linux-kernel - Re: [syzbot] [btrfs?] general protection fault in btrfs_finish_ordered

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Message-ID: <00000000000012a70f0600689326@google.com>
Date:   Thu, 13 Jul 2023 18:43:24 -0700
From:   syzbot <syzbot+5b82f0e951f8c2bcdb8f@...kaller.appspotmail.com>
To:     clm@...com, dsterba@...e.com, hch@....de,
        johannes.thumshirn@....com, josef@...icpanda.com,
        linux-btrfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [btrfs?] general protection fault in btrfs_finish_ordered_extent

syzbot has bisected this issue to:

commit b41b6f6937dc89e072b334e8d814487cb4692770
Author: Christoph Hellwig <hch@....de>
Date:   Wed May 31 07:54:09 2023 +0000

    btrfs: use btrfs_finish_ordered_extent to complete direct writes

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14761374a80000
start commit:   1c7873e33645 mm: lock newly mapped VMA with corrected orde..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16761374a80000
console output: https://syzkaller.appspot.com/x/log.txt?x=12761374a80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9831e2c2660aae77
dashboard link: https://syzkaller.appspot.com/bug?extid=5b82f0e951f8c2bcdb8f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=109dcf08a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13dadfb4a80000

Reported-by: syzbot+5b82f0e951f8c2bcdb8f@...kaller.appspotmail.com
Fixes: b41b6f6937dc ("btrfs: use btrfs_finish_ordered_extent to complete direct writes")

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