F.Y.I. Nothing is wrong with that commit. That commit merely allows enabling TOMOYO and one of SELinux/Smack/AppArmor at the same time for syzbot's kernel command line options. This problem will be handled by a patch at https://lore.kernel.org/linux-security-module/1551362770-8655-1-git-send-email-penguin-ker...@i-love.sakura.ne.jp/ and then updating syzbot to build kernels with this option enabled.
Well, it is wonderful that syzbot started bisecting. ;-) On 2019/03/11 22:26, syzbot wrote: > syzbot has bisected this bug to: > > commit 89a9684ea158dd7eef1728be9f0aed9a7d41cf19 > Author: Kees Cook <keesc...@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+2ee3f8974c2e7dc69...@syzkaller.appspotmail.com > Fixes: 89a9684e ("LSM: Ignore "security=" when "lsm=" is specified") >