1714706 - Crash in [@ webrender::batch::BatchBuilder::add_prim_to_batch]

Status: NEW

(Core :: Graphics: WebRender, defect)

Description

[Rob Lemley [:rjl]]

Crash report: https://crash-stats.mozilla.org/report/index/93404326-1133-4615-b626-a4cd10210604

MOZ_CRASH Reason: internal error: entered unreachable code

Top 10 frames of crashing thread:

0 libxul.so RustMozCrash mozglue/static/rust/wrappers.cpp:17
1 libxul.so mozglue_static::panic_hook mozglue/static/rust/lib.rs:89
2 libxul.so core::ops::function::Fn::call /builds/worker/fetches/rustc/lib/rustlib/src/rust/library/core/src/ops/function.rs:70
3 libxul.so std::panicking::rust_panic_with_hook library/std/src/panicking.rs:595
4 libxul.so std::panicking::begin_panic_handler::{{closure}} library/std/src/panicking.rs:495
5 libxul.so std::sys_common::backtrace::__rust_end_short_backtrace library/std/src/sys_common/backtrace.rs:141
6 libxul.so rust_begin_unwind library/std/src/panicking.rs:493
7 libxul.so core::panicking::panic_fmt library/core/src/panicking.rs:92
8 libxul.so core::panicking::panic library/core/src/panicking.rs:50
9 libxul.so webrender::batch::BatchBuilder::add_prim_to_batch gfx/wr/webrender/src/batch.rs:1151

Consistently crashing with following:

• Browse to https://mozilla.jcranmer.com/c-ccov/coverage.html?dir=comm
  • should get a heatmap graphic
• Drop the ?dir=comm, https://mozilla.jcranmer.com/c-ccov/coverage.html

Result:

• crash

Firefox 89.0, Linux x64