1419169 - Crash in RtlpWaitOnCriticalSection | RtlpEnterCriticalSectionContended | RtlEnterCriticalSection | _cairo_scaled_font_map_lock

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect)

Description

[Darkspirit]

Seen on Socorro. This is the only report from the last six months and new (from yesterday).

Windows 10: bp-47fb54ac-41a0-40b1-b47e-dd9ee0171119 2017-11-19 18:02:17 build 20171119100329
> 0 	ntdll.dll 	RtlpWaitOnCriticalSection 	
> 1 	ntdll.dll 	RtlpEnterCriticalSectionContended 	
> 2 	ntdll.dll 	RtlEnterCriticalSection 	
> 3 	xul.dll 	_cairo_scaled_font_map_lock 	gfx/cairo/cairo/src/cairo-scaled-font.c:358
> 4 	xul.dll 	moz_cairo_scaled_font_create 	gfx/cairo/cairo/src/cairo-scaled-font.c:925
> 5 	xul.dll 	mozilla::gfx::ScaledFontBase::PopulateCairoScaledFont() 	gfx/2d/ScaledFontBase.cpp:94
> 6 	xul.dll 	mozilla::gfx::UnscaledFontDWrite::CreateScaledFont(float, unsigned char const*, unsigned int, mozilla::gfx::FontVariation const*, unsigned int) 	gfx/2d/ScaledFontDWrite.cpp:428
> 7 	xul.dll 	mozilla::gfx::RecordedScaledFontCreationByIndex::PlayEvent(mozilla::gfx::Translator*) 	gfx/2d/RecordedEventImpl.h:3022
> 8 	xul.dll 	<lambda_68ea4fc55ce803f49fd2d4739c514743>::operator() 	gfx/2d/InlineTranslator.cpp:84
> 9 	xul.dll 	mozilla::gfx::RecordedEvent::DoWithEvent<`mozilla::gfx::InlineTranslator::TranslateRecording'::`2'::MemReader, <lambda_68ea4fc55ce803f49fd2d4739c514743> > 	gfx/2d/RecordedEventImpl.h:3322
> 10 	xul.dll 	mozilla::gfx::InlineTranslator::TranslateRecording(char*, unsigned __int64) 	gfx/2d/InlineTranslator.cpp:77
> 11 	xul.dll 	mozilla::wr::Moz2DRenderCallback 	gfx/webrender_bindings/Moz2DImageRenderer.cpp:222
> 12 	xul.dll 	wr_moz2d_render_cb 	gfx/webrender_bindings/Moz2DImageRenderer.cpp:248
> 13 	xul.dll 	rayon_core::job::{{impl}}::execute<closure> 	third_party/rust/rayon-core/src/job.rs:139
> 14 	xul.dll 	rayon_core::registry::WorkerThread::wait_until<rayon_core::latch::CountLatch> 	third_party/rust/rayon-core/src/registry.rs:433
> 15 	xul.dll 	std::sys_common::backtrace::__rust_begin_short_backtrace<closure, ()> 	src/libstd/sys_common/backtrace.rs:133
> 16 	xul.dll 	alloc::boxed::{{impl}}::call_box<(), closure> 	src/liballoc/boxed.rs:681
> 17 	xul.dll 	std::sys::imp::thread::{{impl}}::new::thread_start 	src/libstd/sys/windows/thread.rs:50
> 18 	kernel32.dll 	BaseThreadInitThunk 	
> 19 	ntdll.dll 	RtlUserThreadStart

Comment 1

[Lee Salzman [:lsalzman]]

This may be related to bug 1416542, but that's only a suspicion given the stack. I have no way to verify this just from the stack trace, but the build in this report predates when I landed that fix (Nov 20). If we don't get any further reports after that build, then it might be safe to conclude this bug was just a consequence of that.

Comment 3

[Lee Salzman [:lsalzman]]

Haven't seen any other instances of this, so I'm going to close this out, assuming bug 1416542 fixed it. If it pops up again, we can already reopen.