linux-kernel - Re: PROBLEM: mce: [Hardware Error] from dmesg -l emerg

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Message-ID: <20180514165042.GA2746@agluck-desk>
Date:   Mon, 14 May 2018 09:50:43 -0700
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Jeffrin Thalakkottoor <jeffrin@...agiritech.edu.in>,
        Thomas Gleixner <tglx@...utronix.de>, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org, linux-edac@...r.kernel.org,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: PROBLEM: mce: [Hardware Error] from dmesg -l emerg

On Mon, May 14, 2018 at 06:27:52PM +0200, Borislav Petkov wrote:
> On Mon, May 14, 2018 at 09:19:11PM +0530, Jeffrin Thalakkottoor wrote:
> > hello,
> > 
> > output related of  "sudo dmesg -l emerg" from my laptop...
> > 
> > --------------------------------------------------------------------------------------------------->
> > $sudo dmesg -l emerg
> > [sudo] password for jeffrin:
> > [    0.041023] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 5:
> > ee0000000040110b
> > [    0.041028] mce: [Hardware Error]: TSC 0 ADDR 160000080 MISC 5040008086
> > [    0.041034] mce: [Hardware Error]: PROCESSOR 0:306d4 TIME
> > 1526300792 SOCKET 0 APIC 0 microcode 2a
> 
> Run it through mcelog to see what it decodes to:
> 
> dmesg | mcelog --ascii

Is the system crashing? Or do you just see this message but
no other bad effects?

Does is happen every boot? Or was this a one time message?

Can you grab some context lines from dmesg (say 40 lines
leading up to this message) to see what else was going on?

-Tony