[PATCH] acpica: Fix segfault when disassembling AML (LP: #1050475)

[Colin Ian King]

On 13/09/12 16:40, Colin King wrote:
> From: Colin Ian King <colin.king at canonical.com>
>
> Running fwts against a collection of test tables I found a segfault
> in source/components/disassembler/dmopcode.c:334, due to Tag being
> null. This patch is a fix from Robert Moore at Intel which will land
> in the September release of ACPICA/iASL.
>
> Signed-off-by: Colin Ian King <colin.king at canonical.com>
> ---
>   src/acpica/source/common/dmrestag.c |    5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/src/acpica/source/common/dmrestag.c b/src/acpica/source/common/dmrestag.c
> index 9afaad3..3097f15 100644
> --- a/src/acpica/source/common/dmrestag.c
> +++ b/src/acpica/source/common/dmrestag.c
> @@ -541,6 +541,11 @@ AcpiDmCheckResourceReference (
>       /* Get the Index term, must be an integer constant to convert */
>
>       IndexOp = BufferNameOp->Common.Next;
> +
> +    /* Major cheat: The Node field is also used for the Tag ptr. Clear it now */
> +
> +    IndexOp->Common.Node = NULL;
> +
>       OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode);
>       if (OpInfo->ObjectType != ACPI_TYPE_INTEGER)
>       {
>

Bah, forgot the second part, NACK from me. Will re-do. Doh.