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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 378A0C04EB9 for ; Wed, 5 Dec 2018 16:38:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F022520850 for ; Wed, 5 Dec 2018 16:38:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F022520850 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728051AbeLEQin (ORCPT ); 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