syzbot


possible deadlock in perf_event_ctx_lock_nested (2)
Status: upstream: reported syz repro on 2020/10/20 10:26
Reported-by: syzbot+0f6f2030b58054a9a2aa@syzkaller.appspotmail.com
First crash: 333d, last: 25d
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 1373d 1422d 0/22 auto-closed as invalid on 2019/02/22 10:22
linux-4.19 possible deadlock in perf_event_ctx_lock_nested 1 163d 163d 0/1 auto-closed as invalid on 2021/08/06 16:06
upstream possible deadlock in perf_event_ctx_lock_nested (2) 2 83d 124d 0/22 upstream: reported on 2021/05/17 11:17
linux-4.14 possible deadlock in perf_event_ctx_lock_nested 1 473d 473d 0/1 auto-closed as invalid on 2020/09/30 09:36

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2021/08/24 09:02 linux-4.14.y 162b95d01320 ff4a3345 .config log report syz
ci2-linux-4-14 2021/07/25 04:21 linux-4.14.y 964f3712e6a7 ff4a3345 .config log report syz
ci2-linux-4-14 2021/06/25 01:03 linux-4.14.y cfb41ef9deb1 ff4a3345 .config log report syz
ci2-linux-4-14 2021/05/26 00:06 linux-4.14.y 96afcb20f36f ff4a3345 .config log report syz
ci2-linux-4-14 2021/04/25 23:37 linux-4.14.y cf256fbcbe34 ff4a3345 .config log report syz
ci2-linux-4-14 2021/02/25 06:26 linux-4.14.y 3242aa3a635c ff4a3345 .config log report syz
ci2-linux-4-14 2021/01/18 15:44 linux-4.14.y 2762b48e9611 ff4a3345 .config log report syz
ci2-linux-4-14 2020/12/19 11:51 linux-4.14.y 3f2ecb86cb90 ff4a3345 .config log report syz
ci2-linux-4-14 2020/11/19 11:27 linux-4.14.y 8961076ed318 ff4a3345 .config log report syz
Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/10/20 11:03 linux-4.14.y cbfa1702aaf6 ff4a3345 .config log report syz
ci2-linux-4-14 2021/03/26 01:15 linux-4.14.y 670d6552eda8 6a383ecf .config log report info possible deadlock in perf_event_ctx_lock_nested
ci2-linux-4-14 2020/10/20 10:25 linux-4.14.y cbfa1702aaf6 ff4a3345 .config log report info