2022-05-18 04:15:59

by Yuanjun Gong

Subject: [PATCH 1/1] drm/amd/pm: fix a potential gpu_metrics_table memory leak

From: Gong Yuanjun <[email protected]>

gpu_metrics_table is allocated in yellow_carp_init_smc_tables() but
not freed in yellow_carp_fini_smc_tables().

Signed-off-by: Gong Yuanjun <[email protected]>
---
drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
index e2d099409123..c66c39ccf19c 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
@@ -190,6 +190,9 @@ static int yellow_carp_fini_smc_tables(struct smu_context *smu)
kfree(smu_table->watermarks_table);
smu_table->watermarks_table = NULL;

+ kfree(smu_table->gpu_metrics_table);
+ smu_table->gpu_metrics_table = NULL;
+
return 0;
}

--
2.17.1

2022-05-18 04:44:40

by Alex Deucher

Subject: Re: [PATCH 1/1] drm/amd/pm: fix a potential gpu_metrics_table memory leak

Applied. Thanks!

On Tue, May 17, 2022 at 9:13 AM Yuanjun Gong <[email protected]> wrote:
>
> From: Gong Yuanjun <[email protected]>
>
> gpu_metrics_table is allocated in yellow_carp_init_smc_tables() but
> not freed in yellow_carp_fini_smc_tables().
>
> Signed-off-by: Gong Yuanjun <[email protected]>
> ---
> drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
> index e2d099409123..c66c39ccf19c 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
> @@ -190,6 +190,9 @@ static int yellow_carp_fini_smc_tables(struct smu_context *smu)
> kfree(smu_table->watermarks_table);
> smu_table->watermarks_table = NULL;
>
> + kfree(smu_table->gpu_metrics_table);
> + smu_table->gpu_metrics_table = NULL;
> +
> return 0;
> }
>
> --
> 2.17.1
>