linux-kernel - Re: [PATCH] perf jit: memset variable st using the correct size

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Message-ID: <20160419134741.GE3677@kernel.org>
Date:	Tue, 19 Apr 2016 10:47:41 -0300
From:	rnaldo Carvalho de Melo <acme@...nel.org>
To:	Colin King <colin.king@...onical.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf jit: memset variable st using the correct size

Em Tue, Apr 19, 2016 at 12:07:18AM +0100, Colin King escreveu:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The current code is memsetting the struct stat variable st with
> the size of stat (which turns out to be 1 byte) rather than the
> size of variable sz.

Thanks, applied.

- Arnaldo
 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  tools/perf/util/jitdump.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c
> index 52fcef3..86afe96 100644
> --- a/tools/perf/util/jitdump.c
> +++ b/tools/perf/util/jitdump.c
> @@ -412,7 +412,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr)
>  		return -1;
>  	}
>  	if (stat(filename, &st))
> -		memset(&st, 0, sizeof(stat));
> +		memset(&st, 0, sizeof(st));
>  
>  	event->mmap2.header.type = PERF_RECORD_MMAP2;
>  	event->mmap2.header.misc = PERF_RECORD_MISC_USER;
> @@ -500,7 +500,7 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr)
>  	size++; /* for \0 */
>  
>  	if (stat(filename, &st))
> -		memset(&st, 0, sizeof(stat));
> +		memset(&st, 0, sizeof(st));
>  
>  	size = PERF_ALIGN(size, sizeof(u64));
>  
> -- 
> 2.7.4