[IPV4]: Fix rtm_to_ifaddr() error handling.
Return negative error value (embedded in the pointer) instead of
returning NULL.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index e10794d..98a00d0 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -502,8 +502,10 @@
goto errout;
ifm = nlmsg_data(nlh);
- if (ifm->ifa_prefixlen > 32 || tb[IFA_LOCAL] == NULL)
+ if (ifm->ifa_prefixlen > 32 || tb[IFA_LOCAL] == NULL) {
+ err = -EINVAL;
goto errout;
+ }
dev = __dev_get_by_index(ifm->ifa_index);
if (dev == NULL) {