linux-kernel - Re: [3.15-rc3] BUG: null ptr dereference in ichx_gpio_request

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Date:	Fri, 9 May 2014 08:20:50 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	Vincent Donnefort <vdonnefort@...il.com>,
	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [3.15-rc3] BUG: null ptr dereference in
 ichx_gpio_request_regions()

On Thu, 08 May 2014, Linus Walleij wrote:

> On Wed, May 7, 2014 at 4:33 PM, Peter Hurley <peter@...leysoftware.com> wrote:
> > Hi Vincent,
> >
> > On 05/07/2014 10:05 AM, Vincent Donnefort wrote:
> >>
> >> Hello Peter,
> >
> >
> >>> This is almost certainly caused by the uninitialized regs ptr
> >>> in the ich6_desc struct (i3100_desc struct has the same problem)
> >>> introduced in this commit:
> >>>
> >>> commit bb62a35bd5d96e506af0ea8dd145480b9172a2a6
> >>> Author: Vincent Donnefort <vdonnefort@...il.com>
> >>> Date:   Fri Feb 14 15:01:56 2014 +0100
> >>>
> >>>      gpio: ich: Add support for multiple register addresses
> >>>
> >>>      This patch introduces regs and reglen pointers which allow a chipset
> >>> to have
> >>>      register addresses differing from ICH ones.
> >>>
> >>>      Acked-by: Linus Walleij <linus.walleij@...aro.org>
> >>>      Signed-off-by: Vincent Donnefort <vdonnefort@...il.com>
> >>>      Signed-off-by: Lee Jones <lee.jones@...aro.org>
> >>>
> >>
> >> Yes indeed, this must be linked to this thread
> >> https://lkml.org/lkml/2014/4/15/292
> >
> >
> > Thanks for the link.
> >
> > I searched through LKML but without the driver name or the offending
> > function
> > in the commit message I couldn't find it.
> >
> > Linus,
> >
> > What tree is this bug fix trapped in? I see it didn't make -rc4 either.
> 
> Since the last signoff is Lee I guess it's in the MFD tree?

This patch is in Mainline.

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-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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