From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756101Ab2BAVI5 (ORCPT ); Wed, 1 Feb 2012 16:08:57 -0500 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:35855 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757148Ab2BAVIw (ORCPT ); Wed, 1 Feb 2012 16:08:52 -0500 X-Sasl-enc: zX7Xj3EzdZY6orqTITWXZAyRWelpQ+KsMJc786RXl0XX 1328130531 X-Mailbox-Line: From gregkh@clark.kroah.org Wed Feb 1 12:57:41 2012 Message-Id: <20120201205741.585485432@clark.kroah.org> User-Agent: quilt/0.51-15.1 Date: Wed, 01 Feb 2012 12:56:27 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, =?UTF-8?q?Bj=C3=B8rn=20Mork?= , Oliver Neukum Subject: [47/65] USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core In-Reply-To: <20120201210236.GA25966@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bjørn Mork commit 655e247daf52b202a6c2d0f8a06dd2051e756ce4 upstream. As it turns out, there was a mismatch between the allocated inbuf size (desc->bMaxPacketSize0, typically something like 64) and the length we specified in the URB (desc->wMaxCommand, typically something like 2048) Signed-off-by: Bjørn Mork Cc: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-wdm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -723,7 +723,7 @@ next_desc: goto err; desc->inbuf = usb_alloc_coherent(interface_to_usbdev(intf), - desc->bMaxPacketSize0, + desc->wMaxCommand, GFP_KERNEL, &desc->response->transfer_dma); if (!desc->inbuf)