1719763 - Crash in [@ scl_ScaleDownFromSubPixelOverscale]

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect)

Description

[Andrew McCreight [:mccr8]]

Maybe Fission related. (DOMFissionEnabled=1)

Crash report: https://crash-stats.mozilla.org/report/index/86a18119-d64e-4638-96de-486870210707

Reason: EXCEPTION_ACCESS_VIOLATION_WRITE

Top 10 frames of crashing thread:

0 dwrite.dll void scl_ScaleDownFromSubPixelOverscale 
1 dwrite.dll void fsg_GetContourData 
2 dwrite.dll fs__Contour 
3 dwrite.dll bool TrueTypeRasterizer::Implementation::RasterizeInternal 
4 dwrite.dll int TrueTypeRasterizer::Implementation::GetBitmapInternal 
5 dwrite.dll void TrueTypeRasterizer::Implementation::GetBitmap 
6 dwrite.dll void GlyphBitmapRasterizationState::RasterizeGlyph 
7 dwrite.dll static unsigned int GlyphDataElement<struct GlyphBitmapLayout, struct GlyphBitmapRasterizationParameters, class GlyphBitmapRasterizationState>::AddGlyphs 
8 dwrite.dll GlyphDataElement<GlyphBitmapLayout, GlyphBitmapRasterizationParameters, GlyphBitmapRasterizationState>::GetGlyphData 
9 dwrite.dll void GetGlyphBitmaps 

Lots of crashes, but from only 2 installs across 2 builds so maybe there's just a single user having trouble.

Comment 1

[Chris Peterson [:cpeterson]]

This doesn't look like a Fission crash, even though the crash report in comment 0 has DOMFissionEnabled=1.

Comment 2

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

Closing because no crashes reported for 12 weeks.