From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2955AC433EF for ; Sun, 28 Nov 2021 16:58:09 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 648096B0075; Sun, 28 Nov 2021 11:57:58 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 5F7DA6B0078; Sun, 28 Nov 2021 11:57:58 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4994F6B007B; Sun, 28 Nov 2021 11:57:58 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0227.hostedemail.com [216.40.44.227]) by kanga.kvack.org (Postfix) with ESMTP id 366A26B0075 for ; Sun, 28 Nov 2021 11:57:58 -0500 (EST) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id E3EB91849A387 for ; Sun, 28 Nov 2021 16:57:47 +0000 (UTC) X-FDA: 78858945732.27.F2DA09B Received: from mail-ed1-f54.google.com (mail-ed1-f54.google.com [209.85.208.54]) by imf11.hostedemail.com (Postfix) with ESMTP id 8B1D6F0000BA for ; Sun, 28 Nov 2021 16:57:47 +0000 (UTC) Received: by mail-ed1-f54.google.com with SMTP id r11so61728718edd.9 for ; Sun, 28 Nov 2021 08:57:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=soleen.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=hygTGueH+TpsmNvqO/xI0PfLf0AbmwXxiFK2b43VdDA=; b=UC3FsnutK3c+2D72zzm1AYYxj1fsYRNidiiWn1BPas2Z8CsWVcGovs77qZ9RDeb3Bo 2pQU4sSsZuuinuAf+whfjK1op1tkF6DMX8/zuxLHxZNTsdQMMqe7+K1wUvZe5a4NacSr fpWT4KQcyi1PoXODnom+kdKZPxvyP3XIGcOIsQ29lhNNfjJ2FLNZBOwzkWtVAKzVQfAZ QMCJNaUHKmiN8Hh4X57gnsXaJaeqB5qfP2y+DwRYvxt2BsDgpcBBq+5oIiX02OMjK2HD h/6XigX4xY/Z/BvXhIdMnPfss2JewLXq1xd0Oke9X8byYPEogcLuibZzjXx2HRsJxyvp 5byg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=hygTGueH+TpsmNvqO/xI0PfLf0AbmwXxiFK2b43VdDA=; b=fWL02zbJQiNULetqQtSxQyFuBZpJr64NYv49emYvlTaXWoObJ6WghtgUxtwBYxhz56 qknX025uWwmTLqSh3zlRRnFiMrH3ddXznEYqCzldB0aVAm4br+l5c8dYq0W8gWeV8e6J 7WM9E4KeNs/vMRXsK31Sv4rclnjyaHpRahFxc6jT2iyIJxL8yWwlLLntSD/5LvAb4TZ8 9DSkWvwNFEuRrUdB8yEu9ODzPO9XL/ghdidKvYYkG316n0v5LhMeXHchpb7dcfWLjzzx 7FxYqu8DCCpjNBXNyavBRQ0Ag3sn7x/iVusl7dOAAc+G7uAiMNJUBBnyFLFeo27CeiyB q9zQ== X-Gm-Message-State: AOAM5334cobpLQx+qJo8j4omnCXb7F3c/7yHAuLDt5LdcOh/5qq2yhPQ JP5L5cr0f7PxLLqKe4v73CfXA1YEk/Be6BCXGnO6bg== X-Google-Smtp-Source: ABdhPJy270/OctF0embo/utcMpyGS+idrT99w1PP6Ttlhkvr7f8h2YIfCLyWiPBA/vd/opxEtFmZQxdXlVTeBMWcfFs= X-Received: by 2002:a17:907:94c7:: with SMTP id dn7mr9396435ejc.470.1638118666062; Sun, 28 Nov 2021 08:57:46 -0800 (PST) MIME-Version: 1.0 References: <20211123214814.3756047-1-pasha.tatashin@soleen.com> <20211123214814.3756047-3-pasha.tatashin@soleen.com> <6d82e674-76dc-f3b0-2e53-a92eeb249eff@gmail.com> <7d339956-27fb-4eb6-bd73-791807ddef56@gmail.com> <9e0014e8-e251-360c-ad82-334ad0f28303@gmail.com> In-Reply-To: <9e0014e8-e251-360c-ad82-334ad0f28303@gmail.com> From: Pasha Tatashin Date: Sun, 28 Nov 2021 11:57:10 -0500 Message-ID: Subject: Re: [PATCH 2/3] mm: page table check To: Fusion Future Cc: LKML , linux-mm , Linux Doc Mailing List , Andrew Morton , David Rientjes , Paul Turner , weixugc@google.com, Greg Thelen , Ingo Molnar , Jonathan Corbet , Will Deacon , Mike Rapoport , Kees Cook , Thomas Gleixner , Peter Zijlstra , masahiroy@kernel.org, Sami Tolvanen , Dave Hansen , "maintainer:X86 ARCHITECTURE" , frederic@kernel.org, "H. Peter Anvin" , "Aneesh Kumar K.V" Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: izsgyuoo3cotkjfuzgi5f169zyf9mu4k Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=soleen.com header.s=google header.b=UC3Fsnut; dmarc=none; spf=pass (imf11.hostedemail.com: domain of pasha.tatashin@soleen.com designates 209.85.208.54 as permitted sender) smtp.mailfrom=pasha.tatashin@soleen.com X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 8B1D6F0000BA X-HE-Tag: 1638118667-34432 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: On Sun, Nov 28, 2021 at 11:54 AM Fusion Future wrote: > > > So it could be when memory consumption is over a certain percent, the bug will be triggered. > > Bisected and at the commit "[04ce8955fbe4d84376b92b875c42942489fcf3c5] > mm: page table check", the system still doesn't encounter any freezes. > So it's not this commit that introduces the bug. Sorry for bothering. This commit by itself would not cause the freeze or BUG_ON(), but the next commit which enables it on x86 arch might. Pasha