Messages in this thread Patch in this message | | | Subject | [PATCH 3/3] virtio_ring: Use kmalloc_array() in alloc_indirect() | From | SF Markus Elfring <> | Date | Thu, 26 Jan 2017 22:47:59 +0100 |
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From: Markus Elfring <elfring@users.sourceforge.net> Date: Thu, 26 Jan 2017 22:30:45 +0100
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
* Replace the specification of a data structure by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> --- drivers/virtio/virtio_ring.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 409aeaa49246..34b6b694298c 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -247,8 +247,7 @@ static struct vring_desc *alloc_indirect(struct virtqueue *_vq, * virtqueue. */ gfp &= ~__GFP_HIGHMEM; - - desc = kmalloc(total_sg * sizeof(struct vring_desc), gfp); + desc = kmalloc_array(total_sg, sizeof(*desc), gfp); if (!desc) return NULL; -- 2.11.0
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