Re: [syzbot] [bcachefs?] kernel BUG in __bkey_unpack_pos (2)

[syzbot]

syzbot has bisected this issue to:

commit 03ef80b469d5d83530ce1ce15be78a40e5300f9b
Author: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Date:   Sat Sep 23 22:41:51 2023 +0000

    bcachefs: Ignore unknown mount options

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15093adf980000
start commit:   d6ef8b40d075 Merge tag 'sound-6.13-rc5' of git://git.kerne..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17093adf980000
console output: https://syzkaller.appspot.com/x/log.txt?x=13093adf980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4c4096b0d467a682
dashboard link: https://syzkaller.appspot.com/bug?extid=c5e7a66b3b23ae65d44f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1679a0b0580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=127712f8580000

Reported-by: syzbot+c5e7a66b3b23ae65d44f@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 03ef80b469d5 ("bcachefs: Ignore unknown mount options")

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