syzbot


INFO: rcu detected stall in sys_exit_group (7)
Status: upstream: reported C repro on 2021/10/15 18:41
Reported-by: syzbot+1c1c0d391f04584c1611@syzkaller.appspotmail.com
First crash: 75d, last: 23d

Cause bisection: introduced by (bisect log) [no-op commit]:
commit fcd29ad17c6ff885dfae58f557e9323941e63ba2
Author: Feras Daoud <ferasda@mellanox.com>
Date: Thu Aug 9 06:55:21 2018 +0000

  net/mlx5: Add Fast teardown support

Crash: general protection fault in batadv_iv_ogm_queue_add (log)
Repro: C syz .config
similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_exit_group (6) C 4 426d 433d 21/22 fixed on 2021/03/10 01:48
upstream INFO: rcu detected stall in sys_exit_group (2) 56 728d 729d 0/22 closed as invalid on 2019/12/04 14:14
upstream INFO: rcu detected stall in sys_exit_group (3) 8 693d 693d 0/22 closed as invalid on 2020/01/08 05:23
upstream INFO: rcu detected stall in sys_exit_group (4) 13 693d 693d 0/22 closed as invalid on 2020/01/09 08:13
upstream INFO: rcu detected stall in sys_exit_group (5) 1 614d 614d 0/22 auto-closed as invalid on 2020/06/25 07:58
upstream INFO: rcu detected stall in sys_exit_group C done 1 809d 805d 14/22 fixed on 2019/10/09 10:54

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/10/11 19:51 upstream 64570fbc14f8 838e7e2c .config log report syz C INFO: rcu detected stall in sys_exit_group
ci-upstream-kasan-gce 2021/11/08 14:41 upstream 6b75d88fa81b d29682f1 .config log report info INFO: rcu detected stall in sys_exit_group
ci-upstream-kasan-gce-selinux-root 2021/09/16 16:23 upstream ff1ffd71d5f0 aae492f2 .config log report info INFO: rcu detected stall in sys_exit_group