linux-kernel - Re: [PATCH 3/4] x86/resctrl: Fix a deadlock due to inaccurate active reference of kernfs node

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Message-ID: <9a9ab238-604c-0c1f-f168-dd27ba89e989@intel.com>
Date:   Tue, 14 Jan 2020 17:17:25 +0800
From:   Xiaochen Shen <xiaochen.shen@...el.com>
To:     Sasha Levin <sashal@...nel.org>, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, hpa@...or.com
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, pei.p.jia@...el.com,
        stable@...r.kernel.org, Xiaochen Shen <xiaochen.shen@...el.com>
Subject: Re: [PATCH 3/4] x86/resctrl: Fix a deadlock due to inaccurate active
 reference of kernfs node

Hi Sasha,

The backporting for v4.14.x stable tree needs some manual tweaking due to
difference code bases:
1. x86/resctrl rename/re-arrange in v5.0 upstream kernel.
2. Code change in upstream commit cfd0f34e4cd5 ("x86/intel_rdt: Add
diagnostics when making directories").

The backporting for v4.19.x stable tree needs some manual tweaking due to
difference code bases: x86/resctrl rename/re-arrange in v5.0 upstream
kernel.

I will work on the backporting once this patch is merged into upstream.

Thank you.

On 1/9/2020 22:36, Sasha Levin wrote:
> Hi,
> 
> [This is an automated email]
> 
> This commit has been processed because it contains a "Fixes:" tag,
> fixing commit: c7d9aac61311 ("x86/intel_rdt/cqm: Add mkdir support for RDT monitoring").
> 
> The bot has tested the following trees: v5.4.8, v4.19.93, v4.14.162.
> 
> v5.4.8: Build OK!
> v4.19.93: Failed to apply! Possible dependencies:
>      Unable to calculate
> 
> v4.14.162: Failed to apply! Possible dependencies:
>      cfd0f34e4cd5 ("x86/intel_rdt: Add diagnostics when making directories")
> 
> 
> NOTE: The patch will not be queued to stable trees until it is upstream.
> 
> How should we proceed with this patch?
> 

-- 
Best regards,
Xiaochen