Re: [patch] nbd: blk_mq_init_queue returns an error code on failure, not NULL

From: Josef Bacik
Date: Mon Jan 09 2017 - 15:44:50 EST


On Mon, Jan 9, 2017 at 3:41 PM, Jens Axboe <axboe@xxxxxxxxx> wrote:
On 01/09/2017 01:27 PM, Omar Sandoval wrote:
On Mon, Jan 09, 2017 at 03:20:31PM -0500, Jeff Moyer wrote:
Additionally, don't assign directly to disk->queue, otherwise
blk_put_queue (called via put_disk) will choke (panic) on the errno
stored there.

Bug found by code inspection after Omar found a similar issue in
virtio_blk. Compile-tested only.

Signed-off-by: Jeff Moyer <jmoyer@xxxxxxxxxx>

Reviewed-by: Omar Sandoval <osandov@xxxxxx>

Compile-reviewed only :) Josef can probably test it if he cares enough,
but it looks right.

Looks good to me, too. Josef, you want me to queue this up directly?

Y'all are hilarious.

Reviewed-by: Josef Bacik <jbacik@xxxxxx>

Thanks,

Josef