syzbot


possible deadlock in perf_event_release_kernel

Status: upstream: reported C repro on 2020/02/01 09:27
Reported-by: syzbot+f1c8028dcc896ca525b5@syzkaller.appspotmail.com
First crash: 1597d, last: 478d
Fix bisection attempts (7)
Created Duration User Patch Repo Result
2022/03/06 06:10 20m bisect fix linux-4.14.y job log (0) log
2021/11/14 02:12 21m bisect fix linux-4.14.y job log (0) log
2021/10/15 01:45 26m bisect fix linux-4.14.y job log (0) log
2021/09/15 01:17 28m bisect fix linux-4.14.y job log (0) log
2021/08/16 00:54 22m bisect fix linux-4.14.y job log (0) log
2021/07/17 00:31 23m bisect fix linux-4.14.y job log (0) log
2021/06/17 00:09 21m bisect fix linux-4.14.y job log (0) log

Sample crash report:
======================================================
WARNING: possible circular locking dependency detected
4.14.298-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor706/7995 is trying to acquire lock:
 (event_mutex){+.+.}, at: [<ffffffff815b25e3>] perf_trace_destroy+0x23/0xf0 kernel/trace/trace_event_perf.c:234

but task is already holding lock:
 (&event->child_mutex){+.+.}, at: [<ffffffff8165a588>] perf_event_release_kernel+0x208/0x8a0 kernel/events/core.c:4405

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #5 (&event->child_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       perf_event_for_each_child+0x82/0x140 kernel/events/core.c:4690
       perf_event_for_each kernel/events/core.c:4707 [inline]
       _perf_ioctl+0x3db/0x1a60 kernel/events/core.c:4875
       perf_ioctl+0x55/0x80 kernel/events/core.c:4889
       vfs_ioctl fs/ioctl.c:46 [inline]
       file_ioctl fs/ioctl.c:500 [inline]
       do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
       SYSC_ioctl fs/ioctl.c:701 [inline]
       SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

-> #4 (&cpuctx_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       perf_event_init_cpu+0xb7/0x170 kernel/events/core.c:11286
       perf_event_init+0x2cc/0x308 kernel/events/core.c:11333
       start_kernel+0x45d/0x763 init/main.c:624
       secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240

-> #3 (pmus_lock){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       perf_event_init_cpu+0x2c/0x170 kernel/events/core.c:11280
       cpuhp_invoke_callback+0x1e6/0x1a80 kernel/cpu.c:186
       cpuhp_up_callbacks kernel/cpu.c:574 [inline]
       _cpu_up+0x21e/0x520 kernel/cpu.c:1193
       do_cpu_up+0x9a/0x160 kernel/cpu.c:1229
       smp_init+0x197/0x1ac kernel/smp.c:578
       kernel_init_freeable+0x406/0x626 init/main.c:1074
       kernel_init+0xd/0x164 init/main.c:1006
       ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406

-> #2 (cpu_hotplug_lock.rw_sem){++++}:
       percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
       percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
       cpus_read_lock+0x39/0xc0 kernel/cpu.c:297
       static_key_slow_inc+0xe/0x20 kernel/jump_label.c:123
       tracepoint_add_func+0x747/0xa40 kernel/tracepoint.c:269
       tracepoint_probe_register_prio kernel/tracepoint.c:331 [inline]
       tracepoint_probe_register+0x8c/0xc0 kernel/tracepoint.c:352
       trace_event_reg+0x272/0x330 kernel/trace/trace_events.c:305
       perf_trace_event_reg kernel/trace/trace_event_perf.c:122 [inline]
       perf_trace_event_init kernel/trace/trace_event_perf.c:197 [inline]
       perf_trace_init+0x424/0xa30 kernel/trace/trace_event_perf.c:221
       perf_tp_event_init+0x79/0xf0 kernel/events/core.c:8140
       perf_try_init_event+0x15b/0x1f0 kernel/events/core.c:9374
       perf_init_event kernel/events/core.c:9412 [inline]
       perf_event_alloc.part.0+0xe2d/0x2640 kernel/events/core.c:9672
       perf_event_alloc kernel/events/core.c:10042 [inline]
       SYSC_perf_event_open kernel/events/core.c:10146 [inline]
       SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10032
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

