Attachment 314390 Details for Bug 458988 – RHEL5 fix for this issue

[patch] RHEL5 fix for this issue

458988.patch (text/plain), 1.02 KB, created by Prarit Bhargava on 2008-08-15 14:15:39 UTC

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Creator: Prarit Bhargava

Created: 2008-08-15 14:15:39 UTC

Size: 1.02 KB

patch

obsolete

>Backport of
>
>http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d9befd2cdf65b1768b0d3078a65cc0ae9aa6412
>
>Prevent ACPI resources from overrunning an array and corrupting memory.  This
>causes Unisys systems to crash.
>
>Compiled and boot tested by me.  Tested by customer.
>
>Resolves BZ 458988.
>
>diff --git a/arch/i386/pci/acpi.c b/arch/i386/pci/acpi.c
>index 1151a06..cae88fe 100644
>--- a/arch/i386/pci/acpi.c
>+++ b/arch/i386/pci/acpi.c
>@@ -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;

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Attachments on bug 458988: 314223 | 314271 | 314272 | 314342 | 314390