sst-linux/kernel
Jann Horn 5932970c3f sched: Clarify wake_up_q()'s write to task->wake_q.next
[ Upstream commit bcc6244e13b4d4903511a1ea84368abf925031c0 ]

Clarify that wake_up_q() does an atomic write to task->wake_q.next, after
which a concurrent __wake_q_add() can immediately overwrite
task->wake_q.next again.

Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250129-sched-wakeup-prettier-v1-1-2f51f5f663fa@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-03-28 21:58:51 +01:00
..
bpf bpf: skip non exist keys in generic_map_lookup_batch 2025-03-07 16:56:38 +01:00
cgroup cgroup: fix race between fork and cgroup.kill 2025-02-21 13:50:04 +01:00
configs
debug kdb: Do not assume write() callback available 2025-02-21 13:50:09 +01:00
dma dma-debug: fix a possible deadlock on radix_lock 2024-12-14 19:54:43 +01:00
entry entry: Respect changes to system call number by trace_sys_enter() 2024-04-03 15:19:44 +02:00
events uprobes: Fix race in uprobe_free_utask 2025-03-13 12:53:24 +01:00
futex futex: Don't include process MM in futex key on no-MMU 2023-11-20 11:51:50 +01:00
gcov gcov: add support for GCC 14 2024-06-27 13:46:22 +02:00
irq genirq: Make handle_enforce_irqctx() unconditionally available 2025-02-21 13:48:57 +01:00
kcsan kcsan: Turn report_filterlist_lock into a raw_spinlock 2024-12-14 19:54:38 +01:00
livepatch livepatch: Fix missing newline character in klp_resolve_symbols() 2023-11-20 11:52:10 +01:00
locking lockdep: fix deadlock issue between lockdep and rcu 2024-10-17 15:21:27 +02:00
module module: Fix KCOV-ignored file name 2024-10-17 15:21:27 +02:00
power PM: hibernate: Add error handling for syscore_suspend() 2025-02-21 13:49:22 +01:00
printk printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX 2025-02-21 13:49:30 +01:00
rcu Revert "rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()" 2025-01-02 10:30:55 +01:00
sched sched: Clarify wake_up_q()'s write to task->wake_q.next 2025-03-28 21:58:51 +01:00
time hrtimers: Mark is_migration_base() with __always_inline 2025-03-28 21:58:50 +01:00
trace ftrace: Avoid potential division by zero in function_stat_show() 2025-03-07 16:56:47 +01:00
.gitignore
acct.c acct: block access to kernel internal filesystems 2025-03-07 16:56:39 +01:00
async.c async: Introduce async_schedule_dev_nocall() 2024-01-31 16:17:00 -08:00
audit_fsnotify.c
audit_tree.c
audit_watch.c audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare() 2023-11-28 17:07:08 +00:00
audit.c audit: Send netlink ACK before setting connection in auditd_set 2024-02-05 20:12:47 +00:00
audit.h
auditfilter.c ima: Avoid blocking in RCU read-side critical section 2024-07-11 12:47:16 +02:00
auditsc.c audit,io_uring: io_uring openat triggers audit reference count underflow 2023-10-25 12:03:04 +02:00
backtracetest.c
bounds.c bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS 2024-05-02 16:29:32 +02:00
capability.c xfs: don't generate selinux audit messages for capability testing 2022-03-09 10:32:06 -08:00
cfi.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c hrtimers: Handle CPU state correctly on hotplug 2025-01-23 17:17:15 +01:00
crash_core.c
crash_dump.c
cred.c cred: switch to using atomic_long_t 2023-12-20 17:00:20 +01:00
delayacct.c
dma.c
exec_domain.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
exit.c mm: optimize the redundant loop of mm_update_owner_next() 2024-07-11 12:47:13 +02:00
extable.c
fail_function.c
fork.c posix-cpu-timers: Clear TICK_DEP_BIT_POSIX_TIMER on clone 2024-11-14 13:15:16 +01:00
freezer.c
gen_kheaders.sh kheaders: Ignore silly-rename files 2025-01-23 17:17:11 +01:00
groups.c
hung_task.c
iomem.c mm/nvdimm: add is_ioremap_addr and use that to check ioremap address 2019-07-12 11:05:40 -07:00
irq_work.c irq_work: use kasan_record_aux_stack_noalloc() record callstack 2022-04-15 14:49:55 -07:00
jump_label.c jump_label: Fix static_key_slow_dec() yet again 2024-10-17 15:21:29 +02:00
kallsyms_internal.h kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[] 2023-10-25 12:03:16 +02:00
kallsyms.c kallsyms: Add helper kallsyms_on_each_match_symbol() 2023-10-25 12:03:16 +02:00
