[PATCH 4.2.y-ckt 250/273] rtnl: RTM_GETNETCONF: fix wrong return value

From: Kamal Mostafa
Date: Mon Mar 07 2016 - 18:06:43 EST


4.2.8-ckt5 -stable review patch. If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Anton Protopopov <a.s.protopopov@xxxxxxxxx>

[ Upstream commit a97eb33ff225f34a8124774b3373fd244f0e83ce ]

An error response from a RTM_GETNETCONF request can return the positive
error value EINVAL in the struct nlmsgerr that can mislead userspace.

Signed-off-by: Anton Protopopov <a.s.protopopov@xxxxxxxxx>
Acked-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
net/ipv4/devinet.c | 2 +-
net/ipv6/addrconf.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 2d9cb17..0420012 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1845,7 +1845,7 @@ static int inet_netconf_get_devconf(struct sk_buff *in_skb,
if (err < 0)
goto errout;

- err = EINVAL;
+ err = -EINVAL;
if (!tb[NETCONFA_IFINDEX])
goto errout;

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index ff6e0dc..335f495 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -569,7 +569,7 @@ static int inet6_netconf_get_devconf(struct sk_buff *in_skb,
if (err < 0)
goto errout;

- err = EINVAL;
+ err = -EINVAL;
if (!tb[NETCONFA_IFINDEX])
goto errout;

--
2.7.0