syzbot


INFO: rcu detected stall in chrdev_open (2)
Status: upstream: reported C repro on 2019/12/12 22:35
Reported-by: syzbot+29784f46793e49c37812@syzkaller.appspotmail.com
First crash: 312d, last: 12d

Cause bisection: introduced by (bisect log):

commit 801fc022147974f4754939202efe607294479bc9
Author: Thierry Reding <treding@nvidia.com>
Date: Fri Nov 18 13:34:46 2016 +0000

  Merge branch 'for-4.10/firmware' into for-4.10/reset

Crash: unregister_netdevice: waiting for DEV to become free (log)
Repro: C syz .config
similar bugs (3):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 INFO: rcu detected stall in chrdev_open (2) 1 157d 157d 0/1 auto-closed as invalid on 2020/09/12 23:19
linux-4.19 INFO: rcu detected stall in chrdev_open 1 291d 291d 0/1 auto-closed as invalid on 2020/05/02 02:53
upstream INFO: rcu detected stall in chrdev_open 4 321d 322d 0/17 closed as invalid on 2019/12/04 14:04

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info
ci-upstream-kasan-gce-selinux-root 2020/10/07 12:20 upstream c85fb28b 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/27 05:22 upstream 15bc20c6 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/07/27 03:36 upstream 92ed3019 08003f64 .config log syz C
ci-upstream-kasan-gce-selinux-root 2020/06/18 11:48 upstream 1b504402 08003f64 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/04/14 20:17 upstream 8632e9b5 08003f64 .config log report syz C
Crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce-selinux-root 2019/12/13 01:10 upstream ae4b064e 08003f64 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2019/12/12 15:53 upstream 687dec9b d973f528 .config log report syz C gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2020/03/15 19:27 upstream d3dca690 749688d2 .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2020/03/12 06:05 upstream e3a36eb6 e7caca8e .config log report bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, shile.zhang@linux.alibaba.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-smack-root 2020/02/11 17:01 upstream 0a679e13 4d1ab643 .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-root 2020/02/05 09:44 upstream 6992ca0d 93e5e335 .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce-selinux-root 2020/01/31 08:35 upstream 9f68e365 5ed23f9a .config log report bp@alien8.de, devel@etsukata.com, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-root 2020/01/09 10:24 upstream b07f636f ddc3e859 .config log report bp@alien8.de, devel@etsukata.com, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-smack-root 2020/01/08 12:35 upstream ae608821 6738e0b3 .config log report akpm@linux-foundation.org, cgroups@vger.kernel.org, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@kernel.org, vdavydov.dev@gmail.com
ci-upstream-kasan-gce-root 2019/12/12 13:57 upstream 687dec9b d973f528 .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/05/19 11:25 linux-next ac935d22 6d882fd2 .config log report bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mbenes@suse.cz, mingo@redhat.com, peterz@infradead.org, shile.zhang@linux.alibaba.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/05/13 12:24 linux-next ac935d22 9a6d42fb .config log report bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mbenes@suse.cz, mingo@redhat.com, peterz@infradead.org, shile.zhang@linux.alibaba.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/02/06 05:39 linux-next a0c61bf1 662cf49a .config log report gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org