linux-kernel - Re: general protection fault in put

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Date:   Wed, 27 Mar 2019 13:10:01 -0700
From:   syzbot <syzbot+1145ec2e23165570c3ac@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, clm@...com, dan.carpenter@...cle.com,
        dave@...olabs.net, dhowells@...hat.com, dsterba@...e.com,
        dvyukov@...gle.com, ebiederm@...ssion.com, jbacik@...com,
        ktkhai@...tuozzo.com, ktsanaktsidis@...desk.com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, manfred@...orfullife.com, mhocko@...e.com,
        nborisov@...e.com, penguin-kernel@...ove.SAKURA.ne.jp,
        penguin-kernel@...ove.sakura.ne.jp, rppt@...ux.vnet.ibm.com,
        sfr@...b.auug.org.au, shakeelb@...gle.com,
        syzkaller-bugs@...glegroups.com, vdavydov.dev@...il.com,
        willy@...radead.org
Subject: Re: general protection fault in put_pid

syzbot has bisected this bug to:

commit b9b8a41adeff5666b402996020b698504c927353
Author: Dan Carpenter <dan.carpenter@...cle.com>
Date:   Mon Aug 20 08:25:33 2018 +0000

     btrfs: use after free in btrfs_quota_enable

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14155a1f200000
start commit:   f5d58277 Merge branch 'for-linus' of git://git.kernel.org/..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=16155a1f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=12155a1f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c8970c89a0efbb23
dashboard link: https://syzkaller.appspot.com/bug?extid=1145ec2e23165570c3ac
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16803afb400000

Reported-by: syzbot+1145ec2e23165570c3ac@...kaller.appspotmail.com
Fixes: b9b8a41adeff ("btrfs: use after free in btrfs_quota_enable")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection