Bug 291332 – AcceleratedSurfaceDMABuf was unable to construct a complete framebuffer

• Component: WebKitGTK
• Status: NEW

[Jan]

Created attachment 474879 [details]
Minimal Sample

I'm running in a bit of an issue with large webviews: I want to combine a webview with a gtk widgets based header seamlessly as a single "page". This works okay by putting the widgets + the webview into a scrolled window and then making the webview request the height of the loaded html content. This obviously bypasses webkitgtks internal scrolling. Now when the webview passes a certain height threshold the application simply freezes with

```
AcceleratedSurfaceDMABuf was unable to construct a complete framebuffer

(news-flash:993614): Gsk-CRITICAL **: 00:16:36.760: gsk_gl_driver_begin_frame: assertion 'self->in_frame == FALSE' failed
```

The Gsk-CRITICAL is printed over and over again until the application freezes and gets killed.

I attached a minimal sample that triggers "AcceleratedSurfaceDMABuf was unable to construct a complete framebuffer". However the application doesn't freeze and no Gsk-CRITICALs are emitted.

A workaround for now is to disable the dma-buf code path with "WEBKIT_DISABLE_DMABUF_RENDERER=1"

[Michael Catanzaro]

Can you please attach a stack trace taken with G_DEBUG=fatal-criticals?

[Jan]

I just noticed that the minimal sample defaults to x11 for me. With GDK_BACKEND=wayland I hit the Gsk-CRITICAL with the minimal sample as well.
The default Gsk Renderer for me is Vulkan. But I observed no change with GSK_RENDERER=gl or cairo.
Everything is ran inside a fedora workstation 41 toolbox on fedora silverblue 41. Here is my webkit://gpu output:

