, best fix things.
Fixes: dfd5e3f5fe ("locking/lockdep: Mark local_lock_t")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YqyEDtoan20K0CVD@worktop.programming.kicks-ass.net
Since the rewrote of prandom_u32(), in the commit mentioned below, the
function uses sleeping locks which extracing random numbers and filling
the batch.
This breaks lockdep on PREEMPT_RT because lock_pin_lock() disables
interrupts while calling __lock_pin_lock(). This can't be moved earlier
because the main user of the function (rq_pin_lock()) invokes that
function after disabling interrupts in order to acquire the lock.
The cookie does not require random numbers as its goal is to provide a
random value in order to notice unexpected "unlock + lock" sites.
Use sched_clock() to provide random numbers.
Fixes: a0103f4d86f88 ("random32: use real rng for non-deterministic randomness")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YoNn3pTkm5+QzE5k@linutronix.de
For two kernel releases now kernel/sysctl.c has been being cleaned up
slowly, since the tables were grossly long, sprinkled with tons of #ifdefs and
all this caused merge conflicts with one susbystem or another.
This tree was put together to help try to avoid conflicts with these cleanups
going on different trees at time. So nothing exciting on this pull request,
just cleanups.
I actually had this sysctl-next tree up since v5.18 but I missed sending a
pull request for it on time during the last merge window. And so these changes
have been being soaking up on sysctl-next and so linux-next for a while.
The last change was merged May 4th.
Most of the compile issues were reported by 0day and fixed.
To help avoid a conflict with bpf folks at Daniel Borkmann's request
I merged bpf-next/pr/bpf-sysctl into sysctl-next to get the effor which
moves the BPF sysctls from kernel/sysctl.c to BPF core.
Possible merge conflicts and known resolutions as per linux-next:
bfp:
https://lkml.kernel.org/r/20220414112812.652190b5@canb.auug.org.au
rcu:
https://lkml.kernel.org/r/20220420153746.4790d532@canb.auug.org.au
powerpc:
https://lkml.kernel.org/r/20220520154055.7f964b76@canb.auug.org.au
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Merge tag 'sysctl-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull sysctl updates from Luis Chamberlain:
"For two kernel releases now kernel/sysctl.c has been being cleaned up
slowly, since the tables were grossly long, sprinkled with tons of
#ifdefs and all this caused merge conflicts with one susbystem or
another.
This tree was put together to help try to avoid conflicts with these
cleanups going on different trees at time. So nothing exciting on this
pull request, just cleanups.
Thanks a lot to the Uniontech and Huawei folks for doing some of this
nasty work"
* tag 'sysctl-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (28 commits)
sched: Fix build warning without CONFIG_SYSCTL
reboot: Fix build warning without CONFIG_SYSCTL
kernel/kexec_core: move kexec_core sysctls into its own file
sysctl: minor cleanup in new_dir()
ftrace: fix building with SYSCTL=y but DYNAMIC_FTRACE=n
fs/proc: Introduce list_for_each_table_entry for proc sysctl
mm: fix unused variable kernel warning when SYSCTL=n
latencytop: move sysctl to its own file
ftrace: fix building with SYSCTL=n but DYNAMIC_FTRACE=y
ftrace: Fix build warning
ftrace: move sysctl_ftrace_enabled to ftrace.c
kernel/do_mount_initrd: move real_root_dev sysctls to its own file
kernel/delayacct: move delayacct sysctls to its own file
kernel/acct: move acct sysctls to its own file
kernel/panic: move panic sysctls to its own file
kernel/lockdep: move lockdep sysctls to its own file
mm: move page-writeback sysctls to their own file
mm: move oom_kill sysctls to their own file
kernel/reboot: move reboot sysctls to its own file
sched: Move energy_aware sysctls to topology.c
...
Queued rwlock was originally named "queue rwlock" which wasn't quite
grammatically correct. However there are still some "queue rwlock"
references in the code. Change those to "queued rwlock" for consistency.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220510192134.434753-1-longman@redhat.com
kernel/sysctl.c is a kitchen sink where everyone leaves their dirty
dishes, this makes it very difficult to maintain.
To help with this maintenance let's start by moving sysctls to places
where they actually belong. The proc sysctl maintainers do not want to
know what sysctl knobs you wish to add for your own piece of code, we
just care about the core logic.
All filesystem syctls now get reviewed by fs folks. This commit
follows the commit of fs, move the prove_locking and lock_stat sysctls
to its own file, kernel/lockdep.c.
Signed-off-by: tangmeng <tangmeng@uniontech.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Have the trace_contention_*() tracepoints consistently include
adaptive spinning. In order to differentiate between the spinning and
non-spinning states add LCB_F_MUTEX and combine with LCB_F_SPIN.
The consequence is that a mutex contention can now triggler multiple
_begin() tracepoints before triggering an _end().
Additionally, this fixes one path where mutex would trigger _end()
without ever seeing a _begin().
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Greg Kroah-Hartman