linux-kernel - Re: [RFC PATCH 01/22] perf: probe: avoid segfault if passed with ''.

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:	Tue, 5 May 2015 12:26:32 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	Wang Nan <wangnan0@...wei.com>, ast@...mgrid.com,
	davem@...emloft.net, mingo@...hat.com, a.p.zijlstra@...llo.nl,
	jolsa@...nel.org, lizefan@...nel.org, linux-kernel@...r.kernel.org,
	pi3orama@....com, hekuang@...wei.com
Subject: Re: [RFC PATCH 01/22] perf: probe: avoid segfault if passed with ''.

Em Tue, May 05, 2015 at 11:09:21PM +0900, Masami Hiramatsu escreveu:
> On 2015/04/30 19:52, Wang Nan wrote:
> > Since parse_perf_probe_point() deals with a user passed argument, we
> > should not assume it to be a valid string.
> > 
> > Without this patch, if pass '' to perf probe, a segfault raises:
> > 
> >  $ perf probe -a ''
> >  Segmentation fault

> > This patch checks argument of parse_perf_probe_point() before
> > string processing.

> > After this patch:

> >  $ perf probe -a ''
> > 
> >   usage: perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...]
> >      or: perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...]
> >      ...
 
> This looks OK to me.
 
> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
 
> Could you split this as an independent bugfix with my ack?

You mean split from this patchkit? I already did that, added it to my
perf/urgent branch, where I'll add your acked-by as well,

- 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/