Re: WARNING: refcount bug in kobject_add_internal

[syzbot]

syzbot has bisected this bug to:

commit 726e41097920a73e4c7c33385dcc0debb1281e18
Author: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Date:   Tue Jul 10 00:29:10 2018 +0000

    drivers: core: Remove glue dirs from sysfs earlier

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=140d6739a00000
start commit:   6fbc7275 Linux 5.2-rc7
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=160d6739a00000
console output: https://syzkaller.appspot.com/x/log.txt?x=120d6739a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=bff6583efcfaed3f
dashboard link: https://syzkaller.appspot.com/bug?extid=32259bb9bc1a487ad206
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=115bad39a00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1241bdd5a00000

Reported-by: syzbot+32259bb9bc1a487ad206@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 726e41097920 ("drivers: core: Remove glue dirs from sysfs earlier")

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