syzbot


WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected (2)
Status: upstream: reported C repro on 2020/09/09 08:48
Reported-by: syzbot+22e87cdf94021b984aa6@syzkaller.appspotmail.com
First crash: 20d, last: 22h42m

Cause bisection: introduced by (bisect log):

commit f08e3888574d490b31481eef6d84c61bedba7a47
Author: Boqun Feng <boqun.feng@gmail.com>
Date: Fri Aug 7 07:42:30 2020 +0000

  lockdep: Fix recursive read lock related safe->unsafe detection

Crash: WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected (log)
Repro: C syz .config
similar bugs (2):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected C 2126 875d 890d 6/17 fixed on 2018/05/08 18:30
linux-4.14 WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 4 167d 181d 0/1 auto-closed as invalid on 2020/08/13 01:44

Sample crash report:

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-linux-next-kasan-gce-root 2020/09/28 07:05 linux-next d1d2220c 5dd8aee8 .config log report syz C bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/27 12:25 linux-next d1d2220c 5dd8aee8 .config log report syz C bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/09 05:32 linux-next dff9f829 abf9ba4f .config log report syz C bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-qemu-upstream 2020/09/10 08:35 upstream fffe3ae0 409809d8 .config log report axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-qemu-upstream 2020/09/10 06:45 upstream fffe3ae0 409809d8 .config log report axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/28 02:48 linux-next d1d2220c 5dd8aee8 .config log report info bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/27 00:03 linux-next d1d2220c 2d5ea0cb .config log report info bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/18 20:32 linux-next b652d2a5 53ce8104 .config log report info bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/16 14:50 linux-next 5fa35f24 18d7d030 .config log report info bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/12 22:45 linux-next d5b2251d ce441f06 .config log report bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/09/10 07:13 linux-next 7204eaa2 409809d8 .config log report bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk