> On Feb 18, 2017, at 11:07 PM, SF Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx> wrote:
>
> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Sat, 18 Feb 2017 10:32:32 +0100
>
> Multiplications for the size determination of memory allocations
> indicated that array data structures should be processed.
> Thus use the corresponding function "kmalloc_array".
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/infiniband/hw/mlx4/main.c | 14 +++++++++-----
> 1 file changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
> index ba6af84cc236..350c9148340e 100644
> --- a/drivers/infiniband/hw/mlx4/main.c
> +++ b/drivers/infiniband/hw/mlx4/main.c
> @@ -304,7 +304,9 @@ static int mlx4_ib_add_gid(struct ib_device *device,
> ctx->refcount++;
> }
> if (!ret && hw_update) {
> - gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
> + gids = kmalloc_array(MLX4_MAX_PORT_GIDS,
> + sizeof(*gids),
> + GFP_ATOMIC);
> if (!gids) {
> ret = -ENOMEM;
> } else {
> @@ -359,7 +361,9 @@ static int mlx4_ib_del_gid(struct ib_device *device,
> if (!ret && hw_update) {
> int i;
>
> - gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC);
> + gids = kmalloc_array(MLX4_MAX_PORT_GIDS,
> + sizeof(*gids),
> + GFP_ATOMIC);
> if (!gids) {
> ret = -ENOMEM;
> } else {
> @@ -2828,9 +2832,9 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
> goto err_counter;
>
> ibdev->ib_uc_qpns_bitmap =
> - kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) *
> - sizeof(long),
> - GFP_KERNEL);
> + kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count),
> + sizeof(long),
> + GFP_KERNEL);
> if (!ibdev->ib_uc_qpns_bitmap)
> goto err_steer_qp_release;
>
> --
> 2.11.1
>
> --
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Thanks,
Reviewed-by: Majd Dibbiny
<majd@xxxxxxxxxxxx>--
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