econet: Do the correct cleanup after an unprivileged SIOCSIFADDR.

[ Upstream commit 0c62fc6dd02c8d793c75ae76a9b6881fc36388ad]

We need to drop the mutex and do a dev_put, so set an error code and break like
the other paths, instead of returning directly.

Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 2e41c761f414450e91669883786f872a3551cb92..e40e6b023500237a8281cef898e0a197d94a0aec 100644 (file)
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -661,8 +661,10 @@ static int ec_dev_ioctl(struct socket *sock, unsigned int cmd, void __user *arg)
        err = 0;
        switch (cmd) {
        case SIOCSIFADDR:
-               if (!capable(CAP_NET_ADMIN))
-                       return -EPERM;
+               if (!capable(CAP_NET_ADMIN)) {
+                       err = -EPERM;
+                       break;
+               }
 
                edev = dev->ec_ptr;
                if (edev == NULL) {