On 08/08/2018 11:01 AM, Vlastimil Babka wrote: > fbcon_startup() calls kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL) so > it tells slab it can sleep. The problem must be higher in the stack, > CCing printk people. Uh just noticed there was also attached dmesg which my reply converted to inline. The first problem there is a lockdep splat.