Seeing Firefox freeze in the last few builds shortly after startup. This does not occur in a fresh profile, but persists after profile refresh. This also seems to migrate across profiles via Firefox Sync to other profiles. mozregression: 10:15.09 INFO: Narrowed inbound regression window from [ce783284, c895888b] (4 builds) to [d7a0a0e0, c895888b] (2 builds) (~1 steps left) 10:15.09 INFO: No more inbound revisions, bisection finished. 10:15.09 INFO: Last good revision: d7a0a0e0173e23074808c47db4c9178e8f50708a 10:15.09 INFO: First bad revision: c895888bdddc97e36675e49844e7c115e0d6cc12 10:15.09 INFO: Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=d7a0a0e0173e23074808c47db4c9178e8f50708a&tochange=c895888bdddc97e36675e49844e7c115e0d6cc12 about:support Application Basics ------------------ Name: Firefox Version: 64.0a1 Build ID: 20181017101626 Update Channel: nightly User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0 OS: Linux 4.18.0-10-generic Multiprocess Windows: 1/1 (Enabled by default) Web Content Processes: 4/8 Enterprise Policies: Inactive Google Key: Found Mozilla Location Service Key: Found Safe Mode: false Crash Reports for the Last 3 Days --------------------------------- All Crash Reports Nightly Features -------------------------------------- Name: Firefox Screenshots Version: 35.0.0 ID: screenshots@mozilla.org Name: Form Autofill Version: 1.0 ID: formautofill@mozilla.org Name: Web Compat Version: 2.0.1 ID: webcompat@mozilla.org Name: WebCompat Reporter Version: 1.1.0 ID: webcompat-reporter@mozilla.org Extensions ---------- Name: Always Right Version: 2.0.7 Enabled: true ID: jid0-SzimoL45Ib8OddgoUBG0buQmjec@jetpack Name: Amazon Container Version: 1.0.0 Enabled: true ID: @contain-amazon Name: Bitwarden - Free Password Manager Version: 1.33.3 Enabled: true ID: {446900e4-71c2-419f-a6a7-df9c091e268b} Name: Cookie AutoDelete Version: 2.2.0 Enabled: true ID: CookieAutoDelete@kennydo.com Name: Don't Fuck With Paste Version: 2.3.1 Enabled: true ID: DontFuckWithPaste@raim.ist Name: Don't touch my tabs! 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false ID: @contain-facebook Name: Facebook Political Ad Collector Version: 1.6.15 Enabled: false ID: {b73c39bb-a086-4964-8091-672c3dcf1bc9} Name: Fake News Detector Version: 0.30 Enabled: false ID: {c86a2f84-c0e0-49fd-b29c-2bfe62300612} Name: GNOME Shell integration Version: 10.1 Enabled: false ID: chrome-gnome-shell@gnome.org Name: google-no-tracking-url Version: 3.0.0 Enabled: false ID: jid1-zUrvDCat3xoDSQ@jetpack Name: History AutoDelete Version: 2.0.2 Enabled: false ID: {7e79d10d-9667-4d38-838d-471281c568c3} Name: KeePass Tusk - Password Access and Autofill Version: 2018.9.27 Enabled: false ID: brandon@subdavis.com Name: Make Medium Readable Again Version: 1.5.1 Enabled: false ID: {28d1ed97-5ff6-432b-a26d-61896fe2cbed} Name: Media Panel Version: 2.5 Enabled: false ID: {68d048f4-9449-4c97-8425-6dac7f743b14} Name: Neat URL Version: 4.1.5 Enabled: false ID: neaturl@hugsmile.eu Name: Owl - For comfortable reading Version: 2.2.7 Enabled: false ID: @owl-comfortable-reading-addon Name: Play/Pause Version: 2.0.3 Enabled: false ID: @play-pause Name: Privacy Possum Version: 2018.8.31 Enabled: false ID: woop-NoopscooPsnSXQ@jetpack Name: Pulsarr Version: 2.1 Enabled: false ID: {30ae3965-2bf6-459a-9ea5-01b4ae030dcc} Name: Stylus Version: 1.4.22 Enabled: false ID: {7a7a4a92-a2a0-41d1-9fd7-1e92480d612d} Name: Tabby Cat Version: 0.995 Enabled: false ID: {f7f203e0-9d1d-4557-891f-9865877c5b48} Name: Toggle Pin Tab Version: 1.0.0 Enabled: false ID: {0ccbb198-ca03-4b1c-bc9c-cd0de758239d} Name: Torrent Control Version: 0.2.5 Enabled: false ID: {e6e36c9a-8323-446c-b720-a176017e38ff} Name: Wayback Machine Version: 1.8.6 Enabled: false ID: wayback_machine@mozilla.org Name: WebCompat to Bugzilla Version: 1.3.1 Enabled: false ID: {d49639c5-d6b1-4f1e-8975-645f31c13309} Name: Zoom Page WE Version: 12.0 Enabled: false ID: zoompage-we@DW-dev Security Software ----------------- Type: Type: Type: Graphics -------- Features Compositing: Basic Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled WebGL 1 Driver WSI Info: GLX 1.4 GLX_VENDOR(client): Mesa Project and SGI GLX_VENDOR(server): SGI Extensions: GLX_ARB_create_context GLX_ARB_create_context_profile GLX_ARB_create_context_robustness GLX_ARB_fbconfig_float GLX_ARB_framebuffer_sRGB GLX_ARB_get_proc_address GLX_ARB_multisample GLX_EXT_buffer_age GLX_EXT_create_context_es2_profile GLX_EXT_create_context_es_profile GLX_EXT_fbconfig_packed_float GLX_EXT_framebuffer_sRGB GLX_EXT_import_context GLX_EXT_texture_from_pixmap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_INTEL_swap_event GLX_MESA_copy_sub_buffer GLX_MESA_query_renderer GLX_MESA_swap_control GLX_OML_swap_method GLX_OML_sync_control GLX_SGIS_multisample GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGIX_visual_select_group GLX_SGI_make_current_read GLX_SGI_swap_control GLX_SGI_video_sync WebGL 1 Driver Renderer: Intel