{
    "Version Information": {
        "WebKit version": "WebKitGTK 2.48.1 (tarball)",
        "Operating system": "Linux 6.13.9-200.fc41.x86_64 #1 SMP PREEMPT_DYNAMIC Sat Mar 29 01:29:31 UTC 2025 x86_64",
        "Desktop": "GNOME",
        "GStreamer version": "1.24.11 (build) GStreamer 1.24.11 (runtime)",
        "GTK version": "4.16.13 (build) 4.16.13 (runtime)"
    },
    "Display Information": {
        "Identifier": "1",
        "Type": "Wayland",
        "Screen geometry": "0,0 1920x1080",
        "Screen work area": "0,0 1920x1080",
        "Depth": "24",
        "Bits per color component": "8",
        "Font Scaling DPI": "96",
        "Screen DPI": "79.56148070193281",
        "VBlank type": "DRM",
        "VBlank refresh rate": "59Hz",
        "DRM Device": "/dev/dri/card1",
        "DRM Render Node": "/dev/dri/renderD128"
    },
    "API": "OpenGL (libepoxy)",
    "Hardware Acceleration Information": {
        "Policy": "always",
        "WebGL enabled": "Yes",
        "2D canvas": "Accelerated",
        "Renderer": "DMABuf (Supported buffers: Hardware, Shared Memory)",
        "Buffer format": "Unknown",
        "Native interface": "EGL"
    },
    "Hardware Acceleration Information (Render process)": {
        "Platform": "GBM",
        "DRM version": "amdgpu (AMD GPU) 3.61.0. 0",
        "GL_RENDERER": "AMD Radeon 780M (radeonsi, phoenix, LLVM 19.1.7, DRM 3.61, 6.13.9-200.fc41.x86_64)",
        "GL_VENDOR": "AMD",
        "GL_VERSION": "OpenGL ES 3.2 Mesa 25.0.2",
        "GL_SHADING_LANGUAGE_VERSION": "OpenGL ES GLSL ES 3.20",
        "GL_EXTENSIONS": "GL_EXT_blend_minmax GL_EXT_multi_draw_arrays GL_EXT_texture_filter_anisotropic GL_EXT_texture_compression_s3tc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_format_BGRA8888 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_mapbuffer GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_stencil8 GL_OES_texture_3D GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_half_float GL_EXT_draw_instanced GL_EXT_texture_sRGB_decode GL_OES_EGL_image GL_OES_depth_texture GL_OES_packed_depth_stencil GL_EXT_texture_type_2_10_10_10_REV GL_NV_conditional_render GL_OES_get_program_binary GL_APPLE_texture_max_level GL_EXT_discard_framebuffer GL_EXT_read_format_bgra GL_EXT_texture_storage GL_NV_pack_subimage GL_NV_texture_barrier GL_EXT_frag_depth GL_NV_fbo_color_attachments GL_OES_EGL_image_external GL_OES_EGL_sync GL_OES_vertex_array_object GL_OES_viewport_array GL_ANGLE_pack_reverse_row_order GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_EXT_occlusion_query_boolean GL_EXT_robustness GL_EXT_texture_rg GL_EXT_unpack_subimage GL_NV_draw_buffers GL_NV_read_buffer GL_NV_read_depth GL_NV_read_depth_stencil GL_NV_read_stencil GL_APPLE_sync GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_shadow_samplers GL_KHR_debug GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_NV_generate_mipmap_sRGB GL_NV_pixel_buffer_object GL_OES_depth_texture_cube_map GL_OES_required_internalformat GL_OES_surfaceless_context GL_EXT_color_buffer_float GL_EXT_debug_label GL_EXT_sRGB_write_control GL_EXT_separate_shader_objects GL_EXT_shader_group_vote GL_EXT_shader_implicit_conversions GL_EXT_shader_integer_mix GL_EXT_tessellation_point_size GL_EXT_tessellation_shader GL_ANDROID_extension_pack_es31a GL_EXT_base_instance GL_EXT_compressed_ETC1_RGB8_sub_texture GL_EXT_copy_image GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_gpu_shader5 GL_EXT_multi_draw_indirect GL_EXT_polygon_offset_clamp GL_EXT_primitive_bounding_box GL_EXT_render_snorm GL_EXT_shader_io_blocks GL_EXT_texture_border_clamp GL_EXT_texture_buffer GL_EXT_texture_cube_map_array GL_EXT_texture_norm16 GL_EXT_texture_view GL_KHR_blend_equation_advanced GL_KHR_context_flush_control GL_KHR_robust_buffer_access_behavior GL_NV_image_formats GL_NV_shader_noperspective_interpolation GL_OES_copy_image GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_gpu_shader5 GL_OES_primitive_bounding_box GL_OES_sample_shading GL_OES_sample_variables GL_OES_shader_io_blocks GL_OES_shader_multisample_interpolation GL_OES_tessellation_point_size GL_OES_tessellation_shader GL_OES_texture_border_clamp GL_OES_texture_buffer GL_OES_texture_cube_map_array GL_OES_texture_stencil8 GL_OES_texture_storage_multisample_2d_array GL_OES_texture_view GL_EXT_blend_func_extended GL_EXT_buffer_storage GL_EXT_float_blend GL_EXT_geometry_point_size GL_EXT_geometry_shader GL_EXT_texture_filter_minmax GL_EXT_texture_sRGB_R8 GL_EXT_texture_sRGB_RG8 GL_KHR_no_error GL_KHR_texture_compression_astc_sliced_3d GL_OES_EGL_image_external_essl3 GL_OES_geometry_point_size GL_OES_geometry_shader GL_OES_shader_image_atomic GL_EXT_clear_texture GL_EXT_clip_cull_distance GL_EXT_conservative_depth GL_EXT_disjoint_timer_query GL_EXT_texture_compression_s3tc_srgb GL_EXT_window_rectangles GL_MESA_shader_integer_functions GL_EXT_clip_control GL_EXT_color_buffer_half_float GL_EXT_memory_object GL_EXT_memory_object_fd GL_EXT_semaphore GL_EXT_semaphore_fd GL_EXT_texture_compression_bptc GL_EXT_texture_mirror_clamp_to_edge GL_KHR_parallel_shader_compile GL_NV_alpha_to_coverage_dither_control GL_EXT_EGL_image_storage GL_EXT_texture_shadow_lod GL_INTEL_blackhole_render GL_MESA_framebuffer_flip_y GL_NV_compute_shader_derivatives GL_EXT_demote_to_helper_invocation GL_EXT_depth_clamp GL_EXT_texture_query_lod GL_KHR_shader_subgroup GL_MESA_sampler_objects GL_EXT_EGL_image_storage_compression GL_EXT_texture_storage_compression GL_MESA_bgra GL_MESA_texture_const_bandwidth ",
        "EGL_VERSION": "1.5",
        "EGL_VENDOR": "Mesa Project",
        "EGL_EXTENSIONS": "EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_device EGL_EXT_explicit_device EGL_EXT_platform_wayland EGL_KHR_platform_wayland EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_EXT_platform_xcb EGL_MESA_platform_gbm EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless EGL_ANDROID_blob_cache EGL_ANDROID_native_fence_sync EGL_EXT_buffer_age EGL_EXT_config_select_group EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_EXT_protected_surface EGL_EXT_query_reset_notification_strategy EGL_EXT_surface_compression EGL_IMG_context_priority EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_context_flush_control EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_gl_interop EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_MESA_x11_native_visual_id EGL_WL_bind_wayland_display "
    }
}

