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

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Message-ID: <CACRpkdZ_Wz2QLbdbXEL9CWy+=tcVwjVjVqQgYw7_dy-5FwxB9Q@mail.gmail.com>
Date:	Thu, 8 May 2014 23:48:32 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Vincent Donnefort <vdonnefort@...il.com>,
	Lee Jones <lee.jones@...aro.org>,
	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [3.15-rc3] BUG: null ptr dereference in ichx_gpio_request_regions()

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?

Yours,
Linus Walleij
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