From owner-freebsd-wireless@freebsd.org  Wed May 24 08:59:58 2017
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Subject: Re: Panic On Restarting netif
To: Pete Wright <pete@nomadlogic.org>,
 "freebsd-wireless@freebsd.org" <freebsd-wireless@FreeBSD.org>
References: <98a7a7a7-0227-385f-4cee-87f352490345@nomadlogic.org>
 <f23f784c-4bd7-89e8-6a9c-4538899de590@FreeBSD.org>
 <1f7f1692-12be-451e-d9f6-995a70476651@nomadlogic.org>
From: Andriy Gapon <avg@FreeBSD.org>
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Date: Wed, 24 May 2017 11:58:33 +0300
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On 23/05/2017 20:45, Pete Wright wrote:
> 
> 
> On 05/23/2017 10:42, Andriy Gapon wrote:
>> On 23/05/2017 20:28, Pete Wright wrote:
>>> MCA: Bank 6, Status 0xfe00000000801136
>>> MCA: Global Cap 0x0000000000000c08, Status 0x0000000000000005
>>> MCA: Vendor "GenuineIntel", ID 0x806e9, APIC ID 2
>>> MCA: CPU 2 UNCOR PCC OVER DCACHE L2 DRD error
>> This looks like an uncorrectable [hardware] error in the CPU2 L2 cache.
>> The CPU might have started dying.
>>
> 
> <cry> I hope that's not the case, this is a new Kabylake system :(

The hope could be that this was a one-time glitch (proverbial cosmic ray).
Machine Check Architecture is designed to report hardware problems.


-- 
Andriy Gapon