And here the backtrace

#0  _g_log_abort (breakpoint=<optimized out>) at ../glib/gmessages.c:426
#1  g_logv (log_domain=0x7ffff2a8b01c "Gsk", log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>, args=args@entry=0x7fffffffb390) at ../glib/gmessages.c:1273
#2  0x00007fffeffaa2e3 in g_log (log_domain=<optimized out>, log_level=<optimized out>, format=<optimized out>) at ../glib/gmessages.c:1315
#3  0x00007ffff291eb5c in gsk_gl_renderer_render_texture (renderer=renderer@entry=0x9ca1e0, root=root@entry=0x13e1ee0, viewport=viewport@entry=0x7fffffffb600)
    at ../gsk/gl/gskglrenderer.c:431
#4  0x00007ffff291f260 in gsk_gl_renderer_render_texture (renderer=0x9ca1e0, root=0x13e1ee0, viewport=0x7fffffffb710) at ../gsk/gl/gskglrenderer.c:390
#5  0x00007ffff28f0cc2 in gsk_renderer_render_texture (renderer=0x9ca1e0, root=0x13e1ee0, viewport=0x7fffffffb710) at ../gsk/gskrenderer.c:430

#6  0x00007ffff291d304 in gsk_gl_renderer_dmabuf_downloader_download
    (downloader_=0x9ca1e0, texture=<optimized out>, format=GDK_MEMORY_B8G8R8X8, color_state=0x7ffff2ce0000 <gdk_default_color_states>, data=0x7ffddcd80010 "", stride=4000)
    at ../gsk/gl/gskglrenderer.c:124
#7  0x00007ffff28aa902 in gdk_dmabuf_downloader_download
    (self=<optimized out>, texture=0x13e13e0, format=GDK_MEMORY_B8G8R8X8, color_state=0x7ffff2ce0000 <gdk_default_color_states>, data=0x7ffddcd80010 "", stride=<optimized out>)
    at ../gdk/gdkdmabufdownloader.c:47
#8  gdk_dmabuf_texture_invoke_callback (data=0x7fffffffb830) at ../gdk/gdkdmabuftexture.c:111
#9  0x00007fffeffa6b15 in g_main_context_invoke_full (context=0x456ef0, priority=0, function=0x7ffff28aa880 <gdk_dmabuf_texture_invoke_callback>, data=0x7fffffffb830, notify=0x0)
    at ../glib/gmain.c:6496
#10 0x00007fffeffa6c34 in g_main_context_invoke (context=<optimized out>, function=<optimized out>, data=<optimized out>) at ../glib/gmain.c:6456
#11 0x00007ffff28af2a7 in gdk_dmabuf_texture_download (texture=<optimized out>, format=<optimized out>, color_state=<optimized out>, data=<optimized out>, stride=<optimized out>)
    at ../gdk/gdkdmabuftexture.c:141
#12 0x00007ffff28d101c in gdk_texture_do_download (texture=0x13e13e0, format=<optimized out>, color_state=<optimized out>, data=0x7ffddcd80010 "", stride=4000) at ../gdk/gdktexture.c:840
#13 gdk_memory_texture_from_texture (texture=0x13e13e0) at ../gdk/gdkmemorytexture.c:265
#14 0x00007ffff2938026 in gsk_gl_driver_add_texture_slices (self=0x8eeb80, texture=0x13e13e0, ensure_mipmap=0, out_slices=0x7fffffffbb00, out_n_slices=0x7fffffffbafc)
    at ../gsk/gl/gskgldriver.c:1483
#15 0x00007ffff2948e19 in gsk_gl_driver_slice_texture (self=<optimized out>, texture=<optimized out>, ensure_mipmap=0, out_slices=0x7fffffffbb00, out_n_slices=0x7fffffffbafc)
    at ../gsk/gl/gskgldriverprivate.h:257
#16 gsk_gl_render_job_visit_texture (job=job@entry=0x13e9350, texture=<optimized out>, bounds=bounds@entry=0x93dfac) at ../gsk/gl/gskglrenderjob.c:3729
#17 0x00007ffff294aff1 in gsk_gl_render_job_visit_texture_node (job=0x13e9350, node=0x93dfa0) at ../gsk/gl/gskglrenderjob.c:3776
#18 gsk_gl_render_job_visit_node (job=0x13e9350, node=0x93dfa0) at ../gsk/gl/gskglrenderjob.c:4233
