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xwayland: set surface_id to 0 when client resource is found

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When Xwayland requests that a wl_surface be created and the X event is
handled before the wayland requests, a surface ID is stored to
window->surface_id and the window is added to the unpaired window list. When
weston_wm_create_surface is called, the window is removed from the list and
window->surface_id is set to zero. If window->surface_id is not zero when
weston_wm_window_destroy is called, the window is assumed to be in the
unpaired window list and wl_list_remove is called. If
weston_wm_window_handle_surface_id is called and the surface has already
been created, the window is not added to the unpaired window list, but
window->surface_id isn't set to zero. When the window is destroyed, removing
the window from the list is attempted anyway and a crash occurs.

This patch stores the surface ID in a temporary variable and only assigns it
to window->surface_id when the window is added to the unpaired window list.
Otherwise window->surface_id is set to zero to maintain its use as a flag
variable.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=80273
Signed-off-by: Tyler Veness <calcmogul@gmail.com>
This commit is contained in:
Tyler Veness 2014-07-02 15:00:44 -07:00 committed by Jason Ekstrand
parent 95ec0f95aa
commit cf4c13af98
1 changed files with 8 additions and 5 deletions
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13
xwayland/window-manager.c
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@ -1371,14 +1371,17 @@ weston_wm_window_handle_surface_id(struct weston_wm_window *window,
* hasn't been created yet. In that case put the window on
* the unpaired window list and continue when the surface gets
* created. */
window->surface_id = client_message->data.data32[0];
resource = wl_client_get_object(wm->server->client,
window->surface_id);
if (resource)
uint32_t surface = client_message->data.data32[0];
resource = wl_client_get_object(wm->server->client, surface);
if (resource) {
window->surface_id = 0;
xserver_map_shell_surface(window,
wl_resource_get_user_data(resource));
else
}
else {
window->surface_id = surface;
wl_list_insert(&wm->unpaired_window_list, &window->link);
}
}
static void