syzbot


[upstream] INFO: task hung in generic_file_write_iter
Status: upstream: reported on 2018/07/18 08:58
Reported-by: syzbot+9933e4476f365f5d5a1b@syzkaller.appspotmail.com
Fix commit: 04906b2f blockdev: Fix livelocks on loop device
Patched on: [ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce], missing on: [ci-upstream-kmsan-gce]
First crash: 213d, last: 75d
duplicates:
Title Repro Count Last Reported Patched Status
INFO: rcu detected stall in sys_creat 98 27d 118d closed as dup on 2019/01/20 01:52
INFO: task hung in vfat_lookup 38 36d 164d closed as dup on 2018/09/05 22:07
INFO: task hung in inode_sleep_on_writeback 8 35d 321d closed as dup on 2019/02/06 13:32
INFO: task hung in __blkdev_get (2) 11 37d 161d closed as dup on 2018/09/08 15:48
INFO: task hung in blkdev_put 320 6d18h 433d closed as dup on 2018/11/11 08:29
INFO: task hung in do_rmdir (2) 3 37d 172d closed as dup on 2018/09/11 15:01
INFO: task hung in fat_fallocate 1 293d 293d closed as dup on 2019/01/20 01:49

Sample crash report:

All crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce-root 2018/07/17 18:30 upstream 30b06abf 6d5bd5b5 .config log report ak@linux.intel.com, akpm@linux-foundation.org, jack@suse.cz, jlayton@redhat.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mawilcox@microsoft.com, mgorman@techsingularity.net, tim.c.chen@linux.intel.com
ci-upstream-kasan-gce-root 2018/12/03 13:01 upstream 25956467 819002b0 .config log report akpm@linux-foundation.org, amir73il@gmail.com, darrick.wong@oracle.com, david@fromorbit.com, hannes@cmpxchg.org, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2018/10/28 19:19 linux-next 8c60c36d 6f9b225a .config log report akpm@linux-foundation.org, hannes@cmpxchg.org, jack@suse.cz, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mgorman@techsingularity.net, sfr@canb.auug.org.au, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2018/10/24 06:38 linux-next 8c60c36d a8292de9 .config log report akpm@linux-foundation.org, hannes@cmpxchg.org, jack@suse.cz, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mgorman@techsingularity.net, sfr@canb.auug.org.au, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2018/10/07 18:32 linux-next 12ffaa11 8b311eaf .config log report akpm@linux-foundation.org, hannes@cmpxchg.org, jack@suse.cz, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mgorman@techsingularity.net, sfr@canb.auug.org.au, willy@infradead.org
ci-upstream-linux-next-kasan-gce-root 2018/07/24 11:59 linux-next 89cf5535 4969639c .config log report ak@linux.intel.com, akpm@linux-foundation.org, jack@suse.cz, jlayton@redhat.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mawilcox@microsoft.com, mgorman@techsingularity.net, tim.c.chen@linux.intel.com
ci-upstream-linux-next-kasan-gce-root 2018/07/22 19:35 linux-next 89cf5535 8cc079c3 .config log report akpm@linux-foundation.org, hannes@cmpxchg.org, jack@suse.cz, jlayton@redhat.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mgorman@techsingularity.net, willy@infradead.org