linux/kernel/locking
Tetsuo Handa 19bf7199c3 lockdep: Allow tuning tracing capacity constants.
commit 5dc33592e9 upstream.

Since syzkaller continues various test cases until the kernel crashes,
syzkaller tends to examine more locking dependencies than normal systems.
As a result, syzbot is reporting that the fuzz testing was terminated
due to hitting upper limits lockdep can track [1] [2] [3]. Since analysis
via /proc/lockdep* did not show any obvious culprit [4] [5], we have no
choice but allow tuning tracing capacity constants.

[1] https://syzkaller.appspot.com/bug?id=3d97ba93fb3566000c1c59691ea427370d33ea1b
[2] https://syzkaller.appspot.com/bug?id=381cb436fe60dc03d7fd2a092b46d7f09542a72a
[3] https://syzkaller.appspot.com/bug?id=a588183ac34c1437fc0785e8f220e88282e5a29f
[4] https://lkml.kernel.org/r/4b8f7a57-fa20-47bd-48a0-ae35d860f233@i-love.sakura.ne.jp
[5] https://lkml.kernel.org/r/1c351187-253b-2d49-acaf-4563c63ae7d2@i-love.sakura.ne.jp

References: https://lkml.kernel.org/r/1595640639-9310-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-21 15:15:27 +02:00
..
lock_events_list.h
lock_events.c
lock_events.h
lockdep_internals.h lockdep: Allow tuning tracing capacity constants. 2022-08-21 15:15:27 +02:00
lockdep_proc.c locking/lockdep: Iterate lock_classes directly when reading lockdep files 2022-04-08 14:40:32 +02:00
lockdep_states.h
lockdep.c lockdep: Allow tuning tracing capacity constants. 2022-08-21 15:15:27 +02:00
locktorture.c locktorture: Make function torture_percpu_rwsem_init() static 2020-08-24 18:45:32 -07:00
Makefile kcsan: Make KCSAN compatible with lockdep 2020-03-21 09:41:16 +01:00
mcs_spinlock.h
mutex-debug.c locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-26 12:06:50 +02:00
mutex-debug.h locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-26 12:06:50 +02:00
mutex.c locking/mutex: Fix HANDOFF condition 2021-09-15 09:50:23 +02:00
mutex.h locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal 2021-05-26 12:06:50 +02:00
osq_lock.c locking/osq_lock: Annotate a data race in osq_lock 2020-06-29 12:04:48 -07:00
percpu-rwsem.c locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count 2020-09-16 16:26:56 +02:00
qrwlock.c locking/qrwlock: Fix ordering in queued_write_lock_slowpath() 2021-04-28 13:40:00 +02:00
qspinlock_paravirt.h
qspinlock_stat.h
qspinlock.c x86/kvm: Add "nopvspin" parameter to disable PV spinlocks 2020-07-08 16:21:57 -04:00
rtmutex_common.h rtmutex: Remove unused argument from rt_mutex_proxy_unlock() 2021-01-30 13:55:17 +01:00
rtmutex-debug.c kernel: rename show_stack_loglvl() => show_stack() 2020-06-09 09:39:13 -07:00
rtmutex-debug.h
rtmutex.c kernel: delete repeated words in comments 2022-02-01 17:25:45 +01:00
rtmutex.h
rwsem.c kernel: delete repeated words in comments 2022-02-01 17:25:45 +01:00
rwsem.h locking/percpu-rwsem: Remove the embedded rwsem 2020-02-11 13:10:56 +01:00
semaphore.c kernel: delete repeated words in comments 2022-02-01 17:25:45 +01:00
spinlock_debug.c lockdep: Introduce wait-type checks 2020-03-21 16:00:24 +01:00
spinlock.c
test-ww_mutex.c