Commit 3524a55c authored by Milton Miller's avatar Milton Miller Committed by Greg Kroah-Hartman

mac80211: fix mesh forwarding when ratelimited too

commit 919bbad5 upstream.

Commit b51aff05 said:

    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.

Avoid the reference whenever the frame copy is unsuccessful
regardless of the debug message being suppressed or printed.
Signed-off-by: default avatarMilton Miller <miltonm@bga.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0d72e9a5
......@@ -1788,11 +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);
if (!fwd_skb)
goto out;
}
fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data;
memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN);
......
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