linux-kernel - Re: [PATCH 1/2] perf report: ensure the perf DSO mapping matches what libdw sees

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Message-ID: <20170615203824.GA5513@host1.jankratochvil.net>
Date:   Thu, 15 Jun 2017 22:38:24 +0200
From:   Jan Kratochvil <jan.kratochvil@...hat.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Milian Wolff <milian.wolff@...b.com>, Linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 1/2] perf report: ensure the perf DSO mapping matches
 what libdw sees

On Mon, 05 Jun 2017 12:41:30 +0200, Jiri Olsa wrote:
> On Fri, Jun 02, 2017 at 04:37:52PM +0200, Milian Wolff wrote:
> > Debug output showed me that libdw found a module for the last frame
> > address, but it thinks it belongs to /usr/lib/ld-2.25.so.

I find your patch as a correct workaround of an elfutils bug.
I have filed it as:
	dwfl_addrmodule reports bogus modules for unmapped areas
	https://sourceware.org/bugzilla/show_bug.cgi?id=21602


Thanks,
Jan