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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5706EC388F2 for ; Mon, 2 Nov 2020 17:16:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F27AC22268 for ; Mon, 2 Nov 2020 17:16:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=jasiak-xyz.20150623.gappssmtp.com header.i=@jasiak-xyz.20150623.gappssmtp.com header.b="R0CuAkDl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727791AbgKBRQz (ORCPT ); Mon, 2 Nov 2020 12:16:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727785AbgKBRQx (ORCPT ); Mon, 2 Nov 2020 12:16:53 -0500 Received: from mail-lf1-x12c.google.com (mail-lf1-x12c.google.com [IPv6:2a00:1450:4864:20::12c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27864C0617A6 for ; Mon, 2 Nov 2020 09:16:47 -0800 (PST) Received: by mail-lf1-x12c.google.com with SMTP id j30so18427174lfp.4 for ; Mon, 02 Nov 2020 09:16:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jasiak-xyz.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=pOGkUpEQFpFLpHbYfDTTEGGqLarAut/n6gfwvOUJSSs=; b=R0CuAkDlRj/epsCtNDiO769hiBOguzKFe+DAO8MOds8DX2VlHRtmw3lNcLg1khZm/I 0OYbo3y1YmRr3DWOHUPC3VO+LKCpSBtIQlTsbOEbrbHUrT5frl/+Zjw/feqjxNer7C3j gEKmBWa6Jy/ij4WIWEoq1zfN//SoOc5iwURF5lCocD/B48nTK9DrbB+oyH65TnprnOZp bu4RtGxZCEFmKmTU2tgnCO8H2i/36mK2azwddE2iSqLZPM76RCO9wzIA6Pg2hLGPE5n2 kX2osXwsAr+x535KbmZvxFbCKo+oOdZF63FpJbChHcGjAjbbqzONAaQ46/zG9edbLLlR kshA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=pOGkUpEQFpFLpHbYfDTTEGGqLarAut/n6gfwvOUJSSs=; b=CnHGj4nLpGD53UJ9SNUuTZkL+RU54uB8fjoHVFNj6Be0IZntaF3GML4R1TyINIvjoO YpLab0QYeMIXMP+kexdD1y8qmBvYr3+8P60Owcj1G9Pvac3KzEC0kte0tjwi22AXhPMb O7i5Tg7H4SLRjo+Zcc+hw1OLoOMOufe5aILRYG/kHA+ByQGvmnGrj6ns1OKL33GVPmi6 oe35Ak5mkrJ6TOpUAchXVJbUVFUGMwMhq9J1U11QSYaY0nNM173odtTm/9Cde02OWfay QaZt2wgOs+1Q+btvzjlZDnonb7RZh+nlpkigEUPenUhGz1Fwvcocwih5Pja6v/4B/HRn qmCQ== X-Gm-Message-State: AOAM531+FAaoYjGYAeaS5X/AiW1t1gjy5LrGQ/yRJXWEFeGLy4Fnxjrl o/8igkDnRvMFgQW8hoTxVCE6ug== X-Google-Smtp-Source: ABdhPJzZWGAZNTQelf6KybogENzY/nGSEIm8ur8Obr1OHpGzBzHe9kVOd445QBOnfVWYevvhTxUksg== X-Received: by 2002:a19:c70f:: with SMTP id x15mr5758531lff.296.1604337405683; Mon, 02 Nov 2020 09:16:45 -0800 (PST) Received: from gmail.com (wireless-nat-78.ip4.greenlan.pl. [185.56.211.78]) by smtp.gmail.com with ESMTPSA id b18sm2485747lfp.89.2020.11.02.09.16.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Nov 2020 09:16:45 -0800 (PST) Date: Mon, 2 Nov 2020 18:16:43 +0100 From: =?utf-8?B?UGF3ZcWC?= Jasiak To: Jan Kara Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, x86@kernel.org, Thomas Gleixner , Brian Gerst , Andy Lutomirski Subject: Re: PROBLEM: fanotify_mark EFAULT on x86 Message-ID: <20201102171643.GA5870@gmail.com> References: <20201101212738.GA16924@gmail.com> <20201102122638.GB23988@quack2.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20201102122638.GB23988@quack2.suse.cz> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/11/20, Jan Kara wrote: > Strange. Thanks for report. Looks like some issue got created / exposed > somewhere between 5.5 and 5.9 (actually probably between 5.5 and 5.7 > because the Linaro report you mentioned [1] is from 5.7-rc6). There were > no changes in this area in fanotify, I think it must have been some x86 > change that triggered this. Hum, looking into x86 changelog in that time > range there was a series rewriting 32-bit ABI [2] that got merged into > 5.7-rc1. Can you perhaps check whether 5.6 is good and 5.7-rc1 is bad? 5.6 works. 5.7-rc1 doesn't work. -- Paweł Jasiak