syzbot


INFO: rcu detected stall in ext4_file_write_iter
Status: upstream: reported C repro on 2019/04/12 16:30
Reported-by: syzbot+0f14e80e289d4997740f@syzkaller.appspotmail.com
First crash: 311d, last: 14d
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 259d 301d 0/3 public: reported syz repro on 2019/04/23 08:58
upstream INFO: rcu detected stall in ext4_file_write_iter C cause 68 2h21m 357d 0/16 upstream: reported C repro on 2019/02/26 06:50
linux-4.19 INFO: rcu detected stall in ext4_file_write_iter C 3 19d 303d 0/1 upstream: reported C repro on 2019/04/20 13:09

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro
ci2-linux-4-14 2020/02/03 12:14 linux-4.14.y 9fa690a2 7509bf36 .config log report syz C
ci2-linux-4-14 2020/01/04 11:47 linux-4.14.y 4c5bf01e 7509bf36 .config log report syz C
ci2-linux-4-14 2019/12/05 11:20 linux-4.14.y fbc5fe7a 7509bf36 .config log report syz C
Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-linux-4-14 2019/06/29 05:32 linux-4.14.y f4cc0ed9 7509bf36 .config log report syz C linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14 2019/09/08 20:12 linux-4.14.y 414510bc a60cb4cd .config log report gregkh@linuxfoundation.org, jack@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, tytso@mit.edu, zwisler@chromium.org
ci2-linux-4-14 2019/04/23 00:06 linux-4.14.y 68d7a45e 53199d6e .config log report gregkh@linuxfoundation.org, hannes@cmpxchg.org, jack@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mawilcox@microsoft.com, mhocko@suse.com
ci2-linux-4-14 2019/04/12 15:29 linux-4.14.y 1ec8f1f0 4f421599 .config log report eparis@parisplace.org, james.l.morris@oracle.com, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, paul@paul-moore.com, sds@tycho.nsa.gov, selinux@tycho.nsa.gov, serge@hallyn.com