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authorJohannes Berg <johannes.berg@intel.com>2010-12-22 10:15:07 +0100
committerJohn W. Linville <linville@tuxdriver.com>2010-12-22 13:36:35 -0500
commitb51aff057c9d0ef6c529dc25fd9f775faf7b6c63 (patch)
tree57f268b9553fa77f5a5337fb5be4355c63b44d1b /net
parentb2b7ab22fa2e619c20917e825c0da7212ca2efc9 (diff)
downloadop-kernel-dev-b51aff057c9d0ef6c529dc25fd9f775faf7b6c63.zip
op-kernel-dev-b51aff057c9d0ef6c529dc25fd9f775faf7b6c63.tar.gz
mac80211: fix mesh forwarding
Under memory pressure, the mac80211 mesh code may helpfully print a message that it failed to clone a mesh frame and then will proceed to crash trying to use it anyway. Fix that. Cc: stable@kernel.org [2.6.27+] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/rx.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 54fb4a0e..b01e467 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1788,9 +1788,11 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
fwd_skb = skb_copy(skb, GFP_ATOMIC);
- if (!fwd_skb && net_ratelimit())
+ if (!fwd_skb && net_ratelimit()) {
printk(KERN_DEBUG "%s: failed to clone mesh frame\n",
sdata->name);
+ goto out;
+ }
fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data;
memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN);
@@ -1828,6 +1830,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
}
}
+ out:
if (is_multicast_ether_addr(hdr->addr1) ||
sdata->dev->flags & IFF_PROMISC)
return RX_CONTINUE;
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