syzbot


INFO: rcu detected stall in ext4_file_write_iter
Status: upstream: reported C repro on 2019/02/26 06:50
Reported-by: syzbot+7d19c5fe6a3f1161abb7@syzkaller.appspotmail.com
First crash: 149d, last: 2h49m

Bisection: the bug happens on the oldest tested release (bisect log)
Tree: upstream
Crash: INFO: rcu detected stall in ext4_file_write_iter (log)
Repro: C syz .config
similar bugs (3):
Kernel Title Repro Bisected Count Last Reported Patched Status
android-49 INFO: rcu detected stall in ext4_file_write_iter syz 2 14d 55d 0/3 public: reported syz repro on 2019/04/23 08:58
linux-4.14 INFO: rcu detected stall in ext4_file_write_iter 2 55d 66d 0/1 upstream: reported on 2019/04/12 16:30
linux-4.19 INFO: rcu detected stall in ext4_file_write_iter 2 4d05h 58d 0/1 upstream: reported on 2019/04/20 13:09

Sample crash report:

All crashes (40):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-selinux-root 2019/02/22 06:00 upstream 8a61716f 7ff74a98 .config log report syz C adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/05/03 16:28 upstream ea986679 1bfa09b9 .config log report syz C akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, hannes@cmpxchg.org, hughd@google.com, josef@toxicpanda.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, willy@infradead.org
ci-upstream-kasan-gce-root 2019/04/12 03:29 upstream 2d06b235 13030ef8 .config log report syz C christian@brauner.io, ebiederm@xmission.com, jannh@google.com, keescook@chromium.org, linux-kernel@vger.kernel.org, serge@hallyn.com
ci-upstream-kasan-gce-smack-root 2019/01/19 05:29 upstream 2339e91d 2103a236 .config log report akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, david@fromorbit.com, hannes@cmpxchg.org, hughd@google.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, willy@infradead.org
ci-upstream-kasan-gce-selinux-root 2019/06/14 09:21 upstream c11fb13a 998ccc76 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-smack-root 2019/06/14 09:19 upstream c11fb13a 998ccc76 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/06/14 09:19 upstream c11fb13a 998ccc76 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2019/06/13 12:05 upstream b076173a 3f4e812b .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2019/06/12 21:17 upstream 35110e38 794a1ad7 .config log report akpm@linux-foundation.org, darrick.wong@oracle.com, david@fromorbit.com, hannes@cmpxchg.org, hughd@google.com, josef@toxicpanda.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, willy@infradead.org
ci-upstream-kasan-gce-root 2019/06/12 12:28 upstream aa723548 794a1ad7 .config log report akpm@linux-foundation.org, bfoster@redhat.com, dchinner@redhat.com, gthelen@google.com, jack@suse.cz, laoar.shao@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, tglx@linutronix.de, willy@infradead.org
ci-upstream-kasan-gce-root 2019/06/08 20:41 upstream 79c3ba32 0159583c .config log report john.stultz@linaro.org, linux-kernel@vger.kernel.org, sboyd@kernel.org, tglx@linutronix.de
ci-upstream-kasan-gce-smack-root 2019/06/06 19:17 upstream 156c0591 698773cb .config log report akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, hannes@cmpxchg.org, hughd@google.com, jack@suse.cz, josef@toxicpanda.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, willy@infradead.org
ci-upstream-kasan-gce-smack-root 2019/06/05 22:53 upstream 156c0591 bfb4a51e .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-smack-root 2019/05/08 20:44 upstream 80f23212 1ab4c999 .config log report akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, david@fromorbit.com, hannes@cmpxchg.org, hughd@google.com, josef@toxicpanda.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, willy@infradead.org
ci-upstream-kasan-gce-smack-root 2019/05/07 22:00 upstream 8ff468c2 a7383bfa .config log report christian@brauner.io, ebiederm@xmission.com, jannh@google.com, keescook@chromium.org, linux-kernel@vger.kernel.org, serge@hallyn.com
