linux-kernel - Re: [PATCH] perf c2c: Fix memory leak in c2c_he

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Message-ID: <1847ad5d-05b6-5680-f08d-bdd8fbf54da3@huawei.com>
Date:   Tue, 26 Nov 2019 11:00:31 +0800
From:   Yunfeng Ye <yeyunfeng@...wei.com>
To:     Jiri Olsa <jolsa@...hat.com>
CC:     <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
        <mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
        <namhyung@...nel.org>, <linux-kernel@...r.kernel.org>,
        "hushiyuan@...wei.com" <hushiyuan@...wei.com>,
        "linfeilong@...wei.com" <linfeilong@...wei.com>,
        <arnaldo.melo@...il.com>
Subject: Re: [PATCH] perf c2c: Fix memory leak in c2c_he_zalloc()



On 2019/10/25 20:01, Jiri Olsa wrote:
> On Fri, Oct 25, 2019 at 05:42:47PM +0800, Yunfeng Ye wrote:
>> A memory leak in c2c_he_zalloc() is found by visual inspection.
>>
>> Fix this by adding memory free on the error paths in c2c_he_zalloc().
>>
>> Fixes: 7f834c2e84bb ("perf c2c report: Display node for cacheline address")
>> Fixes: 1e181b92a2da ("perf c2c report: Add 'node' sort key")
>> Signed-off-by: Yunfeng Ye <yeyunfeng@...wei.com>
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>
> 

Is this patch applied? thanks

> thanks,
> jirka
> 
>> ---
>>  tools/perf/builtin-c2c.c | 14 +++++++++++---
>>  1 file changed, 11 insertions(+), 3 deletions(-)
>>
>> diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
>> index e69f44941aad..ad7d38a9dcbe 100644
>> --- a/tools/perf/builtin-c2c.c
>> +++ b/tools/perf/builtin-c2c.c
>> @@ -138,21 +138,29 @@ static void *c2c_he_zalloc(size_t size)
>>
>>  	c2c_he->cpuset = bitmap_alloc(c2c.cpus_cnt);
>>  	if (!c2c_he->cpuset)
>> -		return NULL;
>> +		goto free_c2c_he;
>>
>>  	c2c_he->nodeset = bitmap_alloc(c2c.nodes_cnt);
>>  	if (!c2c_he->nodeset)
>> -		return NULL;
>> +		goto free_cpuset;
>>
>>  	c2c_he->node_stats = zalloc(c2c.nodes_cnt * sizeof(*c2c_he->node_stats));
>>  	if (!c2c_he->node_stats)
>> -		return NULL;
>> +		goto free_nodeset;
>>
>>  	init_stats(&c2c_he->cstats.lcl_hitm);
>>  	init_stats(&c2c_he->cstats.rmt_hitm);
>>  	init_stats(&c2c_he->cstats.load);
>>
>>  	return &c2c_he->he;
>> +
>> +free_nodeset:
>> +	free(c2c_he->nodeset);
>> +free_cpuset:
>> +	free(c2c_he->cpuset);
>> +free_c2c_he:
>> +	free(c2c_he);
>> +	return NULL;
>>  }
>>
>>  static void c2c_he_free(void *he)
>> -- 
>> 2.7.4
>>
> 
> 
> .
>