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=-5.2 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 55556C4332D for ; Wed, 3 Mar 2021 23:06:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B5D264F10 for ; Wed, 3 Mar 2021 23:06:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1391952AbhCCW66 (ORCPT ); Wed, 3 Mar 2021 17:58:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:47920 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1388047AbhCCUiX (ORCPT ); Wed, 3 Mar 2021 15:38:23 -0500 Received: from gandalf.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 8217564E90; Wed, 3 Mar 2021 20:37:42 +0000 (UTC) Date: Wed, 3 Mar 2021 15:37:40 -0500 From: Steven Rostedt To: "Daniel Xu" Cc: "Masami Hiramatsu" , linux-kernel@vger.kernel.org, "bpf@vger.kernel.org" , kuba@kernel.org Subject: Re: Broken kretprobe stack traces Message-ID: <20210303153740.4c0cc0c5@gandalf.local.home> In-Reply-To: <4d68e8d9-38b0-4f32-90b6-1639558fce51@www.fastmail.com> References: <1fed0793-391c-4c68-8d19-6dcd9017271d@www.fastmail.com> <20210303134828.39922eb167524bc7206c7880@kernel.org> <20210303092604.59aea82c@gandalf.local.home> <20210303195812.scqvwddmi4vhgii5@maharaja.localdomain> <4d68e8d9-38b0-4f32-90b6-1639558fce51@www.fastmail.com> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; 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: bpf@vger.kernel.org On Wed, 03 Mar 2021 12:13:08 -0800 "Daniel Xu" wrote: > On Wed, Mar 3, 2021, at 11:58 AM, Daniel Xu wrote: > > On Wed, Mar 03, 2021 at 09:26:04AM -0500, Steven Rostedt wrote: > > > On Wed, 3 Mar 2021 13:48:28 +0900 > > > Masami Hiramatsu wrote: > > > > > > > > > > > > > > > > > I think (can't prove) this used to work: > > > > > > Would be good to find out if it did. > > > > I'm installing some older kernels now to check. Will report back. > > Yep, works in 4.11. So there was a regression somewhere. Care to bisect? ;-) -- Steve