linux-kernel - Re: [PATCH -next] perf util: Fix memory leak in __parse

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Date:   Mon, 7 Dec 2020 13:45:26 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Zheng Zengkai <zhengzengkai@...wei.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, namhyung@...nel.org,
        linux-kernel@...r.kernel.org, huawei.libin@...wei.com
Subject: Re: [PATCH -next] perf util: Fix memory leak in __parse_regs()

Em Fri, Nov 27, 2020 at 03:45:40PM +0800, Zheng Zengkai escreveu:
> Ping...

Thanks, applied.

- Arnaldo
 
> > On Fri, Jul 03, 2020 at 05:33:44PM +0800, Zheng Zengkai wrote:
> > > when using perf record option '-I' or '--user-regs='
> > > along with argument '?' to list available register names,
> > > memory of variable 'os' allocated by strdup() needs to be released
> > > before __parse_regs() returns, otherwise memory leak will occur.
> > > 
> > > Fixes: bcc84ec65ad1 ("perf record: Add ability to name registers to record")
> > > Signed-off-by: Zheng Zengkai <zhengzengkai@...wei.com>
> > Acked-by: Jiri Olsa <jolsa@...hat.com>
> > 
> > thanks,
> > jirka
> > 
> > > ---
> > >   tools/perf/util/parse-regs-options.c | 2 +-
> > >   1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/tools/perf/util/parse-regs-options.c b/tools/perf/util/parse-regs-options.c
> > > index e687497b3aac..a4a100425b3a 100644
> > > --- a/tools/perf/util/parse-regs-options.c
> > > +++ b/tools/perf/util/parse-regs-options.c
> > > @@ -54,7 +54,7 @@ __parse_regs(const struct option *opt, const char *str, int unset, bool intr)
> > >   #endif
> > >   				fputc('\n', stderr);
> > >   				/* just printing available regs */
> > > -				return -1;
> > > +				goto error;
> > >   			}
> > >   #ifdef HAVE_PERF_REGS_SUPPORT
> > >   			for (r = sample_reg_masks; r->name; r++) {
> > > -- 
> > > 2.20.1
> > > 
> > .
> > 

-- 

- Arnaldo