Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp297785pxk; Wed, 23 Sep 2020 03:35:56 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw7irFU9dGsquJwb2leJEQDEJE0OUeraUcrCY3WOtFbwX4Xwy7KRd06xCwenNITea5XRwMD X-Received: by 2002:a17:906:6a54:: with SMTP id n20mr9822014ejs.401.1600857356733; Wed, 23 Sep 2020 03:35:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1600857356; cv=none; d=google.com; s=arc-20160816; b=c/Pjjzf3j4pIHqHbFALBfMVR2vKqgFbGShplUApRw37qG4hfxlxbJLCYcdNoD33Xn7 ZVCyQp8DmLte0xhIw5ldBV7tRw7nT8LiwVO+/CCe5rS8rIrXG0rwYw1lzLsRLYYME1M5 lBfoQ4bg6LBpR9tsXbAmVIOSi5e4qGmbAJkYJOeFozrMnHHb6Pm2AbIhBqHXZtL0NkD7 mgynBA+EWeuUcgbecdxEZKjjLk0614SuZSKKiEh8y5fVwDAuGYEXuWWMRj9wRduvviTx Z2W+JLnxYCCRO/CirHgKZdBEFhwlfucxaXpGnPE7fEdT5aJUV+azQziE6BrAOr8qwoac KetQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=FZsrac/HmInXoXIXxRGxQJzsoj2KcH5XhZgh7SJHhMg=; b=om07f474IjNOO395w/8mgDlW6MMGzkKpiFVQsHu6U2eToWtzTWBN6h098Cp+Mu1xsR aoUfK/wuaaay9Qi7d5tN7fAzBxJHvfQUfX8e6/CIN2Z0BhF3Y/DhVwfatuEJevpYgbbi g8F9iOBWvmeAoBee8ZWxGgdms6oX0ICtZvmiwAL95PI5BsrqtBXt84WgIJnj4vi9qpYw VLfXqHXkuK0YJmAoTboDaUhK3Ehloy1n7cmSZqWQt9CFZcfYvIAj/5JL2H+TO2xXWcSn zR46+CARJApdLg80+d2RrfYOde7b8qEkByRIibaIaVaWvmb5ELjVuqJj4AEfSQ5m0zRV uG4g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=FC1HJZM5; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id t5si13792362edi.523.2020.09.23.03.35.33; Wed, 23 Sep 2020 03:35:56 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=FC1HJZM5; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726518AbgIWKef (ORCPT + 99 others); Wed, 23 Sep 2020 06:34:35 -0400 Received: from mail.skyhub.de ([5.9.137.197]:59630 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726332AbgIWKef (ORCPT ); Wed, 23 Sep 2020 06:34:35 -0400 Received: from zn.tnic (p200300ec2f0d1300e5068c8a3292d31d.dip0.t-ipconnect.de [IPv6:2003:ec:2f0d:1300:e506:8c8a:3292:d31d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id B67AE1EC0409; Wed, 23 Sep 2020 12:34:33 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1600857273; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=FZsrac/HmInXoXIXxRGxQJzsoj2KcH5XhZgh7SJHhMg=; b=FC1HJZM5zluJYAblwWMILTtAWbJarN/DVYpUvGXnhxCpMkNmE+o84Df1/dAjtgzJJILLfQ QVm6ycc1b3BM9WAQc9n6/xGnwiIM9efk6Y2W2XvyarhYw25/ti6xrYaX32Ok25RVy/0daL csbcbDCyozkIPUz0gzZXr+euC2nY3vw= Date: Wed, 23 Sep 2020 12:34:31 +0200 From: Borislav Petkov To: Dmitry Vyukov Cc: Nick Desaulniers , Josh Poimboeuf , syzbot , Arnaldo Carvalho de Melo , Alexander Shishkin , "H. Peter Anvin" , Jiri Olsa , LKML , Mark Rutland , Ingo Molnar , Namhyung Kim , Peter Zijlstra , syzkaller-bugs , Thomas Gleixner , the arch/x86 maintainers , clang-built-linux Subject: Re: general protection fault in perf_misc_flags Message-ID: <20200923103431.GF28545@zn.tnic> References: <00000000000052569205afa67426@google.com> <20200919110831.GD7462@zn.tnic> <20200921221336.GN5901@zn.tnic> <20200923090336.GD28545@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 23, 2020 at 11:24:48AM +0200, Dmitry Vyukov wrote: > 3. Run syzkaller locally with custom patches. Let's say I wanna build the kernel with clang-10 using your .config and run it in a vm locally. What are the steps in order to reproduce the same workload syzkaller runs in the guest on the GCE so that I can at least try get as close as possible to reproducing locally? Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette