linux-kernel - [069/152] econet: Do the correct cleanup after an unprivileged SIOCSIFADDR.

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Date:	Wed, 05 Jan 2011 16:22:48 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Nelson Elhage <nelhage@...lice.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [069/152] econet: Do the correct cleanup after an unprivileged SIOCSIFADDR.

2.6.36-stable review patch.  If anyone has any objections, please let us know.

------------------


From: Nelson Elhage <nelhage@...lice.com>

[ Upstream commit f24b8bedf70c524775eabd51570c3fa7708a97b7 ]

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@...lice.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 net/econet/af_econet.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -661,8 +661,10 @@ static int ec_dev_ioctl(struct socket *s
 	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) {


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