Hello Jens Axboe, This is a semi-automatic email about new static checker warnings. The patch bd166ef183c2: "blk-mq-sched: add framework for MQ capable IO schedulers" from Jan 17, 2017, leads to the following Smatch complaint: block/elevator.c:234 elevator_init() error: we previously assumed 'e' could be null (see line 229) block/elevator.c 228 229 if (!e) { ^^ Null. 230 printk(KERN_ERR 231 "Default I/O scheduler not found. " \ 232 "Using noop/none.\n"); 233 if (q->mq_ops) { 234 elevator_put(e); ^^^^^^^^^^^^^^^ This will Oops. 235 return 0; 236 } regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html