linux-kernel - Re: [PATCH 4.11 00/28] 4.11.1-stable review

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Date:   Mon, 15 May 2017 11:28:16 -0600
From:   Shuah Khan <shuahkh@....samsung.com>
To:     Matt Fleming <matt@...eblueprint.co.uk>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org, linux@...ck-us.net,
        patches@...nelci.org, ben.hutchings@...ethink.co.uk,
        stable@...r.kernel.org, Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        linux-efi@...r.kernel.org, Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH 4.11 00/28] 4.11.1-stable review

Hi Matt,

On 05/15/2017 08:36 AM, Matt Fleming wrote:
> On Fri, 12 May, at 10:01:41AM, Shuah Khan wrote:
>>
>> Greg/Matt,
>>
>> I started seeing this maybe since 4.11, so it isn't really a 4.11.1
>> issue, however sounds like this shouldn't be an error message, since
>> it is showing up on an older platform.
>>
>> efi: EFI_MEMMAP is not enabled.
>> efi: Failed to lookup EFI memory descriptor for 0x00000000d9e0f018
>>
>>
>> From 816e76129ed5fadd28e526c43397c79775194b5c Mon Sep 17 00:00:00 2001
>> From: Matt Fleming <matt@...eblueprint.co.uk>
>> Date: Mon, 29 Feb 2016 21:22:52 +0000
>> Subject: [PATCH] efi: Allow drivers to reserve boot services forever
>>
>> This change was introduced in Commit: 816e76129ed5fadd28e526c43397c79775194b5c
>>
>> Matt!
>>
>> Shouldn't this be a debug message?? Is this a really an error??
> 
> Yes, it's most likely an error. We shouldn't be trying to reserve
> EFI regions if we can't find them in the memory map.
> 
> Can you provide the full dmesg, please?
> 

Please see attached dmesg and dmidecode output. Please let me know if you need
any other information.

thanks,
-- Shuah


View attachment "dmesg_full" of type "text/plain" (215706 bytes)

View attachment "dmidecode.out" of type "text/plain" (21630 bytes)