linux-kernel - Re: [PATCH] x86: check boundary in count/setup_resource called by get_current

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Message-id: <472A159A.6080106@sun.com>
Date:	Thu, 01 Nov 2007 11:06:18 -0700
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Gary Hade <gary.hade@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: Re: [PATCH] x86: check boundary in count/setup_resource called by
 get_current_resources

Andrew Morton wrote:
> On Thu, 01 Nov 2007 01:20:29 -0700 Yinghai Lu <Yinghai.Lu@....COM> wrote:
> 
>> [PATCH] x86: check boundary in count/setup_resource called by get_current_resources
>>
>> need to check info->res_num less than PCI_BUS_NUM_RESOURCES, so
>> info->bus->resource[info->res_num] = res will not beyond of bus resource array
>> when acpi resutrn too many resource entries.
>>
> 
> Isn't this a bit of a problem?  It sounds like PCI_BUS_NUM_RESOURCES is to
> small for that system?  If so, some sort of dynamic allocation might be
> needed.

sound reasonable...
i have one local patch for amd64 that will get resources from pci conf. and it will use all 8 slots for bus 0.
and transparent bus under it only can copy 5 of them.

YH
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