#19 0x00007ffff291f017 in gsk_gl_render_job_render_flipped (job=0x13e9350, root=0x93dfa0) at ../gsk/gl/gskglrenderjob.c:4531
#20 gsk_gl_renderer_render_texture (renderer=renderer@entry=0x9ca1e0, root=root@entry=0x93dfa0, viewport=viewport@entry=0x7fffffffbf30) at ../gsk/gl/gskglrenderer.c:433
#21 0x00007ffff291f260 in gsk_gl_renderer_render_texture (renderer=0x9ca1e0, root=0x93dfa0, viewport=0x7fffffffc040) at ../gsk/gl/gskglrenderer.c:390
#22 0x00007ffff28f0cc2 in gsk_renderer_render_texture (renderer=0x9ca1e0, root=0x93dfa0, viewport=0x7fffffffc040) at ../gsk/gskrenderer.c:430
#23 0x00007ffff291d304 in gsk_gl_renderer_dmabuf_downloader_download
    (downloader_=0x9ca1e0, texture=<optimized out>, format=GDK_MEMORY_B8G8R8X8, color_state=0x7ffff2ce0000 <gdk_default_color_states>, data=0x7fff00ebd010 "", stride=4000)
    at ../gsk/gl/gskglrenderer.c:124
#24 0x00007ffff28aa902 in gdk_dmabuf_downloader_download
    (self=<optimized out>, texture=0x13e13e0, format=GDK_MEMORY_B8G8R8X8, color_state=0x7ffff2ce0000 <gdk_default_color_states>, data=0x7fff00ebd010 "", stride=<optimized out>)
    at ../gdk/gdkdmabufdownloader.c:47
#25 gdk_dmabuf_texture_invoke_callback (data=0x7fffffffc160) at ../gdk/gdkdmabuftexture.c:111
#26 0x00007fffeffa6b15 in g_main_context_invoke_full (context=0x456ef0, priority=0, function=0x7ffff28aa880 <gdk_dmabuf_texture_invoke_callback>, data=0x7fffffffc160, notify=0x0)
    at ../glib/gmain.c:6496
#27 0x00007fffeffa6c34 in g_main_context_invoke (context=<optimized out>, function=<optimized out>, data=<optimized out>) at ../glib/gmain.c:6456
#28 0x00007ffff28af2a7 in gdk_dmabuf_texture_download (texture=<optimized out>, format=<optimized out>, color_state=<optimized out>, data=<optimized out>, stride=<optimized out>)
    at ../gdk/gdkdmabuftexture.c:141
#29 0x00007ffff28d101c in gdk_texture_do_download (texture=0x13e13e0, format=<optimized out>, color_state=<optimized out>, data=0x7fff00ebd010 "", stride=4000) at ../gdk/gdktexture.c:840
#30 gdk_memory_texture_from_texture (texture=0x13e13e0) at ../gdk/gdkmemorytexture.c:265
#31 0x00007ffff295e2ec in gsk_gpu_node_processor_draw_texture_tiles (self=0x7fffffffc340, texture_bounds=0x13e14cc, texture=0x13e13e0, scaling_filter=GSK_SCALING_FILTER_LINEAR)
    at ../gsk/gpu/gskgpunodeprocessor.c:2006
#32 gsk_gpu_get_texture_tiles_as_image
    (frame=<optimized out>, ccs=<optimized out>, clip_bounds=clip_bounds@entry=0x7fffffffc4a0, scale=scale@entry=0x7fffffffcdb0, texture_bounds=texture_bounds@entry=0x13e14cc, texture=texture@entry=0x13e13e0, scaling_filter=GSK_SCALING_FILTER_LINEAR) at ../gsk/gpu/gskgpunodeprocessor.c:2081
#33 0x00007ffff295e790 in gsk_gpu_node_processor_add_texture_node (self=0x7fffffffcd40, node=0x13e14c0) at ../gsk/gpu/gskgpunodeprocessor.c:2113
#34 0x00007ffff296b95f in gsk_gpu_node_processor_add_first_node (self=0x7fffffffcd40, info=0x7fffffffcd00, node=0x13e14c0) at ../gsk/gpu/gskgpunodeprocessor.c:4090
#35 0x00007ffff295af76 in gsk_gpu_node_processor_add_first_node_clipped (self=0x7fffffffcd40, info=0x7fffffffcd00, clip=0x9595ec, node=0x13e14c0) at ../gsk/gpu/gskgpunodeprocessor.c:1224
#36 0x00007ffff296b91b in gsk_gpu_node_processor_add_first_node (self=0x7fffffffcd40, info=0x7fffffffcd00, node=0x9595e0) at ../gsk/gpu/gskgpunodeprocessor.c:4083
