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From Egor Pasko <egor.pa...@gmail.com>
Subject Re: [drlvm][jit] DRLVM segfault with Jitrino built in debug mode (was Re: [jira] Created: (HARMONY-2805) VM segfault)
Date Thu, 21 Dec 2006 10:11:21 GMT
On the 0x245 day of Apache Harmony Naveen Neelakantam wrote:
> Upon Egor's suggestion, I have changed the subject line for the JIRA
> and email thread.

thanks for that!

On Jitrino debug mode.. on Linux.. I do build it regularly :) and
working on it's stability, but yet, often something is broken, recent
failures on Classlib tests were resolved yesterday. I believe we will
enable Jitrino debug mode soon via option to 'build.sh' and by
default, just wanna make the debug/release switch without forced full
rebuild.

On the specific issue.. Recently I met the same weird bug as you
see. It is a blocker for me too, so, I am looking into it.

> Naveen
> 
> On Dec 19, 2006, at 3:05 PM, Naveen Neelakantam wrote:
> 
> > I am currently working to finish Egor Pasko's re-implementation of
> > ABCD, and as a result I like to build vm.jitrino in debug mode (so
> > that I can use asserts).  However, building vm.jitrino in debug
> > mode breaks DRLVM.  I've created 2 JIRAs that reflect this
> > HARMONY-2805 and HARMONY-2804.
> >
> > This raises a question in my mind.  Is anyone testing DRLVM built
> > fully in debug mode?  The default Cruise Control setup does not do
> > this and I find that troubling.
> >
> > Naveen
> >
> > Begin forwarded message:
> >
> >> From: "Naveen Neelakantam (JIRA)" <jira@apache.org>
> >> Date: December 19, 2006 12:58:20 PM CST
> >> To: neelakan@uiuc.edu
> >> Subject: [jira] Created: (HARMONY-2805) VM segfault
> >>
> >> VM segfault
> >> -----------
> >>
> >>                  Key: HARMONY-2805
> >>                  URL: http://issues.apache.org/jira/browse/
> >> HARMONY-2805
> >>              Project: Harmony
> >>           Issue Type: Bug
> >>           Components: DRLVM
> >>          Environment: RHEL 4 update 4, gcc 3.4.6, core2 (i386)
> >>             Reporter: Naveen Neelakantam
> >>             Priority: Blocker
> >>
> >>
> >> If I build vm.jitrino in debug mode, the VM segfaults on any Java
> >> app that runs for a non-trivial amount of time.
> >>
> >> The bug also manifests iteself if you type:
> >>> java -Xem:server_static -showversion
> >> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache
> >> Software Foundation or its licensors, as applicable.
> >> java version "1.5.0"
> >> pre-alpha : not complete or compatible
> >> svn = r488351, (Dec 18 2006), Linux/ia32/gcc 3.4.6, debug build
> >> http://incubator.apache.org/harmony
> >> SIGSEGV in VM code.
> >> Stack trace:
> >>         1: Jitrino::Ia32::GCSafePoint::isHardwareExceptionPoint()
> >> const (/home/dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/vm/
> >> jitrino/src/codegenerator/ia32/Ia32GCMap.h:102)
> >>         2: Jitrino::Ia32::hwecompare::operator()
> >> (Jitrino::Ia32::GCSafePoint const*, Jitrino::Ia32::GCSafePoint
> >> const*) const (/home/dcsfiles/neelakan/Sandbox/Harmony/trunk/
> >> working_vm/vm/jitrino/src/codegenerator/ia32/Ia32GCMap.cpp:221)
> >>         3: ?? (00313f5d
> >> :313)
> >>         4: ?? (00313931
> >> :313931)
> >>         5: ?? (00312d8a
> >> :312)
> >>         6: ?? (003115d0
> >> :3115)
> >>         7: Jitrino::Ia32::GCMap::write(unsigned char*) (/home/
> >> dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/vm/jitrino/src/
> >> codegenerator/ia32/Ia32GCMap.cpp:239)
> >>         8: Jitrino::Ia32::InfoBlockWriter::runImpl() (/home/
> >> dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/vm/jitrino/src/
> >> codegenerator/ia32/Ia32GCMap.cpp:528)
> >>         9: Jitrino::Ia32::SessionAction::run() (/home/dcsfiles/
> >> neelakan/Sandbox/Harmony/trunk/working_vm/vm/jitrino/src/
> >> codegenerator/ia32/Ia32IRManager.cpp:2155)
> >>         10: Jitrino::runPipeline(Jitrino::CompilationContext*) (/
