Bug 302796 – [GTK] Crashes in GPUProcess::platformInitializeGPUProcess: Could not create EGL display for GPU process: no supported platform available. Aborting...

• Status: NEW
• Component: WebKitGTK

[Michael Catanzaro]

coredumpctl indicates that I had 6 GPU process crashes at 7:49 AM this morning, using Epiphany Tech Preview with WebKitGTK 2.51.1:

Wed 2025-11-19 07:49:06 CST   28891 1000   1000 SIGABRT present  /usr/libexec/webkitgtk-6.0/WebKitGPUProcess                                                                                                          1.9M
Wed 2025-11-19 07:49:11 CST   28940 1000   1000 SIGABRT present  /usr/libexec/webkitgtk-6.0/WebKitGPUProcess                                                                                                          1.9M
Wed 2025-11-19 07:49:16 CST   29036 1000   1000 SIGABRT present  /usr/libexec/webkitgtk-6.0/WebKitGPUProcess                                                                                                          1.9M
Wed 2025-11-19 07:49:27 CST   29217 1000   1000 SIGABRT present  /usr/libexec/webkitgtk-6.0/WebKitGPUProcess                                                                                                          1.9M
Wed 2025-11-19 07:49:32 CST   29363 1000   1000 SIGABRT present  /usr/libexec/webkitgtk-6.0/WebKitGPUProcess                                                                                                          1.9M
Wed 2025-11-19 07:49:33 CST   29477 1000   1000 SIGABRT present  /usr/libexec/webkitgtk-6.0/WebKitGPUProcess                                                                                                          1.9M

That is the intentional crash here:

```
void GPUProcess::platformInitializeGPUProcess(GPUProcessCreationParameters& parameters)
{
#if USE(GBM)
    WebCore::DRMDeviceManager::singleton().initializeMainDevice(WTFMove(parameters.drmDevice));

    if (auto device = WebCore::DRMDeviceManager::singleton().mainGBMDevice(WebCore::DRMDeviceManager::NodeType::Render)) {
        WebCore::PlatformDisplay::setSharedDisplay(WebCore::PlatformDisplayGBM::create(device->device()));
        return;
    }
#else
    UNUSED_PARAM(parameters);
#endif

    WTFLogAlways("Could not create EGL display for GPU process: no supported platform available. Aborting...");
    CRASH();
}
```

So, some sort of problem with GBM. I wonder if it could be related to bug #263208?

Here is my webkit://gpu debug:

{
    "Version Information": {
        "WebKit version": "WebKitGTK 2.51.1 (tarball)",
        "Operating system": "Linux 6.17.7-300.fc43.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Nov  2 15:30:09 UTC 2025 x86_64",
        "Desktop": "GNOME",
        "GStreamer version": "1.26.7 (build) GStreamer 1.26.7 (runtime)",
        "GTK version": "4.21.2 (build) 4.21.2 (runtime)"
    },
    "Display Information": {
        "Identifier": "1",
        "Type": "Wayland",
        "Screen geometry": "0,0 2560x1440",
        "Screen work area": "0,0 2560x1440",
        "Device scale": "1",
        "Depth": "24",
        "Bits per color component": "8",
        "Font Scaling DPI": "96",
        "Screen DPI": "93.10378024028846",
        "VBlank type": "DRM",
        "VBlank refresh rate": "59Hz",
        "DRM Primary Node": "/dev/dri/card1",
        "DRM Render Node": "/dev/dri/renderD128"
    },
    "API": "OpenGL ES 2 (libepoxy)",
    "Hardware Acceleration Information": {
        "Policy": "always",
        "WebGL enabled": "Yes",
        "2D canvas": "Accelerated",
        "Renderer": "DMABuf (Supported buffers: Hardware, Shared Memory)",
        "Buffer format": "DMA-BUF: XR24 (AMD_GFX10_RBPLUS,64KB_R_X,PIPE_XOR_BITS=2,PACKERS=0,DCC,DCC_MAX_COMPRESSED_BLOCK=128B,DCC_INDEPENDENT_128B,DCC_CONSTANT_ENCODE,DCC_PIPE_ALIGN) [Rendering]",
        "Native interface": "EGL",
        "GL_RENDERER": "AMD Ryzen 9 7950X 16-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.5, DRM 3.64, 6.17.7-300.fc43.x86_64)",
        "GL_VENDOR": "AMD",
        "GL_VERSION": "OpenGL ES 3.2 Mesa 25.2.6 (git-3f12436d80)",
        "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_AMD_performance_monitor 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_shader_samples_identical 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_AMD_framebuffer_multisample_advanced 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 GL_EXT_shader_clock ",
        "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_present_opaque EGL_EXT_query_reset_notification_strategy EGL_EXT_surface_compression EGL_EXT_swap_buffers_with_damage 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_base EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_KHR_swap_buffers_with_damage EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_gl_interop EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_MESA_x11_native_visual_id "
    },
    "Hardware Acceleration Information (Render process)": {
        "Platform": "Surfaceless",
        "GL_RENDERER": "AMD Ryzen 9 7950X 16-Core Processor (radeonsi, raphael_mendocino, LLVM 21.1.5, DRM 3.64, 6.17.7-300.fc43.x86_64)",
        "GL_VENDOR": "AMD",
        "GL_VERSION": "OpenGL ES 3.2 Mesa 25.2.6 (git-3f12436d80)",
        "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_AMD_performance_monitor 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_shader_samples_identical 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_AMD_framebuffer_multisample_advanced 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 GL_EXT_shader_clock ",
        "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_config_select_group EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers 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_base 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_gl_interop EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_MESA_x11_native_visual_id "
    }
}

[Michael Catanzaro]

Now I've also had a web process crash! It's in PlatformDisplayDefault::create. I see in my journal:

Nov 19 11:12:26 dreamyard org.gnome.Epiphany.Devel.desktop[625583]: MESA-LOADER: failed to open dri: /usr/lib/x86_64-linux-gnu/GL/lib/gbm/dri_gbm.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/GL/lib/gbm, suffix _gbm)
Nov 19 11:12:26 dreamyard org.gnome.Epiphany.Devel.desktop[625583]: Failed to create GBM device for DRM node: /dev/dri/renderD128: No such file or directory
Nov 19 11:12:26 dreamyard audit[625583]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=2 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=625583 comm="WebKitWebProces" exe="/usr/libexec/webkitgtk-6.0/WebKitWebProcess" sig=6 res=1
Nov 19 11:12:26 dreamyard org.gnome.Epiphany.Devel.desktop[625583]: Could not create default EGL display: EGL_BAD_PARAMETER. Aborting...

This looks very similar to bug #263208. I wonder if it could be related to https://github.com/flatpak/flatpak/issues/5570. It's hard to explain how dri_gbm.so could somehow go missing. I see it there when I run `flatpak run --command=ls org.gnome.Epiphany.Devel /usr/lib/x86_64-linux-gnu/GL/lib/gbm/`.

[Michael Catanzaro]

15 crashes so far today alone. I fear we enabled GPU process is just not ready yet.

[Claudio Saavedra]

I am hitting this (or a very similar issue) every often after enabling the IPC testing API in the IPC tests, presumably those that test IPC messages to the GPU process and need to spawn one for that purpose. I uploaded a draft MR in case someone wants to use it to debug it. Just build WPE or GTK with Debug and run LayoutTests under ipc/

https://github.com/WebKit/WebKit/pull/57865

This is the stacktrace I get:

#0  WTFCrash () at ../../../Source/WTF/wtf/Assertions.cpp:380
#1  0x00007f7f8e225da9 in WebKit::GPUProcess::platformInitializeGPUProcess (this=0x7f7f9c6e5e00 <WebKit::GPUProcess::singleton()::gpuProcess>, parameters=...)
    at ../../../Source/WebKit/GPUProcess/glib/GPUProcessGLib.cpp:56
#2  0x00007f7f8e1f0456 in WebKit::GPUProcess::initializeGPUProcess(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&)
    (this=0x7f7f9c6e5e00 <WebKit::GPUProcess::singleton()::gpuProcess>, parameters=..., completionHandler=...) at ../../../Source/WebKit/GPUProcess/GPUProcess.cpp:279
#3  0x00007f7f8cba3454 in IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}::operator()<WebKit::GPUProcessCreationParameters>(WebKit::GPUProcessCreationParameters&&) const (__closure=0x7ffcb0cd5cf0)
    at ../../../Source/WebKit/Platform/IPC/HandleMessage.h:150
#4  0x00007f7f8cbbd28d in std::__invoke_impl<void, IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}, WebKit::GPUProcessCreationParameters>(std::__invoke_other, IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}&&, WebKit::GPUProcessCreationParameters&&) (__f=...)
    at /usr/include/c++/13/bits/invoke.h:61
#5  0x00007f7f8cbb2821 in std::__invoke<IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}, WebKit::GPUProcessCreationParameters>(IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}&&, WebKit::GPUProcessCreationParameters&&) (__fn=...)
    at /usr/include/c++/13/bits/invoke.h:96
#6  0x00007f7f8cba34a3 in std::__apply_impl<IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}, std::tuple<WebKit::GPUProcessCreationParameters>, 0ul>(IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}&&, std::tuple<WebKit::GPUProcessCreationParameters>&&, std::integer_sequence<unsigned long, 0ul>) (__f=..., __t=...) at /usr/include/c++/13/tuple:2302
#7  0x00007f7f8cba34e5 in std::apply<IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}, std::tuple<WebKit::GPUProcessCreationParameters> >(IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)::{lambda((auto:1&&)...)#1}&&, std::tuple<WebKit::GPUProcessCreationParameters>&&) (__f=..., __t=...)
    at /usr/include/c++/13/tuple:2313
#8  0x00007f7f8cba355a in IPC::callMemberFunction<WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>, void ()>(WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&), std::tuple<WebKit::GPUProcessCreationParameters>&&, WTF::CompletionHandler<void ()>&&)
    (object=0x7f7f9c6e5e00 <WebKit::GPUProcess::singleton()::gpuProcess>, function=(void (WebKit::GPUProcess::*)(WebKit::GPUProcess * const, WebKit::GPUProcessCreationParameters &&, WTF::CompletionHandler<void()> &&)) 0x7f7f8e1f0242 <WebKit::GPUProcess::initializeGPUProcess(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&)>, tuple=..., completionHandler=...)
    at ../../../Source/WebKit/Platform/IPC/HandleMessage.h:147
#9  0x00007f7f8cb9acfd in IPC::handleMessageAsync<Messages::GPUProcess::InitializeGPUProcess, IPC::Connection, WebKit::GPUProcess, WebKit::GPUProcess, void (WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&)>(IPC::Connection&, IPC::Decoder&, WebKit::GPUProcess*, void (WebKit::GPUProcess::*)(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&))
    (connection=..., decoder=..., object=0x7f7f9c6e5e00 <WebKit::GPUProcess::singleton()::gpuProcess>, function=(void (WebKit::GPUProcess::*)(WebKit::GPUProcess * const, WebKit::GPUProcessCreationParameters &&, WTF::CompletionHandler<void()> &&)) 0x7f7f8e1f0242 <WebKit::GPUProcess::initializeGPUProcess(WebKit::GPUProcessCreationParameters&&, WTF::CompletionHandler<void ()>&&)>)
