On Tue, May 15, 2018 at 04:00:33PM +0800, kernel test robot wrote:

> [   11.182501] Code: 00 00 00 eb e6 cc cc cc cc cc cc cc cc cc cc cc cc cc fa 8d b6 00 00 00 00 e8 5d e8 8f ff 8b 44 24 34 83 e0 03 83 f8 03 72 28 cc <cc> cc cc cc cc cc cc fa 8d b6 00 00 00 00 e8 3d e8 8f ff 89 e0 
> [   11.184326] EIP: ret_from_intr+0xd/0x14 SS:ESP: 0068:8603bfb4

INT3 slipped through M586 => X86_ALIGNMENT_16 :-\