From b88c1cb2b263de9ffc3dcaa2822ef7b1fbd8575a Mon Sep 17 00:00:00 2001
From: Stefan Weil <sw@weilnetz.de>
Date: Tue, 4 Sep 2012 23:20:36 +0200
Subject: [PATCH] slirp: Fix error reported by static code analysis
Report from smatch:
slirp/tcp_subr.c:127 tcp_respond(17) error:
we previously assumed 'tp' could be null (see line 124)
Return if 'tp' is NULL.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
(cherry picked from commit e56afbc54a2132c56931f44bae1992c28119944f)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
slirp/tcp_subr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c
index 5890d7a..1542e43 100644
--- a/slirp/tcp_subr.c
+++ b/slirp/tcp_subr.c
@@ -124,7 +124,7 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
if (tp)
win = sbspace(&tp->t_socket->so_rcv);
if (m == NULL) {
- if ((m = m_get(tp->t_socket->slirp)) == NULL)
+ if (!tp || (m = m_get(tp->t_socket->slirp)) == NULL)
return;
tlen = 0;
m->m_data += IF_MAXLINKHDR;
--
1.7.12.1