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add extra safety for the packet mangling in the mvswitch driver

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SVN-Revision: 11880
This commit is contained in:
Felix Fietkau 2008-07-19 23:09:43 +00:00
parent f8e0d6edb9
commit 87e673487a
1 changed files with 1 additions and 1 deletions
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2
target/linux/generic-2.6/files/drivers/net/phy/mvswitch.c
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@ -78,7 +78,7 @@ mvswitch_mangle_tx(struct sk_buff *skb, struct net_device *dev)
if (__vlan_hwaccel_get_tag(skb, &vid))
goto error;
if ((skb->len <= 62) || (skb_headroom(skb) < MV_HEADER_SIZE)) {
if (skb_cloned(skb) || (skb->len <= 62) || (skb_headroom(skb) < MV_HEADER_SIZE)) {
if (pskb_expand_head(skb, MV_HEADER_SIZE, 0, GFP_ATOMIC))
goto error_expand;
if (skb->len < 62)