syzbot


INFO: rcu detected stall in do_signal (4)
Status: upstream: reported C repro on 2019/12/23 09:45
Reported-by: syzbot+7e600afa7f6059f9a30e@syzkaller.appspotmail.com
First crash: 166d, last: 19d

Cause bisection: the bug happens on the oldest tested release
Crash: INFO: rcu detected stall in do_signal (log)
Repro: C syz .config

Fix bisection: failed (bisect log)
similar bugs (6):
Kernel Title Repro Bisected Count Last Reported Patched Status
upstream INFO: rcu detected stall in do_signal (3) 2 179d 179d 0/17 closed as invalid on 2019/12/04 14:04
linux-4.19 INFO: rcu detected stall in do_signal (2) 1 138d 138d 0/1 auto-closed as invalid on 2020/05/11 22:29
upstream INFO: rcu detected stall in do_signal 2 578d 596d 0/17 auto-closed as invalid on 2019/04/28 15:41
linux-4.19 INFO: rcu detected stall in do_signal 1 400d 400d 0/1 auto-closed as invalid on 2019/10/23 10:40
linux-4.14 INFO: rcu detected stall in do_signal 4 20d 163d 0/1 upstream: reported on 2019/12/18 22:20
upstream INFO: rcu detected stall in do_signal (2) 3 183d 183d 0/17 closed as invalid on 2019/11/29 14:24

Sample crash report:

Crashes (17):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2019/12/19 09:30 upstream 2187f215 79b211f7 .config log report syz C christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-linux-next-kasan-gce-root 2019/12/27 13:29 linux-next 7ddd09fc be5c2c81 .config log report syz C bigeasy@linutronix.de, bp@alien8.de, dave.hansen@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, riel@surriel.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-smack-root 2020/05/11 10:51 upstream 2ef96a5b f8f57555 .config log report bigeasy@linutronix.de, bp@alien8.de, hpa@zytor.com, hughd@google.com, linux-kernel@vger.kernel.org, mingo@redhat.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-selinux-root 2020/03/07 08:55 upstream fb279f4e fd2a5f28 .config log report christian@brauner.io, ebiederm@xmission.com, guro@fb.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-kasan-gce-root 2020/02/04 00:34 upstream 754beeec 93e5e335 .config log report bigeasy@linutronix.de, bp@alien8.de, dave.hansen@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, riel@surriel.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-root 2020/01/14 17:28 upstream b3a987b0 32881205 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-kasan-gce-root 2020/01/14 11:29 upstream b3a987b0 32881205 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, mingo@kernel.org, oleg@redhat.com, peterz@infradead.org, tglx@linutronix.de
ci-upstream-kasan-gce-smack-root 2020/01/08 10:54 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 2019/12/27 18:54 upstream 46cf053e be5c2c81 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-kasan-gce-root 2019/12/27 07:16 upstream 46cf053e be5c2c81 .config log report bigeasy@linutronix.de, bp@alien8.de, dave.hansen@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, riel@surriel.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-kasan-gce-root 2019/12/26 23:09 upstream 46cf053e be5c2c81 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-kasan-gce-root 2019/12/26 04:58 upstream 46cf053e be5c2c81 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-kasan-gce-root 2019/12/16 04:08 upstream 07c4b9e9 eef6e580 .config log report bigeasy@linutronix.de, bp@alien8.de, dave.hansen@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, riel@surriel.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/03/07 08:44 linux-next 770fbb32 fd2a5f28 .config log report bigeasy@linutronix.de, bp@alien8.de, dave.hansen@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, riel@surriel.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2020/02/03 14:24 linux-next 2747d5fd 93e5e335 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-linux-next-kasan-gce-root 2020/01/07 17:52 linux-next 26467385 1bcd407e .config log report akpm@linux-foundation.org, christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com
ci-upstream-linux-next-kasan-gce-root 2019/12/25 23:04 linux-next 7ddd09fc be5c2c81 .config log report christian@brauner.io, ebiederm@xmission.com, linux-kernel@vger.kernel.org, oleg@redhat.com