linux-kernel - Re: [PATCH v2] perf bpf: Fix memory leaks relating to BTF.

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Message-ID: <767e90d9-fb3e-93e2-ac67-940ab7e9ae28@linux.ibm.com>
Date:   Fri, 27 Aug 2021 12:58:09 +0530
From:   kajoljain <kjain@...ux.ibm.com>
To:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     eranian@...gle.com
Subject: Re: [PATCH v2] perf bpf: Fix memory leaks relating to BTF.

Patch looks good me.

Reviewed-by: Kajol Jain<kjain@...ux.ibm.com>

Thanks,
Kajol Jain

On 8/27/21 12:18 AM, Ian Rogers wrote:
> BTF needs to be freed with btf__free.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/util/annotate.c  | 2 +-
>  tools/perf/util/bpf-event.c | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index d43f6b5e5169..0bae061b2d6d 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -1833,7 +1833,7 @@ static int symbol__disassemble_bpf(struct symbol *sym,
>  	ret = 0;
>  out:
>  	free(prog_linfo);
> -	free(btf);
> +	btf__free(btf);
>  	fclose(s);
>  	bfd_close(bfdf);
>  	return ret;
> diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
> index cdecda1ddd36..17a9844e4fbf 100644
> --- a/tools/perf/util/bpf-event.c
> +++ b/tools/perf/util/bpf-event.c
> @@ -296,7 +296,7 @@ static int perf_event__synthesize_one_bpf_prog(struct perf_session *session,
>  
>  out:
>  	free(info_linear);
> -	free(btf);
> +	btf__free(btf);
>  	return err ? -1 : 0;
>  }
>  
> @@ -486,7 +486,7 @@ static void perf_env__add_bpf_info(struct perf_env *env, u32 id)
>  	perf_env__fetch_btf(env, btf_id, btf);
>  
>  out:
> -	free(btf);
> +	btf__free(btf);
>  	close(fd);
>  }
>  
>