Open Source Technology Center -- Mesa DRI Intel(R) HD Graphics 630 (Kaby Lake GT2) WebGL 1 Driver Version: 3.0 Mesa 18.2.2 WebGL 1 Driver Extensions: GL_3DFX_texture_compression_FXT1 GL_AMD_conservative_depth GL_AMD_draw_buffers_blend GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_object_purgeable GL_APPLE_packed_pixels GL_ARB_ES2_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compressed_texture_pixel_storage GL_ARB_compute_shader GL_ARB_conditional_render_inverted GL_ARB_conservative_depth GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_indirect GL_ARB_draw_instanced GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shading_language_420pack GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_filter_anisotropic GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_transpose_matrix GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_window_pos GL_ATI_blend_equation_separate GL_ATI_draw_buffers GL_ATI_separate_stencil GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_compiled_vertex_array GL_EXT_copy_texture GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_gpu_program_parameters GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shader_framebuffer_fetch GL_EXT_shader_framebuffer_fetch_non_coherent GL_EXT_shader_integer_mix GL_EXT_shader_samples_identical GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_subtexture GL_EXT_texture GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_object GL_EXT_texture_rectangle GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_IBM_multimode_draw_arrays GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_INGR_blend_func_separate GL_INTEL_performance_query GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_MESA_pack_invert GL_MESA_shader_integer_functions GL_MESA_texture_signed_rgba GL_MESA_window_pos GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_fog_distance GL_NV_light_max_exponent GL_NV_packed_depth_stencil GL_NV_primitive_restart GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_env_combine4 GL_NV_texture_rectangle GL_OES_EGL_image GL_OES_read_format GL_S3_s3tc GL_SGIS_generate_mipmap GL_SGIS_texture_border_clamp GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_SUN_multi_draw_arrays WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL 2 Driver WSI Info: GLX 1.4 GLX_VENDOR(client): Mesa Project and SGI GLX_VENDOR(server): SGI Extensions: GLX_ARB_create_context GLX_ARB_create_context_profile GLX_ARB_create_context_robustness GLX_ARB_fbconfig_float GLX_ARB_framebuffer_sRGB GLX_ARB_get_proc_address GLX_ARB_multisample GLX_EXT_buffer_age GLX_EXT_create_context_es2_profile GLX_EXT_create_context_es_profile GLX_EXT_fbconfig_packed_float GLX_EXT_framebuffer_sRGB GLX_EXT_import_context GLX_EXT_texture_from_pixmap GLX_EXT_visual_info GLX_EXT_visual_rating GLX_INTEL_swap_event GLX_MESA_copy_sub_buffer GLX_MESA_query_renderer GLX_MESA_swap_control GLX_OML_swap_method GLX_OML_sync_control GLX_SGIS_multisample GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGIX_visual_select_group GLX_SGI_make_current_read GLX_SGI_swap_control GLX_SGI_video_sync WebGL 2 Driver Renderer: Intel Open Source Technology Center -- Mesa DRI Intel(R) HD Graphics 630 (Kaby Lake GT2) WebGL 2 Driver Version: 4.5 (Core Profile) Mesa 18.2.2 WebGL 2 Driver Extensions: GL_3DFX_texture_compression_FXT1 GL_AMD_conservative_depth GL_AMD_draw_buffers_blend GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_AMD_vertex_shader_layer GL_AMD_vertex_shader_viewport_index GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_object_purgeable GL_ARB_ES2_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_compressed_texture_pixel_storage GL_ARB_compute_shader GL_ARB_conditional_render_inverted GL_ARB_conservative_depth GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_indirect GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_occlusion_query2 GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_packing GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map_array GL_ARB_texture_filter_anisotropic GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_64bit GL_ARB_vertex_attrib_binding GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev 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GL_INTEL_conservative_rasterization GL_INTEL_performance_query GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_MESA_pack_invert GL_MESA_shader_integer_functions GL_MESA_texture_signed_rgba GL_NV_conditional_render GL_NV_depth_clamp GL_NV_packed_depth_stencil GL_NV_texture_barrier GL_OES_EGL_image GL_S3_s3tc WebGL 2 Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context Off Main Thread Painting Enabled: true Off Main Thread Painting Worker Count: 4 GPU #1 Active: Yes Description: Intel Open Source Technology Center -- Mesa DRI 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Feels like something that would happen once Sync starts touching the credit card storage. I'll investigate.

