linux-kernel - Re: [PATCH] ACPI: pass correct parameter to acpi_processor_ffh_cstate_probe

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Date:	Sun, 15 Mar 2009 22:59:19 -0400 (EDT)
From:	Len Brown <lenb@...nel.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Ingo Molnar <mingo@...e.hu>,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>,
	Len Brown <len.brown@...el.com>,
	Zhao Yakui <yakui.zhao@...el.com>
Subject: Re: [PATCH] ACPI: pass correct parameter to
 acpi_processor_ffh_cstate_probe_cpu()

On Thu, 12 Mar 2009, Wu Fengguang wrote:

> This fixes a NULL pointer dereference bug introduced by 6e911954cac.

What tree is this patch on top of?

thanks,
-Len Brown
Intel Open Source Technology Center

> Signed-off-by: Wu Fengguang <fengguang.wu@...el.com>
> ---
> diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
> index 6626e8c..b866b87 100644
> --- a/arch/x86/kernel/acpi/cstate.c
> +++ b/arch/x86/kernel/acpi/cstate.c
> @@ -137,7 +137,7 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
>  	/* Run acpi_processor_ffh_cstate_probe_cpu() on the target CPU */
>  
>  	retval = smp_call_function_single(cpu,
> -				acpi_processor_ffh_cstate_probe_cpu, cx, 1);
> +				acpi_processor_ffh_cstate_probe_cpu, &cxcc, 1);
>  	if (retval == 0) {
>  		retval = cxcc.retval;
>  		if (retval == 0) {
> --
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