On Sun, 2017-05-28 at 13:33 +0800, kernel test robot wrote: > [ 207.874416] WARNING: CPU: 0 PID: 419 at block/blk-merge.c:674 > attempt_merge+0xd1/0x11a6
I will fix this by adding if (!q->mq_ops) in front of the lockdep_assert_held() statement in attempt_merge(). Bart.
