1070672 - Hang in js::jit::MarkLoopBlocks

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine: JIT, defect)

Description

[gee]

User Agent: Mozilla/5.0 (Windows NT 5.2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2159.4 Safari/537.36



Actual results:

>	mozjs.dll!js::jit::MarkLoopBlocks(js::jit::MIRGraph & graph={...}, js::jit::MBasicBlock * header=0x33b0b2d0, bool * canOsr=0x0817fe2f)  Line 3179 + 0x4 bytes	C++
 	mozjs.dll!js::jit::LICM(js::jit::MIRGenerator * mir=0x1d39b150, js::jit::MIRGraph & graph={...})  Line 240 + 0xb bytes	C++
 	mozjs.dll!js::jit::OptimizeMIR(js::jit::MIRGenerator * mir=0x1d39b150)  Line 1538 + 0x7 bytes	C++
 	mozjs.dll!js::jit::CompileBackEnd(js::jit::MIRGenerator * mir=0x1d39b150)  Line 1807 + 0x9 bytes	C++
 	mozjs.dll!js::HelperThread::handleIonWorkload()  Line 954 + 0xc bytes	C++
 	mozjs.dll!js::HelperThread::threadLoop()  Line 1252	C++
 	nss3.dll!_PR_NativeRunThread(void * arg=0x0100f7d0)  Line 419	C
 	nss3.dll!pr_root(void * arg=0x0100f7d0)  Line 90 + 0xc bytes	C
 	msvcr100.dll!_endthreadex()  + 0x3a bytes	
 	[Frames below may be incorrect and/or missing, no symbols loaded for msvcr100.dll]	
 	msvcr100.dll!_endthreadex()  + 0xe4 bytes	
 	kernel32.dll!GetModuleHandleA()  + 0xdf bytes

Comment 1

[Matthias Versen [:Matti]]

Can we have a little bit more context like the used Firefox version, where or how this happened....

Comment 2

[gee]

This hang is occured in rare case. I don't know how to reproduce it.

Comment 3

[Jan de Mooij [:jandem]]

2 years ago and I vaguely remember we fixed bugs in this area.

Anyone, please file a new bug if you're still seeing this.