syzbot


INFO: task hung in io_uring_flush
Status: upstream: reported C repro on 2020/08/10 15:36
Reported-by: syzbot+6338dcebf269a590b668@syzkaller.appspotmail.com
First crash: 49d, last: 42d

Cause bisection: introduced by (bisect log):

commit f86cd20c9454847a524ddbdcdec32c0380ed7c9b
Author: Jens Axboe <axboe@kernel.dk>
Date: Wed Jan 29 20:46:44 2020 +0000

  io_uring: fix linked command file table usage

Crash: INFO: task hung in io_uring_flush (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log):

commit b7ddce3cbf010edbfac6c6d8cc708560a7bcd7a4
Author: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat Sep 5 21:45:14 2020 +0000

  io_uring: fix cancel of deferred reqs with ->files

duplicates (1):
Title Repro Bisected Count Last Reported Patched Status
INFO: task can't die in io_uring_flush 2 44d 49d 0/17 closed as dup on 2020/08/10 20:45

Sample crash report:

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Maintainers
ci-upstream-kasan-gce 2020/08/17 18:37 upstream 9123e3a7 424dd8e7 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/08/14 02:29 upstream 990f2273 54ce1ed6 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/08/13 14:53 upstream fb893de3 bc15f7db .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/08/12 11:57 upstream c636eef2 bb3e5fe6 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/08/12 07:32 upstream c636eef2 bb3e5fe6 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-root 2020/08/11 22:54 upstream 00e4db51 bacaf5fa .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-selinux-root 2020/08/10 09:27 upstream 9420f1ce 70301872 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-kasan-gce-386 2020/08/17 18:35 upstream 9123e3a7 424dd8e7 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/08/15 21:18 linux-next 4993e4fe 424dd8e7 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/08/13 17:16 linux-next bc09acc9 bc15f7db .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci-upstream-linux-next-kasan-gce-root 2020/08/10 23:23 linux-next f80535b9 7adc7b65 .config log report syz C axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk