syzbot


WARNING in inc_nlink (2)
Status: upstream: reported C repro on 2021/04/05 09:25
Reported-by: syzbot+1c8034b9f0e640f9ba45@syzkaller.appspotmail.com
First crash: 111d, last: 9d03h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in inc_nlink (log)
Repro: C syz .config
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in inc_nlink (2) C 48 15d 264d 0/1 upstream: reported C repro on 2020/11/01 15:25
linux-4.19 WARNING in inc_nlink C done 8 339d 488d 1/1 fixed on 2020/09/18 07:23
linux-4.14 WARNING in inc_nlink C done 21 346d 489d 1/1 fixed on 2020/09/11 09:49
linux-4.14 WARNING in inc_nlink (2) C 40 5d21h 260d 0/1 upstream: reported C repro on 2020/11/06 09:55
upstream WARNING in inc_nlink C done 26 376d 479d 17/22 fixed on 2020/09/16 22:51

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/07/15 08:58 upstream 8096acd7442e b3c3bb8e .config log report syz C
Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/05/12 04:57 upstream 88b06399c9c7 b3c3bb8e .config log report syz C WARNING in inc_nlink
ci-upstream-kasan-gce-selinux-root 2021/05/01 18:42 upstream d2b6f8a17919 77e2b668 .config log report syz C WARNING in inc_nlink
ci-upstream-kasan-gce-smack-root 2021/04/09 12:28 upstream 4fa56ad0d12e 6a81331a .config log report syz C WARNING in inc_nlink
ci-upstream-kasan-gce-smack-root 2021/04/04 03:10 upstream 57fbdb15ec42 6a81331a .config log report syz C WARNING in inc_nlink
ci-upstream-kasan-gce-root 2021/04/03 21:47 upstream 57fbdb15ec42 6a81331a .config log report syz C WARNING in inc_nlink
ci-upstream-linux-next-kasan-gce-root 2021/05/13 08:17 linux-next ec85c95b0c90 ed7d41c5 .config log report syz C WARNING in inc_nlink
ci-upstream-linux-next-kasan-gce-root 2021/05/08 08:23 linux-next 869a85b925fc bc5434be .config log report syz C WARNING in inc_nlink
ci-upstream-kasan-gce-root 2021/06/15 07:59 upstream 009c9aa5be65 1ba81399 .config log report info WARNING in inc_nlink
ci-upstream-kasan-gce-root 2021/05/16 13:46 upstream 63d1cb53e26a f54a5c09 .config log report info WARNING in inc_nlink
ci-upstream-kasan-gce-root 2021/04/13 02:36 upstream d434405aaab7 bfeda1b1 .config log report info WARNING in inc_nlink
ci-upstream-linux-next-kasan-gce-root 2021/06/01 17:28 linux-next a1f92694393a 032639db .config log report info WARNING in inc_nlink