1974669 - Crash in [@ allocator_api2::stable::vec::Vec<T>::push]

Status: NEW

(Core :: Graphics: WebRender, defect)

Description

[BugBot [:suhaib / :marco/ :calixte]]

Crash report: https://crash-stats.mozilla.org/report/index/2caa2de7-170d-4f72-bb14-052e10250627

Reason: EXCEPTION_ILLEGAL_INSTRUCTION

Top 10 frames of crashing thread:

0  xul.dll  core::ptr::write  /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/ptr/mod.rs:1582
0  xul.dll  allocator_api2::stable::vec::Vec<webrender::render_task_graph::SubPass, webrender::frame_allocator::FrameAllocator>::push  third_party/rust/allocator-api2/src/stable/vec/mod.rs:1798
0  xul.dll  webrender::render_task_graph::RenderTaskGraphBuilder::end_frame  gfx/wr/webrender/src/render_task_graph.rs:564
1  xul.dll  webrender::frame_builder::FrameBuilder::build  gfx/wr/webrender/src/frame_builder.rs:732
2  xul.dll  webrender::render_backend::Document::build_frame  gfx/wr/webrender/src/render_backend.rs:531
3  xul.dll  webrender::render_backend::RenderBackend::update_document  gfx/wr/webrender/src/render_backend.rs:1568
4  xul.dll  webrender::render_backend::RenderBackend::prepare_transactions  gfx/wr/webrender/src/render_backend.rs:1399
4  xul.dll  webrender::render_backend::RenderBackend::process_api_msg  gfx/wr/webrender/src/render_backend.rs:1246
5  xul.dll  webrender::render_backend::RenderBackend::run  gfx/wr/webrender/src/render_backend.rs:867
5  xul.dll  webrender::renderer::init::create_webrender_instance::closure$6  gfx/wr/webrender/src/renderer/init.rs:735

By querying Nightly crashes reported within the last 2 months, here are some insights about the signature:

• First crash report: 2025-04-22
• Process type: GPU
• Is startup crash: No
• Has user comments: No
• Is null crash: Yes - 1 out of 3 crashes happened on null or near null memory address

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Graphics: WebRender' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Timothy Nikkel (:tnikkel)]

3 of 4 crashes are on a family 6 model 183 stepping 1 which is the buggy cpu