-> #1 (tracepoints_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       tracepoint_probe_register_prio kernel/tracepoint.c:327 [inline]
       tracepoint_probe_register+0x68/0xc0 kernel/tracepoint.c:352
       trace_event_reg+0x272/0x330 kernel/trace/trace_events.c:305
       perf_trace_event_reg kernel/trace/trace_event_perf.c:122 [inline]
       perf_trace_event_init kernel/trace/trace_event_perf.c:197 [inline]
       perf_trace_init+0x424/0xa30 kernel/trace/trace_event_perf.c:221
       perf_tp_event_init+0x79/0xf0 kernel/events/core.c:8140
       perf_try_init_event+0x15b/0x1f0 kernel/events/core.c:9374
       perf_init_event kernel/events/core.c:9412 [inline]
       perf_event_alloc.part.0+0xe2d/0x2640 kernel/events/core.c:9672
       perf_event_alloc kernel/events/core.c:10042 [inline]
       SYSC_perf_event_open kernel/events/core.c:10146 [inline]
       SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10032
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

-> #0 (event_mutex){+.+.}:
       lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       perf_trace_destroy+0x23/0xf0 kernel/trace/trace_event_perf.c:234
       _free_event+0x321/0xe20 kernel/events/core.c:4246
       free_event+0x32/0x40 kernel/events/core.c:4273
       perf_event_release_kernel+0x368/0x8a0 kernel/events/core.c:4417
       perf_release+0x33/0x40 kernel/events/core.c:4443
       __fput+0x25f/0x7a0 fs/file_table.c:210
       task_work_run+0x11f/0x190 kernel/task_work.c:113
       exit_task_work include/linux/task_work.h:22 [inline]
       do_exit+0xa44/0x2850 kernel/exit.c:868
       SYSC_exit kernel/exit.c:934 [inline]
       SyS_exit+0x1e/0x20 kernel/exit.c:932
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x5e/0xd3

other info that might help us debug this:

Chain exists of:
  event_mutex --> &cpuctx_mutex --> &event->child_mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&event->child_mutex);
                               lock(&cpuctx_mutex);
                               lock(&event->child_mutex);
  lock(event_mutex);

 *** DEADLOCK ***

2 locks held by syz-executor706/7995:
 #0:  (&ctx->mutex){+.+.}, at: [<ffffffff8165a57e>] perf_event_release_kernel+0x1fe/0x8a0 kernel/events/core.c:4404
 #1:  (&event->child_mutex){+.+.}, at: [<ffffffff8165a588>] perf_event_release_kernel+0x208/0x8a0 kernel/events/core.c:4405

stack backtrace:
CPU: 0 PID: 7995 Comm: syz-executor706 Not tainted 4.14.298-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258
 check_prev_add kernel/locking/lockdep.c:1905 [inline]
 check_prevs_add kernel/locking/lockdep.c:2022 [inline]
 validate_chain kernel/locking/lockdep.c:2464 [inline]
 __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 __mutex_lock_common kernel/locking/mutex.c:756 [inline]
 __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
 perf_trace_destroy+0x23/0xf0 kernel/trace/trace_event_perf.c:234
 _free_event+0x321/0xe20 kernel/events/core.c:4246
 free_event+0x32/0x40 kernel/events/core.c:4273
 perf_event_release_kernel+0x368/0x8a0 kernel/events/core.c:4417
 perf_release+0x33/0x40 kernel/events/core.c:4443
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xa44/0x2850 kernel/exit.c:868
 SyS_exit+0x1e

