From 929fe497219cdf0f060f430a59062bd44b30ec8a Mon Sep 17 00:00:00 2001
From: Juergen Lock <nox@jelal.kn-bremen.de>
Date: Fri, 20 Nov 2009 23:23:03 +0100
Subject: [PATCH] Avoid segfault on net_tap_init() failure

Check for fd == -1 there.

Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
---
 net/tap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/tap.c b/net/tap.c
index 69c905cdc1..b2e5908c35 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -399,6 +399,9 @@ int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan
         }
 
         fd = net_tap_init(opts, &vnet_hdr);
+        if (fd == -1) {
+            return -1;
+        }
     }
 
     s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
-- 
2.11.0