Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp9686648imu; Wed, 5 Dec 2018 08:41:16 -0800 (PST) X-Google-Smtp-Source: AFSGD/VE1r6mQis0B7nGUy1l4/9SUXagfuOEJIGob5TSANXGo+jV5yxA6pgraxHNuAitKTK1FSYH X-Received: by 2002:a17:902:bc81:: with SMTP id bb1mr24268507plb.223.1544028076353; Wed, 05 Dec 2018 08:41:16 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1544028076; cv=none; d=google.com; s=arc-20160816; b=c2OZR0cuy0KTngxsPuVIJsT+HP7kmhqDd98/jn7D2GW26keguHKezzPVuuWpfx7CHj /X4tbn/Ljbjud+cKWrdY8fq5yiynlOVfXstCqOdMItDC3FBh/vl26YGMexs2oAcwbLw7 F5Yh1gvPr6jZ+reG4sf1DCzsPajK7ahNnhWBdwqhjIdzZnP0zlgwmMOt8WT4jOgZPg35 dylkXzrEyaWyZCQVajApdZB6ClWw3ehx1IxbU+72ph+SBhKPMeoxCkG1aBRnguvwYXD1 xSpwrJ1jRp0iUjEcPFIzF7XX2C/J/PsND7zcJvzRMoyV9jOskP6a+D2zGo3sgqycAEpR VzAA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=wgU/0n/Ux88oL/R3zHfrpkuLNW2f0iE5GkOVXsanKXU=; b=yhhQQmliKfU19BpmPJYixPh5GZw0FIeOwKHz4GURLaFTlMRoC1yrcYwfvIPxqeXrFP EC3XbcW9UcXhT5Ptvv4SmEIFzVelPiDU7wq0bZdNQAJP/ablo/Cj+9WRdTflPtB8h4UN lM2Pb+LzcEzfYJdnC+6ZJWEwFI4duWjvlxNqfKcxneCxLwNZxR3F3C99M2XtO+2P8WAU hDCmO5XUsYw4wUlRy/AmEQkCUCw9ZJPFSmPjkqdt2fMLjDOM9yutmR8YzihFqlVcLENv BaX8BRHh0azZ1qjE0B/fV2IwLwkTm7OIkQjHS2c0LaNms2Dfyq5Kd7ht3+SYICFq1Rpo Q25Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id y20si20626741plp.415.2018.12.05.08.41.01; Wed, 05 Dec 2018 08:41:16 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728039AbeLEQin (ORCPT + 99 others); Wed, 5 Dec 2018 11:38:43 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44780 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727660AbeLEQim (ORCPT ); Wed, 5 Dec 2018 11:38:42 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D2D3437E8E; Wed, 5 Dec 2018 16:38:41 +0000 (UTC) Received: from krava (unknown [10.43.17.30]) by smtp.corp.redhat.com (Postfix) with SMTP id B2CCA60E3F; Wed, 5 Dec 2018 16:38:39 +0000 (UTC) Date: Wed, 5 Dec 2018 17:38:38 +0100 From: Jiri Olsa To: Vince Weaver Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Namhyung Kim Subject: Re: perf: perf_fuzzer triggers GPF in perf_prepare_sample Message-ID: <20181205163838.GA3836@krava> References: <20181205124538.GA19343@krava> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181205124538.GA19343@krava> User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Wed, 05 Dec 2018 16:38:42 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 05, 2018 at 01:45:38PM +0100, Jiri Olsa wrote: > On Tue, Dec 04, 2018 at 10:54:55AM -0500, Vince Weaver wrote: > > Hello, > > > > I was able to trigger another oops with the perf_fuzzer with current git. > > > > This is 4.20-rc5 after the fix for the very similar oops I previously > > reported got committed. > > > > It seems to be pointing to the same location in the source as > > before, I guess maybe triggered a different way? > > nice.. yep, looks the same > > > > > Unfortunately this crash is not easily reproducible like the last one was. > > will check what model are hitting this on? jirka