On Fri, 2017-03-31 at 14:47 +0200, Paolo Valente wrote: > + entity->weight_counter = kzalloc(sizeof(struct bfq_weight_counter), > + GFP_ATOMIC); > + entity->weight_counter->weight = entity->weight; GFP_ATOMIC allocations are more likely to fail than GFP_KERNEL allocations. What will happen if kzalloc() returns NULL? Bart.