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x86: check boundary in count setup resource 

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 returns too many resource entries.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Gary Hade <gary.hade@us.ibm.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Yinghai Lu 2007-11-17 16:27:01 +01:00 committed by Thomas Gleixner
parent 05dfa35e84
commit 3d9befd2cd
1 changed files with 6 additions and 0 deletions
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6
arch/x86/pci/acpi.c
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@ -77,6 +77,9 @@ count_resource(struct acpi_resource *acpi_res, void *data)
struct acpi_resource_address64 addr;
acpi_status status;
if (info->res_num >= PCI_BUS_NUM_RESOURCES)
return AE_OK;
status = resource_to_addr(acpi_res, &addr);
if (ACPI_SUCCESS(status))
info->res_num++;
@ -93,6 +96,9 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
unsigned long flags;
struct resource *root;
if (info->res_num >= PCI_BUS_NUM_RESOURCES)
return AE_OK;
status = resource_to_addr(acpi_res, &addr);
if (!ACPI_SUCCESS(status))
return AE_OK;