* [PATCH] Warn if packages with invalid references are evaluated
@ 2008-03-06 22:33 Thomas Renninger
2008-03-07 1:33 ` Lin Ming
2008-03-12 3:58 ` Len Brown
0 siblings, 2 replies; 3+ messages in thread
From: Thomas Renninger @ 2008-03-06 22:33 UTC (permalink / raw)
To: ming.m.lin; +Cc: rui.zhang, linux-acpi
Warn if packages with invalid references are evaluated
And return an error to avoid NULL pointer access.
Lin Ming's patch avoids corrupted mem access when
BIOS has invalid references included, the handle is now zero
instead of corrupted.
Signed-off-by: Thomas Renninger <trenn@suse.de>
---
Index: linux-2.6.24/drivers/acpi/utils.c
===================================================================
--- linux-2.6.24.orig/drivers/acpi/utils.c
+++ linux-2.6.24/drivers/acpi/utils.c
@@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle hand
break;
}
+ if (!element->reference.handle) {
+ printk(KERN_WARNING PREFIX "Invalid reference in"
+ " package %s\n", pathname);
+ status = AE_NULL_ENTRY;
+ break;
+ }
/* Get the acpi_handle. */
list->handles[i] = element->reference.handle;
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] Warn if packages with invalid references are evaluated
2008-03-06 22:33 [PATCH] Warn if packages with invalid references are evaluated Thomas Renninger
@ 2008-03-07 1:33 ` Lin Ming
2008-03-12 3:58 ` Len Brown
1 sibling, 0 replies; 3+ messages in thread
From: Lin Ming @ 2008-03-07 1:33 UTC (permalink / raw)
To: trenn; +Cc: rui.zhang, linux-acpi
On Thu, 2008-03-06 at 23:33 +0100, Thomas Renninger wrote:
> Warn if packages with invalid references are evaluated
>
> And return an error to avoid NULL pointer access.
> Lin Ming's patch avoids corrupted mem access when
> BIOS has invalid references included, the handle is now zero
> instead of corrupted.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Thanks,
Lin Ming
>
>
> Signed-off-by: Thomas Renninger <trenn@suse.de>
>
> ---
> Index: linux-2.6.24/drivers/acpi/utils.c
> ===================================================================
> --- linux-2.6.24.orig/drivers/acpi/utils.c
> +++ linux-2.6.24/drivers/acpi/utils.c
> @@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle hand
> break;
> }
>
> + if (!element->reference.handle) {
> + printk(KERN_WARNING PREFIX "Invalid reference in"
> + " package %s\n", pathname);
> + status = AE_NULL_ENTRY;
> + break;
> + }
> /* Get the acpi_handle. */
>
> list->handles[i] = element->reference.handle;
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] Warn if packages with invalid references are evaluated
2008-03-06 22:33 [PATCH] Warn if packages with invalid references are evaluated Thomas Renninger
2008-03-07 1:33 ` Lin Ming
@ 2008-03-12 3:58 ` Len Brown
1 sibling, 0 replies; 3+ messages in thread
From: Len Brown @ 2008-03-12 3:58 UTC (permalink / raw)
To: trenn; +Cc: ming.m.lin, rui.zhang, linux-acpi
applied.
thanks,
-len
On Thursday 06 March 2008, Thomas Renninger wrote:
> Warn if packages with invalid references are evaluated
>
> And return an error to avoid NULL pointer access.
> Lin Ming's patch avoids corrupted mem access when
> BIOS has invalid references included, the handle is now zero
> instead of corrupted.
>
>
> Signed-off-by: Thomas Renninger <trenn@suse.de>
>
> ---
> Index: linux-2.6.24/drivers/acpi/utils.c
> ===================================================================
> --- linux-2.6.24.orig/drivers/acpi/utils.c
> +++ linux-2.6.24/drivers/acpi/utils.c
> @@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle hand
> break;
> }
>
> + if (!element->reference.handle) {
> + printk(KERN_WARNING PREFIX "Invalid reference in"
> + " package %s\n", pathname);
> + status = AE_NULL_ENTRY;
> + break;
> + }
> /* Get the acpi_handle. */
>
> list->handles[i] = element->reference.handle;
>
>
> --
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>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2008-03-06 22:33 [PATCH] Warn if packages with invalid references are evaluated Thomas Renninger
2008-03-07 1:33 ` Lin Ming
2008-03-12 3:58 ` Len Brown
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