linux-kernel - Re: [Patch v2 09/22] ACPI: Fix a bug in parsing ACPI Memroy24 resource

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150128231504.GC17623@google.com>
Date:	Wed, 28 Jan 2015 17:15:04 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>, Lv Zheng <lv.zheng@...el.com>,
	Len Brown <lenb@...nel.org>, Tony Luck <tony.luck@...el.com>,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [Patch v2 09/22] ACPI: Fix a bug in parsing ACPI Memroy24
 resource

"Memory24", not "Memroy24", in subject.

On Wed, Jan 28, 2015 at 06:57:27PM +0800, Jiang Liu wrote:
> According to ACPI spec 5, section 6.4.3.1 "24-Bit Memory Range Descriptor",
> minimum, maximum and address_length field in struct acpi_resource_memory24
> is in granularity of 256-bytes. So shift 8-bit left to get correct address.
> 
> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
> ---
>  drivers/acpi/resource.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
> index 7ce00a63f695..5544c6d26f32 100644
> --- a/drivers/acpi/resource.c
> +++ b/drivers/acpi/resource.c
> @@ -90,8 +90,8 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
>  	switch (ares->type) {
>  	case ACPI_RESOURCE_TYPE_MEMORY24:
>  		memory24 = &ares->data.memory24;
> -		acpi_dev_get_memresource(res, memory24->minimum,
> -					 memory24->address_length,
> +		acpi_dev_get_memresource(res, memory24->minimum << 8,
> +					 memory24->address_length << 8,
>  					 memory24->write_protect);
>  		break;
>  	case ACPI_RESOURCE_TYPE_MEMORY32:
> -- 
> 1.7.10.4
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/