Crashes (1091):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/11/05 12:23 linux-4.14.y a901bb6c7db7 6d752409 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/04 22:31 linux-4.14.y a901bb6c7db7 6d752409 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/20 15:34 linux-4.14.y 9d5c0b3a8e1a b31320fc .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/12 22:13 linux-4.14.y 9d5c0b3a8e1a 16a9c9e0 .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/09/22 05:49 linux-4.14.y 4edbf74132a4 60af5050 .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/09/14 03:12 linux-4.14.y 65640c873dcf b884348d .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/09/09 17:10 linux-4.14.y 65640c873dcf 90058bdc .config console log report syz C ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/09/09 02:33 linux-4.14.y 65640c873dcf f3027468 .config console log report syz C ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/08/30 01:45 linux-4.14.y e548869f356f d7593c58 .config console log report syz C [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/08/26 23:16 linux-4.14.y e548869f356f e5a303f1 .config console log report syz C ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2021/01/14 18:44 linux-4.14.y f79dc86058bc 468dbb55 .config console log report syz C ci2-linux-4-14
2021/01/07 01:51 linux-4.14.y 1752938529c6 c104d4a3 .config console log report syz C ci2-linux-4-14
2020/12/22 01:54 linux-4.14.y 3f2ecb86cb90 04201c06 .config console log report syz C ci2-linux-4-14
2020/12/21 13:14 linux-4.14.y 3f2ecb86cb90 04201c06 .config console log report syz C ci2-linux-4-14
2020/12/18 02:35 linux-4.14.y 3f2ecb86cb90 04201c06 .config console log report syz C ci2-linux-4-14
2020/11/19 11:16 linux-4.14.y 8961076ed318 0767f13f .config console log report syz C ci2-linux-4-14
2020/11/18 21:58 linux-4.14.y 8961076ed318 0767f13f .config console log report syz C ci2-linux-4-14
2020/11/17 00:15 linux-4.14.y 27ce4f2a6817 1bf9a662 .config console log report syz C ci2-linux-4-14
2020/11/15 12:52 linux-4.14.y 27ce4f2a6817 1bf9a662 .config console log report syz C ci2-linux-4-14
2020/11/15 09:28 linux-4.14.y 27ce4f2a6817 1bf9a662 .config console log report syz C ci2-linux-4-14
2020/11/12 21:03 linux-4.14.y 27ce4f2a6817 77a55c8e .config console log report syz C ci2-linux-4-14
2020/11/12 20:30 linux-4.14.y 27ce4f2a6817 77a55c8e .config console log report syz C ci2-linux-4-14
2020/11/11 22:16 linux-4.14.y 27ce4f2a6817 cca87986 .config console log report syz C ci2-linux-4-14
2020/11/08 22:29 linux-4.14.y 6b6446efedb2 cba33199 .config console log report syz C ci2-linux-4-14
2020/11/08 21:41 linux-4.14.y 6b6446efedb2 cba33199 .config console log report syz C ci2-linux-4-14
2020/11/08 00:43 linux-4.14.y 6b6446efedb2 cba33199 .config console log report syz C ci2-linux-4-14
2020/11/03 11:48 linux-4.14.y 2b7915014161 cba33199 .config console log report syz C ci2-linux-4-14
2020/11/03 00:48 linux-4.14.y 2b7915014161 7f344fa6 .config console log report syz C ci2-linux-4-14
2020/11/02 23:05 linux-4.14.y 2b7915014161 7f344fa6 .config console log report syz C ci2-linux-4-14
2020/10/31 12:45 linux-4.14.y 2b7915014161 8bc4594f .config console log report syz C ci2-linux-4-14
2020/10/25 02:24 linux-4.14.y 5b7a52cd2eef a1839e81 .config console log report syz C ci2-linux-4-14
2020/10/16 23:43 linux-4.14.y cbfa1702aaf6 6e262c73 .config console log report syz C ci2-linux-4-14
2020/10/14 12:38 linux-4.14.y cbfa1702aaf6 fc7735a2 .config console log report syz C ci2-linux-4-14
2020/10/03 08:57 linux-4.14.y cbfa1702aaf6 2653fa43 .config console log report syz C ci2-linux-4-14
2020/09/12 07:57 linux-4.14.y 458a534cac0c 79fb24e2 .config console log report syz C ci2-linux-4-14
2020/09/07 21:17 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config console log report syz C ci2-linux-4-14
2020/09/07 18:46 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config console log report syz C ci2-linux-4-14
2020/09/07 07:11 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config console log report syz C ci2-linux-4-14
2020/09/07 03:15 linux-4.14.y 2f166cdcf8a9 abf9ba4f .config console log report syz C ci2-linux-4-14
2020/07/31 21:16 linux-4.14.y 7f2c5eb458b8 8df85ed9 .config console log report syz C ci2-linux-4-14
2020/02/03 13:46 linux-4.14.y 9fa690a2a016 93e5e335 .config console log report syz C ci2-linux-4-14
