Re: [syzbot] [udf?] KASAN: slab-use-after-free Read in udf_free_blocks

[syzbot]

syzbot has bisected this issue to:

commit 36273e5b4e3a934c6d346c8f0b16b97e018094af
Author: Christoph Hellwig <hch@xxxxxx>
Date:   Sun Nov 13 16:29:02 2022 +0000

    udf: remove ->writepage

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14d71cece80000
start commit:   123212f53f3e Add linux-next specific files for 20230707
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16d71cece80000
console output: https://syzkaller.appspot.com/x/log.txt?x=12d71cece80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=15ec80b62f588543
dashboard link: https://syzkaller.appspot.com/bug?extid=0b7937459742a0a4cffd
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15be1190a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17d4666aa80000

Reported-by: syzbot+0b7937459742a0a4cffd@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 36273e5b4e3a ("udf: remove ->writepage")

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