syzbot


possible deadlock in perf_event_ctx_lock_nested (2)
Status: upstream: reported on 2021/05/17 11:17
Reported-by: syzbot+4b71bb3365e7d5228913@syzkaller.appspotmail.com
First crash: 159d, last: 4h13m
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in perf_event_ctx_lock_nested 8914 1403d 1452d 0/22 auto-closed as invalid on 2019/02/22 10:22
linux-4.19 possible deadlock in perf_event_ctx_lock_nested 1 193d 193d 0/1 auto-closed as invalid on 2021/08/06 16:06
linux-4.14 possible deadlock in perf_event_ctx_lock_nested (2) syz 3 25d 363d 0/1 upstream: reported syz repro on 2020/10/20 10:26
linux-4.14 possible deadlock in perf_event_ctx_lock_nested 1 503d 503d 0/1 auto-closed as invalid on 2020/09/30 09:36

Sample crash report:

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/06/27 17:06 upstream 625acffd7ae2 9d2ab5df .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-kasan-gce-root 2021/05/12 07:11 upstream 88b06399c9c7 b3c3bb8e .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-linux-next-kasan-gce-root 2021/10/19 01:15 linux-next 60e8840126bd 24dc29db .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-linux-next-kasan-gce-root 2021/10/19 01:13 linux-next 60e8840126bd 24dc29db .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-linux-next-kasan-gce-root 2021/10/19 00:32 linux-next 60e8840126bd 24dc29db .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-linux-next-kasan-gce-root 2021/10/15 13:28 linux-next 7c832d2f9b95 0c5d9412 .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-linux-next-kasan-gce-root 2021/10/15 12:44 linux-next 7c832d2f9b95 0c5d9412 .config log report info possible deadlock in perf_event_ctx_lock_nested
ci-upstream-linux-next-kasan-gce-root 2021/10/13 20:47 linux-next 8006b911c90a 5462d470 .config log report info possible deadlock in perf_event_ctx_lock_nested