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Message-Id: <1209924962.3655.8.camel@johannes.berg> Date: Sun, 04 May 2008 20:16:02 +0200 From: Johannes Berg <johannes@...solutions.net> To: "David S. Miller" <davem@...emloft.net> Cc: netdev <netdev@...r.kernel.org>, Herbert Xu <herbert@...dor.apana.org.au> Subject: [RFC/T] [NET] make pskb_expand_head warn when called with invalid state This makes pskb_expand_head warn when called when a socket is attached. Signed-off-by: Johannes Berg <johannes@...solutions.net> --- Based on a different patch by davem. Will also trigger with mac80211. net/core/skbuff.c | 2 ++ 1 file changed, 2 insertions(+) --- everything.orig/net/core/skbuff.c 2008-05-04 01:18:49.000000000 +0200 +++ everything/net/core/skbuff.c 2008-05-04 01:23:50.000000000 +0200 @@ -689,6 +689,8 @@ int pskb_expand_head(struct sk_buff *skb if (!data) goto nodata; + WARN_ON((nhead || ntail) && skb->sk); + /* Copy only real data... and, alas, header. This should be * optimized for the cases when header is void. */ #ifdef NET_SKBUFF_DATA_USES_OFFSET -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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