Roland Xu 6a86cbe5ce rtmutex: Drop rt_mutex::wait_lock before scheduling ... BugLink: https://bugs.launchpad.net/bugs/2081278 commit d33d26036a0274b472299d7dcdaa5fb34329f91b upstream. rt_mutex_handle_deadlock() is called with rt_mutex::wait_lock held. In the good case it returns with the lock held and in the deadlock case it emits a warning and goes into an endless scheduling loop with the lock held, which triggers the 'scheduling in atomic' warning. Unlock rt_mutex::wait_lock in the dead lock case before issuing the warning and dropping into the schedule for ever loop. [ tglx: Moved unlock before the WARN(), removed the pointless comment, massaged changelog, added Fixes tag ] Fixes: 3d5c9340d1 ("rtmutex: Handle deadlock detection smarter") Signed-off-by: Roland Xu <mu001999@outlook.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/ME0P300MB063599BEF0743B8FA339C2CECC802@ME0P300MB0635.AUSP300.PROD.OUTLOOK.COM Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Signed-off-by: Stefan Bader <stefan.bader@canonical.com>		2024-09-27 10:50:35 +02:00
..
bpf	bpf: Fix DEVMAP_HASH overflow check on 32-bit arches	2024-09-27 10:50:10 +02:00
cgroup	cgroup: Protect css->cgroup write under css_set_lock	2024-09-27 10:50:32 +02:00
configs	…
debug	kdb: Use the passed prompt in kdb_position_cursor()	2024-09-27 10:50:16 +02:00
dma	dma: fix call order in dmam_free_coherent	2024-09-27 10:50:16 +02:00
events	uprobes: Use kzalloc to allocate xol area	2024-09-27 10:50:34 +02:00
gcov	gcov: add support for GCC 14	2024-08-02 16:16:19 +02:00
irq	genirq/irqdesc: Honor caller provided affinity in alloc_desc()	2024-09-27 10:50:21 +02:00
livepatch	livepatch: fix race between fork and KLP transition	2023-01-06 08:43:53 -08:00
locking	rtmutex: Drop rt_mutex::wait_lock before scheduling	2024-09-27 10:50:35 +02:00
power	PM: suspend: Set mem_sleep_current during kernel command line setup	2024-06-07 15:01:33 +02:00
printk	printk: Update @console_may_schedule in console_trylock_spinning()	2024-06-07 15:01:36 +02:00
rcu	rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment	2024-08-02 16:16:17 +02:00
sched	sched/fair: Allow disabling sched_balance_newidle with sched_relax_domain_level	2024-07-05 10:51:59 +02:00
time	hrtimer: Prevent queuing of hrtimer without a function callback	2024-09-27 10:50:25 +02:00
trace	tracing: Avoid possible softlockup in tracing_iter_reset()	2024-09-27 10:50:34 +02:00
.gitignore	…
Kconfig.freezer	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Kconfig.hz	…
Kconfig.locks	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Kconfig.preempt	…
Makefile	…
acct.c	…
async.c	…
audit.c	audit: Send netlink ACK before setting connection in auditd_set	2024-03-28 15:18:33 +01:00
audit.h	…
audit_fsnotify.c	…
audit_tree.c	…
audit_watch.c	audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()	2024-02-02 14:13:10 +01:00
auditfilter.c	…
auditsc.c	audit: fix possible soft lockup in __audit_inode_child()	2023-10-30 11:42:11 +01:00
backtracetest.c	…
bounds.c	bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS	2024-06-07 15:01:47 +02:00
capability.c	…
compat.c	…
configs.c	…
context_tracking.c	…
cpu.c	hrtimers: Push pending hrtimers away from outgoing CPU earlier	2024-02-02 14:13:17 +01:00
cpu_pm.c	…
crash_core.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230	2019-06-19 17:09:06 +02:00
crash_dump.c	…
cred.c	cred: switch to using atomic_long_t	2024-02-02 14:13:21 +01:00
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	mm: optimize the redundant loop of mm_update_owner_next()	2024-08-02 16:16:30 +02:00
extable.c	…
fail_function.c	…
fork.c	kernel/fork: beware of __put_task_struct() calling context	2023-10-30 11:42:22 +01:00
freezer.c	Revert "libata, freezer: avoid block device removal while system is frozen"	2019-10-06 09:11:37 -06:00
