syzbot


possible deadlock in mptcp_close
Status: upstream: reported C repro on 2021/09/20 22:04
Reported-by: syzbot+1dd53f7a89b299d59eaf@syzkaller.appspotmail.com
Fix commit: 49054556289e net: introduce and use lock_sock_fast_nested()
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-riscv64]
First crash: 72d, last: 61d

Cause bisection: introduced by (bisect log) :
commit 2dcb96bacce36021c2f3eaae0cef607b5bb71ede
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Sat Sep 18 12:42:35 2021 +0000

  net: core: Correct the sock::sk_lock.owned lockdep annotations

Crash: possible deadlock in mptcp_close (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/09/22 19:58 13m pabeni@redhat.com patch net OK
2021/09/22 17:56 5m pabeni@redhat.com patch net error

Sample crash report:

Crashes (931):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/09/29 21:58 net d88fd1b546ff be530f6c .config log report syz C possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/20 05:45 net e30cd812dffa 70b76c1d .config log report syz C possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 23:35 net-next ef91abfb20c7 be530f6c .config log report syz C possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/10/01 12:04 upstream 02d5e016800d 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/30 23:32 upstream 02d5e016800d 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/30 22:19 upstream 02d5e016800d 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/30 21:23 upstream 02d5e016800d 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/30 20:22 upstream 02d5e016800d 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/30 16:08 upstream 02d5e016800d be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/29 19:40 upstream 02d5e016800d be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/29 18:35 upstream 02d5e016800d be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/29 17:34 upstream 02d5e016800d be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/29 16:52 upstream 02d5e016800d be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/29 14:50 upstream a4e6f95a891a be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/29 07:35 upstream a4e6f95a891a d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/29 07:23 upstream a4e6f95a891a d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/29 06:11 upstream a4e6f95a891a d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/29 04:59 upstream a4e6f95a891a d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/29 03:45 upstream d33bec7b3dfa d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/29 02:50 upstream d33bec7b3dfa d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/28 22:01 upstream d33bec7b3dfa d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/28 19:11 upstream d33bec7b3dfa d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/28 17:56 upstream d33bec7b3dfa d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-smack-root 2021/09/28 16:52 upstream d33bec7b3dfa d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/28 15:20 upstream 0513e464f900 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-root 2021/09/28 14:12 upstream 0513e464f900 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-kasan-gce-selinux-root 2021/09/28 10:36 upstream 0513e464f900 78494d16 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/30 17:24 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/30 13:07 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/30 11:56 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/30 06:53 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/30 03:34 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/30 00:50 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/29 15:50 net d88fd1b546ff be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/29 12:08 net 4ccb9f03fee7 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/29 10:07 net 4ccb9f03fee7 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/29 01:33 net c894b51e2a23 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/28 21:57 net c894b51e2a23 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/28 16:29 net c894b51e2a23 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/28 13:37 net c894b51e2a23 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-this-kasan-gce 2021/09/20 03:47 net e30cd812dffa 70b76c1d .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/10/01 06:53 net-next 69508d43334e 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/10/01 01:55 net-next 69508d43334e 1d849ab4 .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/30 19:12 net-next 69508d43334e be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/30 15:07 net-next ef91abfb20c7 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/30 10:37 net-next ef91abfb20c7 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/30 05:45 net-next ef91abfb20c7 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/30 01:53 net-next ef91abfb20c7 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 23:01 net-next ef91abfb20c7 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 21:39 net-next b69c99463d41 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 14:23 net-next b69c99463d41 be530f6c .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 13:18 net-next b69c99463d41 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 08:57 net-next b69c99463d41 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-net-kasan-gce 2021/09/29 00:22 net-next b69c99463d41 d82cb927 .config log report info possible deadlock in mptcp_close
ci-upstream-linux-next-kasan-gce-root 2021/09/30 08:07 linux-next c7b4d0e56a1d be530f6c .config log report info possible deadlock in mptcp_close