> >> home/dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/vm/jitrino/
> >> src/main/Jitrino.cpp:226)
> >>         11: Jitrino::compileMethod(Jitrino::CompilationContext*) (/
> >> home/dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/vm/jitrino/
> >> src/main/Jitrino.cpp:261)
> >>         12: Jitrino::Jitrino::CompileMethod
> >> (Jitrino::CompilationContext*) (/home/dcsfiles/neelakan/Sandbox/
> >> Harmony/trunk/working_vm/vm/jitrino/src/main/Jitrino.cpp:286)
> >>         13: JIT_compile_method_with_params (/home/dcsfiles/
> >> neelakan/Sandbox/Harmony/trunk/working_vm/vm/jitrino/src/vm/drl/
> >> DrlJITInterface.cpp:278)
> >>         14: Dll_JIT::compile_method_with_params(void*, Method*,
> >> OpenMethodExecutionParams) (/home/dcsfiles/neelakan/Sandbox/
> >> Harmony/trunk/working_vm/vm/vmcore/include/dll_jit_intf.h:86)
> >>         15: compile_do_compilation_jit(Method*, JIT*) (/home/
> >> dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/vm/vmcore/src/
> >> jit/compile.cpp:709)
> >>         16: vm_compile_method (/home/dcsfiles/neelakan/Sandbox/
> >> Harmony/trunk/working_vm/vm/vmcore/src/class_support/
> >> C_Interface.cpp:2454)
> >>         17: DrlEMImpl::compileMethod(Method*) (/home/dcsfiles/
> >> neelakan/Sandbox/Harmony/trunk/working_vm/vm/em/src/DrlEMImpl.cpp:
> >> 545)
> >>         18: CompileMethod (/home/dcsfiles/neelakan/Sandbox/Harmony/
> >> trunk/working_vm/vm/em/src/em_intf.cpp:49)
> >>         19: compile_do_compilation (/home/dcsfiles/neelakan/
> >> Sandbox/Harmony/trunk/working_vm/vm/vmcore/src/jit/compile.cpp:789)
> >>         20: compile_jit_a_method(Method*) (/home/dcsfiles/neelakan/
> >> Sandbox/Harmony/trunk/working_vm/vm/vmcore/src/jit/compile.cpp:840)
> >>         21: IP is 0xB6974162 <native code>
> >>         22: vm_invoke_native_array_stub (/home/dcsfiles/neelakan/
> >> Sandbox/Harmony/trunk/working_vm/vm/vmcore/src/util/ia32/base/
> >> invoke_native_stub_ia32.asm:41)
> >>         23: JIT_execute_method_default(void*, _jmethodID*,
> >> jvalue*, jvalue*) (/home/dcsfiles/neelakan/Sandbox/Harmony/trunk/
> >> working_vm/vm/vmcore/src/util/ia32/base/ini_iA32.cpp:199)
> >>         24: DrlEMImpl::executeMethod(_jmethodID*, jvalue*,
> >> jvalue*) (/home/dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/
> >> vm/em/src/DrlEMImpl.cpp:514)
> >>         25: ExecuteMethod (/home/dcsfiles/neelakan/Sandbox/Harmony/
> >> trunk/working_vm/vm/em/src/em_intf.cpp:43)
> >>         26: vm_execute_java_method_array(_jmethodID*, jvalue*,
> >> jvalue*) (/home/dcsfiles/neelakan/Sandbox/Harmony/trunk/working_vm/
> >> vm/vmcore/src/jit/ini.cpp:51)
> >>         27: vm_create_jthread (/home/dcsfiles/neelakan/Sandbox/
> >> Harmony/trunk/working_vm/vm/vmcore/src/init/vm_init.cpp:549)
> >>         28: vm_attach_internal(JNIEnv_External**, _jobject**,
> >> JavaVM_External*, _jobject*, char*, unsigned char) (/home/dcsfiles/
> >> neelakan/Sandbox/Harmony/trunk/working_vm/vm/vmcore/src/init/
> >> vm_init.cpp:588)
> >>         29: JNI_CreateJavaVM (/home/dcsfiles/neelakan/Sandbox/
> >> Harmony/trunk/working_vm/vm/vmcore/src/jni/jni.cpp:499)
> >>         30: ?? (??:-1)
> >>         31: ?? (??:-1)
> >>         32: ?? (??:-1)
> >>         33: hysig_protect (/home/dcsfiles/neelakan/Sandbox/Harmony/
> >> trunk/working_classlib/modules/portlib/src/main/native/port/unix/
> >> hysignal.c:283)
> >>         34: ?? (??:-1)
> >>         35: ?? (??:-1)
> >>         36: ?? (??:-1)
> >> <end of stack trace>
> >> Segmentation fault
> >>
> >>
> >> -- 
> >> This message is automatically generated by JIRA.
> >> -
> >> If you think it was sent incorrectly contact one of the
> >> administrators: http://issues.apache.org/jira/secure/
> >> Administrators.jspa
> >> -
> >> For more information on JIRA, see: http://www.atlassian.com/
> >> software/jira
> >>
> >>
> >
> 
> 

-- 
Egor Pasko


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