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Thu, 05 Nov 2020 09:04:47 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 7F4DFC433C9; Thu, 5 Nov 2020 09:04:46 +0000 (UTC) Received: from potku.adurom.net (88-114-240-156.elisa-laajakaista.fi [88.114.240.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kvalo) by smtp.codeaurora.org (Postfix) with ESMTPSA id B0E23C433C6; Thu, 5 Nov 2020 09:04:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B0E23C433C6 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=kvalo@codeaurora.org From: Kalle Valo To: Pavel Procopiuc , 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 Subject: Regression: QCA6390 fails with "mm/page_alloc: place pages to tail in __free_pages_core()" References: <87lffjodu7.fsf@codeaurora.org> <87ft5rszcs.fsf@codeaurora.org> <87ft5qsem9.fsf@codeaurora.org> <87blgdscxd.fsf@codeaurora.org> <229c31e7-9aff-18e6-a6db-be7b46331173@gmail.com> Date: Thu, 05 Nov 2020 11:04:41 +0200 In-Reply-To: <229c31e7-9aff-18e6-a6db-be7b46331173@gmail.com> (Pavel Procopiuc's message of "Wed, 4 Nov 2020 23:15:05 +0100") Message-ID: <87361onphy.fsf_-_@codeaurora.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain 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: (changing the subject, adding more lists and people) Pavel Procopiuc writes: > Op 04.11.2020 om 10:12 schreef Kalle Valo: >> Yeah, it is unfortunately time consuming but it is the best way to get >> bottom of this. > > I have found the commit that breaks things for me, it's > 7fef431be9c9ac255838a9578331567b9dba4477 mm/page_alloc: place pages to > tail in __free_pages_core() > > I've reverted it on top of the 5.10-rc2 and ath11k driver loads fine > and I have wifi working. 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() -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches