[ 3.5.yuz extended stable ] Patch "USB: sierra: fix memory leak in attach error path" has been added to staging queue

Herton Ronaldo Krzesinski herton.krzesinski at canonical.com
Thu Nov 22 04:49:51 UTC 2012

This is a note to let you know that I have just added a patch titled

    USB: sierra: fix memory leak in attach error path

to the linux-3.5.y-queue branch of the 3.5.yuz extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.yuz tree, see



>From 922fe74e184dee2d3b393c5c1f28938c016ab919 Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold at gmail.com>
Date: Thu, 25 Oct 2012 10:29:17 +0200
Subject: [PATCH] USB: sierra: fix memory leak in attach error path

commit 7e41f9bcdd2e813ea2a3c40db291d87ea06b559f upstream.

Make sure port private data is deallocated on errors in attach.

Signed-off-by: Johan Hovold <jhovold at gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
 drivers/usb/serial/sierra.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 7d7ab91..f72bbaa 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -910,7 +910,7 @@ static int sierra_startup(struct usb_serial *serial)
 			dev_dbg(&port->dev, "%s: kmalloc for "
 				"sierra_port_private (%d) failed!\n",
 				__func__, i);
-			return -ENOMEM;
+			goto err;
@@ -947,6 +947,13 @@ static int sierra_startup(struct usb_serial *serial)

 	return 0;
+	for (--i; i >= 0; --i) {
+		portdata = usb_get_serial_port_data(serial->port[i]);
+		kfree(portdata);
+	}
+	return -ENOMEM;

 static void sierra_release(struct usb_serial *serial)

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