linux-kernel - Re: [PATCH 3/8] perf tools: free aliases[j] in pmu.c if name

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 09 Jan 2014 09:53:33 -0500
From:	Dongsheng Yang <yangds.fnst@...fujitsu.com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
CC:	linux-kernel@...r.kernel.org, mingo@...nel.org, dsahern@...il.com,
	artagnon@...il.com
Subject: Re: [PATCH 3/8] perf tools: free aliases[j] in pmu.c if name_only
 is true.

On 01/08/2014 10:12 AM, Arnaldo Carvalho de Melo wrote:
> What for? Please be clear in the changelogs, it helps with review.
>
> Now I'll have to follow the logic to figure this out, i.e. _why_ we
> should free aliases[j] if name_only is true? Is it safe?

Sorry for my lazy on the changelogs here :(.

As aliases is a 2-D array malloced in function print_pmu_events(), we 
should free it after printf. But we just did it when (!name_only).

This patch fix the leak error in print_pmu_events() when name_only is true.

I will update the commit message in next version.

- Yang
>
> - Arnaldo
>
> Em Mon, Dec 30, 2013 at 10:26:38AM -0500, Dongsheng Yang escreveu:
>> Signed-off-by: Dongsheng Yang <yangds.fnst@...fujitsu.com>
>> ---
>>   tools/perf/util/pmu.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
>> index 331dc2c..169c480 100644
>> --- a/tools/perf/util/pmu.c
>> +++ b/tools/perf/util/pmu.c
>> @@ -752,6 +752,7 @@ unsigned int print_pmu_events(const char *event_glob, bool name_only)
>>   	for (j = 0; j < len; j++) {
>>   		if (name_only) {
>>   			printf("%s ", aliases[j]);
>> +			zfree(&aliases[j]);
>>   			count++;
>>   			continue;
>>   		}
>> -- 
>> 1.8.2.1
> --
> 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/
>

--
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/