From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22173 invoked by alias); 22 Dec 2005 03:07:06 -0000 Received: (qmail 21921 invoked by uid 22791); 22 Dec 2005 03:07:04 -0000 X-Spam-Status: No, hits=0.8 required=5.0 tests=AWL,BAYES_50,DNS_FROM_RFC_ABUSE,HOT_NASTY,SPF_PASS X-Spam-Check-By: sourceware.org Received: from ausmtp03.au.ibm.com (HELO ausmtp03.au.ibm.com) (202.81.18.151) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 22 Dec 2005 03:07:02 +0000 Received: from sd0112e0.au.ibm.com (d23rh903.au.ibm.com [202.81.18.201]) by ausmtp03.au.ibm.com (8.12.10/8.12.10) with ESMTP id jBM3A9Hd095396 for ; Thu, 22 Dec 2005 14:10:09 +1100 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.250.243]) by sd0112e0.au.ibm.com (8.12.10/NCO/VERS6.8) with ESMTP id jBM39veK172542 for ; Thu, 22 Dec 2005 14:09:58 +1100 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.12.11/8.13.3) with ESMTP id jBM36sKL032008 for ; Thu, 22 Dec 2005 14:06:54 +1100 Received: from IBM528414E28E4 (IBM-528414E28E4.cn.ibm.com [9.181.135.180]) by d23av02.au.ibm.com (8.12.11/8.12.11) with SMTP id jBM36iQr031660; Thu, 22 Dec 2005 14:06:51 +1100 Message-ID: <00a301c606a4$bf56ae50$b487b509@IBM528414E28E4> From: "Gui,Jian" To: "jkenisto at us dot ibm dot com" Cc: References: <20051222024233.2091.jkenisto@us.ibm.com> Subject: Re: [Bug kprobes/2091] New: system crash when running "./systemtap.stress/current.stp" on power Date: Thu, 22 Dec 2005 03:07:00 -0000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="ISO-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2005-q4/txt/msg00536.txt.bz2 >> My suggestions for diagnosing this bug include: > 1. Try the same thing without the entry probes. > 2. Try the same thing without the return probes. > 3. Run "stap -p3 xxx.stp > xxx.c" and extract the list of kretprobe > probe > addresses (dwarf_kprobe_1[]?). Build a C module that establishes > entry kprobes > and/or return probes for all these functions. See if that crashes. > If so, keep > removing functions from the list until you get a module that doesn't > cause a > crash. Keep playing with the list until you figure out a minimal > list to > demonstrate the bug. Thanks for your suggestions. I've tried 1 and 2, and no crashes. I'll try 3 to minimize the list.