Re: WARNING: lock held when returning to user space!

To: Jens Axboe <axboe@xxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Subject: Re: WARNING: lock held when returning to user space!
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Date: Sun, 15 Apr 2018 00:33:03 +0900
Cc: syzbot <syzbot+31e8daa8b3fc129e75f2@xxxxxxxxxxxxxxxxxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>, syzkaller-bugs@xxxxxxxxxxxxxxxx, Omar Sandoval <osandov@xxxxxxxxxxx>
In-reply-to: <63121c85-f417-cde8-510d-f275dbe81c4d@kernel.dk>
References: <00000000000082922905692da9e1@google.com> <0e998b77-14f0-aee0-8d32-bc1dd96fcc4c@kernel.dk> <CACT4Y+Y0TVJLDA5-0RGq-a-A6KKLKHZtA4pwUH2rtvR0hkiZQQ@mail.gmail.com> <63121c85-f417-cde8-510d-f275dbe81c4d@kernel.dk>
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0

The patch was sent to linux.git as commit bdac616db9bbadb9.

#syz fix: loop: fix LOOP_GET_STATUS lock imbalance

References:
- WARNING: lock held when returning to user space!
  - From: syzbot
- Re: WARNING: lock held when returning to user space!
  - From: Jens Axboe
- Re: WARNING: lock held when returning to user space!
  - From: Dmitry Vyukov
- Re: WARNING: lock held when returning to user space!
  - From: Jens Axboe