cfg80211: handle failed skb allocation

Handle the case when dev_alloc_skb returns NULL.

Cc: stable@vger.kernel.org
Fixes: 2b67f944f88c2 ("cfg80211: reuse existing page fragments in A-MSDU rx")
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>

diff --git a/net/wireless/util.c b/net/wireless/util.c
index 2443ee3..b7d1592 100644 (file)
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -721,6 +721,8 @@ __ieee80211_amsdu_copy(struct sk_buff *skb, unsigned int hlen,
         * alignment since sizeof(struct ethhdr) is 14.
         */
        frame = dev_alloc_skb(hlen + sizeof(struct ethhdr) + 2 + cur_len);
+       if (!frame)
+               return NULL;
 
        skb_reserve(frame, hlen + sizeof(struct ethhdr) + 2);
        skb_copy_bits(skb, offset, skb_put(frame, cur_len), cur_len);