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: <20100209130804.GB30014@suse.de>
Date:	Tue, 9 Feb 2010 05:08:04 -0800
From:	Greg KH <gregkh@...e.de>
To:	Roel Kluin <roel.kluin@...il.com>
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 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
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