kernel panic: MAC Initialization failed. (3)

[syzbot]

syzbot has bisected this bug to:

commit 89a9684ea158dd7eef1728be9f0aed9a7d41cf19
Author: Kees Cook <keescook at chromium.org>
Date:   Tue Feb 12 18:23:18 2019 +0000

     LSM: Ignore "security=" when "lsm=" is specified

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11572723200000
start commit:   89a9684e LSM: Ignore "security=" when "lsm=" is specified
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=13572723200000
console output: https://syzkaller.appspot.com/x/log.txt?x=15572723200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c0f38652d28b522f
dashboard link: https://syzkaller.appspot.com/bug?extid=2ee3f8974c2e7dc69feb
userspace arch: amd64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14c68242c00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17190c8ac00000

Reported-by: syzbot+2ee3f8974c2e7dc69feb at syzkaller.appspotmail.com
Fixes: 89a9684e ("LSM: Ignore "security=" when "lsm=" is specified")