From: "Frank Ch. Eigler" <fche@redhat.com>
To: Jinhua Luo <luajit.io@gmail.com>
Cc: systemtap@sourceware.org
Subject: Re: [HELP] ubacktrace() problem
Date: Wed, 13 Jan 2016 15:23:00 -0000 [thread overview]
Message-ID: <20160113152312.GC7497@redhat.com> (raw)
In-Reply-To: <CAAc9rOxJNeVvyjeRX==GpNU9H=Sh+AfFUgLtLPqxFpWJnj_K3w@mail.gmail.com>
Hi -
> > % rpm -ql kernel-debuginfo | grep vdso
> > /usr/lib/debug/lib/modules/4.2.6-200.fc22.x86_64/vdso
> > [...]
> > These may be necessary to be able to unwind through the kernel-user
> > transition [...]
>
> Thanks for the information! The debian indeed lacks of vdso files in
> the kernel package.
Please let us know when/if a debian bug is opened, so we can track it.
> [...] I am still wondering if the warnings denotes that the
> collected backtraces are not so accurate and complete.
Well, they will be as accurate and complete as systemtap can make it,
with the imperfect data it is given. Use the warnings to help (us)
diagnose known problem cases, otherwise please don't worry about them.
- FChE
next prev parent reply other threads:[~2016-01-13 15:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-12 5:47 Jinhua Luo
2016-01-12 14:32 ` Frank Ch. Eigler
2016-01-13 8:19 ` Jinhua Luo
2016-01-13 15:23 ` Frank Ch. Eigler [this message]
2016-01-14 3:40 ` Jinhua Luo
2016-01-14 8:31 ` Mark Wielaard
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