linux-kernel - Re: [PATCH] Fix segfault when printing battery status

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Date:	Mon, 26 Nov 2007 14:25:10 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Alexey Starikovskiy <aystarik@...il.com>
Cc:	eike-kernel@...tec.de, lenb@...nel.org, linux-acpi@...r.kernel.org,
	astarikovskiy@...e.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix segfault when printing battery status

On Mon, 19 Nov 2007 14:09:51 +0300
Alexey Starikovskiy <aystarik@...il.com> wrote:

> Rolf Eike Beer wrote:
> > Alexey Starikovskiy wrote:
> >   
> >> Rolf Eike Beer wrote:
> >>     
> >>> cat
> >>> /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:19/PNP0C0A:00/power_
> >>> supply/BAT1/status
> >>>
> >>> This leads to a stacktrace as acpi_battery_get_property() returns 0 for a
> >>> case where it does not set val->intval. These value is used as an array
> >>> index in
> >>> drivers/power/power_supply_sysfs.c::power_supply_show_property(). I had a
> >>> situation where the value was 4096 which caused a problem as the array
> >>> only has 5 entries.
> >>>
> >>> Signed-off-by: Rolf Eike Beer <eike-kernel@...tec.de>
> >>>       
> >> Rolf, thanks for remainding.
> >>     
> >
> > Huh? This one is unrelated to the problem I reported two weeks ago...
> >
> > Eike
> >   
> You are second to send the same patch, first one I already acked.
> But it seems that Len did not pick it up yet.
> Look for "ACPI: Always return valid 'status' from 
> acpi_battery_get_property()"
> if interested...
> 

This fix is in Len's tree and was in his 2.6.24-rc3 pull request to
Linus.
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