Re: [syzbot] [btrfs?] kernel BUG in create_pending_snapshot

[David Sterba]

On Fri, Oct 27, 2023 at 04:11:06AM -0700, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit df9f278239046719c91aeb59ec0afb1a99ee8b2b
> Author: Filipe Manana <fdmanana@xxxxxxxx>
> Date:   Tue Jun 13 15:42:16 2023 +0000
> 
>     btrfs: do not BUG_ON on failure to get dir index for new snapshot
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1584c385680000
> start commit:   0136d86b7852 Merge tag 'block-6.2-2023-02-03' of git://git..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5ea620bd01d9130d
> dashboard link: https://syzkaller.appspot.com/bug?extid=d56e0d33caf7d1a02821
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14657573480000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16dd145d480000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: btrfs: do not BUG_ON on failure to get dir index for new snapshot

Yes, that's correct.

#syz fix: btrfs: do not BUG_ON on failure to get dir index for new snapshot