On Tue, Jul 25, 2017 at 03:24:08PM -0700, Shaohua Li wrote: > Disable CONIFG_SMP, kernel crashes at boot time, here is the log. I can reproduce the issue. Unfortunately the addresss in the bug doesn't make any sense to me when resolving it using gdb, as t just points to the line where blk_mq_init_queue calls blk_alloc_queue_node. Can you check if you get better results in your build?