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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 13D4CC43381 for ; Tue, 26 Feb 2019 14:20:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CF458217F5 for ; Tue, 26 Feb 2019 14:20:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="g5aLtBwX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727131AbfBZOUZ (ORCPT ); Tue, 26 Feb 2019 09:20:25 -0500 Received: from mail-qk1-f195.google.com ([209.85.222.195]:37249 "EHLO mail-qk1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726475AbfBZOUY (ORCPT ); Tue, 26 Feb 2019 09:20:24 -0500 Received: by mail-qk1-f195.google.com with SMTP id m9so7640535qkl.4 for ; Tue, 26 Feb 2019 06:20:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=O2h1MY/nFFbkrutD6v76WKjrrVDrEVfs31jKmeZT7tw=; b=g5aLtBwXLqGbGf7eXrnKj5aWnCFTvV2L53xKP3dpsTwL5hJrNiXy9YKyWO1wFxB9Tf E/Vz70UAvOwKELL5ZxXl5yHcq9GJGm4OrZ7+DqPYvgB14tMrE7vz6oNdXDlI/HdXUSoy /P7Xb2Vicvkcd6xHGHHL0oEadt+nBmUMErhRYuk/n7QTgI5T+aaRK2c/DgNDdX2NQ8uh QB8iT9r60nFQjiKVhynl/k6jC3eapW7cvjuPaNlws5RAGkllhoAIJfIn7Ws9wPpCMIbC 6eFkaV8oNxmaZ6uRWdPU0er8012pcGZUqBdS9NnfwGCYil/DzE6aaupEgucwP1MTYvqG bbwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=O2h1MY/nFFbkrutD6v76WKjrrVDrEVfs31jKmeZT7tw=; b=PM2vxlt7AcN78NBedQ/n09UTuKParO5VeZUVNvTFQZ2COJnooqCtCFk3ga8IzLgKsc yDV+X9pad4dfORisShz/4o1MOEPzn4W+tZ/zpC+lSwbzTH/qSSxWPgl4pNRxlF6MK+Ji fwBLrtdhIzhsryFRDjkOtlat9KYTX2rTwwdNuyyA7JfSR14vJkXEzD+8RnbqEPFfCfMl AtnxOS+qrTUQT8+lvPYLrFIcOx6vxdqeiqpHMzBqPMcmZVd3i+jbbqjC9uiq+osTc+Us OPQfeHQX+0F+XZarr6V+FENioA3ZrQwUzZn3LvWWYVMjSvSspL7OknFN6ezJINCnJulu 9lYw== X-Gm-Message-State: AHQUAub8Bpyk/0GpvyGlyUm/ZrSBe4ZENCtfMXaA6o9S71OHoOApkTmb h7VCPAwAoF4NDxii4f/5Lt0= X-Google-Smtp-Source: AHgI3IZE3xjOGV2w0Ce245ds/z0r47CjDVr+MoYZsmKjZGgFjABk3x14QQuud0p7p6Q8XIOmwHGT4w== X-Received: by 2002:a37:4fd5:: with SMTP id d204mr17266546qkb.90.1551190823406; Tue, 26 Feb 2019 06:20:23 -0800 (PST) Received: from quaco.ghostprotocols.net ([179.97.35.11]) by smtp.gmail.com with ESMTPSA id v18sm7003224qkj.13.2019.02.26.06.20.21 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 26 Feb 2019 06:20:22 -0800 (PST) From: Arnaldo Carvalho de Melo X-Google-Original-From: Arnaldo Carvalho de Melo Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 3353F41104; Tue, 26 Feb 2019 11:20:09 -0300 (-03) Date: Tue, 26 Feb 2019 11:20:09 -0300 To: Adrian Hunter , Alexander Shishkin Cc: Greg KH , Joseph Qi , "linux-kernel@vger.kernel.org" , luto@kernel.org, Jiufei Xue , Xu Yu , peterz@infradead.org, mingo@redhat.com Subject: Re: [bug report][stable] perf probe: failed to add events Message-ID: <20190226142009.GC26786@kernel.org> References: <1a4240a8-288b-45d0-073d-d5cb8f0c63eb@linux.alibaba.com> <20190226090505.GA24409@kroah.com> <20190226130802.GA10343@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190226130802.GA10343@kroah.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Tue, Feb 26, 2019 at 02:08:02PM +0100, Greg KH escreveu: > On Tue, Feb 26, 2019 at 08:32:34PM +0800, Joseph Qi wrote: > > > > > > On 19/2/26 17:05, Greg KH wrote: > > > On Tue, Feb 26, 2019 at 03:31:14PM +0800, Joseph Qi wrote: > > >> Hi, > > >> > > >> I'm using kernel v4.19.24 and have found that there is an issue when > > >> using perf probe to define a new dynamic tracepoint. > > >> > > >> $ perf probe -a handle_mm_fault > > >> Failed to write event: Numerical result out of range > > >> Error: Failed to add events. > > >> > > >> I've also tried kernel v4.20, and it can pass. > > > > > > Ick, has this ever worked on the 4.19 stable tree? If so, any chance > > > you can run 'git bisect' to find the offending commit? > > > > > >From my test, v4.19.0 also has this issue. > > Bisect locates that it is introduced by commit bf904d2762ee > > "x86/pti/64: Remove the SYSCALL64 entry trampoline". > > But that commit was in 4.20, not 4.19. So if this never worked, it's > not a regression? > > confused, Adrian, Ideas? - Arnaldo