Re: general protection fault in put_pid

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To: syzbot <syzbot+1145ec2e23165570c3ac@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: general protection fault in put_pid
From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Date: Wed, 27 Mar 2019 13:27:12 -0700
Cc: akpm@xxxxxxxxxxxxxxxxxxxx, clm@xxxxxx, dan.carpenter@xxxxxxxxxx, dave@xxxxxxxxxxxx, dhowells@xxxxxxxxxx, dsterba@xxxxxxxx, dvyukov@xxxxxxxxxx, ebiederm@xxxxxxxxxxxx, jbacik@xxxxxx, ktkhai@xxxxxxxxxxxxx, ktsanaktsidis@xxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, manfred@xxxxxxxxxxxxxxxx, mhocko@xxxxxxxx, nborisov@xxxxxxxx, penguin-kernel@xxxxxxxxxxxxxxxxxxx, rppt@xxxxxxxxxxxxxxxxxx, sfr@xxxxxxxxxxxxxxxx, shakeelb@xxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx, vdavydov.dev@xxxxxxxxx
In-reply-to: <000000000000c58fcf058519059e@google.com>
References: <00000000000051ee78057cc4d98f@google.com> <000000000000c58fcf058519059e@google.com>
User-agent: Mutt/1.9.2 (2017-12-15)

On Wed, Mar 27, 2019 at 01:10:01PM -0700, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit b9b8a41adeff5666b402996020b698504c927353
> Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Date:   Mon Aug 20 08:25:33 2018 +0000
> 
>     btrfs: use after free in btrfs_quota_enable

Not plausible.  Try again.

Follow-Ups:
- Re: general protection fault in put_pid
  - From: David Sterba

References:
- Re: general protection fault in put_pid
  - From: syzbot

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