syzbot


INFO: task hung in d_alloc_parallel (2)
Status: upstream: reported C repro on 2019/10/22 22:44
Reported-by: syzbot+55f124a35eac76b52fb7@syzkaller.appspotmail.com
First crash: 456d, last: 133d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in lookup_slow (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
similar bugs (5):
Kernel Title Repro Bisected Count Last Reported Patched Status
android-49 INFO: task hung in d_alloc_parallel 85 405d 555d 0/3 auto-closed as invalid on 2020/01/08 20:52
linux-4.14 INFO: task hung in d_alloc_parallel C fix 3 222d 433d 0/1 upstream: reported C repro on 2019/08/14 00:43
android-414 INFO: task hung in d_alloc_parallel 1 365d 365d 0/1 auto-closed as invalid on 2020/02/18 04:29
linux-4.19 INFO: task hung in d_alloc_parallel syz 1 21d 171d 0/1 upstream: reported syz repro on 2020/05/01 20:49
upstream INFO: task hung in d_alloc_parallel 213 598d 930d 0/17 closed as dup on 2018/09/08 15:40

Sample crash report:

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-selinux-root 2019/10/20 00:35 upstream 998d7551 8c88c9c1 .config log report syz C linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/06/02 04:02 upstream 9bf9511e a0331e89 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/05/16 20:15 upstream 12bf0b63 37bccd4e .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root 2019/08/26 19:44 upstream a55aa89a d21c5d9d .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root 2019/07/21 13:08 upstream c6dd78fc 1656845f .config log report
ci-upstream-kasan-gce-386 2020/06/09 00:09 upstream 7ae77150 7604bb03 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2019/09/16 02:12 linux-next 6d028043 32d59357 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2019/08/22 21:02 linux-next b5835edc d003d6d0 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk