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Date: Sun, 30 Oct 2016 05:28:27 +0100 From: Christophe JAILLET <christophe.jaillet@...adoo.fr> To: mpa@...gutronix.de, jbacik@...com, axboe@...com Cc: nbd-general@...ts.sourceforge.net, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org, Christophe JAILLET <christophe.jaillet@...adoo.fr> Subject: [PATCH] nbd: Fix error handling 'blk_mq_alloc_request()' returns an error pointer in case of error, not NULL. So test it with IS_ERR. Fixes: fd8383fd88a2 ("nbd: convert to blkmq") Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr> --- drivers/block/nbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 19a16b2dbb91..7a1048755914 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -599,7 +599,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd, return -EINVAL; sreq = blk_mq_alloc_request(bdev_get_queue(bdev), WRITE, 0); - if (!sreq) + if (IS_ERR(sreq)) return -ENOMEM; mutex_unlock(&nbd->tx_lock); -- 2.9.3
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