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 6F646C00A89 for ; Mon, 2 Nov 2020 17:16:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3873C20657 for ; Mon, 2 Nov 2020 17:16:59 +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 S1727476AbgKBRQz (ORCPT ); Mon, 2 Nov 2020 12:16:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727346AbgKBRQx (ORCPT ); Mon, 2 Nov 2020 12:16:53 -0500 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A157C061A04 for ; Mon, 2 Nov 2020 09:16:47 -0800 (PST) Received: by mail-lf1-x132.google.com with SMTP id h6so18417645lfj.3 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=B+yc6mPeVWBlS4sUu2mU4U8YNdF9CkgG8Ja/o9s0CK725z/IbLPSkdpGLKPwL1LthZ BhveuF2z6NrzqKu9zyNUDgx4n8RMMRYx1K8dIptv7TghmWxT94SbpO1JzKK9kacqeGZd PxSN7l+c9Ys0+HxDWPzMhj0EM803G9OpHI4ZgvgjK8NVP7Enled+xvlr7f8MowQBOIOw sFtgms2SMifUgsdCxEd8x7hCdPh66f35SPMqOHjl1OeTxMMglnQEYStCblzBmt1/sSST Qng41/R8gHX2lhLRcLW/H9Rk0y2Y8IWjgDKvhFSFpUamTrfU7V/9SIWxHCKwiEpfRXsW xwsw== X-Gm-Message-State: AOAM533NNocs786TUO2iurbwU9KHxX3EaHVULowAr4J1pyBjTBcU4pnW jIopoyT5lnpfRnhP/yQ9WtIqU7xVLbx34udI 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-fsdevel@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