This is a note to let you know that I've just added the patch titled
drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-pm-smu7-fix-a-memleak-in-smu7_hwmgr_backend_.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 096db8d0980f7f1e2531c676c40f00c1d790e1f8
Author: Zhipeng Lu <alexious@xxxxxxxxxx>
Date: Sun Dec 24 16:22:47 2023 +0800
drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
[ Upstream commit 2f3be3ca779b11c332441b10e00443a2510f4d7b ]
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@xxxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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;
}
