Re: KASAN: null-ptr-deref Write in io_wq_cancel_all

From: syzbot
Date: Sun Oct 27 2019 - 02:33:15 EST

syzbot has bisected this bug to:

commit d5f773aba1186142d52aef8242a426310a39fa86
Author: Jens Axboe <axboe@xxxxxxxxx>
Date: Thu Oct 24 13:25:42 2019 +0000

io_uring: replace workqueue usage with io-wq

bisection log:
start commit: 139c2d13 Add linux-next specific files for 20191025
git tree: linux-next
final crash:
console output:
kernel config:
dashboard link:
syz repro:

Reported-by: syzbot+d958a65633ea70280b23@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: d5f773aba118 ("io_uring: replace workqueue usage with io-wq")

For information about bisection process see: