syzbot


INFO: rcu detected stall in do_signal (4)
Status: upstream: reported C repro on 2019/12/23 09:45
Reported-by: syzbot+7e600afa7f6059f9a30e@syzkaller.appspotmail.com
First crash: 671d, last: 437d

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

Fix bisection: failed (bisect log)
similar bugs (8):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in do_signal (3) 2 683d 683d 0/22 closed as invalid on 2019/12/04 14:04
linux-4.19 INFO: rcu detected stall in do_signal (2) 1 643d 643d 0/1 auto-closed as invalid on 2020/05/11 22:29
upstream INFO: rcu detected stall in do_signal 2 1082d 1101d 0/22 auto-closed as invalid on 2019/04/28 15:41
linux-4.14 INFO: rcu detected stall in do_signal (2) 1 227d 227d 0/1 auto-closed as invalid on 2021/07/02 05:05
linux-4.19 INFO: rcu detected stall in do_signal 1 904d 904d 0/1 auto-closed as invalid on 2019/10/23 10:40
linux-4.14 INFO: rcu detected stall in do_signal 7 354d 668d 0/1 auto-closed as invalid on 2021/02/24 19:41
linux-4.19 INFO: rcu detected stall in do_signal (3) 6 191d 492d 0/1 auto-closed as invalid on 2021/08/06 21:07
upstream INFO: rcu detected stall in do_signal (2) 3 687d 687d 0/22 closed as invalid on 2019/11/29 14:24

Sample crash report:

Crashes (30):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2019/12/19 09:30 upstream 2187f215ebaa 79b211f7 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/12/27 13:29 linux-next 7ddd09fc4b74 be5c2c81 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/05 16:58 upstream 442489c21923 b7129355 .config log report
ci-upstream-kasan-gce-selinux-root 2020/08/04 13:09 upstream bcf876870b95 196277c4 .config log report
ci-upstream-kasan-gce 2020/07/19 16:48 upstream f932d58abc38 9c812472 .config log report
ci-upstream-kasan-gce 2020/07/17 05:46 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce-selinux-root 2020/07/16 22:55 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce 2020/07/06 02:49 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/30 08:21 upstream 4e99b32169e8 a2cdad9d .config log report
ci-upstream-kasan-gce-root 2020/06/29 19:40 upstream 4e99b32169e8 a2cdad9d .config log report
ci-upstream-kasan-gce-smack-root 2020/06/24 07:58 upstream 7ae77150d94d 54566aff .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/16 20:41 upstream 7ae77150d94d 559fbe2d .config log report
ci-upstream-kasan-gce-root 2020/06/02 22:37 upstream f359287765c0 52fd7b7d .config log report
ci-upstream-kasan-gce-smack-root 2020/05/11 10:51 upstream 2ef96a5bb12b f8f57555 .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/07 08:55 upstream fb279f4e2386 fd2a5f28 .config log report
ci-upstream-kasan-gce-root 2020/02/04 00:34 upstream 754beeec1d90 93e5e335 .config log report
ci-upstream-kasan-gce-root 2020/01/14 17:28 upstream b3a987b0264d 32881205 .config log report
ci-upstream-kasan-gce-root 2020/01/14 11:29 upstream b3a987b0264d 32881205 .config log report
ci-upstream-kasan-gce-smack-root 2020/01/08 10:54 upstream ae6088216ce4 6738e0b3 .config log report
ci-upstream-kasan-gce-root 2019/12/27 18:54 upstream 46cf053efec6 be5c2c81 .config log report
ci-upstream-kasan-gce-root 2019/12/27 07:16 upstream 46cf053efec6 be5c2c81 .config log report
ci-upstream-kasan-gce-root 2019/12/26 23:09 upstream 46cf053efec6 be5c2c81 .config log report
ci-upstream-kasan-gce-root 2019/12/26 04:58 upstream 46cf053efec6 be5c2c81 .config log report
ci-upstream-kasan-gce-root 2019/12/16 04:08 upstream 07c4b9e9f71a eef6e580 .config log report
ci-upstream-kasan-gce-386 2020/07/02 19:22 upstream cd77006e01b3 bed10395 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/07/20 04:17 linux-next 4c43049f19a2 9c812472 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/03/07 08:44 linux-next 770fbb32d34e fd2a5f28 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/02/03 14:24 linux-next 2747d5fdab78 93e5e335 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/01/07 17:52 linux-next 264673852033 1bcd407e .config log report
ci-upstream-linux-next-kasan-gce-root 2019/12/25 23:04 linux-next 7ddd09fc4b74 be5c2c81 .config log report