linux-kernel - Re: Regression: QCA6390 fails with "mm/page_alloc: place pages to tail in __free_pages

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Message-ID: <b9312d0b-1219-edda-0333-debb8e7b32e7@gmail.com>
Date:   Thu, 5 Nov 2020 10:47:49 +0100
From:   Pavel Procopiuc <pavel.procopiuc@...il.com>
To:     Kalle Valo <kvalo@...eaurora.org>, david@...hat.com
Cc:     ath11k@...ts.infradead.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        linux-wireless@...r.kernel.org
Subject: Re: Regression: QCA6390 fails with "mm/page_alloc: place pages to
 tail in __free_pages_core()"

Op 05.11.2020 om 10:04 schreef Kalle Valo:
> Oh, very interesting. Thanks a lot for the bisection, otherwise we would
> have never found out whats causing this.
> 
> David & mm folks: Pavel noticed that his QCA6390 Wi-Fi 6 device (driver
> ath11k) failed on v5.10-rc1. After bisecting he found that the commit
> below causes the regression. I have not been able to reproduce this and
> for me QCA6390 works fine. I don't know if this needs a specific kernel
> configuration or what's the difference between our setups.
> 
> Any ideas what might cause this and how to fix it?
> 
> Full discussion: http://lists.infradead.org/pipermail/ath11k/2020-November/000501.html
> 
> commit 7fef431be9c9ac255838a9578331567b9dba4477
> Author:     David Hildenbrand <david@...hat.com>
> AuthorDate: Thu Oct 15 20:09:35 2020 -0700
> Commit:     Linus Torvalds <torvalds@...ux-foundation.org>
> CommitDate: Fri Oct 16 11:11:18 2020 -0700
> 
>      mm/page_alloc: place pages to tail in __free_pages_core()

This is my kernel config, for the reference: https://gist.github.com/twistedfall/455885024c56587fc5a0f4b2784612e8