Re: [PATCH] x86/mce: Fix initialization error warning

From: Prarit Bhargava
Date: Mon Jan 16 2017 - 17:07:49 EST




On 01/16/2017 04:56 PM, Borislav Petkov wrote:
> On Mon, Jan 16, 2017 at 04:49:41PM -0500, Prarit Bhargava wrote:
>> When booting kernel with mce=off a loud warning from the mce code
>> is displayed. This causes confusion for end users.
>
> Is this what you call a loud warning?
>
> [ 1.885648] mce: Unable to init device /dev/mcelog (rc: -5)

Yes, it was loud enough to generate a bug report from a user.

FWIW, I just found this from last year calling the same message "scary". It
doesn't look like there was a follow up though.

https://lkml.org/lkml/2016/2/9/354

P.

>