linux-kernel - Re: [patch] generic-ipi: fix backtrace in smp_call_function

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Message-ID: <4B46B924.6070903@xenontk.org>
Date:	Fri, 08 Jan 2010 10:18:36 +0530
From:	David John <davidjon@...ontk.org>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch] generic-ipi: fix backtrace in smp_call_function_any()

On 01/08/2010 05:16 AM, Suresh Siddha wrote:
> On my westmere box, I see this backtrace with 2.6.33-rc kernels:
> 
>> cpumask_of_node(3): node > nr_node_ids(1)
>> Pid: 1, comm: swapper Not tainted 2.6.33-rc3-00097-g2c1f189 #223
>> Call Trace:
>>  [<ffffffff81028bb3>] cpumask_of_node+0x23/0x58
>>  [<ffffffff81061f51>] smp_call_function_any+0x65/0xfa
>>  [<ffffffff810160d1>] ? do_drv_read+0x0/0x2f
>>  [<ffffffff81015fba>] get_cur_val+0xb0/0x102
>>  [<ffffffff81016080>] get_cur_freq_on_cpu+0x74/0xc5
>>  [<ffffffff810168a7>] acpi_cpufreq_cpu_init+0x417/0x515
>>  [<ffffffff81562ce9>] ? __down_write+0xb/0xd
>>  [<ffffffff8148055e>] cpufreq_add_dev+0x278/0x922
> 
> fix it by using the cpu_to_node() and using the node number instead
> of the cpu for cpumask_of_node().
> 
> Signed-off-by: Suresh Siddha <suresh.b.siddha@...el.com>

Hi Suresh,

I have already sent a patch for this:
http://www.gossamer-threads.com/lists/linux/kernel/1173978?do=post_view_threaded

Can you ACK that instead?

Regards,
David.

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