linux-kernel - [PATCH] drm/amd/pm: fix a memleak in aldebaran_tables

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Date:   Thu, 23 Nov 2023 15:33:22 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn
Cc:     Evan Quan <evan.quan@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Lijo Lazar <lijo.lazar@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Darren Powell <darren.powell@....com>,
        Yang Wang <kevinyang.wang@....com>,
        Yifan Zhang <yifan1.zhang@....com>, Le Ma <le.ma@....com>,
        Hawking Zhang <Hawking.Zhang@....com>,
        "Stanley.Yang" <Stanley.Yang@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/amd/pm: fix a memleak in aldebaran_tables_init

When kzalloc() for smu_table->ecc_table fails, we should free
the previously allocated resources to prevent memleak.

Fixes: edd794208555 ("drm/amd/pm: add message smu to get ecc_table v2")
Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
index 1a6675d70a4b..f1440869d1ce 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
@@ -257,8 +257,11 @@ static int aldebaran_tables_init(struct smu_context *smu)
 	}
 
 	smu_table->ecc_table = kzalloc(tables[SMU_TABLE_ECCINFO].size, GFP_KERNEL);
-	if (!smu_table->ecc_table)
+	if (!smu_table->ecc_table) {
+		kfree(smu_table->metrics_table);
+		kfree(smu_table->gpu_metrics_table);
 		return -ENOMEM;
+	}
 
 	return 0;
 }
-- 
2.17.1