Re: [PATCH] perf tools: return errcode in cs_etm__process_auxtrace_info

From: Arnaldo Carvalho de Melo
Date: Mon Mar 18 2019 - 13:15:26 EST


Em Fri, Mar 15, 2019 at 10:26:49AM +0800, Yue Haibing escreveu:
> From: YueHaibing <yuehaibing@xxxxxxxxxx>
>
> 'err' is set in err path, but it's not returned to callers.
> Also fix a pass zero to PTR_ERR issue.

Next time please submit two patches, one for the PTR_ERR and another for
not throwing away the err = -E!INVAL and returning just -EINVAL, I'm
doing it this time.

- Arnaldo

> Fixes: cd8bfd8c973e ("perf tools: Add processing of coresight metadata")
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> ---
> tools/perf/util/cs-etm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
> index 1108049..111f33c 100644
> --- a/tools/perf/util/cs-etm.c
> +++ b/tools/perf/util/cs-etm.c
> @@ -1908,7 +1908,7 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
>
> /* Something went wrong, no need to continue */
> if (!inode) {
> - err = PTR_ERR(inode);
> + err = -ENOMEM;
> goto err_free_metadata;
> }
>
> @@ -2023,5 +2023,5 @@ int cs_etm__process_auxtrace_info(union perf_event *event,
> err_free_hdr:
> zfree(&hdr);
>
> - return -EINVAL;
> + return err;
> }
> --
> 2.7.0
>

--

- Arnaldo