On Thu, Feb 28, 2019 at 11:11 AM Tetsuo Handa
[off-list ref] wrote:

On 2019/02/28 15:42, syzbot wrote:

quoted

Hello,

syzbot found the following crash on:

HEAD commit:    7b827ff9af88 Add linux-next specific files for 20190227
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=10f71894c00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5fa6b8975759dcc5
dashboard link: https://syzkaller.appspot.com/bug?extid=29569ed06425fcf67a95
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=113a8242c00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154d6bd0c00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+29569ed06425fcf67a95@syzkaller.appspotmail.com

Memory allocation failure due to fault injection before loading policy.

#syz dup: kernel panic: MAC Initialization failed.

How/why is not this "user crashes system"? Kernel must not panic on
OOM. There is memcg as well.