kcmp.c
Kconfig.freezer treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c kcov: mark in_softirq_really() as __always_inline 2025-01-09 13:30:05 +01:00
kexec_core.c kexec: fix a memory leak in crash_shrink_memory() 2023-07-19 16:21:08 +02:00
kexec_elf.c
kexec_file.c kexec: support purgatories with .text.hot sections 2023-06-21 16:00:55 +02:00
kexec_internal.h
kexec.c kernel: kexec: copy user-array safely 2023-11-28 17:06:57 +00:00
kheaders.c
kmod.c
kprobes.c kprobes: Fix to check symbol prefixes correctly 2024-08-14 13:52:54 +02:00
ksysfs.c
kthread.c kthread: unpark only parked kthread 2024-10-17 15:22:28 +02:00
latencytop.c
Makefile kernel/numa.c: Move logging out of numa.h 2024-06-12 11:03:16 +02:00
module_signature.c
notifier.c
nsproxy.c
numa.c kernel/numa.c: Move logging out of numa.h 2024-06-12 11:03:16 +02:00
padata.c padata: avoid UAF for reorder_work 2025-02-21 13:49:09 +01:00
panic.c panic: Flush kernel log buffer at the end 2024-04-13 13:04:54 +02:00
params.c
pid_namespace.c pid: Replace struct pid 1-element array with flex-array 2024-08-29 17:30:18 +02:00
pid.c pid: Replace struct pid 1-element array with flex-array 2024-08-29 17:30:18 +02:00
profile.c profiling: remove profile=sleep support 2024-08-14 13:52:50 +02:00
ptrace.c
range.c
reboot.c kernel/reboot: emergency_restart: Set correct system_state 2023-11-28 17:07:13 +00:00
regset.c
relay.c relayfs: fix out-of-bounds access in relay_file_read 2023-05-11 23:03:03 +09:00
resource_kunit.c resource: provide meaningful MODULE_LICENSE() in test suite 2020-11-25 18:52:35 +01:00
resource.c resource: fix region_intersects() vs add_memory_driver_managed() 2024-10-17 15:21:55 +02:00
rseq.c rseq: Use pr_warn_once() when deprecated/unknown ABI flags are encountered 2022-11-14 09:58:32 +01:00
scftorture.c scftorture: Forgive memory-allocation failure if KASAN 2023-09-23 11:11:00 +02:00
scs.c
seccomp.c
signal.c signal: restore the override_rlimit logic 2024-11-14 13:15:18 +01:00
smp.c smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu() 2024-09-12 11:10:24 +02:00
smpboot.c
smpboot.h
softirq.c softirq: Allow raising SCHED_SOFTIRQ from SMP-call-function on RT kernel 2025-02-01 18:30:06 +01:00
stackleak.c
stacktrace.c
static_call_inline.c x86/static-call: provide a way to do very early static-call updates 2024-12-19 18:08:58 +01:00
static_call.c
stop_machine.c
sys_ni.c syscalls: fix compat_sys_io_pgetevents_time64 usage 2024-07-05 09:31:59 +02:00
sys.c hrtimer: Use and report correct timerslack values for realtime tasks 2025-03-28 21:58:48 +01:00
sysctl-test.c kernel/sysctl-test: use SYSCTL_{ZERO/ONE_HUNDRED} instead of i_{zero/one_hundred} 2022-09-08 16:56:45 -07:00
sysctl.c proc: proc_skip_spaces() shouldn't think it is working on C strings 2022-12-05 12:09:06 -08:00
task_work.c task_work: Introduce task_work_cancel() again 2024-08-03 08:49:34 +02:00
taskstats.c
torture.c torture: Fix hang during kthread shutdown phase 2023-03-10 09:34:07 +01:00
tracepoint.c tracepoint: Optimize the critical region of mutex_lock in tracepoint_module_coming() 2022-09-26 13:01:18 -04:00
tsacct.c taskstats: version 12 with thread group and exe info 2022-04-29 14:38:03 -07:00
ucount.c ucounts: fix counter leak in inc_rlimit_get_ucounts() 2024-11-14 13:15:19 +01:00
uid16.c fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers 2018-04-02 20:15:59 +02:00
uid16.h
umh.c
up.c
user_namespace.c
user-return-notifier.c
user.c
usermode_driver.c blob_to_mnt(): kern_unmount() is needed to undo kern_mount() 2022-05-19 23:25:47 -04:00
utsname_sysctl.c kernel/utsname_sysctl.c: Fix hostname polling 2022-10-23 12:01:01 -07:00
utsname.c
watch_queue.c kernel: watch_queue: copy user-array safely 2023-11-28 17:06:57 +00:00
watchdog_hld.c watchdog/perf: properly initialize the turbo mode timestamp and rearm counter 2024-08-03 08:49:42 +02:00
watchdog.c watchdog: move softlockup_panic back to early_param 2023-11-28 17:07:09 +00:00
workqueue_internal.h
workqueue.c workqueue: Improve scalability of workqueue watchdog touch 2024-09-12 11:10:27 +02:00