From: Len Brown <lenb@kernel.org>
To: trenn@suse.de
Cc: ming.m.lin@intel.com, rui.zhang@intel.com,
linux-acpi <linux-acpi@vger.kernel.org>
Subject: Re: [PATCH] Warn if packages with invalid references are evaluated
Date: Tue, 11 Mar 2008 23:58:17 -0400 [thread overview]
Message-ID: <200803112358.17466.lenb@kernel.org> (raw)
In-Reply-To: <1204842824.8741.6.camel@linux-2bdv.site>
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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>
prev parent reply other threads:[~2008-03-12 3:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
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 [this message]
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