1486218 - Crash in core::option::expect_failed | webrender::clip_scroll_tree::ClipScrollTree::get_relative_transform

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P3)

Description

[Calixte Denizet (:calixte)]

This bug was filed from the Socorro interface and is
report bp-d6e71090-ea55-42e0-bb39-6e0530180825.
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Top 10 frames of crashing thread:

0 xul.dll static void std::panicking::rust_panic_with_hook src/libstd/panicking.rs:521
1 xul.dll static void std::panicking::continue_panic_fmt src/libstd/panicking.rs:426
2 xul.dll static void std::panicking::rust_begin_panic src/libstd/panicking.rs:337
3 xul.dll static void core::panicking::panic_fmt src/libcore/panicking.rs:92
4 xul.dll static void core::option::expect_failed src/libcore/option.rs:960
5 xul.dll static union core::option::Option<euclid::transform3d::TypedTransform3D<f32, webrender_api::units::LayoutPixel, webrender_api::units::LayoutPixel>> webrender::clip_scroll_tree::ClipScrollTree::get_relative_transform gfx/webrender/src/clip_scroll_tree.rs:164
6 xul.dll static void webrender::prim_store::PrimitiveStore::prepare_prim_runs gfx/webrender/src/prim_store.rs:1814
7 xul.dll static union core::option::Option<euclid::rect::TypedRect<f32, webrender_api::units::LayoutPixel>> webrender::prim_store::PrimitiveStore::prepare_prim_for_render gfx/webrender/src/prim_store.rs:1562
8 xul.dll static void webrender::prim_store::PrimitiveStore::prepare_prim_runs gfx/webrender/src/prim_store.rs:1819
9 xul.dll static union core::option::Option<euclid::rect::TypedRect<f32, webrender_api::units::LayoutPixel>> webrender::prim_store::PrimitiveStore::prepare_prim_for_render gfx/webrender/src/prim_store.rs:1562

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There are 2 crashes (from 1 installation) in nightly 63 with buildid 20180824222409. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1485691.

[1] https://hg.mozilla.org/mozilla-central/rev?node=4a57ba156ecf

Comment 1

[Liz Henry (:lizzard) (relman/hg->git project)]

Marking fix-optional for 64. We could still take a patch for 65, and if it's verified and doesn't seem risky, could still take fixes for 64 as well.

Comment 2

[Glenn Watson [:gw]]

This will most likely be fixed by https://github.com/servo/webrender/pull/3331 when it lands in Gecko.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

Should be fixed now, reopen if it comes back