net/netlink_compat: Fix a missing check of nla_parse_nested

In tipc_nl_compat_sk_dump(), if nla_parse_nested() fails, it could return
an error. To be consistent with other invocations of the function call,
on error, the fix passes the return value upstream.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 6376467e78f8..21f6ccc89401 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -951,8 +951,11 @@ static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
                 u32 node;
                 struct nlattr *con[TIPC_NLA_CON_MAX + 1];
 
-                nla_parse_nested(con, TIPC_NLA_CON_MAX,
-                                 sock[TIPC_NLA_SOCK_CON], NULL, NULL);
+                err = nla_parse_nested(con, TIPC_NLA_CON_MAX,
+                                       sock[TIPC_NLA_SOCK_CON], NULL, NULL);
+
+                if (err)
+                        return err;
 
                 node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
                 tipc_tlv_sprintf(msg->rep, "  connected to <%u.%u.%u:%u>",