syzbot


INFO: rcu detected stall in ext4_file_write_iter
Status: upstream: reported C repro on 2019/04/20 13:09
Reported-by: syzbot+b0c07a7f1f6925ea6219@syzkaller.appspotmail.com
First crash: 230d, last: 6d00h
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 186d 227d 0/3 public: reported syz repro on 2019/04/23 08:58
linux-4.14 INFO: rcu detected stall in ext4_file_write_iter C 4 1d18h 238d 0/1 upstream: reported C repro on 2019/04/12 16:30
upstream INFO: rcu detected stall in ext4_file_write_iter C cause 53 3d20h 283d 0/16 upstream: reported C repro on 2019/02/26 06:50

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci2-linux-4-19 2019/12/01 05:10 linux-4.19.y 14260788 34bf9440 .config log report syz C
Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-19 2019/06/22 12:57 linux-4.19.y 63bbbcd8 34bf9440 .config log report syz C adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci2-linux-4-19 2019/04/20 12:08 linux-4.19.y c98875d9 b0e8efcb .config log report akpm@linux-foundation.org, bfoster@redhat.com, gthelen@google.com, jack@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mhocko@suse.com, mojha@codeaurora.org
ci2-linux-4-19 2019/06/13 12:01 linux-4.19.y 768292d0 3f4e812b .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk