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[Qemu-devel] [PATCH 2/2] slirp: Fix error reported by static code analys
From: |
Stefan Weil |
Subject: |
[Qemu-devel] [PATCH 2/2] slirp: Fix error reported by static code analysis |
Date: |
Tue, 4 Sep 2012 23:20:36 +0200 |
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 <address@hidden>
---
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;
--
1.7.10