mac80211: Don't access sk_queue_head->next directly.

Use __skb_peek() instead.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c6bfd4019d44..a0ca27aeb732 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2077,6 +2077,7 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
         idx = sdata->fragment_next;
         for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
                 struct ieee80211_hdr *f_hdr;
+                struct sk_buff *f_skb;
 
                 idx--;
                 if (idx < 0)
@@ -2088,7 +2089,8 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
                     entry->last_frag + 1 != frag)
                         continue;
 
-                f_hdr = (struct ieee80211_hdr *)entry->skb_list.next->data;
+                f_skb = __skb_peek(&entry->skb_list);
+                f_hdr = (struct ieee80211_hdr *) f_skb->data;
 
                 /*
                  * Check ftype and addresses are equal, else check next fragment