From 99c145939bc1f65f9b946f2b9dd7bfc1f44783d6 Mon Sep 17 00:00:00 2001
From: Allan Stephens <allan.stephens@windriver.com>
Date: Wed, 4 Jun 2008 17:48:25 -0700
Subject: [PATCH] tipc: Fix bugs in rejection of message with short header
This patch ensures that TIPC doesn't try to access non-existent
message header fields when rejecting a message with a short header.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/tipc/port.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/net/tipc/port.c b/net/tipc/port.c
index 93014f9bc95f..2e0cff408ff9 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -448,13 +448,15 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
msg_set_errcode(rmsg, err);
msg_set_destport(rmsg, msg_origport(msg));
msg_set_origport(rmsg, msg_destport(msg));
- if (msg_short(msg))
+ if (msg_short(msg)) {
msg_set_orignode(rmsg, tipc_own_addr);
- else
+ /* leave name type & instance as zeroes */
+ } else {
msg_set_orignode(rmsg, msg_destnode(msg));
+ msg_set_nametype(rmsg, msg_nametype(msg));
+ msg_set_nameinst(rmsg, msg_nameinst(msg));
+ }
msg_set_size(rmsg, data_sz + hdr_sz);
- msg_set_nametype(rmsg, msg_nametype(msg));
- msg_set_nameinst(rmsg, msg_nameinst(msg));
skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz);
/* send self-abort message when rejecting on a connected port */