#37 0x00007ffff295d0fa in gsk_gpu_node_processor_add_first_transform_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=node@entry=0x959620)
    at ../gsk/gpu/gskgpunodeprocessor.c:1615
#38 0x00007ffff296b91b in gsk_gpu_node_processor_add_first_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=0x959620) at ../gsk/gpu/gskgpunodeprocessor.c:4083
#39 0x00007ffff296bba0 in gsk_gpu_node_processor_add_first_container_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=node@entry=0x9596a0)
    at ../gsk/gpu/gskgpunodeprocessor.c:3725
#40 0x00007ffff296b91b in gsk_gpu_node_processor_add_first_node (self=0x7fffffffcd40, info=0x7fffffffcd00, node=0x9596a0) at ../gsk/gpu/gskgpunodeprocessor.c:4083
#41 0x00007ffff295af76 in gsk_gpu_node_processor_add_first_node_clipped (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, clip=clip@entry=0x7fffffffc910, node=0x9596a0)
    at ../gsk/gpu/gskgpunodeprocessor.c:1224
#42 0x00007ffff295b09a in gsk_gpu_node_processor_add_first_rounded_clip_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=node@entry=0x9596f0)
    at ../gsk/gpu/gskgpunodeprocessor.c:1391
#43 0x00007ffff296b91b in gsk_gpu_node_processor_add_first_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=0x9596f0) at ../gsk/gpu/gskgpunodeprocessor.c:4083
#44 0x00007ffff296bba0 in gsk_gpu_node_processor_add_first_container_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=node@entry=0x959750)
    at ../gsk/gpu/gskgpunodeprocessor.c:3725
#45 0x00007ffff296b91b in gsk_gpu_node_processor_add_first_node (self=0x7fffffffcd40, info=0x7fffffffcd00, node=0x959750) at ../gsk/gpu/gskgpunodeprocessor.c:4083
#46 0x00007ffff295d0fa in gsk_gpu_node_processor_add_first_transform_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=node@entry=0x9597a0)
    at ../gsk/gpu/gskgpunodeprocessor.c:1615
#47 0x00007ffff296b91b in gsk_gpu_node_processor_add_first_node (self=self@entry=0x7fffffffcd40, info=info@entry=0x7fffffffcd00, node=node@entry=0x9597a0)
    at ../gsk/gpu/gskgpunodeprocessor.c:4083
#48 0x00007ffff296d62c in gsk_gpu_node_processor_render (self=0x7fffffffcd40, target=0x8b4c30, clip=0x959b90, node=0x9597a0, pass_type=GSK_RENDER_PASS_PRESENT)
    at ../gsk/gpu/gskgpunodeprocessor.c:4220
#49 gsk_gpu_node_processor_process
    (frame=frame@entry=0x932d70, target=target@entry=0x8b4c30, target_color_state=target_color_state@entry=0x7ffff2ce0000 <gdk_default_color_states>, clip=clip@entry=0x959b90, node=node@entry=0x9597a0, viewport=viewport@entry=0x7fffffffcec0, pass_type=GSK_RENDER_PASS_PRESENT) at ../gsk/gpu/gskgpunodeprocessor.c:4344
#50 0x00007ffff296e830 in gsk_gpu_frame_record
    (self=0x932d70, timestamp=43143685097, target=0x8b4c30, target_color_state=0x7ffff2ce0000 <gdk_default_color_states>, clip=0x959b90, node=0x9597a0, viewport=0x7fffffffcec0, texture=0x0) at ../gsk/gpu/gskgpuframe.c:671
#51 gsk_gpu_frame_render
    (self=0x932d70, timestamp=43143685097, target=0x8b4c30, target_color_state=0x7ffff2ce0000 <gdk_default_color_states>, clip=0x959b90, node=0x9597a0, viewport=0x7fffffffcec0, texture=0x0) at ../gsk/gpu/gskgpuframe.c:722
#52 gsk_gpu_renderer_render (renderer=<optimized out>, root=0x9597a0, region=<optimized out>) at ../gsk/gpu/gskgpurenderer.c:455
