Re: WARNING in __device_add_disk

[syzbot]

syzbot has bisected this bug to:

commit e41d58185f1444368873d4d7422f7664a68be61d
Author: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Date:   Wed Jul 12 21:34:35 2017 +0000

    fault-inject: support systematic fault injection

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17889f5ae00000
start commit:   6da6c0db Linux v4.17-rc3
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=14489f5ae00000
console output: https://syzkaller.appspot.com/x/log.txt?x=10489f5ae00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5a1dc06635c10d27
dashboard link: https://syzkaller.appspot.com/bug?extid=3337db851ace689ceb50
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15191837800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=120af5c7800000

Reported-by: syzbot+3337db851ace689ceb50@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e41d58185f14 ("fault-inject: support systematic fault injection")

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