syzbot


INFO: task hung in __sync_dirty_buffer
Status: upstream: reported C repro on 2021/09/01 20:17
Reported-by: syzbot+91dccab7c64e2850a4e5@syzkaller.appspotmail.com
First crash: 56d, last: 23d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in __sync_dirty_buffer (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 INFO: task hung in __sync_dirty_buffer C 3 29d 390d 0/1 upstream: reported C repro on 2020/09/29 05:34
linux-4.19 INFO: task hung in __sync_dirty_buffer C error 4 33d 378d 0/1 upstream: reported C repro on 2020/10/11 09:03

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 2021/10/01 11:08 upstream 4de593fb965f be2c130d .config log report syz C
Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/08/28 20:15 upstream 64b4fc45bea6 be2c130d .config log report syz C INFO: task hung in __sync_dirty_buffer
ci-upstream-linux-next-kasan-gce-root 2021/08/31 20:01 linux-next 52c7b727581f 7eb7e152 .config log report info INFO: task hung in __sync_dirty_buffer