linux-kernel - [ 044/171] usb: use usb_serial_put in usb_serial

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20121122004037.788788000@linuxfoundation.org>
Date:	Wed, 21 Nov 2012 16:39:50 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Jan Safrata <jan.nikitenko@...il.com>,
	Johan Hovold <jhovold@...il.com>,
	Richard Retanubun <richardretanubun@...gedcom.com>
Subject: [ 044/171] usb: use usb_serial_put in usb_serial_probe errors

3.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Jan Safrata <jan.nikitenko@...il.com>

commit 0658a3366db7e27fa32c12e886230bb58c414c92 upstream.

The use of kfree(serial) in error cases of usb_serial_probe
was invalid - usb_serial structure allocated in create_serial()
gets reference of usb_device that needs to be put, so we need
to use usb_serial_put() instead of simple kfree().

Signed-off-by: Jan Safrata <jan.nikitenko@...il.com>
Acked-by: Johan Hovold <jhovold@...il.com>
Cc: Richard Retanubun <richardretanubun@...gedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/serial/usb-serial.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -768,7 +768,7 @@ int usb_serial_probe(struct usb_interfac
 
 		if (retval) {
 			dbg("sub driver rejected device");
-			kfree(serial);
+			usb_serial_put(serial);
 			module_put(type->driver.owner);
 			return retval;
 		}
@@ -840,7 +840,7 @@ int usb_serial_probe(struct usb_interfac
 		 */
 		if (num_bulk_in == 0 || num_bulk_out == 0) {
 			dev_info(&interface->dev, "PL-2303 hack: descriptors matched but endpoints did not\n");
-			kfree(serial);
+			usb_serial_put(serial);
 			module_put(type->driver.owner);
 			return -ENODEV;
 		}
@@ -854,7 +854,7 @@ int usb_serial_probe(struct usb_interfac
 		if (num_ports == 0) {
 			dev_err(&interface->dev,
 			    "Generic device with no bulk out, not allowed.\n");
-			kfree(serial);
+			usb_serial_put(serial);
 			module_put(type->driver.owner);
 			return -EIO;
 		}


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/