syzbot


INFO: task hung in nbd_ioctl (3)
Status: upstream: reported syz repro on 2020/09/28 07:17
Reported-by: syzbot+fe03c50d25c0188f7487@syzkaller.appspotmail.com
First crash: 26d, last: 24d

Cause bisection: introduced by (bisect log) :
commit e9e006f5fcf2bab59149cb38a48a4817c1b538b4
Author: Mike Christie <mchristi@redhat.com>
Date: Sun Aug 4 19:10:06 2019 +0000

  nbd: fix max number of supported devs

Crash: INFO: task hung in nbd_ioctl (log)
Repro: syz .config
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 INFO: task hung in nbd_ioctl C done 18 302d 376d 1/1 fixed on 2019/12/28 10:32
linux-4.14 INFO: task hung in nbd_ioctl (2) C done 16 49d 294d 1/1 fixed on 2020/10/21 11:01
upstream INFO: task hung in nbd_ioctl (2) 37 56d 109d 17/17 fixed on 2020/09/25 01:17
upstream INFO: task hung in nbd_ioctl C done 71 353d 389d 14/17 fixed on 2019/11/06 12:39
linux-4.19 INFO: task hung in nbd_ioctl C 38 3d06h 377d 0/1 upstream: reported C repro on 2019/10/12 13:11

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-selinux-root 2020/09/29 09:51 upstream fb0155a0 1b88c6d5 .config log report syz axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-root 2020/09/28 04:35 upstream a1bffa48 5dd8aee8 .config log report syz axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org