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Subject: Re: [x86/hotplug] e1056a25da:
 WARNING:at_arch/x86/kernel/apic/apic.c:#setup_local_APIC
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>, tipbuild@zytor.com, lkp@01.org
References: <20190620021856.GP7221@shao2-debian>
 <alpine.DEB.2.21.1906212108150.5503@nanos.tec.linutronix.de>
From:   Rong Chen <rong.a.chen@intel.com>
Message-ID: <58ea508f-dc2e-8537-fe96-49cca0a7c799@intel.com>
Date:   Tue, 25 Jun 2019 09:46:01 +0800
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On 6/22/19 3:08 AM, Thomas Gleixner wrote:
> On Thu, 20 Jun 2019, kernel test robot wrote:
>
>> FYI, we noticed the following commit (built with gcc-7):
>>
>> commit: e1056a25daa6460c95e92d7d6853d05ad62458f7 ("x86/hotplug: Silence APIC and NMI when CPU is dead")
>> https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git WIP.x86/ipi
>>
>> in testcase: locktorture
>> with following parameters:
>>
>> 	runtime: 300s
>> 	test: cpuhotplug
>>
>> test-description: This torture test consists of creating a number of kernel threads which acquire the lock and hold it for specific amount of time, thus simulating different critical region behaviors.
>> test-url: https://www.kernel.org/doc/Documentation/locking/locktorture.txt
>>
>>
>> on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 2G
> I cannot reproduce that issue. What's the underlying hardware machine?

brand: Genuine Intel(R) CPU 000 @ 2.27GHz
model: Westmere-EX
memory: 256G
nr_node: 4
nr_cpu: 80

Best Regards,
Rong Chen


>
> Thanks,
>
> 	tglx