syzbot


INFO: rcu detected stall in sock_close (3)
Status: upstream: reported C repro on 2020/07/08 22:42
Reported-by: syzbot+4168fa4c45be33afa73c@syzkaller.appspotmail.com
First crash: 389d, last: 219d

Cause bisection: introduced by (bisect log) :
commit 5e9eeccc58f3e6bcc99b929670665d2ce047e9c9
Author: Tuong Lien <tuong.t.lien@dektech.com.au>
Date: Wed Jun 3 05:06:01 2020 +0000

  tipc: fix NULL pointer dereference in streaming

Crash: INFO: rcu detected stall in tipc_release (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit 98b89b649fce39dacb9dc036d6d0fdb8caff73f7
Author: Jens Axboe <axboe@kernel.dk>
Date: Fri Oct 9 22:03:01 2020 +0000

  signal: kill JOBCTL_TASK_WORK

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sock_close 6 597d 598d 0/22 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in sock_close (2) 1 562d 562d 0/22 closed as invalid on 2020/01/09 08:13

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2020/07/08 14:30 upstream 7cc2a8ea1048 51095195 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/07/09 10:31 upstream 0bddd227f3dc bc238812 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/08 11:36 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/29 19:26 upstream 4e99b32169e8 a2cdad9d .config log report