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add extra safety for the packet mangling in the mvswitch driver

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11880 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
Felix Fietkau
2008-07-19 23:09:43 +00:00
parent 64f3898513
commit 947a74570d
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)