Re: KASAN: use-after-free Read in reiserfs_fill_super

[syzbot]

syzbot suspects this issue was fixed by commit:

commit d24396c5290ba8ab04ba505176874c4e04a2d53c
Author: Rustam Kovhaev <rkovhaev@xxxxxxxxx>
Date:   Sun Nov 1 14:09:58 2020 +0000

    reiserfs: add check for an invalid ih_entry_count

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=113a2d57500000
start commit:   b3298500 Merge tag 'for-5.10/dm-fixes' of git://git.kernel..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=e49433cfed49b7d9
dashboard link: https://syzkaller.appspot.com/bug?extid=2b5c012223e37b7c2a88
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12ad719b500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11193117500000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: reiserfs: add check for an invalid ih_entry_count

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