From 2f3be3ca779b11c332441b10e00443a2510f4d7b Mon Sep 17 00:00:00 2001
From: Zhipeng Lu <alexious@zju.edu.cn>
Date: Sun, 24 Dec 2023 16:22:47 +0800
Subject: [PATCH] drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
Git-commit: 2f3be3ca779b11c332441b10e00443a2510f4d7b
Patch-mainline: v6.8-rc1
References: git-fixes
The hwmgr->backend, (i.e. data) allocated by kzalloc is not freed in
the error-handling paths of smu7_get_evv_voltages and
smu7_update_edc_leakage_table. However, it did be freed in the
error-handling of phm_initializa_dynamic_state_adjustment_rule_settings,
by smu7_hwmgr_backend_fini. So the lack of free in smu7_get_evv_voltages
and smu7_update_edc_leakage_table is considered a memleak in this patch.
Fixes: 599a7e9fe1b6 ("drm/amd/powerplay: implement smu7 hwmgr to manager asics with smu ip version 7.")
Fixes: 8f0804c6b7d0 ("drm/amd/pm: add edc leakage controller setting")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index 11372fcc59c8..b1a8799e2dee 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -2974,6 +2974,8 @@ static int smu7_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
result = smu7_get_evv_voltages(hwmgr);
if (result) {
pr_info("Get EVV Voltage Failed. Abort Driver loading!\n");
+ kfree(hwmgr->backend);
+ hwmgr->backend = NULL;
return -EINVAL;
}
} else {
@@ -3019,8 +3021,10 @@ static int smu7_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
}
result = smu7_update_edc_leakage_table(hwmgr);
- if (result)
+ if (result) {
+ smu7_hwmgr_backend_fini(hwmgr);
return result;
+ }
return 0;
}
--
2.35.3