syzbot


possible deadlock in inet_csk_accept
Status: fixed on 2020/04/15 17:19
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 06669ea346e4 net: memcg: fix lockdep splat in inet_csk_accept()
First crash: 638d, last: 636d

Cause bisection: introduced by (bisect log) :
commit d752a4986532cb6305dfd5290a614cde8072769d
Author: Shakeel Butt <shakeelb@google.com>
Date: Tue Mar 10 05:16:06 2020 +0000

  net: memcg: late association of sock to memcg

Crash: possible deadlock in inet_csk_accept (log)
Repro: C syz .config

Sample crash report:

Crashes (992):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2020/03/11 04:59 net ece0d7bd7461 35f53e45 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/03/12 06:37 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 05:52 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 05:41 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 04:40 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 04:00 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 03:09 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 02:18 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 01:29 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/12 00:29 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 23:45 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 23:07 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 23:00 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 21:57 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 20:57 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 20:56 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 19:54 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 18:58 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 18:11 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 17:47 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 17:30 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 17:14 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 16:54 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 16:35 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 16:17 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 15:58 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 15:38 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 15:20 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 14:56 net 2165fdf4bc2d e7caca8e .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 14:09 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 13:57 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 12:55 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 11:57 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 11:06 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 10:54 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 09:29 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 09:01 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 08:19 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 08:07 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 07:02 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 07:01 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 05:56 net ece0d7bd7461 35f53e45 .config log report
ci-upstream-net-this-kasan-gce 2020/03/11 00:10 net ece0d7bd7461 35f53e45 .config log report