futex.c	…
gen_kheaders.sh	kheaders: explicitly define file modes for archived headers	2024-08-02 16:16:20 +02:00
groups.c	…
hung_task.c	…
iomem.c	…
irq_work.c	…
jump_label.c	…
kallsyms.c	kallsyms: Refactor kallsyms_show_value() to take cred	2020-08-08 01:53:12 -04:00
kcmp.c	exec: Transform exec_update_mutex into a rw_semaphore	2021-02-19 16:43:34 +01:00
kcov.c	kcov: convert kcov.refcount to refcount_t	2019-03-07 18:32:02 -08:00
kexec.c	kexec_load: Disable at runtime if the kernel is locked down	2019-08-19 21:54:15 -07:00
kexec_core.c	kexec: fix a memory leak in crash_shrink_memory()	2023-10-02 12:12:02 +02:00
kexec_elf.c	…
kexec_file.c	kexec: support purgatories with .text.hot sections	2023-09-01 14:48:44 +02:00
kexec_internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
kheaders.c	kheaders: Use array declaration instead of char	2023-08-09 12:25:14 +02:00
kmod.c	kmod: make request_module() return an error when autoloading is disabled	2020-05-05 12:32:22 +02:00
kprobes.c	kprobes: Fix possible use-after-free issue on kprobe registration	2024-06-07 15:01:43 +02:00
ksysfs.c	…
kthread.c	kthread: Fix PF_KTHREAD vs to_kthread() race	2021-10-01 11:33:59 +02:00
latencytop.c	…
module-internal.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
module.c	UBUNTU: SAUCE: Revert "modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules"	2023-10-30 11:42:04 +01:00
module_signature.c	…
module_signing.c	…
notifier.c	…
nsproxy.c	…
padata.c	crypto: pcrypt - Fix hungtask for PADATA_RESET	2024-02-02 14:13:07 +01:00
panic.c	panic: Flush kernel log buffer at the end	2024-06-07 15:01:40 +02:00
params.c	params: lift param_set_uint_minmax to common code	2024-07-05 10:52:01 +02:00
pid.c	kernel/pid.c: convert struct pid count to refcount_t	2019-07-16 19:23:24 -07:00
pid_namespace.c	memcg: enable accounting for pids in nested pid namespaces	2021-10-12 16:31:40 -06:00
profile.c	profiling: fix shift too large makes kernel panic	2022-10-17 15:01:11 +02:00
ptrace.c	…
range.c	…
reboot.c	kernel/reboot: emergency_restart: Set correct system_state	2024-02-02 14:13:10 +01:00
relay.c	…
resource.c	…
rseq.c	signal: Remove task parameter from force_sig	2019-05-27 09:36:28 -05:00
seccomp.c	seccomp: Invalidate seccomp mode to catch death failures	2022-04-14 11:32:10 +02:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-09-16 10:59:30 +02:00
smp.c	smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()	2024-09-27 10:50:33 +02:00
smpboot.c	kthread: Extract KTHREAD_IS_PER_CPU	2021-03-24 11:11:35 +01:00
smpboot.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
softirq.c	…
stackleak.c	stackleak: Mark stackleak_track_stack() as notrace	2018-12-05 19:31:44 -08:00
stacktrace.c	…
stop_machine.c	…
sys.c	getrusage: use sig->stats_lock rather than lock_task_sighand()	2024-06-07 15:01:22 +02:00
sys_ni.c	…
sysctl-test.c	kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()	2020-11-09 14:47:16 +01:00
sysctl.c	sched/rt: Disallow writing invalid values to sched_rt_period_us	2024-04-26 10:54:05 +02:00
sysctl_binary.c	…
task_work.c	…
taskstats.c	…
test_kprobes.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 25	2019-05-21 11:52:39 +02:00
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	…
utsname.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
utsname_sysctl.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
watchdog.c	…
watchdog_hld.c	watchdog/perf: properly initialize the turbo mode timestamp and rearm counter	2024-09-27 10:50:15 +02:00
workqueue.c	workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()	2024-01-05 14:29:54 +01:00
workqueue_internal.h	sched/core, workqueues: Distangle worker accounting from rq lock	2019-04-16 16:55:15 +02:00