linux-kernelorg-stable/kernel
Linus Torvalds 7cec2e16cb Fix race between perf_event_free_task() and perf_event_release_kernel()
that can result in missed wakeups and hung tasks.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZkCmARHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1hrsBAAsOlZWV+VN0l6TGUqqVZZuuZO03Nk3TX3
 kk4iq/xj9pRNmq1bizfsyCFEH3lK7fSYK2I0/iK145vHASzqyeXT1EbtGv61g7EJ
 Z42oYdmAxhXcBOZRffZYI2t8zOcVBUV5s/aDmim11fftYdXkaX73pAHVJdhg/e0v
 tfgFeJwihG4ynCPa8HrRzBUEXwtKngB8II8mmHyL7E5SsoRsO0ubZBU2MW6P5NA9
 9f27ab9Uxj8YWAKa/1Yn6VKgAird8ao+kUu7hYDjZyZTEOvrXU3HrM+VXptnn1S8
 2UPSRPNlV2MGDn7Uo3AskIFkF4QlZ3DZFGKCn2n/1Qf/OqeD3d39DoCKzg7lTx+9
 gSd7cAtKkrsA1bwfz6uZVPEY9M4eVNqZ5aIo7K28q6zSvSFYy2LI0LCzFVwRgAyK
 q8+XyR0aH9R9BYT1Tj0i6z9uZY/h8KROO/M/bU0egG/JRe4WX7X7mjVEQAapHi5F
 xLvPH0I9wo3jDVuxr7hPaT30Xv67F8V9WSKQ6HlMDN/etXNNLysCyOxDmXSXJ6Z7
 9IWaLrHKJG36vj+rKOpPn6Tm+fGAxlm2lDfXExZkYnyzAI59mmf6XEHQBdPly/Q6
 mXZVi3APTOn0REUo3tqi6UiaLL56HD0yvzwSmqSAFke3Nv+za+SeerwgjS2JoYWr
 hJPmkc9fLBY=
 =uVD+
 -----END PGP SIGNATURE-----

Merge tag 'perf-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf event fix from Ingo Molnar:
 "Fix race between perf_event_free_task() and perf_event_release_kernel()
  that can result in missed wakeups and hung tasks"

* tag 'perf-urgent-2024-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix missing wakeup when waiting for context reference
2024-06-08 09:26:59 -07:00
..
bpf
cgroup
configs
debug
dma
entry
events
futex
gcov
irq
kcsan
livepatch
locking
module
power
printk
rcu
sched
time
trace
.gitignore
Kconfig.freezer
Kconfig.hz
Kconfig.kexec
Kconfig.locks
Kconfig.preempt
Makefile
acct.c
async.c
audit.c
audit.h
audit_fsnotify.c
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cfi.c
compat.c
configs.c
context_tracking.c
cpu.c
cpu_pm.c
crash_core.c
crash_reserve.c
cred.c
delayacct.c
dma.c
elfcorehdr.c
exec_domain.c
exit.c
exit.h
extable.c
fail_function.c
fork.c
freezer.c
gen_kheaders.sh
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kallsyms_internal.h
kallsyms_selftest.c
kallsyms_selftest.h
kcmp.c
kcov.c
kexec.c
kexec_core.c
kexec_elf.c
kexec_file.c
kexec_internal.h
kheaders.c
kprobes.c
ksyms_common.c
ksysfs.c
kthread.c
latencytop.c
module_signature.c
notifier.c
nsproxy.c
numa.c
padata.c
panic.c
params.c
pid.c
pid_namespace.c
pid_sysctl.h
profile.c
ptrace.c
range.c
reboot.c
regset.c
relay.c
resource.c
resource_kunit.c
rseq.c
scftorture.c
scs.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c
stacktrace.c
static_call.c
static_call_inline.c
stop_machine.c
sys.c
sys_ni.c
sysctl-test.c
sysctl.c
task_work.c
taskstats.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c
usermode_driver.c
utsname.c
utsname_sysctl.c
vhost_task.c
vmcore_info.c
watch_queue.c
watchdog.c
watchdog_buddy.c
watchdog_perf.c
workqueue.c
workqueue_internal.h