Re: [syzbot] [bcachefs?] general protection fault in __copy_super

[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=1057d107980000
start commit:   f8eb5bd9a818 mm: fix build on 32-bit targets without MAX_P..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1257d107980000
console output: https://syzkaller.appspot.com/x/log.txt?x=1457d107980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=74ffdb3b3fad1a43
dashboard link: https://syzkaller.appspot.com/bug?extid=18a5c5e8a9c856944876
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=174cca27980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15a3619f980000

Reported-by: syzbot+18a5c5e8a9c856944876@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 03ef80b469d5 ("bcachefs: Ignore unknown mount options")

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