netdev - [patch] sctp: fix test for end of loop

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Date:	Mon, 6 Sep 2010 14:26:39 +0200
From:	Dan Carpenter <error27@...il.com>
To:	Vlad Yasevich <vladislav.yasevich@...com>
Cc:	Sridhar Samudrala <sri@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Wei Yongjun <yjwei@...fujitsu.com>,
	Thadeu Lima de Souza Cascardo <cascardo@...oscopio.com>,
	linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] sctp: fix test for end of loop

"new_addr" is the list cursor here and it's always non-NULL.

We're trying to test if we exited because the loop ended or we hit the
break statement.  Really testing !found is enough so long as 
"new_asoc->peer.transport_addr_list" is not empty and I believe it never
is empty at this point.  So this is never really a bug with the current
code.

Signed-off-by: Dan Carpenter <error27@...il.com>
---
Compile tested only.

diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 24b2cd5..cb76d2e 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -1254,7 +1254,6 @@ static int sctp_sf_check_restart_addrs(const struct sctp_association *new_asoc,
 	/* Search through all current addresses and make sure
 	 * we aren't adding any new ones.
 	 */
-	new_addr = NULL;
 	found = 0;
 
 	list_for_each_entry(new_addr, &new_asoc->peer.transport_addr_list,
@@ -1273,7 +1272,8 @@ static int sctp_sf_check_restart_addrs(const struct sctp_association *new_asoc,
 	}
 
 	/* If a new address was added, ABORT the sender. */
-	if (!found && new_addr) {
+	if (!found &&
+	    &new_addr->transports != &new_asoc->peer.transport_addr_list) {
 		sctp_sf_send_restart_abort(&new_addr->ipaddr, init, commands);
 	}
 
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