commit 78e5b8916e7db119850f57ce8548fbb9767078fc
author Patrick McHardy <kaber@trash.net> Wed Sep 13 20:35:36 2006 -0700
committer David S. Miller <davem@sunset.davemloft.net> Fri Sep 22 15:18:50 2006 -0700
tree 1aa44a67101b354279d4edc98afc6c4ae1389a88
parent d1d9facfd1b326e0df587c96f0ee55de2ae9f946

[RTNETLINK]: Fix netdevice name corruption

When changing a device by ifindex without including a IFLA_IFNAME
attribute, the ifname variable contains random garbage and is used
to change the device name.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/rtnetlink.c

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 63b882a..d8e25e0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -394,6 +394,8 @@
 
 	if (tb[IFLA_IFNAME])
 		nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+	else
+		ifname[0] = '\0';
 
 	err = -EINVAL;
 	ifm = nlmsg_data(nlh);