syzbot


INFO: task hung in synchronize_rcu (3)
Status: upstream: reported C repro on 2020/07/22 18:22
Reported-by: syzbot+0c6da80218456f1edc36@syzkaller.appspotmail.com
First crash: 254d, last: 20d

Cause bisection: introduced by (bisect log):

commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
Author: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Date: Sat Sep 29 00:59:43 2018 +0000

  tc: Add support for configuring the taprio scheduler

Crash: INFO: rcu detected stall in smp_call_function (log)
Repro: C syz .config
similar bugs (6):
Kernel Title Repro Bisected Count Last Reported Patched Status
android-49 INFO: task hung in synchronize_rcu 1 256d 256d 0/3 auto-closed as invalid on 2020/03/28 16:57
linux-4.14 INFO: task hung in synchronize_rcu C 13 4h04m 278d 0/1 upstream: reported C repro on 2019/11/07 04:32
linux-4.19 INFO: task hung in synchronize_rcu 9 4d09h 276d 0/1 upstream: reported on 2019/11/08 21:27
upstream INFO: task hung in synchronize_rcu syz cause 1206 256d 282d 15/17 fixed on 2019/11/29 15:48
android-414 INFO: task hung in synchronize_rcu 1 274d 274d 0/1 auto-closed as invalid on 2020/03/10 10:42
upstream INFO: task hung in synchronize_rcu (2) 8 255d 255d 0/17 closed as invalid on 2019/11/30 16:54

Sample crash report:

Crashes (28):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-386 2020/07/22 00:02 upstream 4fa640dc 21f1765e .config log report syz C linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root 2020/04/11 14:29 upstream 5b8b9d0c a8c6a3f8 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root 2020/01/28 13:24 upstream b0be0eff 56cd6c9b .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, kafai@fb.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, yhs@fb.com
ci-upstream-kasan-gce-selinux-root 2020/01/28 11:06 upstream b0be0eff 56cd6c9b .config log report amir73il@gmail.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce 2020/01/22 16:40 upstream d96d875e 8eda0b95 .config log report davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci-upstream-kasan-gce-smack-root 2020/01/20 05:46 upstream 8f8972a3 0342f8c7 .config log report akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/01/19 10:49 upstream 244dc268 bc8bc756 .config log report amir73il@gmail.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce 2020/01/15 14:57 upstream 95e20af9 fa12bd3c .config log report davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci-upstream-kasan-gce 2020/01/13 20:12 upstream b3a987b0 99565c1a .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce 2020/01/13 13:27 upstream b3a987b0 99565c1a .config log report bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-kasan-gce-selinux-root 2020/01/13 13:09 upstream b3a987b0 99565c1a .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce 2020/01/05 00:20 upstream 3a562aee 68256974 .config log report davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, yoshfuji@linux-ipv6.org
ci-upstream-kasan-gce-selinux-root 2020/01/03 22:31 upstream bed72351 68256974 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-kasan-gce-root 2019/12/27 06:19 upstream 46cf053e be5c2c81 .config log report amir73il@gmail.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-kasan-gce 2019/12/15 06:09 upstream 07c4b9e9 eef6e580 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-kasan-gce 2019/12/11 18:14 upstream 6794862a 101194eb .config log report bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, rkrcmar@redhat.com, sean.j.christopherson@intel.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org
ci-upstream-kasan-gce 2019/12/05 07:28 upstream aedc0650 b2088328 .config log report davem@davemloft.net, herbert@gondor.apana.org.au, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com, yoshfuji@linux-ipv6.org
ci-upstream-kasan-gce-root 2019/12/01 07:56 upstream 32ef9553 a76bf83f .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, maximmi@mellanox.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, pabeni@redhat.com, songliubraving@fb.com, tglx@linutronix.de, willemb@google.com, yhs@fb.com, yuehaibing@huawei.com
ci-upstream-net-this-kasan-gce 2020/06/08 03:32 net 4d3da2d8 7751efd0 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-net-this-kasan-gce 2020/01/24 03:10 net 61678d28 2e95ab33 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-net-this-kasan-gce 2020/01/20 04:48 net 09d4f10a 0342f8c7 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-bpf-kasan-gce 2020/01/18 12:25 bpf 1712b2ff 3de7aabb .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-net-this-kasan-gce 2019/12/09 15:47 net e42617b8 b31eda3d .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, maximmi@mellanox.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, pabeni@redhat.com, songliubraving@fb.com, tglx@linutronix.de, willemb@google.com, yhs@fb.com, yuehaibing@huawei.com
ci-upstream-bpf-next-kasan-gce 2020/01/27 06:04 bpf-next e9f02a80 dd56146d .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, maowenan@huawei.com, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-bpf-next-kasan-gce 2020/01/20 03:24 bpf-next a6ed02ca 0342f8c7 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, maowenan@huawei.com, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com
ci-upstream-net-kasan-gce 2020/01/12 07:14 net-next 5c9166f0 4c04afaa .config log report amir73il@gmail.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
ci-upstream-net-kasan-gce 2019/12/06 23:34 net-next 596cf45c 85f26751 .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, maximmi@mellanox.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, pabeni@redhat.com, songliubraving@fb.com, tglx@linutronix.de, willemb@google.com, yhs@fb.com, yuehaibing@huawei.com
ci-upstream-linux-next-kasan-gce-root 2019/12/11 08:14 linux-next 938f49c8 101194eb .config log report andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, kafai@fb.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, willemb@google.com, yhs@fb.com