syzbot


INFO: task hung in blkdev_put (4)
Status: upstream: reported C repro on 2020/10/03 13:09
Reported-by: syzbot+9a29d5e745bd7523c851@syzkaller.appspotmail.com
First crash: 101d, last: 13d

Cause bisection: introduced by (bisect log) :
commit 2da22da573481cc4837e246d0eee4d518b3f715e
Author: Mike Christie <mchristi@redhat.com>
Date: Tue Aug 13 16:39:52 2019 +0000

  nbd: fix zero cmd timeout handling v2

Crash: INFO: task hung in blkdev_put (log)
Repro: C syz .config
similar bugs (12):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in blkdev_put (3) 1 180d 180d 0/17 auto-closed as invalid on 2020/06/25 13:28
android-49 INFO: task hung in blkdev_put (2) 3 343d 363d 0/3 auto-closed as invalid on 2020/03/14 12:22
linux-4.19 INFO: task hung in blkdev_put 2 9d22h 92d 0/1 upstream: reported on 2020/07/23 21:33
upstream INFO: task hung in blkdev_put 320 622d 1048d 0/17 closed as dup on 2018/11/11 08:29
linux-4.14 INFO: task hung in blkdev_put 2 406d 555d 0/1 auto-closed as invalid on 2020/01/12 01:56
linux-4.14 INFO: task hung in blkdev_put (3) C 3 5d02h 54d 0/1 upstream: reported C repro on 2020/08/30 21:52
android-49 INFO: task hung in blkdev_put 220 542d 558d 0/3 auto-closed as invalid on 2019/10/25 08:47
linux-4.14 INFO: task hung in blkdev_put (2) 2 209d 247d 0/1 auto-closed as invalid on 2020/07/26 14:38
android-414 INFO: task hung in blkdev_put 119 328d 560d 0/1 auto-closed as invalid on 2020/03/30 04:06
android-44 INFO: task hung in blkdev_put 26 628d 558d 0/2 auto-closed as invalid on 2019/08/03 02:42
android-44 INFO: task hung in blkdev_put (2) 3 339d 416d 0/2 auto-closed as invalid on 2020/03/18 19:27
upstream INFO: task hung in blkdev_put (2) 2 335d 380d 0/17 auto-closed as invalid on 2020/02/22 04:07

Sample crash report:

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-selinux-root 2020/09/29 13:03 upstream fb0155a0 1b88c6d5 .config log report syz C linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/10/10 21:49 upstream 6f2f486d 4a77ae0b .config log report info linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/10/09 10:33 upstream 3d006ee4 92390980 .config log report info linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/07/19 03:32 upstream 6a70f89c 9c812472 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/07/14 17:36 upstream 0dc589da ce4c95b3 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk