This is a note to let you know that I've just added the patch titled
cpufreq: amd-pstate: fix memory leak on CPU EPP exit
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:
cpufreq-amd-pstate-fix-memory-leak-on-cpu-epp-exit.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 3d575bc13f858b0c6ec606f056fe39c0b0c7a39e
Author: Peng Ma <andypma@xxxxxxxxxxx>
Date: Thu May 16 14:30:42 2024 +0800
cpufreq: amd-pstate: fix memory leak on CPU EPP exit
[ Upstream commit cea04f3d9aeebda9d9c063c0dfa71e739c322c81 ]
The cpudata memory from kzalloc() in amd_pstate_epp_cpu_init() is
not freed in the analogous exit function, so fix that.
Signed-off-by: Peng Ma <andypma@xxxxxxxxxxx>
Acked-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Reviewed-by: Perry Yuan <Perry.Yuan@xxxxxxx>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index b8fdfd2c4f6fc..a5f4c255edadf 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1216,6 +1216,13 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
static int amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy)
{
+ struct amd_cpudata *cpudata = policy->driver_data;
+
+ if (cpudata) {
+ kfree(cpudata);
+ policy->driver_data = NULL;
+ }
+
pr_debug("CPU %d exiting\n", policy->cpu);
return 0;
}
