syzbot


INFO: rcu detected stall in mld_ifc_timer_expire
Status: fixed on 2019/10/09 10:54
Reported-by: syzbot+bc6297c11f19ee807dc2@syzkaller.appspotmail.com
Fix commit: d4d6ec6d sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
First crash: 655d, last: 646d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: no output from test machine (log)
Repro: C syz .config
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in mld_ifc_timer_expire (3) 1 381d 381d 0/22 auto-closed as invalid on 2020/09/04 20:48
linux-4.19 INFO: rcu detected stall in mld_ifc_timer_expire C done 33 643d 655d 1/1 fixed on 2019/12/07 19:18
linux-4.14 INFO: rcu detected stall in mld_ifc_timer_expire C done 9 645d 654d 1/1 fixed on 2019/12/06 15:57
upstream INFO: rcu detected stall in mld_ifc_timer_expire (2) 1 566d 566d 0/22 closed as invalid on 2019/12/04 14:04

Sample crash report:

Crashes (152):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2019/09/14 19:28 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/14 17:53 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-root 2019/09/14 17:40 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce 2019/09/14 17:04 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/14 15:19 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-root 2019/09/14 13:03 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce 2019/09/14 09:06 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-root 2019/09/14 08:44 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce 2019/09/14 07:21 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/14 07:11 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce 2019/09/14 05:41 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-root 2019/09/14 04:10 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/14 04:10 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce 2019/09/14 02:47 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-root 2019/09/13 23:15 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce 2019/09/13 15:01 upstream 505a8ec7 40fa42bc .config log report syz C
ci-upstream-kasan-gce-root 2019/09/13 14:30 upstream 505a8ec7 40fa42bc .config log report syz C
ci-upstream-kasan-gce 2019/09/13 10:28 upstream 505a8ec7 40fa42bc .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/13 07:11 upstream 505a8ec7 40fa42bc .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/13 01:02 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce 2019/09/12 23:38 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/12 19:05 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce 2019/09/12 18:14 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/12 17:00 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/12 12:24 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce 2019/09/12 12:21 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/12 10:39 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/12 07:27 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/12 01:48 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce 2019/09/12 01:35 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/11 19:02 upstream 3120b9a6 a60cb4cd .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/11 11:39 upstream 3120b9a6 a60cb4cd .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/09/06 16:14 upstream 3b47fd5c 040fda58 .config log report syz C
ci-upstream-kasan-gce-386 2019/09/14 20:06 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-386 2019/09/14 14:27 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-386 2019/09/14 05:34 upstream a7f89616 32d59357 .config log report syz C
ci-upstream-kasan-gce-386 2019/09/13 19:07 upstream 505a8ec7 40fa42bc .config log report syz C
ci-upstream-kasan-gce-386 2019/09/12 22:01 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce-386 2019/09/12 19:19 upstream ad32b480 0b7672ee .config log report syz C
ci-upstream-kasan-gce-386 2019/09/12 06:32 upstream 3120b9a6 f4e53c10 .config log report syz C
ci-upstream-kasan-gce-386 2019/09/11 19:02 upstream 3120b9a6 a60cb4cd .config log report syz C
ci-upstream-net-this-kasan-gce 2019/09/10 20:03 net c8dc5595 a60cb4cd .config log report syz C
ci-upstream-net-kasan-gce 2019/09/16 01:24 net-next a3d3c74d 32d59357 .config log report syz C
ci-upstream-net-kasan-gce 2019/09/15 11:02 net-next 1ba569fc 32d59357 .config log report syz C
ci-upstream-net-kasan-gce 2019/09/15 09:12 net-next 1ba569fc 32d59357 .config log report syz C
ci-upstream-net-kasan-gce 2019/09/14 19:15 net-next 1ba569fc 32d59357 .config log report syz C
ci-upstream-net-kasan-gce 2019/09/11 19:54 net-next 747f3cf4 a60cb4cd .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/09/14 17:22 linux-next 6d028043 32d59357 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/09/14 08:35 linux-next 6d028043 32d59357 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/09/11 11:14 linux-next 6d028043 a60cb4cd .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/09/13 08:36 upstream 505a8ec7 40fa42bc .config log report
ci-upstream-kasan-gce 2019/09/13 05:33 upstream 505a8ec7 40fa42bc .config log report
ci-upstream-kasan-gce-root 2019/09/11 20:59 upstream 3120b9a6 f4e53c10 .config log report
ci-upstream-kasan-gce 2019/09/11 17:55 upstream 3120b9a6 a60cb4cd .config log report
ci-upstream-kasan-gce 2019/09/09 05:59 upstream f74c2bb9 a60cb4cd .config log report
ci-upstream-kasan-gce 2019/09/06 20:44 upstream 04459710 a60cb4cd .config log report
ci-upstream-kasan-gce-386 2019/09/13 20:37 upstream a7f89616 32d59357 .config log report
ci-upstream-net-this-kasan-gce 2019/09/09 07:47 net 28abe579 a60cb4cd .config log report
ci-upstream-net-this-kasan-gce 2019/09/06 15:18 net 7bdf4de1 040fda58 .config log report
ci-upstream-net-kasan-gce 2019/09/15 07:02 net-next 1ba569fc 32d59357 .config log report
ci-upstream-net-kasan-gce 2019/09/13 17:17 net-next 022c10d6 40fa42bc .config log report
ci-upstream-net-kasan-gce 2019/09/13 14:09 net-next 022c10d6 40fa42bc .config log report
ci-upstream-net-kasan-gce 2019/09/09 00:16 net-next 6703a605 a60cb4cd .config log report
ci-upstream-net-kasan-gce 2019/09/08 19:04 net-next 6703a605 a60cb4cd .config log report
ci-upstream-net-kasan-gce 2019/09/08 16:27 net-next 6703a605 a60cb4cd .config log report
ci-upstream-net-kasan-gce 2019/09/07 23:42 net-next 742ca781 a60cb4cd .config log report