syzbot


possible deadlock in flush_workqueue
Status: fixed on 2019/12/18 17:48
Reported-by: syzbot+e3f421b94470bd51217c@syzkaller.appspotmail.com
Fix commit: 4df72865 nbd: verify socket is supported during setup
First crash: 281d, last: 188d

Fix bisection: fixed by (bisect log):

commit 4df728651b8a99693c69962d8e5a5b9e5a3bbcc7
Author: Mike Christie <mchristi@redhat.com>
Date: Thu Oct 17 21:27:34 2019 +0000

  nbd: verify socket is supported during setup

similar bugs (5):
Kernel Title Repro Bisected Count Last Reported Patched Status
android-414 possible deadlock in flush_workqueue 1 195d 195d 0/1 auto-closed as invalid on 2020/03/10 11:29
upstream possible deadlock in flush_workqueue (2) C cause+fix 256 148d 582d 16/17 fixed on 2020/01/31 18:49
linux-4.14 possible deadlock in flush_workqueue (2) 3 152d 156d 0/1 auto-closed as invalid on 2020/04/22 20:54
upstream possible deadlock in flush_workqueue C 73762 598d 640d 12/17 fixed on 2018/10/11 14:33
linux-4.19 possible deadlock in flush_workqueue 3 209d 220d 0/1 auto-closed as invalid on 2020/02/25 05:02

Sample crash report:

Crashes (15):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2019/11/05 10:28 linux-4.14.y ddef1e8e 76630fc9 .config log report syz C jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/11/18 09:43 linux-4.14.y 775d01b6 d5696d51 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/11/10 20:40 linux-4.14.y c9fda4f2 dc438b91 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/11/07 16:16 linux-4.14.y c9fda4f2 f39aff9e .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/11/01 11:49 linux-4.14.y ddef1e8e a41ca8fa .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/11/01 03:11 linux-4.14.y ddef1e8e a41ca8fa .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/26 12:03 linux-4.14.y b98aebd2 25bb509e .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/24 08:07 linux-4.14.y b98aebd2 d01bb02a .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/20 16:03 linux-4.14.y b98aebd2 8c88c9c1 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/20 02:00 linux-4.14.y b98aebd2 8c88c9c1 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/20 00:35 linux-4.14.y b98aebd2 8c88c9c1 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/19 12:35 linux-4.14.y b98aebd2 8c88c9c1 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/19 01:29 linux-4.14.y b98aebd2 8c88c9c1 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/10/14 21:29 linux-4.14.y e132c8d7 a6aef847 .config log report jbacik@fb.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci2-linux-4-14 2019/08/17 14:11 linux-4.14.y 45f092f9 55bf8926 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu