syzbot


WARNING: suspicious RCU usage in tcp_disconnect
Status: fixed on 2021/03/10 01:48
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 13a9499e8333 mptcp: fix locking in mptcp_disconnect()
First crash: 329d, last: 328d

Cause bisection: introduced by (bisect log) :
commit 76e2a55d16259b51116767b28b19d759bff43f72
Author: Paolo Abeni <pabeni@redhat.com>
Date: Tue Jan 12 17:25:24 2021 +0000

  mptcp: better msk-level shutdown.

Crash: WARNING: suspicious RCU usage in tcp_disconnect (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING: suspicious RCU usage in tcp_disconnect C 1309 22d 946d 0/1 upstream: reported C repro on 2019/05/07 08:03

Sample crash report:

Crashes (25):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/01/13 13:59 net c8a8ead01736 a945f0a3 .config log report syz C
ci-upstream-net-this-kasan-gce 2021/01/14 23:51 net 5b55299eed78 65a7a854 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/14 16:56 net 5b55299eed78 65a7a854 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/14 16:01 net 5b55299eed78 65a7a854 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/14 06:03 net a95d25dd7b94 269d24e8 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/14 00:57 net a95d25dd7b94 269d24e8 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/14 00:48 net a95d25dd7b94 269d24e8 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/14 00:12 net a95d25dd7b94 269d24e8 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 11:34 net c8a8ead01736 a945f0a3 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 11:29 net c8a8ead01736 a945f0a3 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 11:27 net c8a8ead01736 a945f0a3 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 11:15 net c8a8ead01736 a945f0a3 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 10:48 net c8a8ead01736 a945f0a3 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 07:48 net c8a8ead01736 0cdd6185 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 07:43 net c8a8ead01736 0cdd6185 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 07:36 net c8a8ead01736 0cdd6185 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 07:03 net c8a8ead01736 0cdd6185 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/13 06:55 net c8a8ead01736 0cdd6185 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 23:13 linux-next 9152a993930d 65a7a854 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 20:16 linux-next 9152a993930d 65a7a854 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 18:17 linux-next 9152a993930d 65a7a854 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 17:52 linux-next 9152a993930d 65a7a854 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 12:01 linux-next 9152a993930d 269d24e8 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 09:47 linux-next 9152a993930d 269d24e8 .config log report info
ci-upstream-linux-next-kasan-gce-root 2021/01/14 07:59 linux-next 9152a993930d 269d24e8 .config log report info