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

login
register
mail settings
Submitter Herton Ronaldo Krzesinski
Date Nov. 22, 2012, 4:49 a.m.
Message ID <1353559791-3535-1-git-send-email-herton.krzesinski@canonical.com>
Download mbox | patch
Permalink /patch/201001/
State New
Headers show

Comments

Herton Ronaldo Krzesinski - Nov. 22, 2012, 4:49 a.m.
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:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

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
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

From 922fe74e184dee2d3b393c5c1f28938c016ab919 Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@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@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
---
 drivers/usb/serial/sierra.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--
1.7.9.5

Patch

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;
 		}
 		spin_lock_init(&portdata->lock);
 		init_usb_anchor(&portdata->active);
@@ -947,6 +947,13 @@  static int sierra_startup(struct usb_serial *serial)
 	}

 	return 0;
+err:
+	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)