syzbot


possible deadlock in send_sigurg (2)
Status: fixed on 2021/03/10 01:48
Reported-by: syzbot+c5e32344981ad9f33750@syzkaller.appspotmail.com
Fix commit: 8d1ddb5e7937 fcntl: Fix potential deadlock in send_sig{io, urg}()
First crash: 463d, last: 408d

Cause bisection: introduced by (bisect log) :
commit e918188611f073063415f40fae568fa4d86d9044
Author: Boqun Feng <boqun.feng@gmail.com>
Date: Fri Aug 7 07:42:20 2020 +0000

  locking: More accurate annotations for read_lock()

Crash: possible deadlock in send_sigurg (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in send_sigurg C done 65 648d 662d 17/22 fixed on 2020/05/10 10:42

Sample crash report:

Crashes (25):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2020/12/13 03:16 upstream 7b1b868e1d91 bca53db9 .config log report syz C
ci-upstream-kasan-gce 2020/11/04 09:57 upstream 4ef8451b3326 cba33199 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/11 12:33 upstream 33dc9614dc20 ba24ffcd .config log report info
ci-upstream-kasan-gce 2020/12/08 17:58 upstream cd796ed33450 a7f7f4a4 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/12/07 11:36 upstream 0477e9288185 1190297f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/29 01:47 upstream 45e885c439e8 a0092f9d .config log report info
ci-upstream-kasan-gce 2020/11/28 11:22 upstream c84e1efae022 486f93ef .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/27 05:37 upstream 85a2c56cb445 5018c946 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/25 08:47 upstream 127c501a03d5 1a1f4bd8 .config log report info
ci-upstream-kasan-gce 2020/11/12 21:22 upstream af5043c89a8e 77a55c8e .config log report info
ci-upstream-kasan-gce 2020/11/09 12:00 upstream f8394f232b1e 64069d48 .config log report info
ci-upstream-kasan-gce 2020/11/04 07:35 upstream 4ef8451b3326 cba33199 .config log report info
ci-upstream-kasan-gce 2020/11/03 01:00 upstream 495023e4e49e 8bc4594f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/01 12:21 upstream c2dc4c073fb7 8bc4594f .config log report info
ci-upstream-kasan-gce 2020/10/31 21:16 upstream bb3540be73ca 8bc4594f .config log report info
ci-upstream-kasan-gce 2020/10/31 13:17 upstream 5fc6b075e165 8bc4594f .config log report info
ci-upstream-kasan-gce 2020/10/31 00:40 upstream 5fc6b075e165 18e33098 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/10/25 02:28 upstream d76913908102 a1839e81 .config log report info
ci-upstream-kasan-gce 2020/10/19 08:57 upstream 7cf726a59435 ff4a3345 .config log report info
ci-upstream-kasan-gce-386 2020/12/09 20:05 upstream a68a0262abda c090b4da .config log report info
ci-upstream-kasan-gce-386 2020/12/08 16:25 upstream cd796ed33450 a7f7f4a4 .config log report info
ci-upstream-kasan-gce-386 2020/11/23 10:28 upstream 418baf2c28f3 0d27f508 .config log report info
ci-upstream-kasan-gce-386 2020/11/17 02:04 upstream 9c87c9f41245 1bf9a662 .config log report info
ci-upstream-kasan-gce-386 2020/11/13 19:14 upstream 585e5b17b92d e1140d25 .config log report info
ci-upstream-kasan-gce-386 2020/11/12 21:07 upstream af5043c89a8e 77a55c8e .config log report info