linux-kernel - Re: [PATCH] USB: don't read past config->interface[] if usb_control_msg() fails in usb_reset

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Message-ID: <25e057c01002090515v2f4329aj9220985963bb41d0@mail.gmail.com>
Date:	Tue, 9 Feb 2010 14:15:35 +0100
From:	roel kluin <roel.kluin@...il.com>
To:	Greg KH <gregkh@...e.de>
Cc:	sarah.a.sharp@...ux.intel.com, linux-usb@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] USB: don't read past config->interface[] if 
	usb_control_msg() fails in usb_reset_configuration()

On Tue, Feb 9, 2010 at 2:08 PM, Greg KH <gregkh@...e.de> wrote:
> On Tue, Feb 09, 2010 at 02:00:05PM +0100, Roel Kluin wrote:
>> After the loop `for (i = 0; i < config->desc.bNumInterfaces; i++)' if no
>> break occurred, i equals config->desc.bNumInterfaces. so if
>> usb_control_msg() failed then after goto reset_old_alts we read from
>> config->interface[config->desc.bNumInterfaces].
>>
>> Signed-off-by: Roel Kluin <roel.kluin@...il.com>
>
> Have you seen this happen on real hardware?
>
> curious,
>
> greg k-h
>

No, I just found it in the code,

Thanks, Roel
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