#53 0x00007ffff28f56b9 in gsk_renderer_render (renderer=<optimized out>, root=<optimized out>, region=<optimized out>) at ../gsk/gskrenderer.c:495
#54 0x00007ffff26d3844 in gtk_widget_render (widget=<optimized out>, surface=<optimized out>, region=0x9caba0) at ../gtk/gtkwidget.c:12019
#55 0x00007ffff26d4ae9 in surface_render () at ../gtk/gtkwindow.c:4725
#60 0x00007ffff00db733 in <emit signal '???' on instance ???> (instance=instance@entry=0x8a4210, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3582
    #56 0x00007ffff2842149 in _gdk_marshal_BOOLEAN__BOXEDv
    (closure=0x8eb290, return_value=0x7fffffffd2f0, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x89aaa0)
    at gdk/gdkmarshalers.c:130
    #57 0x00007ffff00db55c in _g_closure_invoke_va (closure=0x8eb290, return_value=0x7fffffffd2f0, instance=0x8a4210, args=0x7fffffffd3e0, n_params=1, param_types=0x89aaa0)
    at ../gobject/gclosure.c:896
    #58 signal_emit_valist_unlocked (instance=instance@entry=0x8a4210, signal_id=signal_id@entry=229, detail=detail@entry=0, var_args=var_args@entry=0x7fffffffd3e0)
    at ../gobject/gsignal.c:3423
    #59 0x00007ffff00db671 in g_signal_emit_valist (instance=0x8a4210, signal_id=229, detail=0, var_args=var_args@entry=0x7fffffffd3e0) at ../gobject/gsignal.c:3262
#61 0x00007ffff28d5599 in gdk_surface_paint_on_clock (clock=<optimized out>, data=0x8a4210) at ../gdk/gdksurface.c:1442
#62 gdk_surface_paint_on_clock (clock=<optimized out>, data=0x8a4210) at ../gdk/gdksurface.c:1418
#66 0x00007ffff00db733 in <emit signal '???' on instance ???> (instance=instance@entry=0x8a4000, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3582
    #63 0x00007ffff00db55c in _g_closure_invoke_va (closure=0x8a5190, return_value=0x0, instance=0x8a4000, args=0x7fffffffd740, n_params=0, param_types=0x0) at ../gobject/gclosure.c:896
    #64 signal_emit_valist_unlocked (instance=instance@entry=0x8a4000, signal_id=signal_id@entry=238, detail=detail@entry=0, var_args=var_args@entry=0x7fffffffd740)
    at ../gobject/gsignal.c:3423
    #65 0x00007ffff00db671 in g_signal_emit_valist (instance=0x8a4000, signal_id=238, detail=0, var_args=var_args@entry=0x7fffffffd740) at ../gobject/gsignal.c:3262
#67 0x00007ffff28b778d in _gdk_frame_clock_emit_paint (frame_clock=0x8a4000) at ../gdk/gdkframeclock.c:736
#68 gdk_frame_clock_paint_idle (data=data@entry=0x8a4000) at ../gdk/gdkframeclockidle.c:634
#69 0x00007fffeffaa519 in g_timeout_dispatch (source=0x9cf280, callback=0x7ffff28b70b0 <gdk_frame_clock_paint_idle>, user_data=0x8a4000) at ../glib/gmain.c:5070
#70 0x00007fffeffa428c in g_main_dispatch (context=0x456ef0) at ../glib/gmain.c:3357
#71 g_main_context_dispatch_unlocked (context=0x456ef0) at ../glib/gmain.c:4208
#72 0x00007ffff00048b8 in g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x456ef0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at ../glib/gmain.c:4273
#73 0x00007fffeffa5783 in g_main_context_iteration (context=context@entry=0x456ef0, may_block=may_block@entry=1) at ../glib/gmain.c:4338
#74 0x00007ffff1f67e0d in g_application_run (application=0x454400, argc=<optimized out>, argv=0x7fffffffdbe8) at ../gio/gapplication.c:2715
#75 0x0000000000401494 in main (argc=1, argv=0x7fffffffdbe8) at main.c:116