linux-kernel - Re: [PATCH -tip 0/8] perf-probe updates

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 11 Dec 2009 18:51:41 -0200
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Jim Keniston <jkenisto@...ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Jason Baron <jbaron@...hat.com>,
	"K.Prasad" <prasad@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip 0/8] perf-probe updates

Em Wed, Dec 09, 2009 at 04:41:39PM -0500, Masami Hiramatsu escreveu:
> Masami Hiramatsu wrote:
> >> Here the failure was because the symbol does not exist.
> > 
> > Yeah, so that's what I'm expecting to be implemented with below item :-)
> > 
> >    - Symbol search by libelf/kallsyms
> > 
> > I guess it will be done by using symbol.c.
> > (Actually, current
> 
> Oops, I might miss something, forgot it.
> actually, current perf probe doesn't decode kallsyms/elf, it just depends on
> kprobe-tracer. And kprobe-tracer will return -EINVAL not only if the symbol
> was not found, but also other reasons.
> 
> So, if we want to show below message, we need to decode elf or kallsyms.

Should be easy now with my latest patch :-)
 
> > >
> > > There's similar problems in most other failure cases. Trying to remove a
> > > non-existent probe gives:
> > >
> > >   # perf probe -d test
> > >   Warning: event "probe:test" is not found.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/