From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756930AbbAHRUY (ORCPT ); Thu, 8 Jan 2015 12:20:24 -0500 Received: from smtprelay0133.hostedemail.com ([216.40.44.133]:60705 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756863AbbAHRUU (ORCPT ); Thu, 8 Jan 2015 12:20:20 -0500 X-Session-Marker: 6E657665747340676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::,RULES_HIT:41:355:379:541:973:988:989:1260:1277:1311:1313:1314:1345:1437:1515:1516:1518:1534:1539:1593:1594:1711:1730:1747:1777:1792:2393:2559:2562:2893:3138:3139:3140:3141:3142:3352:3622:3865:3867:3868:3871:3872:3873:3874:5007:6119:6261:7875:7903:10004:10400:10848:11232:11658:11914:12296:12517:12519:13069:13070:13071:13161:13229:13311:13357:14347:21060:21067:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: gate05_59ca99104f43d X-Filterd-Recvd-Size: 1290 Date: Thu, 8 Jan 2015 12:20:16 -0500 From: Steven Rostedt To: Masami Hiramatsu Cc: LKML , vvs@sw.ru Subject: Bug with jprobes and function graph tracer Message-ID: <20150108122016.0241f713@gandalf.local.home> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Masami, First, I would like to wish you a Happy New Year :-) OK, now back to business. It has come to my attention that jprobes and function graph tracing do not play nicely together. I think you once told me they have issues as well. A simple way to test this is to load the jprobe_example.ko module and then run function graph tracing. Should we try to fix this? Or should it just be that users need to know not to enable the two together. Or we can prevent one from starting if the other is being used. Looking forward to hearing your thoughts on the subject. -- Steve