linux-kernel - Re: [PATCH 2/2] perf:tools: figure out start address of kernel map from /proc/kallsyms

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] [day] [month] [year] [list]

Message-ID: <20101124151046.GC15875@ghostprotocols.net>
Date:	Wed, 24 Nov 2010 13:10:46 -0200
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	linux-kernel@...r.kernel.org, Ian Munsie <imunsie@....ibm.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Tom Zanussi <tzanussi@...il.com>
Subject: Re: [PATCH 2/2] perf:tools: figure out start address of kernel map
 from /proc/kallsyms

Em Wed, Nov 24, 2010 at 10:38:29PM +0800, Ming Lei escreveu:
> 2010/11/24 Arnaldo Carvalho de Melo <acme@...stprotocols.net>:
> > Can you please use kallsyms__parse()? Please take a look at
> > event__synthesize_kernel_mmap as it also uses it.
> 
> Good idea, but kallsyms__parse does not pass a parameter
> which indicates if it is a module or kernel symbol to process handler.
> 
> So could you agree on adding one parameter which indicates if
> the current symbol is module symbol to process handler?
> 
> If so, I can use kallsyms__parse.

It passes, for a line like:

ffffffffa00361ce t serio_raw_connect	[serio_raw]

The process callback will receive:

process_symbol(arg=callback arg,
               symbol_name="serio_raw_connect    [serio_raw]",
               symbol_type='T', start=0xffffffffa00361ce)

That is how we figure out if it is a module when splitting the kallsyms
into modules, as kallsyms__parse is also used in:

	dso__load_kallsyms
          dso__load_all_kallsyms
             kallsyms__parse

- Arnaldo
--
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/