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

[syzbot]

syzbot has bisected this issue to:

commit 85724171b302914bb8999b9df091fd4616a36eb7
Author: Christoph Hellwig <hch@xxxxxx>
Date:   Tue May 23 08:40:18 2023 +0000

    btrfs: fix the btrfs_get_global_root return value

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12343ac5a80000
start commit:   d192f5382581 Merge tag 'arm64-fixes' of git://git.kernel.o..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=11343ac5a80000
console output: https://syzkaller.appspot.com/x/log.txt?x=16343ac5a80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a4507c291b5ab5d4
dashboard link: https://syzkaller.appspot.com/bug?extid=ae97a827ae1c3336bbb4
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1230cc11a80000

Reported-by: syzbot+ae97a827ae1c3336bbb4@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 85724171b302 ("btrfs: fix the btrfs_get_global_root return value")

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