Re: KASAN: slab-out-of-bounds Read in find_first_zero_bit

[syzbot]

syzbot suspects this bug was fixed by commit:

commit d1877155891020cb26ad4fba45bfee52d8da9951
Author: Tigran Aivazian <aivazian.tigran@xxxxxxxxx>
Date:   Thu Jan 3 23:28:14 2019 +0000

    bfs: extra sanity checking and static inode bitmap

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16634ee8600000
start commit:   b5dbc287 Merge tag 'kbuild-fixes-v4.16-3' of git://git.ker..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d9b0d91297e224bc
dashboard link: https://syzkaller.appspot.com/bug?extid=a88c8270030dc5d71e4f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16cf65d3800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16d99ab3800000

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

#syz fix: bfs: extra sanity checking and static inode bitmap

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