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| author | Zqiang <qiang.zhang@windriver.com> | 2021-05-07 04:03:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-22 12:40:55 +0300 |
| commit | 1fb05a3f1f209185ba3e4d175e6749d654468927 (patch) | |
| tree | bfc3c4334c4dda5878b22099b52ff7fa5d5f6a6f /tools/perf/python/tracepoint.py | |
| parent | 7da9368f915121df0aadcdeb9968a19a625701d3 (diff) | |
| download | linux-1fb05a3f1f209185ba3e4d175e6749d654468927.tar.xz | |
lib: stackdepot: turn depot_lock spinlock to raw_spinlock
[ Upstream commit 78564b9434878d686c5f88c4488b20cccbcc42bc ]
In RT system, the spin_lock will be replaced by sleepable rt_mutex lock,
in __call_rcu(), disable interrupts before calling
kasan_record_aux_stack(), will trigger this calltrace:
BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:951
in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 19, name: pgdatinit0
Call Trace:
___might_sleep.cold+0x1b2/0x1f1
rt_spin_lock+0x3b/0xb0
stack_depot_save+0x1b9/0x440
kasan_save_stack+0x32/0x40
kasan_record_aux_stack+0xa5/0xb0
__call_rcu+0x117/0x880
__exit_signal+0xafb/0x1180
release_task+0x1d6/0x480
exit_notify+0x303/0x750
do_exit+0x678/0xcf0
kthread+0x364/0x4f0
ret_from_fork+0x22/0x30
Replace spinlock with raw_spinlock.
Link: https://lkml.kernel.org/r/20210329084009.27013-1-qiang.zhang@windriver.com
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Reported-by: Andrew Halaney <ahalaney@redhat.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Vijayanand Jitta <vjitta@codeaurora.org>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Cc: Yogesh Lal <ylal@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/python/tracepoint.py')
0 files changed, 0 insertions, 0 deletions