vc4_perfmon_open_file() will instantiate a mutex for that file instance, but we never call mutex_destroy () in vc4_perfmon_close_file(). Let's add that missing call. Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx> Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx> --- drivers/gpu/drm/vc4/vc4_perfmon.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/vc4/vc4_perfmon.c b/drivers/gpu/drm/vc4/vc4_perfmon.c index 79a74184d732..c4ac2c946238 100644 --- a/drivers/gpu/drm/vc4/vc4_perfmon.c +++ b/drivers/gpu/drm/vc4/vc4_perfmon.c @@ -133,6 +133,7 @@ void vc4_perfmon_close_file(struct vc4_file *vc4file) idr_for_each(&vc4file->perfmon.idr, vc4_perfmon_idr_del, NULL); idr_destroy(&vc4file->perfmon.idr); mutex_unlock(&vc4file->perfmon.lock); + mutex_destroy(&vc4file->perfmon.lock); } int vc4_perfmon_create_ioctl(struct drm_device *dev, void *data, -- 2.36.1