Re: [syzbot] [bcachefs?] KASAN: use-after-free Read in check_dirent

[syzbot]

syzbot has bisected this issue to:

commit cf3da2d627037a0848e25dbaeaedfadfe534c7c4
Author: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Date:   Mon Dec 16 18:58:02 2024 +0000

    bcachefs: Handle -BCH_ERR_need_mark_replicas in gc

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10e887a4580000
start commit:   27eddbf34490 Merge tag 'net-6.14-rc4' of git://git.kernel...
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12e887a4580000
console output: https://syzkaller.appspot.com/x/log.txt?x=14e887a4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b03346163189483c
dashboard link: https://syzkaller.appspot.com/bug?extid=87078ad27cd8af3263cc
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14ce6ba4580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11300db0580000

Reported-by: syzbot+87078ad27cd8af3263cc@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: cf3da2d62703 ("bcachefs: Handle -BCH_ERR_need_mark_replicas in gc")

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