mac80211: fix a crash in the tx path

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24672 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/541-mac80211_fix_skb_copy_crash.patch b/package/mac80211/patches/541-mac80211_fix_skb_copy_crash.patch
new file mode 100644 (file)
index 0000000..810df58
--- /dev/null
+++ b/package/mac80211/patches/541-mac80211_fix_skb_copy_crash.patch
@@ -0,0 +1,19 @@
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1748,7 +1748,7 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+ {
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       struct ieee80211_local *local = sdata->local;
+-      struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++      struct ieee80211_tx_info *info;
+       int ret = NETDEV_TX_BUSY, head_need;
+       u16 ethertype, hdrlen,  meshhdrlen = 0;
+       __le16 fc;
+@@ -2039,6 +2039,7 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+       skb_set_network_header(skb, nh_pos);
+       skb_set_transport_header(skb, h_pos);
+ 
++      info = IEEE80211_SKB_CB(skb);
+       memset(info, 0, sizeof(*info));
+ 
+       dev->trans_start = jiffies;