ci-upstream-kasan-gce-root 2019/04/18 11:13 upstream e53f31bf b0e8efcb .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2019/04/14 07:46 upstream b60bc066 c402d8f1 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2019/04/12 15:30 upstream 2d06b235 8916f5e1 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/04/05 17:53 upstream ea2cec24 40f2363e .config log report akpm@linux-foundation.org, darrick.wong@oracle.com, hannes@cmpxchg.org, hughd@google.com, jack@suse.cz, josef@toxicpanda.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, willy@infradead.org
ci-upstream-kasan-gce-root 2019/04/04 14:59 upstream 145f47c7 6a475fff .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/04/03 05:43 upstream 5e7a8ca3 dfd3394d .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/03/26 23:36 upstream 65ae6893 55684ce1 .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-smack-root 2019/03/25 05:14 upstream 8c2ffd91 2c86e0a5 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/03/25 02:52 upstream 8c2ffd91 2c86e0a5 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-selinux-root 2019/03/24 07:56 upstream 1bdd3dbf a2cef203 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-root 2019/03/23 06:08 upstream fd1f297b 3361bde5 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-kasan-gce-smack-root 2019/03/02 10:48 upstream a215ce8f 1c0e457a .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2019/02/22 02:59 upstream 8a61716f 7ff74a98 .config log report akpm@linux-foundation.org, bfoster@redhat.com, dchinner@redhat.com, gthelen@google.com, jack@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mojha@codeaurora.org, willy@infradead.org
ci-upstream-kasan-gce-root 2019/02/19 10:23 upstream b5372fe5 59f36113 .config log report akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, david@fromorbit.com, hannes@cmpxchg.org, hughd@google.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2019/06/17 14:26 linux-next a125097c 442206d7 .config log report akpm@linux-foundation.org, bfoster@redhat.com, dchinner@redhat.com, gthelen@google.com, jack@suse.cz, laoar.shao@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mojha@codeaurora.org, rppt@linux.ibm.com, tglx@linutronix.de, tj@kernel.org, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2019/06/12 12:28 linux-next 81a72c79 794a1ad7 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/06/08 03:21 linux-next 3f310e51 cf9c3a50 .config log report akpm@linux-foundation.org, bfoster@redhat.com, dchinner@redhat.com, gthelen@google.com, jack@suse.cz, laoar.shao@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mojha@codeaurora.org, rppt@linux.ibm.com, tglx@linutronix.de, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2019/06/07 10:55 linux-next 3f310e51 b004e95a .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/05/09 04:45 linux-next 31ccad9b 1ab4c999 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci-upstream-linux-next-kasan-gce-root 2019/05/07 22:27 linux-next 00c3bc00 a7383bfa .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 2019/05/07 14:48 linux-next fcdb095a d28f4ce5 .config log report ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, jakub.kicinski@netronome.com, john.fastabend@gmail.com, kafai@fb.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, xdp-newbies@vger.kernel.org, yhs@fb.com
ci-upstream-linux-next-kasan-gce-root 2019/05/01 15:12 linux-next bf2c8035 618456b4 .config log report bp@alien8.de, hpa@zytor.com, jannh@google.com, jpoimboe@redhat.com, linux-kernel@vger.kernel.org, mingo@redhat.com, tglx@linutronix.de, x86@kernel.org
ci-upstream-linux-next-kasan-gce-root 2019/04/30 12:26 linux-next f43b05fd 20f16bef .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 2019/04/26 03:25 linux-next c392798a b617407b .config log report akpm@linux-foundation.org, darrick.wong@oracle.com, david@fromorbit.com, hannes@cmpxchg.org, hughd@google.com, josef@toxicpanda.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@linux.ibm.com, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2019/04/14 07:55 linux-next bcb67f0f c402d8f1 .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu