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wayland/cursor-surface: Update cursor on dispose

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Otherwise we'll have a cursor sprite backed by a surface that no longer
exist. This usually doesn't happen, but can happen in rare situations
related to pointer capability changes Wayland client cursor changes and
hotplugs.

Fixes the following crash:

  #0 meta_wayland_buffer_get_resource() at ../src/wayland/meta-wayland-buffer.c:128
  #1 realize_cursor_sprite_from_wl_buffer_for_gpu() at ../src/backends/native/meta-cursor-renderer-native.c:1649
  #2 realize_cursor_sprite_for_gpu() at ../src/backends/native/meta-cursor-renderer-native.c:1869
  #3 realize_cursor_sprite() at ../src/backends/native/meta-cursor-renderer-native.c:1887
  #4 meta_cursor_renderer_native_update_cursor() at ../src/backends/native/meta-cursor-renderer-native.c:1100
  #5 meta_cursor_renderer_update_cursor() at ../src/backends/meta-cursor-renderer.c:414
  #6 meta_cursor_renderer_force_update() at ../src/backends/meta-cursor-renderer.c:449
  #7 update_cursors() at ../src/backends/meta-backend.c:328
  #8 meta_backend_monitors_changed() at ../src/backends/meta-backend.c:338
  #9 meta_monitor_manager_notify_monitors_changed() at ../src/backends/meta-monitor-manager.c:3590
 #10 meta_monitor_manager_rebuild() at ../src/backends/meta-monitor-manager.c:3678
 #11 meta_monitor_manager_native_apply_monitors_config() at ../src/backends/native/meta-monitor-manager-native.c:343
 #12 meta_monitor_manager_apply_monitors_config() at ../src/backends/meta-monitor-manager.c:706
 #13 meta_monitor_manager_ensure_configured() at ../src/backends/meta-monitor-manager.c:779
 #14 meta_monitor_manager_reconfigure() at ../src/backends/meta-monitor-manager.c:3738
 #15 meta_monitor_manager_reload() at ../src/backends/meta-monitor-manager.c:3745

or the following on gnome-43:

 #0 meta_wayland_surface_get_buffer at ../src/wayland/meta-wayland-surface.c:441
 #1 meta_cursor_sprite_wayland_get_buffer at ../src/wayland/meta-cursor-sprite-wayland.c:83
 #2 realize_cursor_sprite_from_wl_buffer_for_gpu at ../src/backends/native/meta-cursor-renderer-native.c:1612
 #3 realize_cursor_sprite_for_gpu at ../src/backends/native/meta-cursor-renderer-native.c:1836
 #4 realize_cursor_sprite at ../src/backends/native/meta-cursor-renderer-native.c:1854
 #5 meta_cursor_renderer_native_update_cursor at ../src/backends/native/meta-cursor-renderer-native.c:1087
 #6 meta_cursor_renderer_update_cursor at ../src/backends/meta-cursor-renderer.c:413
 #7 meta_cursor_renderer_force_update at ../src/backends/meta-cursor-renderer.c:448
 #8 update_cursors at ../src/backends/meta-backend.c:344
 #9 meta_backend_monitors_changed at ../src/backends/meta-backend.c:354

Related: https://bugzilla.redhat.com/show_bug.cgi?id=2185113
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2968>
This commit is contained in:
Jonas Ådahl 2023-04-17 18:35:37 +02:00 committed by Marge Bot
parent 9252131348
commit 867494d3df
11 changed files with 547 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
meson.build
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@ -212,6 +212,7 @@ endif
if have_wayland
wayland_server_dep = dependency('wayland-server', version: wayland_server_req)
wayland_client_dep = dependency('wayland-client', version: wayland_server_req)
wayland_cursor_dep = dependency('wayland-cursor')
wayland_protocols_dep = dependency('wayland-protocols',
version: wayland_protocols_req)
wayland_egl_dep = dependency('wayland-egl')

1
src/backends/meta-backend-private.h
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@ -135,6 +135,7 @@ META_EXPORT_TEST
MetaCursorTracker * meta_backend_get_cursor_tracker (MetaBackend *backend);
MetaCursorRenderer * meta_backend_get_cursor_renderer_for_device (MetaBackend *backend,
ClutterInputDevice *device);
META_EXPORT_TEST
MetaCursorRenderer * meta_backend_get_cursor_renderer (MetaBackend *backend);
META_EXPORT_TEST
MetaRenderer * meta_backend_get_renderer (MetaBackend *backend);

2
src/backends/meta-cursor-renderer.h
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@ -29,6 +29,7 @@
#include "backends/meta-backend-types.h"
#include "backends/meta-cursor.h"
#include "core/util-private.h"
#define META_TYPE_HW_CURSOR_INHIBITOR (meta_hw_cursor_inhibitor_get_type ())
G_DECLARE_INTERFACE (MetaHwCursorInhibitor, meta_hw_cursor_inhibitor,
@ -64,6 +65,7 @@ void meta_cursor_renderer_set_cursor (MetaCursorRenderer *renderer,
void meta_cursor_renderer_update_position (MetaCursorRenderer *renderer);
void meta_cursor_renderer_force_update (MetaCursorRenderer *renderer);
META_EXPORT_TEST
MetaCursorSprite * meta_cursor_renderer_get_cursor (MetaCursorRenderer *renderer);
graphene_rect_t meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,

8
src/tests/meson.build
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@ -409,6 +409,14 @@ if have_native_tests
],
'variants': kms_test_variants,
},
{
'name': 'kms-cursor-hotplug',
'suite': 'backends/native',
'sources': [
'native-kms-cursor-hotplug.c',
wayland_test_utils,
],
},
]
privileged_test_cases += kms_test_cases

30
src/tests/monitor-configs/kms-cursor-hotplug-off.xml Normal file
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@ -0,0 +1,30 @@
<monitors version="2">
<configuration>
<logicalmonitor>
<x>0</x>
<y>0</y>
<primary>yes</primary>
<monitor>
<monitorspec>
<connector>Meta-0</connector>
<vendor>MetaTestVendor</vendor>
<product>MetaVirtualMonitor</product>
<serial>0x1234</serial>
</monitorspec>
<mode>
<width>100</width>
<height>100</height>
<rate>60</rate>
</mode>
</monitor>
</logicalmonitor>
<disabled>
<monitorspec>
<connector>Virtual-1</connector>
<vendor>unknown</vendor>
<product>unknown</product>
<serial>unknown</serial>
</monitorspec>
</disabled>
</configuration>
</monitors>

40
src/tests/monitor-configs/kms-cursor-hotplug-on.xml Normal file
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@ -0,0 +1,40 @@
<monitors version="2">
<configuration>
<logicalmonitor>
<x>0</x>
<y>0</y>
<primary>yes</primary>
<monitor>
<monitorspec>
<connector>Virtual-1</connector>
<vendor>unknown</vendor>
<product>unknown</product>
<serial>unknown</serial>
</monitorspec>
<mode>
<width>1024</width>
<height>768</height>
<rate>60.003841</rate>
</mode>
</monitor>
</logicalmonitor>
<logicalmonitor>
<x>1024</x>
<y>0</y>
<primary>no</primary>
<monitor>
<monitorspec>
<connector>Meta-0</connector>
<vendor>MetaTestVendor</vendor>
<product>MetaVirtualMonitor</product>
<serial>0x1234</serial>
</monitorspec>
<mode>
<width>100</width>
<height>100</height>
<rate>60</rate>
</mode>
</monitor>
</logicalmonitor>
</configuration>
</monitors>

