[PATCH AUTOSEL for 4.4 004/115] staging: wilc1000: add check for kmalloc allocation failure.

[Sasha Levin]

From: Colin Ian King <colin.k...@canonical.com>

[ Upstream commit 6cc0c259d034c6ab48f4e12f505213988e73d380 ]

Add a sanity check that wid.val has been allocated, fixes a null
pointer deference on stamac when calling ether_add_copy.

Detected by CoverityScan, CID#1369537 ("Dereference null return value")

Signed-off-by: Colin Ian King <colin.k...@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 drivers/staging/wilc1000/host_interface.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/wilc1000/host_interface.c 
b/drivers/staging/wilc1000/host_interface.c
index dbbe72c7e255..f78353ddeea5 100644
--- a/drivers/staging/wilc1000/host_interface.c
+++ b/drivers/staging/wilc1000/host_interface.c
@@ -2179,6 +2179,8 @@ static s32 Handle_Get_InActiveTime(struct host_if_drv 
*hif_drv,
        wid.type = WID_STR;
        wid.size = ETH_ALEN;
        wid.val = kmalloc(wid.size, GFP_KERNEL);
+       if (!wid.val)
+               return -ENOMEM;
 
        stamac = wid.val;
        memcpy(stamac, strHostIfStaInactiveT->mac, ETH_ALEN);
-- 
2.14.1