syzbot


INFO: rcu detected stall in addrconf_rs_timer (3)
Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+c22c6b9dce8e773ddcb6@syzkaller.appspotmail.com
Fix commit: d9e15a273306 pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM
First crash: 764d, last: 720d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: rcu detected stall in corrupted (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit d9e15a2733067c9328fb56d98fe8e574fa19ec31
Author: Eric Dumazet <edumazet@google.com>
Date: Mon Jan 6 14:10:39 2020 +0000

  pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM

similar bugs (6):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in addrconf_rs_timer (2) 362 798d 820d 14/22 fixed on 2019/10/21 12:31
linux-4.14 INFO: rcu detected stall in addrconf_rs_timer C error 220 461d 824d 0/1 upstream: reported C repro on 2019/09/06 14:33
upstream INFO: rcu detected stall in addrconf_rs_timer 38 1084d 1180d 0/22 closed as dup on 2019/01/02 16:33
linux-4.19 INFO: rcu detected stall in addrconf_rs_timer 45 812d 824d 0/1 auto-closed as invalid on 2019/12/17 18:46
linux-4.19 INFO: rcu detected stall in addrconf_rs_timer (2) 5 462d 536d 0/1 auto-closed as invalid on 2020/12/31 12:17
upstream INFO: rcu detected stall in addrconf_rs_timer (4) C error error 121 38d 492d 0/22 upstream: reported C repro on 2020/08/03 16:25

Sample crash report:

Crashes (81):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2019/12/20 02:24 net-next a1ec57c02020 36650b4b .config log report syz C
ci-qemu-upstream 2019/11/29 12:44 upstream 81b6b96475ac d29b9e84 .config log report
ci-qemu-upstream 2019/11/29 12:06 upstream 81b6b96475ac d29b9e84 .config log report
ci-qemu-upstream 2019/11/29 11:03 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 11:03 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 11:03 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 11:02 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 11:01 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:59 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:59 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:57 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:57 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:53 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:49 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:49 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:48 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:47 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:44 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:43 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:41 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:40 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:39 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:38 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:33 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:33 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:32 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:30 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:27 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:27 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:24 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:23 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:22 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:20 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:19 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:19 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:18 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:14 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:10 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:10 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:06 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-qemu-upstream 2019/11/29 10:06 upstream 81b6b96475ac 4f7e1d0f .config log report
ci-upstream-kasan-gce-smack-root 2019/11/13 12:40 upstream 0e3f1ad80fc8 048f2d49 .config log report
ci-upstream-kasan-gce-smack-root 2019/11/13 05:28 upstream 100d46bd72ec 048f2d49 .config log report
ci-upstream-kasan-gce-smack-root 2019/11/05 08:09 upstream a99d8080aaf3 76630fc9 .config log report
ci-qemu-upstream-386 2019/12/04 10:14 upstream 63de37476ebd 0ecb9746 .config log report