Merge pull request #727 from martinetd/x11_wl_backend_fixes

Address sanitizer fixes

backend/wayland/wl_seat.c

@@ -26,6 +26,11 @@ static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
 		// GNOME sends a pointer enter when the surface is being destroyed
 		return;
 	}
+	if (wlr_wl_pointer->current_output) {
+		wl_list_remove(&wlr_wl_pointer->output_destroy_listener.link);
+	}
+	wl_signal_add(&output->wlr_output.events.destroy,
+		&wlr_wl_pointer->output_destroy_listener);
 	wlr_wl_pointer->current_output = output;
 	output->enter_serial = serial;
 	wlr_wl_output_update_cursor(output);
@@ -49,7 +54,7 @@ static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer,
 	struct wlr_wl_pointer *wlr_wl_pointer =
 		(struct wlr_wl_pointer *)dev->pointer;
 	if (!wlr_wl_pointer->current_output) {
-		wlr_log(L_ERROR, "pointer motion event without current output");
+		wlr_log(L_DEBUG, "pointer motion event without current output");
 		return;
 	}
 
@@ -231,6 +236,14 @@ static struct wlr_input_device *allocate_device(struct wlr_wl_backend *backend,
 	return wlr_device;
 }
 
+static void wlr_wl_pointer_handle_output_destroy(struct wl_listener *listener,
+		void *data) {
+	struct wlr_wl_pointer *wlr_wl_pointer =
+		wl_container_of(listener, wlr_wl_pointer, output_destroy_listener);
+	wlr_wl_pointer->current_output = NULL;
+	wl_list_remove(&wlr_wl_pointer->output_destroy_listener.link);
+}
+
 static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
 		enum wl_seat_capability caps) {
 	struct wlr_wl_backend *backend = data;
@@ -243,6 +256,8 @@ static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
 			wlr_log(L_ERROR, "Unable to allocate wlr_wl_pointer");
 			return;
 		}
+		wlr_wl_pointer->output_destroy_listener.notify =
+			wlr_wl_pointer_handle_output_destroy;
 
 		struct wlr_input_device *wlr_device;
 		if (!(wlr_device = allocate_device(backend, WLR_INPUT_DEVICE_POINTER))) {

backend/x11/backend.c

@@ -143,6 +143,7 @@ static bool handle_x11_event(struct wlr_x11_backend *x11, xcb_generic_event_t *e
 		};
 
 		wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &abs);
+		free(pointer);
 		break;
 	}
 	case XCB_CLIENT_MESSAGE: {
@@ -317,12 +318,20 @@ static void wlr_x11_backend_destroy(struct wlr_backend *backend) {
 
 	wlr_signal_emit_safe(&backend->events.destroy, backend);
 
+	if (x11->event_source) {
+		wl_event_source_remove(x11->event_source);
+	}
 	wl_list_remove(&x11->display_destroy.link);
 
 	wl_event_source_remove(x11->frame_timer);
 	wlr_egl_finish(&x11->egl);
 
-	xcb_disconnect(x11->xcb_conn);
+	if (x11->xcb_conn) {
+		xcb_disconnect(x11->xcb_conn);
+	}
+	if (x11->xlib_conn) {
+		XCloseDisplay(x11->xlib_conn);
+	}
 	free(x11);
 }
 

include/backend/wayland.h

@@ -71,6 +71,7 @@ struct wlr_wl_pointer {
 	struct wlr_pointer wlr_pointer;
 	enum wlr_axis_source axis_source;
 	struct wlr_wl_backend_output *current_output;
+	struct wl_listener output_destroy_listener;
 };
 
 void wlr_wl_registry_poll(struct wlr_wl_backend *backend);

include/wlr/types/wlr_xdg_shell.h

@@ -53,6 +53,7 @@ struct wlr_xdg_popup_grab {
 	struct wlr_seat *seat;
 	struct wl_list popups;
 	struct wl_list link; // wlr_xdg_shell::popup_grabs
+	struct wl_listener seat_destroy;
 };
 
 enum wlr_xdg_surface_role {

include/wlr/types/wlr_xdg_shell_v6.h

@@ -53,6 +53,7 @@ struct wlr_xdg_popup_grab_v6 {
 	struct wlr_seat *seat;
 	struct wl_list popups;
 	struct wl_list link; // wlr_xdg_shell_v6::popup_grabs
+	struct wl_listener seat_destroy;
 };
 
 enum wlr_xdg_surface_v6_role {

rootston/output.c

@@ -680,6 +680,7 @@ static void damage_from_surface(struct wlr_surface *surface,
 		}
 		pixman_region32_translate(&damage, box.x, box.y);
 		wlr_output_damage_add(output->damage, &damage);
+		pixman_region32_fini(&damage);
 	} else {
 		pixman_box32_t *extents =
 			pixman_region32_extents(&surface->current->surface_damage);

types/wlr_pointer.c

@@ -14,7 +14,10 @@ void wlr_pointer_init(struct wlr_pointer *pointer,
 }
 
 void wlr_pointer_destroy(struct wlr_pointer *pointer) {
-	if (pointer && pointer->impl && pointer->impl->destroy) {
+	if (!pointer) {
+		return;
+	}
+	if (pointer->impl && pointer->impl->destroy) {
 		pointer->impl->destroy(pointer);
 	} else {
 		wl_list_remove(&pointer->events.motion.listener_list);

types/wlr_xdg_shell.c

@@ -131,6 +131,24 @@ static const struct wlr_keyboard_grab_interface xdg_keyboard_grab_impl = {
 	.cancel = xdg_keyboard_grab_cancel,
 };
 
+static void xdg_surface_destroy(struct wlr_xdg_surface *surface);
+
+static void wlr_xdg_popup_grab_handle_seat_destroy(
+		struct wl_listener *listener, void *data) {
+	struct wlr_xdg_popup_grab *xdg_grab =
+		wl_container_of(listener, xdg_grab, seat_destroy);
+
+	wl_list_remove(&xdg_grab->seat_destroy.link);
+
+	struct wlr_xdg_popup *popup, *next;
+	wl_list_for_each_safe(popup, next, &xdg_grab->popups, grab_link) {
+		xdg_surface_destroy(popup->base);
+	}
+
+	wl_list_remove(&xdg_grab->link);
+	free(xdg_grab);
+}
+
 static struct wlr_xdg_popup_grab *xdg_shell_popup_grab_from_seat(
 		struct wlr_xdg_shell *shell, struct wlr_seat *seat) {
 	struct wlr_xdg_popup_grab *xdg_grab;
@@ -155,6 +173,9 @@ static struct wlr_xdg_popup_grab *xdg_shell_popup_grab_from_seat(
 	wl_list_insert(&shell->popup_grabs, &xdg_grab->link);
 	xdg_grab->seat = seat;
 
+	xdg_grab->seat_destroy.notify = wlr_xdg_popup_grab_handle_seat_destroy;
+	wl_signal_add(&seat->events.destroy, &xdg_grab->seat_destroy);
+
 	return xdg_grab;
 }
 

types/wlr_xdg_shell_v6.c

@@ -131,6 +131,24 @@ static const struct wlr_keyboard_grab_interface xdg_keyboard_grab_impl = {
 	.cancel = xdg_keyboard_grab_cancel,
 };
 
+static void xdg_surface_destroy(struct wlr_xdg_surface_v6 *surface);
+
+static void wlr_xdg_popup_grab_handle_seat_destroy(
+		struct wl_listener *listener, void *data) {
+	struct wlr_xdg_popup_grab_v6 *xdg_grab =
+		wl_container_of(listener, xdg_grab, seat_destroy);
+
+	wl_list_remove(&xdg_grab->seat_destroy.link);
+
+	struct wlr_xdg_popup_v6 *popup, *next;
+	wl_list_for_each_safe(popup, next, &xdg_grab->popups, grab_link) {
+		xdg_surface_destroy(popup->base);
+	}
+
+	wl_list_remove(&xdg_grab->link);
+	free(xdg_grab);
+}
+
 static struct wlr_xdg_popup_grab_v6 *xdg_shell_popup_grab_from_seat(
 		struct wlr_xdg_shell_v6 *shell, struct wlr_seat *seat) {
 	struct wlr_xdg_popup_grab_v6 *xdg_grab;
@@ -155,6 +173,9 @@ static struct wlr_xdg_popup_grab_v6 *xdg_shell_popup_grab_from_seat(
 	wl_list_insert(&shell->popup_grabs, &xdg_grab->link);
 	xdg_grab->seat = seat;
 
+	xdg_grab->seat_destroy.notify = wlr_xdg_popup_grab_handle_seat_destroy;
+	wl_signal_add(&seat->events.destroy, &xdg_grab->seat_destroy);
+
 	return xdg_grab;
 }