skbuff: fix ftrace handling in skb_unshare
If the skb is not dropped afterwards we should run consume_skb instead
kfree_skb. Inside of function skb_unshare we do always a kfree_skb,
doesn't depend if skb_copy failed or was successful.
This patch switch this behaviour like skb_share_check, if allocation of
sk_buff failed we use kfree_skb otherwise consume_skb.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 3ab0749..a59d934 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1203,7 +1203,12 @@
might_sleep_if(pri & __GFP_WAIT);
if (skb_cloned(skb)) {
struct sk_buff *nskb = skb_copy(skb, pri);
- kfree_skb(skb); /* Free our shared copy */
+
+ /* Free our shared copy */
+ if (likely(nskb))
+ consume_skb(skb);
+ else
+ kfree_skb(skb);
skb = nskb;
}
return skb;