From: Eugene Teo <eugeneteo@kernel.sg>
To: Srinivasa Ds <srinivasa@in.ibm.com>
Cc: "systemtap@sources.redhat.com" <systemtap@sources.redhat.com>
Subject: Re: [RFC] SystemTap FAQ
Date: Thu, 07 Feb 2008 18:11:00 -0000 [thread overview]
Message-ID: <20080207181101.GA8627@kernel.sg> (raw)
In-Reply-To: <20080207180436.GB7906@kernel.sg>
<quote sender="Eugene Teo">
> > 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
next prev parent reply other threads:[~2008-02-07 18:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-07 15:41 Srinivasa Ds
2008-02-07 18:05 ` Eugene Teo
2008-02-07 18:11 ` Eugene Teo [this message]
2008-02-18 12:26 ` Srinivasa Ds
2008-02-18 17:29 ` William Cohen
2008-02-19 12:58 ` Srinivasa Ds
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