linux-kernel - Re: [PATCH v2] perf test shell: Add -D to check dynamic symbols for ubuntu/debian

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Date:   Wed, 9 May 2018 16:41:08 -0500
From:   Kim Phillips <kim.phillips@....com>
To:     Li Zhijian <lizhijian@...fujitsu.com>
Cc:     <linux-kernel@...r.kernel.org>, <acme@...nel.org>,
        <peterz@...radead.org>, <mingo@...hat.com>,
        <alexander.shishkin@...ux.intel.com>, <jolsa@...hat.com>,
        <namhyung@...nel.org>, <philip.li@...el.com>,
        Thomas Richter <tmricht@...ux.vnet.ibm.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH v2] perf test shell: Add -D to check dynamic symbols for
 ubuntu/debian

On Wed, 9 May 2018 15:45:29 +0800
Li Zhijian <lizhijian@...fujitsu.com> wrote:

> On Ubuntu and Debian, we can't find any symbol including "inet_pton" from 'nm -g'
> root@...lkp-nex04-8G-5 ~# nm -g /lib/x86_64-linux-gnu/libc-2.25.so | grep inet_pton
> nm: /lib/x86_64-linux-gnu/libc-2.25.so: no symbols
> 
> it looks libc.so has different symbol compositions at different distros

I'm wondering if that is because libc6-dbg isn't installed?:

ubuntu$ nm -g /usr/lib/debug/lib/x86_64-linux-gnu/libc-2.26.so | grep inet_pton
0000000000136340 W inet_pton
0000000000136010 T __inet_pton_length

Kim