2020/08/03 11:50 linux-4.14.y 7f2c5eb458b8 96dd3623 .config console log report syz ci2-linux-4-14
2023/02/25 02:12 linux-4.14.y 1e61bd26fa2c ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/02/21 04:43 linux-4.14.y a8ad60f2af58 2414209c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/02/15 15:35 linux-4.14.y a8ad60f2af58 6be0f1f5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/02/14 11:30 linux-4.14.y a8ad60f2af58 93ae7e0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/02/10 15:54 linux-4.14.y a8ad60f2af58 e29a17f5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/02/01 21:01 linux-4.14.y 3949d1610004 9a6f477c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/27 15:24 linux-4.14.y 3949d1610004 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/22 07:01 linux-4.14.y 97205fccccdc cc0f9968 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/19 01:23 linux-4.14.y 97205fccccdc 4620c2d9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/18 06:29 linux-4.14.y c4215ee4771b 42660d9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/12 00:33 linux-4.14.y c4215ee4771b 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/12 00:28 linux-4.14.y c4215ee4771b 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2023/01/10 11:25 linux-4.14.y c4215ee4771b 48bc529a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/29 00:51 linux-4.14.y c4215ee4771b 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/28 04:00 linux-4.14.y c4215ee4771b 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/28 00:06 linux-4.14.y c4215ee4771b 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/27 19:23 linux-4.14.y c4215ee4771b 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/22 19:39 linux-4.14.y c4215ee4771b 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/22 01:04 linux-4.14.y c4215ee4771b 4067838e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/20 06:02 linux-4.14.y c4215ee4771b c52b2efb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/20 02:29 linux-4.14.y c4215ee4771b c52b2efb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/18 00:58 linux-4.14.y c4215ee4771b 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/16 23:56 linux-4.14.y c4215ee4771b 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/16 16:13 linux-4.14.y c4215ee4771b 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/16 05:35 linux-4.14.y c4215ee4771b 6f9c033e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/12/02 02:25 linux-4.14.y 179ef7fe8677 e080de16 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/23 19:32 linux-4.14.y e911713e40ca 52fdf57a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/21 12:08 linux-4.14.y e911713e40ca 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/11 07:27 linux-4.14.y e911713e40ca f42ee5d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/10 22:23 linux-4.14.y e911713e40ca 3ead01ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/03 07:36 linux-4.14.y a85772d7ba90 7a2ebf95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/03 05:09 linux-4.14.y a85772d7ba90 7a2ebf95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/11/01 10:32 linux-4.14.y 41f36d7859a7 a1d8560a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/28 12:44 linux-4.14.y 41f36d7859a7 8168b69e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/27 13:43 linux-4.14.y 41f36d7859a7 5c716ff6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/24 20:30 linux-4.14.y 9d5c0b3a8e1a faae2fda .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/13 18:43 linux-4.14.y 9d5c0b3a8e1a adf90437 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/12 13:36 linux-4.14.y 9d5c0b3a8e1a 16a9c9e0 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/09 01:19 linux-4.14.y 9d5c0b3a8e1a aea5da89 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/05 23:30 linux-4.14.y 9d5c0b3a8e1a 2c6543ad .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/10/01 18:43 linux-4.14.y 9d5c0b3a8e1a feb56351 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2022/09/23 05:53 linux-4.14.y 4edbf74132a4 0042f2b4 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 possible deadlock in perf_event_release_kernel
2021/01/17 14:07 linux-4.14.y 2762b48e9611 813be542 .config console log report info ci2-linux-4-14
2020/02/01 09:27 linux-4.14.y 9fa690a2a016 0eb59c27 .config console log report ci2-linux-4-14
* Struck through repros no longer work on HEAD.