syzbot


possible deadlock in ipv6_sock_mc_close
Status: upstream: reported C repro on 2021/03/01 13:49
Reported-by: syzbot+e2fa57709a385e6db10f@syzkaller.appspotmail.com
First crash: 54d, last: 15d

Cause bisection: introduced by (bisect log) :
commit c8e88e3aa73889421461f878cd569ef84f231ceb
Author: Chuck Lever <chuck.lever@oracle.com>
Date: Tue Nov 3 20:06:04 2020 +0000

  NFSD: Replace READ* macros in nfsd4_decode_layoutget()

Crash: SYZFAIL: wrong response packet (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/03/02 09:43 18m pabeni@redhat.com https://github.com/pabeni/mptcp.git deadlock_fixup OK

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/04/01 06:28 net 622d1369 4c37c133 .config log report syz C
Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/02/28 04:49 net eee7ede6 4c37c133 .config log report syz C possible deadlock in ipv6_sock_mc_close
ci-upstream-net-this-kasan-gce 2021/04/01 12:38 net d47ec7a0 6a81331a .config log report info possible deadlock in ipv6_sock_mc_close
ci-upstream-net-this-kasan-gce 2021/02/28 03:48 net eee7ede6 4c37c133 .config log report info possible deadlock in ipv6_sock_mc_close
ci-upstream-net-kasan-gce 2021/04/08 13:55 net-next 3cd52c1e 6a81331a .config log report info possible deadlock in ipv6_sock_mc_close
ci-upstream-net-kasan-gce 2021/04/08 01:17 net-next 0b35e0de 6a81331a .config log report info possible deadlock in ipv6_sock_mc_close
ci-upstream-net-kasan-gce 2021/04/08 00:54 net-next 0b35e0de 6a81331a .config log report info possible deadlock in ipv6_sock_mc_close