From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9292 invoked by alias); 7 Feb 2008 18:11:31 -0000 Received: (qmail 9285 invoked by uid 22791); 7 Feb 2008 18:11:31 -0000 X-Spam-Status: No, hits=0.2 required=5.0 tests=AWL,BAYES_00,ROUND_THE_WORLD_LOCAL X-Spam-Check-By: sourceware.org Received: from kbspmxp4.starhub.net.sg (HELO kbspmxp1.starhub.net.sg) (203.116.61.214) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 07 Feb 2008 18:11:07 +0000 Received: from kbsmtao2.starhub.net.sg (kbsmtao2.starhub.net.sg [203.116.2.167]) by kbspmxp1.starhub.net.sg (8.13.7+Sun/8.13.7) with ESMTP id m17I3xG7005921 for ; Fri, 8 Feb 2008 02:04:00 +0800 (SGT) Received: from kerndev.usersys.redhat.com ([202.156.145.135]) by kbsmtao2.starhub.net.sg (Sun Java System Messaging Server 6.2-9.07 (built Oct 18 2007)) with ESMTPP id <0JVV00HK1RUFP0B0@kbsmtao2.starhub.net.sg> for systemtap@sources.redhat.com; Fri, 08 Feb 2008 02:11:03 +0800 (SGT) Received: by kerndev.usersys.redhat.com (Postfix, from userid 500) id 036B2147802C; Fri, 08 Feb 2008 02:11:02 +0800 (SGT) Date: Thu, 07 Feb 2008 18:11:00 -0000 From: Eugene Teo Subject: Re: [RFC] SystemTap FAQ In-reply-to: <20080207180436.GB7906@kernel.sg> To: Srinivasa Ds Cc: "systemtap@sources.redhat.com" Reply-to: Eugene Teo Message-id: <20080207181101.GA8627@kernel.sg> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-disposition: inline References: <47AB2693.8040601@in.ibm.com> <20080207180436.GB7906@kernel.sg> User-Agent: Mutt/1.5.16 (2007-06-09) X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2008-q1/txt/msg00238.txt.bz2 > > 1) I have installed SystemTap but am getting a "semantic error: libdwfl > > failure (missing kernel debuginfo): No such file or directory", when I > > try to run a script. What am I missing? How do I fix it? > > There was a problem processing the debugging information. It may simply > be missing, or may have some consistency / correctness problems. Later > compilers tend to produce better debugging information, so if you can > upgrade and recompile your kernel/application, it may help. > > Ref: http://sources.redhat.com/systemtap/tutorial/node27.html On RHEL/Fedora, it is missing the kernel-debuginfo rpm. For RHEL, you can find the rpm at: http://people.redhat.com/duffy/debuginfo. For Fedora, you can run: yum --enablerepo=fedora-debuginfo install kernel-debuginfo 17) How can I find a list of blacklisted functions? You can run: stap -vvv -e 'probe kernel.function("*") {}' -p4 2>&1 | grep blacklisted Eugene