syzbot


INFO: task hung in ext4_fill_super
Status: upstream: reported C repro on 2021/06/16 09:56
Reported-by: syzbot+c9ff4822a62eee994ea3@syzkaller.appspotmail.com
First crash: 134d, last: 9d21h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in ext4_fill_super (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in ext4_fill_super C 8 3d12h 131d 0/1 upstream: reported C repro on 2021/06/15 09:47
linux-4.14 INFO: task hung in ext4_fill_super C 3 15d 76d 0/1 upstream: reported C repro on 2021/08/09 15:53
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/06 07:45 18m paskripkin@gmail.com patch upstream OK
2021/08/05 14:26 18m paskripkin@gmail.com patch upstream OK
2021/06/16 16:22 13m paskripkin@gmail.com https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/76/10176/6 report log

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-root 2021/10/15 03:53 upstream ec681c53f8d2 1ba81399 .config log report syz C
ci-upstream-kasan-gce-root 2021/09/15 03:27 upstream 3ca706c189db 1ba81399 .config log report syz C
ci-upstream-kasan-gce-root 2021/08/15 21:26 upstream ecf93431963a 1ba81399 .config log report syz C
ci-upstream-kasan-gce-root 2021/07/16 12:31 upstream d936eb238744 1ba81399 .config log report syz C
Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/06/12 09:38 upstream f21b807c3cf8 1ba81399 .config log report syz C INFO: task hung in ext4_fill_super
ci-upstream-kasan-gce-root 2021/06/16 11:53 upstream 94f0b2d4a1d0 c06f97ad .config log report info INFO: task hung in ext4_fill_super
ci-upstream-kasan-gce-root 2021/06/14 10:18 upstream 009c9aa5be65 1ba81399 .config log report info INFO: task hung in ext4_fill_super
ci-upstream-kasan-gce-root 2021/06/12 06:43 upstream f21b807c3cf8 1ba81399 .config log report info INFO: task hung in ext4_fill_super