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: 487d, last: 15d
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 435d 476d 0/3 public: reported syz repro on 2019/04/23 08:58
upstream INFO: rcu detected stall in ext4_file_write_iter C cause 93 20h50m 533d 0/17 upstream: reported C repro on 2019/02/26 06:50
linux-4.19 INFO: rcu detected stall in ext4_file_write_iter C 7 22m 479d 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 2020/07/28 00:17 linux-4.14.y 69b94dd6 7509bf36 .config log report syz C
ci2-linux-4-14 2020/06/02 14:29 linux-4.14.y 4f68020f 7509bf36 .config log report syz C
ci2-linux-4-14 2020/05/03 14:02 linux-4.14.y 773e2b1c 7509bf36 .config log report syz C
ci2-linux-4-14 2020/04/03 13:20 linux-4.14.y 4520f06b 7509bf36 .config log report syz C
ci2-linux-4-14 2020/03/04 12:42 linux-4.14.y 78d697fc 7509bf36 .config log report syz C
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 (7):
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 2020/06/27 23:48 linux-4.14.y b850307b a2cdad9d .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
ci2-linux-4-14 2020/06/24 11:31 linux-4.14.y b850307b 41694dbf .config log report linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14 2020/03/04 12:51 linux-4.14.y 78d697fc 712198ac .config log report adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, tytso@mit.edu
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