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ipv4: fix NULL checking in devinet_ioctl() 

The NULL pointer check `!ifa' should come before its first use.

[ Bug origin : commit fd23c3b311
  (ipv4: Add hash table of interface addresses) in linux-2.6.39 ]

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xi Wang 2013-01-05 11:19:24 +00:00 committed by David S. Miller
parent ae62ca7b03
commit c7e2e1d72e
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/devinet.c
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@ -823,9 +823,9 @@ int devinet_ioctl(struct net *net, unsigned int cmd, void __user *arg)
if (!ifa) {
ret = -ENOBUFS;
ifa = inet_alloc_ifa();
INIT_HLIST_NODE(&ifa->hash);
if (!ifa)
break;
INIT_HLIST_NODE(&ifa->hash);
if (colon)
memcpy(ifa->ifa_label, ifr.ifr_name, IFNAMSIZ);
else