Subject: [PATCH] netfilter: sctp chunk mapping doesn't work

From: Nicolas Dichtel <[email-masked]>
Date: Thu, 05 Feb 2009 10:26:58 +0100

When user tries to map all chunks given in argument, kernel works on a copy of 
the chunkmap, but at the end it doesn't check the copy, but the orginal one.

Signed-off-by: Qu Haoran <[email-masked]>
Signed-off-by: Nicolas Dichtel <[email-masked]>
--- linux-2.6.28.2/net/netfilter/xt_sctp.c	2009-01-24 19:42:07.000000000 -0500
+++ linux-2.6.28.2-new/net/netfilter/xt_sctp.c	2009-02-05 04:13:31.000000000 -0500
@@ -105,7 +105,7 @@ match_packet(const struct sk_buff *skb,
 
 	switch (chunk_match_type) {
 	case SCTP_CHUNK_MATCH_ALL:
-		return SCTP_CHUNKMAP_IS_CLEAR(info->chunkmap);
+		return SCTP_CHUNKMAP_IS_CLEAR(chunkmapcopy);
 	case SCTP_CHUNK_MATCH_ANY:
 		return false;
 	case SCTP_CHUNK_MATCH_ONLY: