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[2a02:a44f:d2f0:0:7cde:5457:f7ce:ec3c]) by smtp.gmail.com with ESMTPSA id 22sm621952ejw.27.2020.11.05.01.47.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 Nov 2020 01:47:50 -0800 (PST) Subject: Re: Regression: QCA6390 fails with "mm/page_alloc: place pages to tail in __free_pages_core()" To: Kalle Valo , david@redhat.com Cc: ath11k@lists.infradead.org, linux-mm@kvack.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org References: <87lffjodu7.fsf@codeaurora.org> <87ft5rszcs.fsf@codeaurora.org> <87ft5qsem9.fsf@codeaurora.org> <87blgdscxd.fsf@codeaurora.org> <229c31e7-9aff-18e6-a6db-be7b46331173@gmail.com> <87361onphy.fsf_-_@codeaurora.org> From: Pavel Procopiuc Message-ID: Date: Thu, 5 Nov 2020 10:47:49 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <87361onphy.fsf_-_@codeaurora.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 > AuthorDate: Thu Oct 15 20:09:35 2020 -0700 > Commit: Linus Torvalds > 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