166
src/tests/native-kms-cursor-hotplug.c Normal file
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@ -0,0 +1,166 @@
/*
* Copyright (C) 2022 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/meta-monitor-config-manager.h"
#include "backends/meta-virtual-monitor.h"
#include "core/window-private.h"
#include "meta-test/meta-context-test.h"
#include "meta/meta-backend.h"
#include "meta/meta-cursor-tracker.h"
#include "tests/meta-test-utils.h"
#include "tests/meta-wayland-test-driver.h"
#include "tests/meta-wayland-test-utils.h"
#include "tests/native-screen-cast.h"
#include "tests/native-virtual-monitor.h"
#include "wayland/meta-cursor-sprite-wayland.h"
#include "wayland/meta-wayland-private.h"
#include "wayland/meta-wayland-seat.h"
static MetaContext *test_context;
static void
meta_test_cursor_hotplug (void)
{
MetaBackend *backend = meta_context_get_backend (test_context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaCursorRenderer *cursor_renderer = meta_backend_get_cursor_renderer (backend);
MetaWaylandCompositor *wayland_compositor =
meta_context_get_wayland_compositor (test_context);
MetaWaylandSeat *wayland_seat = wayland_compositor->seat;
g_autoptr (MetaWaylandTestDriver) test_driver = NULL;
MetaCursorSprite *cursor_sprite;
g_autoptr (MetaVirtualMonitorInfo) monitor_info = NULL;
MetaVirtualMonitor *virtual_monitor;
ClutterSeat *seat;
g_autoptr (ClutterVirtualInputDevice) virtual_pointer = NULL;
MetaWaylandTestClient *test_client;
MetaWindow *window;
GError *error = NULL;
test_driver = meta_wayland_test_driver_new (wayland_compositor);
seat = meta_backend_get_default_seat (backend);
virtual_pointer = clutter_seat_create_virtual_device (seat,
CLUTTER_POINTER_DEVICE);
meta_set_custom_monitor_config_full (backend, "kms-cursor-hotplug-off.xml",
META_MONITORS_CONFIG_FLAG_NONE);
monitor_info = meta_virtual_monitor_info_new (100, 100, 60.0,
"MetaTestVendor",
"MetaVirtualMonitor",
"0x1234");
virtual_monitor = meta_monitor_manager_create_virtual_monitor (monitor_manager,
monitor_info,
&error);
if (!virtual_monitor)
g_error ("Failed to create virtual monitor: %s", error->message);
meta_monitor_manager_reload (monitor_manager);
clutter_virtual_input_device_notify_absolute_motion (virtual_pointer,
g_get_monotonic_time (),
50, 50);
test_client = meta_wayland_test_client_new (test_context,
"kms-cursor-hotplug-helper");
if (!test_client)
g_error ("Failed to launch test client: %s", error->message);
while (TRUE)
{
window = meta_find_window_from_title (test_context,
"kms-cursor-hotplug-helper");
if (window && window->visible_to_compositor)
break;
g_main_context_iteration (NULL, TRUE);
}
meta_window_move_frame (window, FALSE, 0, 0);
meta_wait_for_paint (test_context);
cursor_renderer = meta_backend_get_cursor_renderer (backend);
while (TRUE)
{
cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
if (cursor_sprite)
break;
g_main_context_iteration (NULL, TRUE);
}
g_assert_true (META_IS_CURSOR_SPRITE_WAYLAND (cursor_sprite));
/*
* This tests a particular series of events:
*
* 1) Unplug the mouse
* 2) Client attaches a new cursor buffer
* 3) Client destroys cursor surface
* 4) Monitor hotplug
*
* This would cause a NULL pointer deference when getting the buffer from the
* cursor surface when trying to realize the hardware cursor buffer on the
* hotplugged monitor.
*/
g_clear_object (&virtual_pointer);
while (!(wayland_seat->capabilities & WL_SEAT_CAPABILITY_POINTER))
g_main_context_iteration (NULL, TRUE);
meta_wayland_test_driver_emit_sync_event (test_driver, 0);
meta_wayland_test_driver_wait_for_sync_point (test_driver, 0);
meta_set_custom_monitor_config_full (backend, "kms-cursor-hotplug-on.xml",
META_MONITORS_CONFIG_FLAG_NONE);
meta_monitor_manager_reload (monitor_manager);
meta_wait_for_paint (test_context);
meta_wayland_test_driver_emit_sync_event (test_driver, 1);
meta_wayland_test_client_finish (test_client);
}
static void
init_tests (void)
{
g_test_add_func ("/wayland/cursor-hotplug",
meta_test_cursor_hotplug);
}
int
main (int argc,
char **argv)
{
g_autoptr (MetaContext) context = NULL;
context = meta_create_test_context (META_CONTEXT_TEST_TYPE_VKMS,
META_CONTEXT_TEST_FLAG_NO_X11 |
META_CONTEXT_TEST_FLAG_TEST_CLIENT);
g_assert (meta_context_configure (context, &argc, &argv, NULL));
test_context = context;
init_tests ();
return meta_context_test_run_tests (META_CONTEXT_TEST (context),
META_TEST_RUN_FLAG_NONE);
}

286
src/tests/wayland-test-clients/kms-cursor-hotplug-helper.c Normal file
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@ -0,0 +1,286 @@
/*
* Copyright (C) 2023 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include "wayland-test-client-utils.h"
static WaylandDisplay *display;
static struct wl_registry *wl_registry;
static struct wl_seat *wl_seat;
static struct wl_pointer *wl_pointer;
static uint32_t enter_serial;
static struct wl_surface *surface;
static struct xdg_surface *xdg_surface;
static struct xdg_toplevel *xdg_toplevel;
struct wl_surface *cursor_surface;
struct wl_cursor_theme *cursor_theme;
struct wl_cursor *cursor;
struct wl_cursor *cursor2;
static gboolean running;
static void
init_surface (void)
{
xdg_toplevel_set_title (xdg_toplevel, "kms-cursor-hotplug-helper");
wl_surface_commit (surface);
}
static void
draw_main (int width,
int height)
{
draw_surface (display, surface, width, height, 0xff00ff00);
}
static void
handle_xdg_toplevel_configure (void *data,
struct xdg_toplevel *xdg_toplevel,
int32_t width,
int32_t height,
struct wl_array *state)
{
}
static void
handle_xdg_toplevel_close (void *data,
struct xdg_toplevel *xdg_toplevel)
{
g_assert_not_reached ();
}
static void
handle_xdg_toplevel_configure_bounds (void *data,
struct xdg_toplevel *xdg_toplevel,
int32_t bounds_width,
int32_t bounds_height)
{
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
handle_xdg_toplevel_configure,
handle_xdg_toplevel_close,
handle_xdg_toplevel_configure_bounds,
};
static void
handle_xdg_surface_configure (void *data,
struct xdg_surface *xdg_surface,
uint32_t serial)
{
draw_main (100, 100);
xdg_surface_ack_configure (xdg_surface, serial);
wl_surface_commit (surface);
}
static const struct xdg_surface_listener xdg_surface_listener = {
handle_xdg_surface_configure,
};
static void
pointer_handle_enter (void *data,
struct wl_pointer *pointer,
uint32_t serial,
struct wl_surface *surface,
wl_fixed_t sx,
wl_fixed_t sy)
{
struct wl_buffer *buffer;
struct wl_cursor_image *image;
image = cursor->images[0];
buffer = wl_cursor_image_get_buffer (image);
enter_serial = serial;
wl_pointer_set_cursor (pointer, serial,
cursor_surface,
image->hotspot_x,
image->hotspot_y);
wl_surface_attach (cursor_surface, buffer, 0, 0);
wl_surface_damage (cursor_surface, 0, 0,
image->width, image->height);
wl_surface_commit (cursor_surface);
}
static void
pointer_handle_leave (void *data,
struct wl_pointer *pointer,
uint32_t serial,
struct wl_surface *surface)
{
}
static void
pointer_handle_motion (void *data,
struct wl_pointer *pointer,
uint32_t time,
wl_fixed_t sx,
wl_fixed_t sy)
{
}
static void
pointer_handle_button (void *data,
struct wl_pointer *pointer,
uint32_t serial,
uint32_t time,
uint32_t button,
uint32_t state)
{
}
static void
pointer_handle_axis (void *data,
struct wl_pointer *pointer,
uint32_t time,
uint32_t axis,
wl_fixed_t value)
{
}
static const struct wl_pointer_listener pointer_listener = {
pointer_handle_enter,
pointer_handle_leave,
pointer_handle_motion,
pointer_handle_button,
pointer_handle_axis,
};
static void
seat_handle_capabilities (void *data,
struct wl_seat *wl_seat,
enum wl_seat_capability caps)
{
if (caps & WL_SEAT_CAPABILITY_POINTER)
{
wl_pointer = wl_seat_get_pointer (wl_seat);
wl_pointer_add_listener (wl_pointer, &pointer_listener, NULL);
}
}
static void
seat_handle_name (void *data,
struct wl_seat *seat,
const char *name)
{
}
static const struct wl_seat_listener seat_listener = {
seat_handle_capabilities,
seat_handle_name,
};
static void
handle_registry_global (void *data,
struct wl_registry *registry,
uint32_t id,
const char *interface,
uint32_t version)
{
if (strcmp (interface, "wl_seat") == 0)
{
wl_seat = wl_registry_bind (registry, id,
&wl_seat_interface,
1);
wl_seat_add_listener (wl_seat, &seat_listener, NULL);
}
}
static void
handle_registry_global_remove (void *data,
struct wl_registry *registry,
uint32_t name)
{
}
static const struct wl_registry_listener registry_listener = {
handle_registry_global,
handle_registry_global_remove
};
static void
on_sync_event (WaylandDisplay *display,
uint32_t serial)
{
if (serial == 1)
{
running = FALSE;
}
else if (serial == 0)
{
struct wl_buffer *buffer;
struct wl_cursor_image *image;
image = cursor2->images[0];
buffer = wl_cursor_image_get_buffer (image);
wl_surface_attach (cursor_surface, buffer, 0, 0);
wl_surface_damage (cursor_surface, 0, 0,
image->width, image->height);
wl_surface_commit (cursor_surface);
wl_surface_destroy (cursor_surface);
test_driver_sync_point (display->test_driver, 0, NULL);
}
}
int
main (int argc,
char **argv)
{
display = wayland_display_new (WAYLAND_DISPLAY_CAPABILITY_TEST_DRIVER);
wl_registry = wl_display_get_registry (display->display);
wl_registry_add_listener (wl_registry, &registry_listener, display);
wl_display_roundtrip (display->display);
g_signal_connect (display, "sync-event", G_CALLBACK (on_sync_event), NULL);
surface = wl_compositor_create_surface (display->compositor);
xdg_surface = xdg_wm_base_get_xdg_surface (display->xdg_wm_base, surface);
xdg_surface_add_listener (xdg_surface, &xdg_surface_listener, NULL);
xdg_toplevel = xdg_surface_get_toplevel (xdg_surface);
xdg_toplevel_add_listener (xdg_toplevel, &xdg_toplevel_listener, NULL);
cursor_surface = wl_compositor_create_surface (display->compositor);
cursor_theme = wl_cursor_theme_load (NULL, 24, display->shm);
cursor = wl_cursor_theme_get_cursor (cursor_theme, "left_ptr");
cursor2 = wl_cursor_theme_get_cursor (cursor_theme, "right_ptr");
g_assert_nonnull (cursor);
g_assert_nonnull (cursor2);
init_surface ();
wl_surface_commit (surface);
running = TRUE;
while (running)
{
if (wl_display_dispatch (display->display) == -1)
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}

