When a new mode is set to modeset->mode, the previous mode should be freed. This fixes the following kmemleak report:
drm_mode_duplicate+0x45/0x220 [drm] drm_client_modeset_probe+0x944/0xf50 [drm] __drm_fb_helper_initial_config_and_unlock+0xb4/0x2c0 [drm_kms_helper] drm_fbdev_client_hotplug+0x2bc/0x4d0 [drm_kms_helper] drm_client_register+0x169/0x240 [drm] ast_pci_probe+0x142/0x190 [ast] local_pci_probe+0xdc/0x180 work_for_cpu_fn+0x4e/0xa0 process_one_work+0x8b7/0x1540 worker_thread+0x70a/0xed0 kthread+0x29f/0x340 ret_from_fork+0x1f/0x30
cc: stable@vger.kernel.org Reported-by: Zhang Yi yizhan@redhat.com Signed-off-by: Jocelyn Falempe jfalempe@redhat.com --- drivers/gpu/drm/drm_client_modeset.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index a4a62aa99984..5d4703b4648a 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -867,6 +867,9 @@ int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width, break; }
+ if (modeset->mode) + kfree(modeset->mode); + modeset->mode = drm_mode_duplicate(dev, mode); drm_connector_get(connector); modeset->connectors[modeset->num_connectors++] = connector;