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Date: Mon, 1 Nov 2010 18:37:55 +0300
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Jan Kiszka <jan.kiszka@web.de>
Cc: Don Zickus <dzickus@redhat.com>, Ingo Molnar <mingo@elte.hu>,
        Peter Zijlstra <peterz@infradead.org>, Eric Paris <eparis@redhat.com>,
        Randy Dunlap <randy.dunlap@oracle.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: BUG: using smp_processor_id() in preemptible
	arch_trigger_all_cpu_backtrace_handler
Message-ID: <20101101153755.GB5985@lenovo>
References: <4CCEB51C.7010901@web.de>
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On Mon, Nov 01, 2010 at 01:39:56PM +0100, Jan Kiszka wrote:
> Hi,
> 
> I was getting this BUG while running into a GPF:
> 
> BUG: using smp_processor_id() in preemptible [00000000] code: qemu-system-x86/2248
> caller is arch_trigger_all_cpu_backtrace_handler+0x1d/0xf7
> Pid: 2248, comm: qemu-system-x86 Not tainted 2.6.36+ #12
> Call Trace:
> [<ffffffff81203194>] debug_smp_processor_id+0xd8/0xf4
> [<ffffffff813803ab>] arch_trigger_all_cpu_backtrace_handler+0x1d/0xf7
...

 Thanks for report Jan. I'll take a look as only get ability.

 Cyrill
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