syzbot


possible deadlock in io_timeout_fn
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+ef4b654b49ed7ff049bf@syzkaller.appspotmail.com
Fix commit: 51a4cc112c7a io_uring: defer file table grabbing request cleanup for locked requests
First crash: 477d, last: 473d

Cause bisection: introduced by (bisect log) :
commit e62753e4e2926f249d088cc0517be5ed4efec6d6
Author: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Date: Sat May 23 04:31:18 2020 +0000

  io_uring: call statx directly

Crash: possible deadlock in io_timeout_fn (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in io_timeout_fn (2) 4 325d 332d 21/22 fixed on 2021/03/10 01:48

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2020/08/11 05:31 upstream fc80c51fd4b2 7adc7b65 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/08/09 19:50 upstream 06a81c1c7db9 70301872 .config log report syz C
ci-upstream-kasan-gce-smack-root 2020/08/09 03:50 upstream 449dc8c97089 f721e4a0 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/08/13 03:45 linux-next bc09acc9f224 bc15f7db .config log report syz C