6
src/tests/wayland-test-clients/meson.build
View File

@ -56,6 +56,12 @@ wayland_test_clients = [
{
'name': 'fullscreen',
},
{
'name': 'kms-cursor-hotplug-helper',
'extra_deps': [
wayland_cursor_dep,
],
},
{
'name': 'dma-buf-scanout',
'extra_deps': [

1
src/wayland/meta-cursor-sprite-wayland.h
View File

@ -25,6 +25,7 @@
#include "wayland/meta-wayland-surface.h"
#define META_TYPE_CURSOR_SPRITE_WAYLAND meta_cursor_sprite_wayland_get_type ()
META_EXPORT_TEST
G_DECLARE_FINAL_TYPE (MetaCursorSpriteWayland, meta_cursor_sprite_wayland,
META, CURSOR_SPRITE_WAYLAND, MetaCursorSprite)

6
src/wayland/meta-wayland-cursor-surface.c
View File

@ -219,6 +219,10 @@ meta_wayland_cursor_surface_dispose (GObject *object)
META_WAYLAND_CURSOR_SURFACE (object);
MetaWaylandCursorSurfacePrivate *priv =
meta_wayland_cursor_surface_get_instance_private (cursor_surface);
MetaWaylandSurface *surface =
meta_wayland_surface_role_get_surface (META_WAYLAND_SURFACE_ROLE (object));
MetaWaylandSeat *seat = surface->compositor->seat;
MetaWaylandPointer *pointer = seat->pointer;
MetaWaylandFrameCallback *cb, *next;
wl_list_for_each_safe (cb, next, &priv->frame_callbacks, link)
@ -242,6 +246,8 @@ meta_wayland_cursor_surface_dispose (GObject *object)
g_clear_object (&priv->buffer);
}
meta_wayland_pointer_update_cursor_surface (pointer);
G_OBJECT_CLASS (meta_wayland_cursor_surface_parent_class)->dispose (object);
}