syzbot


INFO: task hung in disconnect_work
Status: upstream: reported C repro on 2021/02/16 16:57
Reported-by: syzbot+060f9ce2b428f88a288f@syzkaller.appspotmail.com
First crash: 254d, last: 9d10h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in addrconf_dad_work (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 disconnect_work 1 237d 237d 0/1 auto-closed as invalid on 2021/07/02 18:09
linux-4.14 INFO: task hung in disconnect_work C 1 39m 364d 0/1 upstream: reported C repro on 2020/10/28 14:37

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 2021/10/19 03:53 upstream 519d81956ee2 98682e5e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/09/19 01:33 upstream d4d016caa4b8 98682e5e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/08/20 01:07 upstream d992fe5318d8 98682e5e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/07/18 01:37 upstream 1d67c8d993ba 98682e5e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/06/17 14:00 upstream 70585216fe77 98682e5e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/05/18 13:08 upstream 8ac91e6c6033 98682e5e .config log report syz C
ci-upstream-kasan-gce-selinux-root 2021/03/18 14:24 upstream 6417f03132a6 98682e5e .config log report syz C
Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/02/16 13:57 upstream f40ddce88593 98682e5e .config log report syz C INFO: task hung in disconnect_work
ci-upstream-linux-next-kasan-gce-root 2021/04/18 03:58 linux-next 1216f02e46a4 7e2b734b .config log report syz C INFO: task hung in disconnect_work
ci-upstream-linux-next-kasan-gce-root 2021/03/24 06:37 linux-next d949689e7383 e613994b .config log report syz C INFO: task hung in disconnect_work