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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_2 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 E003DC4727C for ; Fri, 25 Sep 2020 14:59:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CBCE20715 for ; Fri, 25 Sep 2020 14:59:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729280AbgIYO71 (ORCPT ); Fri, 25 Sep 2020 10:59:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:42246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728731AbgIYO7S (ORCPT ); Fri, 25 Sep 2020 10:59:18 -0400 Received: from oasis.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5648C20715; Fri, 25 Sep 2020 14:59:16 +0000 (UTC) Date: Fri, 25 Sep 2020 10:59:14 -0400 From: Steven Rostedt To: Naresh Kamboju Cc: Greg Kroah-Hartman , Joel Fernandes , Peter Zijlstra , Namhyung Kim , LKML , linux- stable , Sasha Levin , Masami Hiramatsu , LTP List , lkft-triage@lists.linaro.org Subject: Re: [stable 4.19] [PANIC]: tracing: Centralize preemptirq tracepoints and unify their usage Message-ID: <20200925105914.7de88d27@oasis.local.home> In-Reply-To: <20200925105458.567d0bf4@oasis.local.home> References: <20180823023839.GA13343@shao2-debian> <20180828195347.GA228832@joelaf.mtv.corp.google.com> <20200925051518.GA605188@kroah.com> <20200925105458.567d0bf4@oasis.local.home> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 25 Sep 2020 10:54:58 -0400 Steven Rostedt wrote: > The crash looks like its cr3 related, which I believe Peter Zijlstra s/cr3/cr2/ -- Steve > did a restructuring of that code to not let it be an issue anymore. > I'll have to look deeper. The rework may be too intrusive to backport, > but we do have other work arounds for this issue if that would be > acceptable for backporting. >