syzbot


possible deadlock in flush_workqueue (2)
Status: upstream: reported C repro on 2018/10/20 16:57
Reported-by: syzbot+a50c7541a4a55cd49b02@syzkaller.appspotmail.com
First crash: 460d, last: 25d

Cause bisection: introduced by (bisect log):

commit f547fac624be53ad8b07e9ebca7654a7827ba61b
Author: Sabrina Dubroca <sd@queasysnail.net>
Date: Fri Oct 12 14:22:47 2018 +0000

  ipv6: rate-limit probes for neighbourless routes

Crash: possible deadlock in __generic_file_fsync (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

commit e7c58097793ef15d58fadf190ee58738fbf447cd
Author: Mike Kravetz <mike.kravetz@oracle.com>
Date: Tue Jan 8 23:23:32 2019 +0000

  hugetlbfs: revert "Use i_mmap_rwsem to fix page fault/truncate race"

similar bugs (5):
Kernel Title Repro Bisected Count Last Reported Patched Status
android-414 possible deadlock in flush_workqueue 1 72d 72d 0/1 public: reported on 2019/11/11 12:29
linux-4.14 possible deadlock in flush_workqueue C fix 15 65d 158d 1/1 fixed on 2019/12/18 17:48
linux-4.14 possible deadlock in flush_workqueue (2) 3 29d 33d 0/1 upstream: reported on 2019/12/20 14:06
upstream possible deadlock in flush_workqueue C 73762 475d 517d 12/16 fixed on 2018/10/11 14:33
linux-4.19 possible deadlock in flush_workqueue 3 86d 97d 0/1 upstream: reported on 2019/10/17 12:58

Sample crash report:

Crashes (256):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2019/12/15 07:18 upstream 07c4b9e9 eef6e580 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/22 15:10 upstream 3b7c59a1 c59a7cd8 .config log report syz C 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 2019/10/17 04:36 upstream bc88f85c 8c88c9c1 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/16 16:20 upstream 3b1f00ac d4ea592f .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/12 05:20 upstream 9e208aa0 426631dd .config log report syz C 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 2019/10/08 19:43 upstream eda57a0e b1ebbfef .config log report syz C 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 2019/10/02 15:17 upstream 54ecb8f7 2e29b534 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/09/22 22:42 upstream f7c3bf8f d96e88f3 .config log report syz C 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 2019/09/22 18:22 upstream f7c3bf8f d96e88f3 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/09/21 21:21 upstream 227c3e9e d96e88f3 .config log report syz C 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 2018/10/23 09:41 upstream ca9eb48f ecb386fe .config log report syz C adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/10/20 12:49 linux-next c4b9850b 8c88c9c1 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/09/26 14:40 linux-next d4717516 24d405a3 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/09/21 05:07 linux-next b5b3bd89 d96e88f3 .config log report syz C axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2018/11/10 14:00 linux-next 442b8cea f9815aaf .config log report syz C adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/09/23 01:58 upstream f7c3bf8f d96e88f3 .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-selinux-root 2018/11/21 03:45 upstream 06e68fed 9aca6b52 .config log report syz adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-smack-root 2018/10/24 16:21 upstream 638820d8 a8292de9 .config log report syz adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2018/10/24 11:23 upstream 44786880 a8292de9 .config log report syz adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2018/10/19 16:13 upstream 91b15613 9aba67b5 .config log report syz adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/10/19 19:32 linux-next c4b9850b 8c88c9c1 .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-linux-next-kasan-gce-root 2018/11/20 23:50 linux-next 442b8cea 9aca6b52 .config log report syz adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/12/16 11:41 upstream 07c4b9e9 eef6e580 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/12/15 04:29 upstream 07c4b9e9 eef6e580 .config log report 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 2019/12/07 13:56 upstream eea2d5da 85f26751 .config log report 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 2019/11/27 09:24 upstream 89d57ddd 1048481f .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/26 05:54 upstream 0be0ee71 f746151a .config log report 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 2019/11/25 20:06 upstream 219d5433 371caf77 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/24 21:41 upstream 6b8a7946 598ca6c8 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/22 14:54 upstream 81429eb8 598ca6c8 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/20 21:08 upstream c74386d5 8098ea0f .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/18 13:58 upstream af42d346 1daed50a .config log report 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 2019/11/17 04:16 upstream 6c9594bd d5696d51 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/16 14:41 upstream 6c9594bd d5696d51 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/13 14:36 upstream 0e3f1ad8 048f2d49 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/13 12:06 upstream 0e3f1ad8 048f2d49 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/12 20:34 upstream 100d46bd 048f2d49 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/11/12 16:23 upstream de620fb9 048f2d49 .config log report 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 2019/11/10 16:10 upstream 00aff683 dc438b91 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/10 10:58 upstream 00aff683 dc438b91 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/11/06 04:34 upstream 26bc6721 bc2c6e45 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/11/01 12:51 upstream e472c64a a41ca8fa .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/11/01 00:32 upstream e472c64a a41ca8fa .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/31 11:55 upstream e472c64a a41ca8fa .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/28 02:47 upstream d6d5df1d 25bb509e .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/27 12:52 upstream 5a1e843c 25bb509e .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/27 06:33 upstream f877bee5 25bb509e .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/26 18:49 upstream f877bee5 25bb509e .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/26 13:07 upstream 8caacaad 413926c5 .config log report 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 2019/10/23 21:12 upstream 13b86bc4 b602d64b .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/22 05:30 upstream 7d194c21 c59a7cd8 .config log report 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 2019/10/19 01:53 upstream b9959c7a 8c88c9c1 .config log report 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 2019/10/18 10:59 upstream 0e2adab6 8c88c9c1 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/16 22:34 upstream bc88f85c 8c88c9c1 .config log report 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 2019/10/16 01:38 upstream 3b1f00ac d4ea592f .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/14 05:49 upstream d4615e5a 2f661ec4 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/11 19:48 upstream 9e208aa0 426631dd .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-smack-root 2019/10/11 13:20 upstream fb20da6a 1a3bad90 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/10 21:30 upstream fb20da6a a4efa8c0 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce-selinux-root 2019/10/08 22:24 upstream d5001955 b1ebbfef .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-kasan-gce 2018/12/25 20:03 upstream 8fe28cb5 8a41a0ad .config log report ezequiel@collabora.com, hansverk@cisco.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, scileont@gmail.com, tfiga@chromium.org
ci-upstream-kasan-gce-386 2018/12/21 03:08 upstream 9097a058 2b497001 .config log report hansverk@cisco.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, niklas.soderlund+renesas@ragnatech.se, paul.kocialkowski@bootlin.com, sakari.ailus@linux.intel.com, samitolvanen@google.com, todor.tomov@linaro.org
ci-upstream-linux-next-kasan-gce-root 2019/12/28 02:11 linux-next 7ddd09fc be5c2c81 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/12/20 08:36 linux-next 7ddd09fc e30cbdae .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/11/26 11:21 linux-next 131b7b67 f746151a .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/11/12 11:22 linux-next fc6d6db1 048f2d49 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/11/04 18:25 linux-next 49afce6d 76630fc9 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/11/03 13:14 linux-next 49afce6d c9610487 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/10/27 19:27 linux-next 139c2d13 25bb509e .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/10/22 04:10 linux-next a6fcdcd9 c59a7cd8 .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org
ci-upstream-linux-next-kasan-gce-root 2019/10/12 17:28 linux-next 8ada228a 426631dd .config log report axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org