Re: [3.15-rc3] BUG: null ptr dereference in ichx_gpio_request_regions()

From: Peter Hurley
Date: Wed May 07 2014 - 10:34:11 EST


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@xxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Vincent Donnefort <vdonnefort@xxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>


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.

Regards,
Peter Hurley
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