    at ../../../Source/WebKit/Platform/IPC/HandleMessage.h:553
#10 0x00007f7f8cb989ed in WebKit::GPUProcess::didReceiveMessage (this=0x7f7f9c6e5e00 <WebKit::GPUProcess::singleton()::gpuProcess>, connection=..., decoder=...)
    at DerivedSources/WebKit/GPUProcessMessageReceiver.cpp:106
#11 0x00007f7f8e9df51f in IPC::Connection::dispatchMessage (this=0x7f7f6b038100, decoder=...) at ../../../Source/WebKit/Platform/IPC/Connection.cpp:1410
#12 0x00007f7f8e9df859 in IPC::Connection::dispatchMessage (this=0x7f7f6b038100, message=...) at ../../../Source/WebKit/Platform/IPC/Connection.cpp:1468
#13 0x00007f7f8e9dfea7 in IPC::Connection::dispatchOneIncomingMessage (this=0x7f7f6b038100) at ../../../Source/WebKit/Platform/IPC/Connection.cpp:1542
#14 0x00007f7f8e9defe8 in operator() (__closure=0x7f7f6b0480e8) at ../../../Source/WebKit/Platform/IPC/Connection.cpp:1371
#15 0x00007f7f8ea124ae in WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(WTF::UniqueRef<IPC::Decoder>)::<lambda()>, void>::call(void) (this=0x7f7f6b0480e0) at WTF/Headers/wtf/Function.h:59
#16 0x00007f7f8c9ecad9 in WTF::Function<void ()>::operator()() const (this=0x7ffcb0cd6260) at WTF/Headers/wtf/Function.h:103
#17 0x00007f7f92a1e93e in WTF::RunLoop::performWork (this=0x7f7f6b01c110) at ../../../Source/WTF/wtf/RunLoop.cpp:145
#18 0x00007f7f92c092c4 in operator() (__closure=0x0, userData=0x7f7f6b01c110) at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:153
#19 0x00007f7f92c092ec in _FUN () at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:155
#20 0x00007f7f92c09096 in operator() (__closure=0x0, source=0x561fee814ce0, callback=0x7f7f92c092cb <_FUN(gpointer)>, userData=0x7f7f6b01c110) at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:116
#21 0x00007f7f92c09103 in _FUN () at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:119
#22 0x00007f7f7b5ec40e in ??? () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f7f7b5ec680 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f7f92c09a87 in WTF::RunLoop::runGLibMainLoopIteration (this=0x7f7f6b01c110, mayBlock=WTF::RunLoop::MayBlock::Yes) at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:191
#25 0x00007f7f92c09af6 in WTF::RunLoop::runGLibMainLoop (this=0x7f7f6b01c110) at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:200
#26 0x00007f7f92c09bbe in WTF::RunLoop::run () at ../../../Source/WTF/wtf/glib/RunLoopGLib.cpp:213
#27 0x00007f7f8e25140e in WebKit::AuxiliaryProcessMainBase<WebKit::GPUProcess, true>::run (this=0x7ffcb0cd6580, argc=3, argv=0x7ffcb0cd6748) at ../../../Source/WebKit/Shared/AuxiliaryProcessMain.h:77
#28 0x00007f7f8e24804f in WebKit::AuxiliaryProcessMain<WebKit::GPUProcessMainGLib> (argc=3, argv=0x7ffcb0cd6748) at ../../../Source/WebKit/Shared/AuxiliaryProcessMain.h:103
#29 0x00007f7f8e225fe7 in WebKit::GPUProcessMain (argc=3, argv=0x7ffcb0cd6748) at ../../../Source/WebKit/GPUProcess/glib/GPUProcessMainGLib.cpp:56
#30 0x0000561fca5057ed in main (argc=3, argv=0x7ffcb0cd6748) at ../../../Source/WebKit/GPUProcess/EntryPoint/unix/GPUProcessMain.cpp:31

[Claudio Saavedra]

So I figured out that in my case the tests were crashing due to LIBGL_ALWAYS_SOFTWARE=1 being set in the environment of WebKitTestRunner, so the DRMDevice is not initialized properly and the GPU process spawned fails to initialize as it receives a null device. Unsetting this and allowing accelerated rendering gets rid of this crash in most cases, so it's likely that the underlying issue is different.