linux-kernel - [34-longterm 148/209] econet: Do the correct cleanup after an unprivileged SIOCSIFADDR.

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Message-Id: <1302803767-9715-35-git-send-email-paul.gortmaker@windriver.com>
Date:	Thu, 14 Apr 2011 13:55:06 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	stable@...nel.org, linux-kernel@...r.kernel.org
Cc:	stable-review@...nel.org, Nelson Elhage <nelhage@...lice.com>,
	"David S. Miller" <davem@...emloft.net>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [34-longterm 148/209] econet: Do the correct cleanup after an unprivileged SIOCSIFADDR.

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

  =====================================================================
  | This is a commit scheduled for the next v2.6.34 longterm release. |
  | If you see a problem with using this for longterm, please comment.|
  =====================================================================

commit 0c62fc6dd02c8d793c75ae76a9b6881fc36388ad upstream

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: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 net/econet/af_econet.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 2e41c76..e40e6b0 100644
--- 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) {
-- 
1.7.4.4

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