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_HELO_NONE,SPF_PASS,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 922FCC46478 for ; Thu, 4 Jul 2019 12:55:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7302F218A0 for ; Thu, 4 Jul 2019 12:55:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726791AbfGDMzh (ORCPT ); Thu, 4 Jul 2019 08:55:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:58178 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726614AbfGDMzh (ORCPT ); Thu, 4 Jul 2019 08:55:37 -0400 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 C8ED02189E; Thu, 4 Jul 2019 12:55:35 +0000 (UTC) Date: Thu, 4 Jul 2019 08:55:34 -0400 From: Steven Rostedt To: Naruto Nguyen Cc: linux-trace-devel@vger.kernel.org, linux-trace-users@vger.kernel.org Subject: Re: register_jprobe always fails with -22 Message-ID: <20190704085534.1c9c8a29@gandalf.local.home> In-Reply-To: References: 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 Sender: linux-trace-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-trace-users@vger.kernel.org On Thu, 4 Jul 2019 16:03:42 +0700 Naruto Nguyen wrote: > Hi everyone, > > I tried to write a sample jprobe as the link > https://bugzilla.redhat.com/show_bug.cgi?id=1275809 (the sample is > attached in the link). However the function register_jprobes always > return -22 or -2. Could you please let me know what these errors means > and how to fix it? > Note, jprobes have been removed from the kernel. They have been obsoleted by registering with the function tracer. See Documentation/trace/ftrace-uses.rst in the kernel source code. -- Steve