Am 21.03.2018 20:19, schrieb Colin King:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> There are three kmalloc allocations that are not null checked which
> potentially could lead to null pointer dereference issues. Fix this
> by adding null pointer return checks.
>
> Detected by CoverityScan, CID#1466025-27 ("Dereference null return")
>
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
> drivers/staging/wilc1000/host_interface.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/staging/wilc1000/host_interface.c
> b/drivers/staging/wilc1000/host_interface.c
> index 5082ede720f0..9b9b86654958 100644
> --- a/drivers/staging/wilc1000/host_interface.c
> +++ b/drivers/staging/wilc1000/host_interface.c
> @@ -944,6 +944,10 @@ static s32 handle_connect(struct wilc_vif *vif,
>
> if (conn_attr->bssid) {
> hif_drv->usr_conn_req.bssid = kmalloc(6, GFP_KERNEL);
> + if (!hif_drv->usr_conn_req.bssid) {
> + result = -ENOMEM;
> + goto error;
> + }
> memcpy(hif_drv->usr_conn_req.bssid, conn_attr->bssid, 6);
> }
>
Perhaps these malloc+memcpy can be replaced with a single kmemdup() ?
re,
wh
> @@ -951,6 +955,10 @@ static s32 handle_connect(struct wilc_vif *vif,
> if (conn_attr->ssid) {
> hif_drv->usr_conn_req.ssid = kmalloc(conn_attr->ssid_len + 1,
> GFP_KERNEL);
> + if (!hif_drv->usr_conn_req.ssid) {
> + result = -ENOMEM;
> + goto error;
> + }
> memcpy(hif_drv->usr_conn_req.ssid,
> conn_attr->ssid,
> conn_attr->ssid_len);
> @@ -961,6 +969,10 @@ static s32 handle_connect(struct wilc_vif *vif,
> if (conn_attr->ies) {
> hif_drv->usr_conn_req.ies = kmalloc(conn_attr->ies_len,
> GFP_KERNEL);
> + if (!hif_drv->usr_conn_req.ies) {
> + result = -ENOMEM;
> + goto error;
> + }
> memcpy(hif_drv->usr_conn_req.ies,
> conn_attr->ies,
> conn_attr->ies_len);
--
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