Does this only happen to Linux? Do we know if libsecret is used on that distro or not?

I have libsecret installed: libsecret-1-0/cosmic 0.18.6-3 on Ubuntu cosmic. I haven't tried my profile in another OS yet.

I can't reproduce this bug on an Ubuntu 18.04.1 LTS with either a local build or binary from nightly.mozilla.org. Although I am trying this out by testing adding/removing credit cards on a new profile, which is not something you'd described. So by "freeze", did Firefox become unusable to you, or it had just frozen for a few seconds? I would assume the more accurate way to reproduce this bug would be 1) download a Nightly before bug 1486954 and add some credit card records 2) upgrades to the current Nightly 3) try to trigger credit card records update by opening up the credit card management dialog ? I can do that later sometimes.

I loaded the freezing profile just now and checked about:preferences to see if I had any saved credit cards. As far as I was able to see, the credit card dialog was empty, so I don't think I have any saved credit cards. It is possible I had some in the past and removed them -- I don't know. When Firefox freezes here, it is frozen -- not for a few seconds, but for good. Browser UI nor content responds to mouse clicks or keyboard shortcuts. I am using the binaries from nightly.mozilla.org FWIW. Happy to do additional troubleshooting steps, but as I mentioned in comment 0, this issue appears in safe mode and persists after a profile refresh, and freezes within 20-30 (maximum) of Firefox launching with the offending profile. I took the hint and set up a new Firefox profile (restoring my sessionstore file) without using Firefox Sync with the latest nightly with no issue. Where are credit cards stored in the profile? Perhaps I can delete the file to see if the issue persists.

No idea how much this will help (if at all), but I triggered a crash based on instructions here: https://developer.mozilla.org/en-US/docs/Mozilla/How_to_report_a_hung_Firefox and reported crash id 86ae958f-7991-4d09-96ca-2f0cb0181017 https://crash-stats.mozilla.com/report/index/86ae958f-7991-4d09-96ca-2f0cb0181017

Oh, one thing I noticed is that while Firefox is non-responsive to user input when it freezes here, text input cursors continue to blink -- like the one on https://accounts.firefox.com/signin?service=sync&context=fx_desktop_v3&entrypoint=menupanel

Thank you so much for diving into it! The information is very useful. (In reply to Asif Youssuff from comment #5) > Where are credit cards stored in the profile? Perhaps I can delete the file > to see if the issue persists. It is stored in ./autofill-profiles.json. You may try to delete it so it would not trigger a freeze. Do you have master password set? In bug 1486954 we explicitly decided to drop credit card records for nightly users if the master password is set. That would explain why no credit cards were saved in the management dialog. (In reply to Asif Youssuff from comment #6) > https://crash-stats.mozilla.com/report/index/86ae958f-7991-4d09-96ca- > 2f0cb0181017 The crash is very useful. Looking at is I can see it happens when OSKeyStore::GetIsNSSKeyStore(bool*) calls into libpthread. Franziskus, you might have better luck reproduce this error than I do. Let me know if you can already see the cause.

These are where JS calls into the method. https://searchfox.org/mozilla-central/rev/eef79962ba73f7759fd74da658f6e5ceae0fc730/browser/extensions/formautofill/OSKeyStore.jsm#71,134 We must have hit the migration code path for other JS modules to call into OSKeyStore, if I am not mistaken.

> It is stored in ./autofill-profiles.json. You may try to delete it so it would not trigger a freeze. I deleted the file (and backed it up just in case we need to trigger the bug again) and Firefox no longer freezes for me shortly after startup. > Do you have master password set? In bug 1486954 we explicitly decided to drop credit card records for nightly users if the master password is set. I don't, and while I have in the past, I don't know that I have in this profile (given profile refreshes). For what it is worth, I opened autofill-profiles.json in a text editor, and there is definitely (encrypted) credit card records in there, even though they don't show up in the management dialog in the browser. I haven't modified this file or even opened it previously (in case it somehow got corrupted via locking issues or something).

Fixed by backout: https://hg.mozilla.org/mozilla-central/rev/831b8aa6281e

Backing this out causes bustage for all OSs on Nightly-only due to a data migration to different encryption… it would have been better to disable credit card autofill for Linux users IMO.

Re-opening as we need to fix this before re-enabling on Linux. Tim, when you tried to repro did you have Sync setup? It's probably required. Asif, can you run the following in the Browser Console of a fresh Nightly and post the result: > Cc["@mozilla.org/security/oskeystore;1"].getService(Ci.nsIOSKeyStore).isNSSKeyStore Can you also test in an affected Nightly and see if setting the pref "extensions.formautofill.creditCards.available" (in prefs.js of your profile directory) to false fixes the problem?

(In reply to Matthew N. [:MattN] (PM me if requests are blocking you) from comment #13) > Tim, when you tried to repro did you have Sync setup? It's probably required. No, I assume opening up the credit card management dialog will go through the same code path.

> Cc["@mozilla.org/security/oskeystore;1"].getService(Ci.nsIOSKeyStore).isNSSKeyStore results in ReferenceError: Cc is not defined > extensions.formautofill.creditCards.available setting this to false still causes Firefox to freeze.

Oops, did the > Cc["@mozilla.org/security/oskeystore;1"].getService(Ci.nsIOSKeyStore).isNSSKeyStore wrong initially. It returns with `true`.

(In reply to Tim Guan-tin Chien [:timdream] (please needinfo) from comment #14) > (In reply to Matthew N. [:MattN] (PM me if requests are blocking you) from > comment #13) > > Tim, when you tried to repro did you have Sync setup? It's probably required. > > No, I assume opening up the credit card management dialog will go through > the same code path. My one theory is that the hang is from Sync repeatedly trying to encrypt or decrypt a record. From the about:support data it looks like Sync was setup (In reply to Asif Youssuff from comment #15) > > extensions.formautofill.creditCards.available > > setting this to false still causes Firefox to freeze. Hmm… that's unfortunate… Tim is making a build of Firefox for you to test that pref in combination with a code change. Can you add the following to your prefs.js file and then start Firefox from the command line so we can see the console output: user_pref("extensions.formautofill.loglevel, "Debug"); Then you can attach the console output here. (In reply to Asif Youssuff from comment #16) > Oops, did the > > > Cc["@mozilla.org/security/oskeystore;1"].getService(Ci.nsIOSKeyStore).isNSSKeyStore > > wrong initially. > > It returns with `true`. Thanks. That's interesting… Attaching a few more crash reports may be useful to see if it's always hanging in the same place or just in a loop. Thanks for all your help!

Running a debug build may also reveal useful information: https://queue.taskcluster.net/v1/task/NfLaiIZgS9WCff4rAF4Auw/runs/0/artifacts/public/build/target.tar.bz2

> $ file firefox firefox: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.26, BuildID[sha1]=34c1bebd0754616caf09bdd449739f918937e609, not stripped Can you provide me with a 64bit binary, or do I have to install 32bit libraries to run this? When I try to run this build as is, bash reports that the file cannot be found, and https://askubuntu.com/a/133460 reports that it is likely 32bit and I need to install libraries. Two additional crashes here: https://crash-stats.mozilla.com/report/index/424383ea-dc0a-4d93-9213-7a2450181019 https://crash-stats.mozilla.com/report/index/8fe3bd3f-a163-4ae8-a420-3128c0181019

Sorry about that. Here is linux64 debug: https://queue.taskcluster.net/v1/task/QVUdjdnZS0K9b0kY2SxFOA/runs/0/artifacts/public/build/target.tar.bz2

(In reply to Asif Youssuff from comment #19) > Two additional crashes here: > > https://crash-stats.mozilla.com/report/index/424383ea-dc0a-4d93-9213- > 7a2450181019 > https://crash-stats.mozilla.com/report/index/8fe3bd3f-a163-4ae8-a420- > 3128c0181019 OK, since these are all in GetIsNSSKeyStore and the source line is showing Mutex.h, I'm thinking this is a deadlock.

Attached is the console output when running this build. Towards the end, I did ctrl-c to end the process, in case that makes a difference.

(In reply to Asif Youssuff from comment #22) > Created attachment 9018469 [details] > debug-console.txt > > Attached is the console output when running this build. Towards the end, I > did ctrl-c to end the process, in case that makes a difference. Yeah, the log stops at isNSSKeyStore getter call in OSKeyStore.ensureLoggedIn

Tim, have you been able to reproduce this yet? Bug 1499912 has two Mozillians who potentially hit this too.

This reproduces on my machine if I do something like: let text = new Uint8Array(8192); let promise = keystore.asyncEncryptBytes(LABELS[0], text.length, text); for (let i = 0; i < 1000; i++) { let a = keystore.isNSSKeyStore; } let ciphertext = await promise; Basically we need to change how the OSKeyStore handles multi-threaded access to the underlying key store implementation.

(In reply to Dana Keeler [:keeler] (she/her) (use needinfo) from comment #26) > Basically we need to change how the OSKeyStore handles multi-threaded access > to the underlying key store implementation. Would it be helpful if OSKeyStore.jsm never attempt to read isNSSKeyStore if a promise from other async functions is pending? OSKeyStore.jsm can simply cache the value on startup I guess...

Hi Asif, Would you mind test this build? Credit cards should be completely removed and there shouldn't be any freeze. If this is good I am going to reland bug 1486954 with these changes. https://queue.taskcluster.net/v1/task/SGBFbgTnR5CZXk1RsM2qDA/runs/0/artifacts/public/build/target.tar.bz2 Thank you so much for your help!

The original threading model of OSKeyStore could lead to a deadlock if an asynchronous event were dispatched and then the isNSSKeyStore attribute were queried. This patch removes that pitfall by moving the determination of the attribute to OSKeyStore rather than the underlying implementation. Additionally, the original threading model was inefficient in that it created and destroyed a thread per asynchronous operation. This patch reworks this to only ever create one worker thread.

Tim, no problem at all - happy to help. The build linked in comment 28 works for me without freezing. Only tested for a few minutes, but the other build reliably freezes, so I think your changes were successful.

Pushed by dkeeler@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/f3273aa382dc rework the threading model of OSKeyStore r=jcj

Can you confirm that the latest Nightly (do a check for updates) doesn't have the problem?

Posting from the profile that used to freeze previous Nightlies and it is working fine! Thanks for the rapid fix. :)