From: Cristian Ciocaltea Date: Thu, 11 Jul 2024 11:26:55 +0000 (+0300) Subject: drm/bridge-connector: Fix double free in error handling paths X-Git-Tag: v6.11-rc3~15^2~3^2~2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1fb0847392e220890c9cf8908e3ab8e7e1227ff6;p=thirdparty%2Fkernel%2Flinux.git drm/bridge-connector: Fix double free in error handling paths The recent switch to drmm allocation in drm_bridge_connector_init() may cause double free on bridge_connector in some of the error handling paths. Drop the explicit kfree() calls on bridge_connector. Fixes: c12907be57b1 ("drm/bridge-connector: switch to using drmm allocations") Signed-off-by: Cristian Ciocaltea Signed-off-by: default avatarRobert Foss Reviewed-by: Dmitry Baryshkov Link: https://patchwork.freedesktop.org/patch/msgid/20240711-bridge-connector-fix-dbl-free-v1-1-d558b2d0eb93@collabora.com --- diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c index 0869b663f17e4..a4fbf1eb7ac5a 100644 --- a/drivers/gpu/drm/drm_bridge_connector.c +++ b/drivers/gpu/drm/drm_bridge_connector.c @@ -443,10 +443,8 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, panel_bridge = bridge; } - if (connector_type == DRM_MODE_CONNECTOR_Unknown) { - kfree(bridge_connector); + if (connector_type == DRM_MODE_CONNECTOR_Unknown) return ERR_PTR(-EINVAL); - } if (bridge_connector->bridge_hdmi) ret = drmm_connector_hdmi_init(drm, connector, @@ -461,10 +459,8 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, ret = drmm_connector_init(drm, connector, &drm_bridge_connector_funcs, connector_type, ddc); - if (ret) { - kfree(bridge_connector); + if (ret) return ERR_PTR(ret); - } drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs);