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Posted to commits@harmony.apache.org by "Mikhail Fursov (JIRA)" <ji...@apache.org> on 2007/04/20 14:52:15 UTC
[jira] Created: (HARMONY-3715) [drlvm] Memory access errors in
DRLVM
[drlvm] Memory access errors in DRLVM
-------------------------------------
Key: HARMONY-3715
URL: https://issues.apache.org/jira/browse/HARMONY-3715
Project: Harmony
Issue Type: Bug
Components: DRLVM
Reporter: Mikhail Fursov
Here are results from valgrind (http://valgrind.org/) run with DRLVM
1)
==21788== Conditional jump or move depends on uninitialised value(s)
==21788== at 0x4BFF1E9: EncoderBase::Operands::add(EncoderBase::Operand const&) (enc_base.h:546)
==21788== by 0x5E8FB40: Jitrino::Ia32::Encoder::emit(unsigned char*, Jitrino::Ia32::Inst const*) (Ia32Encoder.cpp:226)
==21788== by 0x5EBEEEB: Jitrino::Ia32::Inst::emit(unsigned char*) (Ia32Inst.cpp:441)
==21788== by 0x5E68CB5: Jitrino::Ia32::CodeEmitter::emitCode() (Ia32CodeEmitter.cpp:427)
==21788== by 0x5E68500: Jitrino::Ia32::CodeEmitter::runImpl() (Ia32CodeEmitter.cpp:300)
==21788== by 0x5EB7F41: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
2)
==21788== Conditional jump or move depends on uninitialised value(s)
==21788== at 0x5EB7F80: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2274)
==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
==21788== by 0x4441039: ???
==21788==
3)
==21788== Conditional jump or move depends on uninitialised value(s)
==21788== at 0x5EB7F65: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2272)
==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
==21788== by 0x4441039: ???
4)
==22293== Conditional jump or move depends on uninitialised value(s)
==22293== at 0x5F0243C: Jitrino::Ia32::StackLayouter::createProlog() (Ia32StackLayout.cpp:332)
==22293== by 0x5F01E10: Jitrino::Ia32::StackLayouter::runImpl() (Ia32StackLayout.cpp:181)
==22293== by 0x5EB7F49: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
==22293== by 0x5F3DAAC: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
==22293== by 0x5F3DC2E: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
==22293== by 0x5F3DD46: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
==22293== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
==22293== by 0x4C0538C: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
==22293== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
==22293== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
==22293== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
==22293== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
==22293==
5)
==22293== Conditional jump or move depends on uninitialised value(s)
==22293== at 0x4BD22EA: Class::assign_offsets_to_methods(Global_Env*) (Prepare.cpp:833)
==22293== by 0x4BD3BBD: Class::prepare(Global_Env*) (Prepare.cpp:1223)
==22293== by 0x4BEEC56: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:366)
==22293== by 0x4BCB98E: Global_Env::LoadCoreClass(String const*) (Environment.cpp:280)
==22293== by 0x4CBCB5E: preload_class(Global_Env*, String*) (vm_init.cpp:72)
==22293== by 0x4CBD856: bootstrap_initial_java_classes(Global_Env*) (vm_init.cpp:308)
==22293== by 0x4CBDAAC: preload_classes(Global_Env*) (vm_init.cpp:342)
==22293== by 0x4CBF097: vm_init1(JavaVM_Internal*, JavaVMInitArgs*) (vm_init.cpp:713)
==22293== by 0x4C29F54: JNI_CreateJavaVM (jni.cpp:499)
==22293== by 0x80499BC: invocation (main.c:658)
==22293== by 0x80490AF: gpProtectedMain (main.c:379)
==22293== by 0x804B506: main (cmain.c:147)
6)
==22293== Conditional jump or move depends on uninitialised value(s)
==22293== at 0x4BDC368: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:110)
==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
==22293== by 0x4BEEDB1: ClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.cpp:398)
==22293== by 0x4BF7D7E: BootstrapClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.h:352)
==22293== by 0x4BF3F22: BootstrapClassLoader::LoadFromFile(String const*) (classloader.cpp:1659)
==22293== by 0x4BF2FE6: BootstrapClassLoader::DoLoadClass(Global_Env*, String const*) (classloader.cpp:1435)
==22293== by 0x4BF2D68: ClassLoader::LoadClass(Global_Env*, String const*) (classloader.cpp:1390)
==22293== by 0x4BEEC15: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:363)
==22293== by 0x4BC8D9E: class_load_verify_prepare_from_jni(Global_Env*, String const*) (Class_File_Loader.cpp:3642)
==22293== by 0x4BAA582: class_find_class_from_loader (C_Interface.cpp:1036)
==22293== by 0x4C114DA: Java_java_lang_VMClassRegistry_loadBootstrapClass (java_lang_VMClassRegistry.cpp:82)
==22293== by 0x786AE35: ???
7)
==22293== Invalid read of size 4
==22293== at 0x4BDC350: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:109)
==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
==22293== by 0x4C2A5FD: FindClass(JNIEnv_External*, char const*) (jni.cpp:637)
==22293== by 0x804AA95: main_runJavaMain (main.c:1232)
==22293== by 0x8049AF0: invocation (main.c:730)
==22293== by 0x80490AF: gpProtectedMain (main.c:379)
==22293== by 0x804B506: main (cmain.c:147)
8)
==22293== Address 0x70CCE14 is 4 bytes inside a block of size 6 alloc'd
==22293== at 0x401B85E: malloc (vg_replace_malloc.c:149)
==22293== by 0x4CC83B5: string_get_utf8_chars(ManagedObject*) (vm_strings.cpp:478)
==22293== by 0x4CC84D1: string_get_utf8_chars_h(_jobject*) (vm_strings.cpp:492)
==22293== by 0x4C2D3E7: GetStringUTFChars(JNIEnv_External*, _jobject*, unsigned char*) (jni.cpp:1179)
==22293== by 0x804AA39: main_runJavaMain (main.c:1222)
==22293== by 0x8049AF0: invocation (main.c:730)
==22293== by 0x80490AF: gpProtectedMain (main.c:379)
==22293== by 0x804B506: main (cmain.c:147)
================================================
To reproduce the results you use these files:
Empty.java:
public class Empty {
public static void main(String[] args) {
System.loadLibrary("empty");
nat();
}
static native void nat();
}
Empty.c:
#include <jni.h>
#include "stdlib.h"
#ifdef __cplusplus
extern "C" {
#endif
JNIEXPORT void JNICALL Java_Empty_nat (JNIEnv *p1, jclass p2) {
int a;
if( a == 4 ) a = 3;
}
#ifdef __cplusplus
}
#endif
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
Re: [jira] Commented: (HARMONY-3715) [drlvm] Memory access errors in DRLVM
Posted by Mikhail Loenko <ml...@gmail.com>.
2007/4/24, Alexey Varlamov (JIRA) <ji...@apache.org>:
>
> [ https://issues.apache.org/jira/browse/HARMONY-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12491126 ]
>
> Alexey Varlamov commented on HARMONY-3715:
> ------------------------------------------
>
> Mikhail L,
> most such reports are nearly useless without backtrace: uninitialized values come as arguments and it is hard to find real cause.
> In particular, those warnings in JET are caused by managed code and I'm not sure how we could trace them without manual debugging.
That's right. And now you know where to put breakpoint and what test to run ;)
Thanks,
Mikhail
>
> > [drlvm] Memory access errors in DRLVM
> > -------------------------------------
> >
> > Key: HARMONY-3715
> > URL: https://issues.apache.org/jira/browse/HARMONY-3715
> > Project: Harmony
> > Issue Type: Bug
> > Components: DRLVM
> > Reporter: Mikhail Fursov
> >
> > Here are results from valgrind (http://valgrind.org/) run with DRLVM
> > 1)
> > ==21788== Conditional jump or move depends on uninitialised value(s)
> > ==21788== at 0x4BFF1E9: EncoderBase::Operands::add(EncoderBase::Operand const&) (enc_base.h:546)
> > ==21788== by 0x5E8FB40: Jitrino::Ia32::Encoder::emit(unsigned char*, Jitrino::Ia32::Inst const*) (Ia32Encoder.cpp:226)
> > ==21788== by 0x5EBEEEB: Jitrino::Ia32::Inst::emit(unsigned char*) (Ia32Inst.cpp:441)
> > ==21788== by 0x5E68CB5: Jitrino::Ia32::CodeEmitter::emitCode() (Ia32CodeEmitter.cpp:427)
> > ==21788== by 0x5E68500: Jitrino::Ia32::CodeEmitter::runImpl() (Ia32CodeEmitter.cpp:300)
> > ==21788== by 0x5EB7F41: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> > ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> > ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> > ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> > ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> > ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> > ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> > 2)
> > ==21788== Conditional jump or move depends on uninitialised value(s)
> > ==21788== at 0x5EB7F80: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2274)
> > ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> > ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> > ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> > ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> > ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> > ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> > ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> > ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> > ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> > ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> > ==21788== by 0x4441039: ???
> > ==21788==
> > 3)
> > ==21788== Conditional jump or move depends on uninitialised value(s)
> > ==21788== at 0x5EB7F65: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2272)
> > ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> > ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> > ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> > ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> > ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> > ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> > ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> > ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> > ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> > ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> > ==21788== by 0x4441039: ???
> > 4)
> > ==22293== Conditional jump or move depends on uninitialised value(s)
> > ==22293== at 0x5F0243C: Jitrino::Ia32::StackLayouter::createProlog() (Ia32StackLayout.cpp:332)
> > ==22293== by 0x5F01E10: Jitrino::Ia32::StackLayouter::runImpl() (Ia32StackLayout.cpp:181)
> > ==22293== by 0x5EB7F49: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> > ==22293== by 0x5F3DAAC: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> > ==22293== by 0x5F3DC2E: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> > ==22293== by 0x5F3DD46: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> > ==22293== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> > ==22293== by 0x4C0538C: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> > ==22293== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> > ==22293== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> > ==22293== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> > ==22293== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> > ==22293==
> > 5)
> > ==22293== Conditional jump or move depends on uninitialised value(s)
> > ==22293== at 0x4BD22EA: Class::assign_offsets_to_methods(Global_Env*) (Prepare.cpp:833)
> > ==22293== by 0x4BD3BBD: Class::prepare(Global_Env*) (Prepare.cpp:1223)
> > ==22293== by 0x4BEEC56: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:366)
> > ==22293== by 0x4BCB98E: Global_Env::LoadCoreClass(String const*) (Environment.cpp:280)
> > ==22293== by 0x4CBCB5E: preload_class(Global_Env*, String*) (vm_init.cpp:72)
> > ==22293== by 0x4CBD856: bootstrap_initial_java_classes(Global_Env*) (vm_init.cpp:308)
> > ==22293== by 0x4CBDAAC: preload_classes(Global_Env*) (vm_init.cpp:342)
> > ==22293== by 0x4CBF097: vm_init1(JavaVM_Internal*, JavaVMInitArgs*) (vm_init.cpp:713)
> > ==22293== by 0x4C29F54: JNI_CreateJavaVM (jni.cpp:499)
> > ==22293== by 0x80499BC: invocation (main.c:658)
> > ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> > ==22293== by 0x804B506: main (cmain.c:147)
> > 6)
> > ==22293== Conditional jump or move depends on uninitialised value(s)
> > ==22293== at 0x4BDC368: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:110)
> > ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> > ==22293== by 0x4BEEDB1: ClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.cpp:398)
> > ==22293== by 0x4BF7D7E: BootstrapClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.h:352)
> > ==22293== by 0x4BF3F22: BootstrapClassLoader::LoadFromFile(String const*) (classloader.cpp:1659)
> > ==22293== by 0x4BF2FE6: BootstrapClassLoader::DoLoadClass(Global_Env*, String const*) (classloader.cpp:1435)
> > ==22293== by 0x4BF2D68: ClassLoader::LoadClass(Global_Env*, String const*) (classloader.cpp:1390)
> > ==22293== by 0x4BEEC15: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:363)
> > ==22293== by 0x4BC8D9E: class_load_verify_prepare_from_jni(Global_Env*, String const*) (Class_File_Loader.cpp:3642)
> > ==22293== by 0x4BAA582: class_find_class_from_loader (C_Interface.cpp:1036)
> > ==22293== by 0x4C114DA: Java_java_lang_VMClassRegistry_loadBootstrapClass (java_lang_VMClassRegistry.cpp:82)
> > ==22293== by 0x786AE35: ???
> > 7)
> > ==22293== Invalid read of size 4
> > ==22293== at 0x4BDC350: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:109)
> > ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> > ==22293== by 0x4C2A5FD: FindClass(JNIEnv_External*, char const*) (jni.cpp:637)
> > ==22293== by 0x804AA95: main_runJavaMain (main.c:1232)
> > ==22293== by 0x8049AF0: invocation (main.c:730)
> > ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> > ==22293== by 0x804B506: main (cmain.c:147)
> > 8)
> > ==22293== Address 0x70CCE14 is 4 bytes inside a block of size 6 alloc'd
> > ==22293== at 0x401B85E: malloc (vg_replace_malloc.c:149)
> > ==22293== by 0x4CC83B5: string_get_utf8_chars(ManagedObject*) (vm_strings.cpp:478)
> > ==22293== by 0x4CC84D1: string_get_utf8_chars_h(_jobject*) (vm_strings.cpp:492)
> > ==22293== by 0x4C2D3E7: GetStringUTFChars(JNIEnv_External*, _jobject*, unsigned char*) (jni.cpp:1179)
> > ==22293== by 0x804AA39: main_runJavaMain (main.c:1222)
> > ==22293== by 0x8049AF0: invocation (main.c:730)
> > ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> > ==22293== by 0x804B506: main (cmain.c:147)
> > ================================================
> > To reproduce the results you use these files:
> > Empty.java:
> > public class Empty {
> > public static void main(String[] args) {
> > System.loadLibrary("empty");
> > nat();
> > }
> > static native void nat();
> > }
> > Empty.c:
> > #include <jni.h>
> > #include "stdlib.h"
> > #ifdef __cplusplus
> > extern "C" {
> > #endif
> > JNIEXPORT void JNICALL Java_Empty_nat (JNIEnv *p1, jclass p2) {
> > int a;
> > if( a == 4 ) a = 3;
> >
> > }
> > #ifdef __cplusplus
> > }
> > #endif
>
> --
> This message is automatically generated by JIRA.
> -
> You can reply to this email to add a comment to the issue online.
>
>
[jira] Commented: (HARMONY-3715) [drlvm] Memory access errors in
DRLVM
Posted by "Mikhail Loenko (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12491123 ]
Mikhail Loenko commented on HARMONY-3715:
-----------------------------------------
I've run the same test with -Xem:opt and it reported the following error:
Conditional jump or move depends on uninitialised value(s)
CGSupport.cpp:245
Also I tried several tests from "intermittent" exclude lists,
on the java.awt.WindowTest it was reported about the following:
Conditional jump or move depends on uninitialised value(s)
at 0x5F9C344: Jitrino::Jet::rt_h_lcmp(long long, long long) (arith_rt.cpp:69)
by 0x1993E336: ???
Conditional jump or move depends on uninitialised value(s)
at 0x5F9C371: Jitrino::Jet::rt_h_lcmp(long long, long long) (arith_rt.cpp:70)
by 0x1993E336: ???
> [drlvm] Memory access errors in DRLVM
> -------------------------------------
>
> Key: HARMONY-3715
> URL: https://issues.apache.org/jira/browse/HARMONY-3715
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Mikhail Fursov
>
> Here are results from valgrind (http://valgrind.org/) run with DRLVM
> 1)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x4BFF1E9: EncoderBase::Operands::add(EncoderBase::Operand const&) (enc_base.h:546)
> ==21788== by 0x5E8FB40: Jitrino::Ia32::Encoder::emit(unsigned char*, Jitrino::Ia32::Inst const*) (Ia32Encoder.cpp:226)
> ==21788== by 0x5EBEEEB: Jitrino::Ia32::Inst::emit(unsigned char*) (Ia32Inst.cpp:441)
> ==21788== by 0x5E68CB5: Jitrino::Ia32::CodeEmitter::emitCode() (Ia32CodeEmitter.cpp:427)
> ==21788== by 0x5E68500: Jitrino::Ia32::CodeEmitter::runImpl() (Ia32CodeEmitter.cpp:300)
> ==21788== by 0x5EB7F41: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> 2)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F80: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2274)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> ==21788==
> 3)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F65: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2272)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> 4)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x5F0243C: Jitrino::Ia32::StackLayouter::createProlog() (Ia32StackLayout.cpp:332)
> ==22293== by 0x5F01E10: Jitrino::Ia32::StackLayouter::runImpl() (Ia32StackLayout.cpp:181)
> ==22293== by 0x5EB7F49: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==22293== by 0x5F3DAAC: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==22293== by 0x5F3DC2E: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==22293== by 0x5F3DD46: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==22293== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==22293== by 0x4C0538C: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==22293== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==22293== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==22293== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==22293== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==22293==
> 5)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BD22EA: Class::assign_offsets_to_methods(Global_Env*) (Prepare.cpp:833)
> ==22293== by 0x4BD3BBD: Class::prepare(Global_Env*) (Prepare.cpp:1223)
> ==22293== by 0x4BEEC56: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:366)
> ==22293== by 0x4BCB98E: Global_Env::LoadCoreClass(String const*) (Environment.cpp:280)
> ==22293== by 0x4CBCB5E: preload_class(Global_Env*, String*) (vm_init.cpp:72)
> ==22293== by 0x4CBD856: bootstrap_initial_java_classes(Global_Env*) (vm_init.cpp:308)
> ==22293== by 0x4CBDAAC: preload_classes(Global_Env*) (vm_init.cpp:342)
> ==22293== by 0x4CBF097: vm_init1(JavaVM_Internal*, JavaVMInitArgs*) (vm_init.cpp:713)
> ==22293== by 0x4C29F54: JNI_CreateJavaVM (jni.cpp:499)
> ==22293== by 0x80499BC: invocation (main.c:658)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 6)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BDC368: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:110)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4BEEDB1: ClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.cpp:398)
> ==22293== by 0x4BF7D7E: BootstrapClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.h:352)
> ==22293== by 0x4BF3F22: BootstrapClassLoader::LoadFromFile(String const*) (classloader.cpp:1659)
> ==22293== by 0x4BF2FE6: BootstrapClassLoader::DoLoadClass(Global_Env*, String const*) (classloader.cpp:1435)
> ==22293== by 0x4BF2D68: ClassLoader::LoadClass(Global_Env*, String const*) (classloader.cpp:1390)
> ==22293== by 0x4BEEC15: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:363)
> ==22293== by 0x4BC8D9E: class_load_verify_prepare_from_jni(Global_Env*, String const*) (Class_File_Loader.cpp:3642)
> ==22293== by 0x4BAA582: class_find_class_from_loader (C_Interface.cpp:1036)
> ==22293== by 0x4C114DA: Java_java_lang_VMClassRegistry_loadBootstrapClass (java_lang_VMClassRegistry.cpp:82)
> ==22293== by 0x786AE35: ???
> 7)
> ==22293== Invalid read of size 4
> ==22293== at 0x4BDC350: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:109)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4C2A5FD: FindClass(JNIEnv_External*, char const*) (jni.cpp:637)
> ==22293== by 0x804AA95: main_runJavaMain (main.c:1232)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 8)
> ==22293== Address 0x70CCE14 is 4 bytes inside a block of size 6 alloc'd
> ==22293== at 0x401B85E: malloc (vg_replace_malloc.c:149)
> ==22293== by 0x4CC83B5: string_get_utf8_chars(ManagedObject*) (vm_strings.cpp:478)
> ==22293== by 0x4CC84D1: string_get_utf8_chars_h(_jobject*) (vm_strings.cpp:492)
> ==22293== by 0x4C2D3E7: GetStringUTFChars(JNIEnv_External*, _jobject*, unsigned char*) (jni.cpp:1179)
> ==22293== by 0x804AA39: main_runJavaMain (main.c:1222)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> ================================================
> To reproduce the results you use these files:
> Empty.java:
> public class Empty {
> public static void main(String[] args) {
> System.loadLibrary("empty");
> nat();
> }
> static native void nat();
> }
> Empty.c:
> #include <jni.h>
> #include "stdlib.h"
> #ifdef __cplusplus
> extern "C" {
> #endif
> JNIEXPORT void JNICALL Java_Empty_nat (JNIEnv *p1, jclass p2) {
> int a;
> if( a == 4 ) a = 3;
>
> }
> #ifdef __cplusplus
> }
> #endif
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[jira] Commented: (HARMONY-3715) [drlvm] Memory access errors in
DRLVM
Posted by "Mikhail Fursov (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12490818 ]
Mikhail Fursov commented on HARMONY-3715:
-----------------------------------------
Yes, this is the test to check valgrind does work.
> [drlvm] Memory access errors in DRLVM
> -------------------------------------
>
> Key: HARMONY-3715
> URL: https://issues.apache.org/jira/browse/HARMONY-3715
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Mikhail Fursov
>
> Here are results from valgrind (http://valgrind.org/) run with DRLVM
> 1)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x4BFF1E9: EncoderBase::Operands::add(EncoderBase::Operand const&) (enc_base.h:546)
> ==21788== by 0x5E8FB40: Jitrino::Ia32::Encoder::emit(unsigned char*, Jitrino::Ia32::Inst const*) (Ia32Encoder.cpp:226)
> ==21788== by 0x5EBEEEB: Jitrino::Ia32::Inst::emit(unsigned char*) (Ia32Inst.cpp:441)
> ==21788== by 0x5E68CB5: Jitrino::Ia32::CodeEmitter::emitCode() (Ia32CodeEmitter.cpp:427)
> ==21788== by 0x5E68500: Jitrino::Ia32::CodeEmitter::runImpl() (Ia32CodeEmitter.cpp:300)
> ==21788== by 0x5EB7F41: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> 2)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F80: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2274)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> ==21788==
> 3)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F65: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2272)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> 4)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x5F0243C: Jitrino::Ia32::StackLayouter::createProlog() (Ia32StackLayout.cpp:332)
> ==22293== by 0x5F01E10: Jitrino::Ia32::StackLayouter::runImpl() (Ia32StackLayout.cpp:181)
> ==22293== by 0x5EB7F49: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==22293== by 0x5F3DAAC: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==22293== by 0x5F3DC2E: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==22293== by 0x5F3DD46: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==22293== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==22293== by 0x4C0538C: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==22293== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==22293== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==22293== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==22293== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==22293==
> 5)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BD22EA: Class::assign_offsets_to_methods(Global_Env*) (Prepare.cpp:833)
> ==22293== by 0x4BD3BBD: Class::prepare(Global_Env*) (Prepare.cpp:1223)
> ==22293== by 0x4BEEC56: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:366)
> ==22293== by 0x4BCB98E: Global_Env::LoadCoreClass(String const*) (Environment.cpp:280)
> ==22293== by 0x4CBCB5E: preload_class(Global_Env*, String*) (vm_init.cpp:72)
> ==22293== by 0x4CBD856: bootstrap_initial_java_classes(Global_Env*) (vm_init.cpp:308)
> ==22293== by 0x4CBDAAC: preload_classes(Global_Env*) (vm_init.cpp:342)
> ==22293== by 0x4CBF097: vm_init1(JavaVM_Internal*, JavaVMInitArgs*) (vm_init.cpp:713)
> ==22293== by 0x4C29F54: JNI_CreateJavaVM (jni.cpp:499)
> ==22293== by 0x80499BC: invocation (main.c:658)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 6)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BDC368: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:110)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4BEEDB1: ClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.cpp:398)
> ==22293== by 0x4BF7D7E: BootstrapClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.h:352)
> ==22293== by 0x4BF3F22: BootstrapClassLoader::LoadFromFile(String const*) (classloader.cpp:1659)
> ==22293== by 0x4BF2FE6: BootstrapClassLoader::DoLoadClass(Global_Env*, String const*) (classloader.cpp:1435)
> ==22293== by 0x4BF2D68: ClassLoader::LoadClass(Global_Env*, String const*) (classloader.cpp:1390)
> ==22293== by 0x4BEEC15: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:363)
> ==22293== by 0x4BC8D9E: class_load_verify_prepare_from_jni(Global_Env*, String const*) (Class_File_Loader.cpp:3642)
> ==22293== by 0x4BAA582: class_find_class_from_loader (C_Interface.cpp:1036)
> ==22293== by 0x4C114DA: Java_java_lang_VMClassRegistry_loadBootstrapClass (java_lang_VMClassRegistry.cpp:82)
> ==22293== by 0x786AE35: ???
> 7)
> ==22293== Invalid read of size 4
> ==22293== at 0x4BDC350: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:109)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4C2A5FD: FindClass(JNIEnv_External*, char const*) (jni.cpp:637)
> ==22293== by 0x804AA95: main_runJavaMain (main.c:1232)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 8)
> ==22293== Address 0x70CCE14 is 4 bytes inside a block of size 6 alloc'd
> ==22293== at 0x401B85E: malloc (vg_replace_malloc.c:149)
> ==22293== by 0x4CC83B5: string_get_utf8_chars(ManagedObject*) (vm_strings.cpp:478)
> ==22293== by 0x4CC84D1: string_get_utf8_chars_h(_jobject*) (vm_strings.cpp:492)
> ==22293== by 0x4C2D3E7: GetStringUTFChars(JNIEnv_External*, _jobject*, unsigned char*) (jni.cpp:1179)
> ==22293== by 0x804AA39: main_runJavaMain (main.c:1222)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> ================================================
> To reproduce the results you use these files:
> Empty.java:
> public class Empty {
> public static void main(String[] args) {
> System.loadLibrary("empty");
> nat();
> }
> static native void nat();
> }
> Empty.c:
> #include <jni.h>
> #include "stdlib.h"
> #ifdef __cplusplus
> extern "C" {
> #endif
> JNIEXPORT void JNICALL Java_Empty_nat (JNIEnv *p1, jclass p2) {
> int a;
> if( a == 4 ) a = 3;
>
> }
> #ifdef __cplusplus
> }
> #endif
--
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[jira] Commented: (HARMONY-3715) [drlvm] Memory access errors in
DRLVM
Posted by "Alexey Varlamov (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12491126 ]
Alexey Varlamov commented on HARMONY-3715:
------------------------------------------
Mikhail L,
most such reports are nearly useless without backtrace: uninitialized values come as arguments and it is hard to find real cause.
In particular, those warnings in JET are caused by managed code and I'm not sure how we could trace them without manual debugging.
> [drlvm] Memory access errors in DRLVM
> -------------------------------------
>
> Key: HARMONY-3715
> URL: https://issues.apache.org/jira/browse/HARMONY-3715
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Mikhail Fursov
>
> Here are results from valgrind (http://valgrind.org/) run with DRLVM
> 1)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x4BFF1E9: EncoderBase::Operands::add(EncoderBase::Operand const&) (enc_base.h:546)
> ==21788== by 0x5E8FB40: Jitrino::Ia32::Encoder::emit(unsigned char*, Jitrino::Ia32::Inst const*) (Ia32Encoder.cpp:226)
> ==21788== by 0x5EBEEEB: Jitrino::Ia32::Inst::emit(unsigned char*) (Ia32Inst.cpp:441)
> ==21788== by 0x5E68CB5: Jitrino::Ia32::CodeEmitter::emitCode() (Ia32CodeEmitter.cpp:427)
> ==21788== by 0x5E68500: Jitrino::Ia32::CodeEmitter::runImpl() (Ia32CodeEmitter.cpp:300)
> ==21788== by 0x5EB7F41: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> 2)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F80: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2274)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> ==21788==
> 3)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F65: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2272)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> 4)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x5F0243C: Jitrino::Ia32::StackLayouter::createProlog() (Ia32StackLayout.cpp:332)
> ==22293== by 0x5F01E10: Jitrino::Ia32::StackLayouter::runImpl() (Ia32StackLayout.cpp:181)
> ==22293== by 0x5EB7F49: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==22293== by 0x5F3DAAC: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==22293== by 0x5F3DC2E: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==22293== by 0x5F3DD46: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==22293== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==22293== by 0x4C0538C: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==22293== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==22293== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==22293== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==22293== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==22293==
> 5)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BD22EA: Class::assign_offsets_to_methods(Global_Env*) (Prepare.cpp:833)
> ==22293== by 0x4BD3BBD: Class::prepare(Global_Env*) (Prepare.cpp:1223)
> ==22293== by 0x4BEEC56: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:366)
> ==22293== by 0x4BCB98E: Global_Env::LoadCoreClass(String const*) (Environment.cpp:280)
> ==22293== by 0x4CBCB5E: preload_class(Global_Env*, String*) (vm_init.cpp:72)
> ==22293== by 0x4CBD856: bootstrap_initial_java_classes(Global_Env*) (vm_init.cpp:308)
> ==22293== by 0x4CBDAAC: preload_classes(Global_Env*) (vm_init.cpp:342)
> ==22293== by 0x4CBF097: vm_init1(JavaVM_Internal*, JavaVMInitArgs*) (vm_init.cpp:713)
> ==22293== by 0x4C29F54: JNI_CreateJavaVM (jni.cpp:499)
> ==22293== by 0x80499BC: invocation (main.c:658)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 6)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BDC368: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:110)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4BEEDB1: ClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.cpp:398)
> ==22293== by 0x4BF7D7E: BootstrapClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.h:352)
> ==22293== by 0x4BF3F22: BootstrapClassLoader::LoadFromFile(String const*) (classloader.cpp:1659)
> ==22293== by 0x4BF2FE6: BootstrapClassLoader::DoLoadClass(Global_Env*, String const*) (classloader.cpp:1435)
> ==22293== by 0x4BF2D68: ClassLoader::LoadClass(Global_Env*, String const*) (classloader.cpp:1390)
> ==22293== by 0x4BEEC15: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:363)
> ==22293== by 0x4BC8D9E: class_load_verify_prepare_from_jni(Global_Env*, String const*) (Class_File_Loader.cpp:3642)
> ==22293== by 0x4BAA582: class_find_class_from_loader (C_Interface.cpp:1036)
> ==22293== by 0x4C114DA: Java_java_lang_VMClassRegistry_loadBootstrapClass (java_lang_VMClassRegistry.cpp:82)
> ==22293== by 0x786AE35: ???
> 7)
> ==22293== Invalid read of size 4
> ==22293== at 0x4BDC350: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:109)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4C2A5FD: FindClass(JNIEnv_External*, char const*) (jni.cpp:637)
> ==22293== by 0x804AA95: main_runJavaMain (main.c:1232)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 8)
> ==22293== Address 0x70CCE14 is 4 bytes inside a block of size 6 alloc'd
> ==22293== at 0x401B85E: malloc (vg_replace_malloc.c:149)
> ==22293== by 0x4CC83B5: string_get_utf8_chars(ManagedObject*) (vm_strings.cpp:478)
> ==22293== by 0x4CC84D1: string_get_utf8_chars_h(_jobject*) (vm_strings.cpp:492)
> ==22293== by 0x4C2D3E7: GetStringUTFChars(JNIEnv_External*, _jobject*, unsigned char*) (jni.cpp:1179)
> ==22293== by 0x804AA39: main_runJavaMain (main.c:1222)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> ================================================
> To reproduce the results you use these files:
> Empty.java:
> public class Empty {
> public static void main(String[] args) {
> System.loadLibrary("empty");
> nat();
> }
> static native void nat();
> }
> Empty.c:
> #include <jni.h>
> #include "stdlib.h"
> #ifdef __cplusplus
> extern "C" {
> #endif
> JNIEXPORT void JNICALL Java_Empty_nat (JNIEnv *p1, jclass p2) {
> int a;
> if( a == 4 ) a = 3;
>
> }
> #ifdef __cplusplus
> }
> #endif
--
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[jira] Commented: (HARMONY-3715) [drlvm] Memory access errors in
DRLVM
Posted by "Gregory Shimansky (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HARMONY-3715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12490749 ]
Gregory Shimansky commented on HARMONY-3715:
--------------------------------------------
I am just curious, what is the reason to use a native function which executes an unsafe (depends on unintialized variable) code? Is it intended?
> [drlvm] Memory access errors in DRLVM
> -------------------------------------
>
> Key: HARMONY-3715
> URL: https://issues.apache.org/jira/browse/HARMONY-3715
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Mikhail Fursov
>
> Here are results from valgrind (http://valgrind.org/) run with DRLVM
> 1)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x4BFF1E9: EncoderBase::Operands::add(EncoderBase::Operand const&) (enc_base.h:546)
> ==21788== by 0x5E8FB40: Jitrino::Ia32::Encoder::emit(unsigned char*, Jitrino::Ia32::Inst const*) (Ia32Encoder.cpp:226)
> ==21788== by 0x5EBEEEB: Jitrino::Ia32::Inst::emit(unsigned char*) (Ia32Inst.cpp:441)
> ==21788== by 0x5E68CB5: Jitrino::Ia32::CodeEmitter::emitCode() (Ia32CodeEmitter.cpp:427)
> ==21788== by 0x5E68500: Jitrino::Ia32::CodeEmitter::runImpl() (Ia32CodeEmitter.cpp:300)
> ==21788== by 0x5EB7F41: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> 2)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F80: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2274)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> ==21788==
> 3)
> ==21788== Conditional jump or move depends on uninitialised value(s)
> ==21788== at 0x5EB7F65: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2272)
> ==21788== by 0x5F3DAA4: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==21788== by 0x5F3DC26: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==21788== by 0x5F3DD3E: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==21788== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==21788== by 0x4C05384: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==21788== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==21788== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==21788== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==21788== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==21788== by 0x5B5FBF5: eb_profiler_sync_mode_callback(void*) (EBProfileCollector.cpp:91)
> ==21788== by 0x4441039: ???
> 4)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x5F0243C: Jitrino::Ia32::StackLayouter::createProlog() (Ia32StackLayout.cpp:332)
> ==22293== by 0x5F01E10: Jitrino::Ia32::StackLayouter::runImpl() (Ia32StackLayout.cpp:181)
> ==22293== by 0x5EB7F49: Jitrino::Ia32::SessionAction::run() (Ia32IRManager.cpp:2269)
> ==22293== by 0x5F3DAAC: Jitrino::runPipeline(Jitrino::CompilationContext*) (Jitrino.cpp:227)
> ==22293== by 0x5F3DC2E: Jitrino::compileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:262)
> ==22293== by 0x5F3DD46: Jitrino::Jitrino::CompileMethod(Jitrino::CompilationContext*) (Jitrino.cpp:287)
> ==22293== by 0x5E2D144: JIT_compile_method_with_params (DrlJITInterface.cpp:279)
> ==22293== by 0x4C0538C: Dll_JIT::compile_method_with_params(void*, Method*, OpenMethodExecutionParams) (dll_jit_intf.h:86)
> ==22293== by 0x4BFC8D6: compile_do_compilation_jit(Method*, JIT*) (compile.cpp:657)
> ==22293== by 0x4BADDBE: vm_compile_method (C_Interface.cpp:2492)
> ==22293== by 0x5B56F66: DrlEMImpl::methodProfileIsReady(MethodProfile*) (DrlEMImpl.cpp:772)
> ==22293== by 0x5B6086E: EBProfileCollector::syncModeJitCallback(MethodProfile*) (EBProfileCollector.cpp:191)
> ==22293==
> 5)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BD22EA: Class::assign_offsets_to_methods(Global_Env*) (Prepare.cpp:833)
> ==22293== by 0x4BD3BBD: Class::prepare(Global_Env*) (Prepare.cpp:1223)
> ==22293== by 0x4BEEC56: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:366)
> ==22293== by 0x4BCB98E: Global_Env::LoadCoreClass(String const*) (Environment.cpp:280)
> ==22293== by 0x4CBCB5E: preload_class(Global_Env*, String*) (vm_init.cpp:72)
> ==22293== by 0x4CBD856: bootstrap_initial_java_classes(Global_Env*) (vm_init.cpp:308)
> ==22293== by 0x4CBDAAC: preload_classes(Global_Env*) (vm_init.cpp:342)
> ==22293== by 0x4CBF097: vm_init1(JavaVM_Internal*, JavaVMInitArgs*) (vm_init.cpp:713)
> ==22293== by 0x4C29F54: JNI_CreateJavaVM (jni.cpp:499)
> ==22293== by 0x80499BC: invocation (main.c:658)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 6)
> ==22293== Conditional jump or move depends on uninitialised value(s)
> ==22293== at 0x4BDC368: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:110)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4BEEDB1: ClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.cpp:398)
> ==22293== by 0x4BF7D7E: BootstrapClassLoader::ReportFailedClass(char const*, char const*, std::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >&) (classloader.h:352)
> ==22293== by 0x4BF3F22: BootstrapClassLoader::LoadFromFile(String const*) (classloader.cpp:1659)
> ==22293== by 0x4BF2FE6: BootstrapClassLoader::DoLoadClass(Global_Env*, String const*) (classloader.cpp:1435)
> ==22293== by 0x4BF2D68: ClassLoader::LoadClass(Global_Env*, String const*) (classloader.cpp:1390)
> ==22293== by 0x4BEEC15: ClassLoader::LoadVerifyAndPrepareClass(Global_Env*, String const*) (classloader.cpp:363)
> ==22293== by 0x4BC8D9E: class_load_verify_prepare_from_jni(Global_Env*, String const*) (Class_File_Loader.cpp:3642)
> ==22293== by 0x4BAA582: class_find_class_from_loader (C_Interface.cpp:1036)
> ==22293== by 0x4C114DA: Java_java_lang_VMClassRegistry_loadBootstrapClass (java_lang_VMClassRegistry.cpp:82)
> ==22293== by 0x786AE35: ???
> 7)
> ==22293== Invalid read of size 4
> ==22293== at 0x4BDC350: String_Pool::hash_it(char const*, unsigned*, unsigned*) (String_Pool.cpp:109)
> ==22293== by 0x4BDC7F9: String_Pool::lookup(char const*) (String_Pool.cpp:263)
> ==22293== by 0x4C2A5FD: FindClass(JNIEnv_External*, char const*) (jni.cpp:637)
> ==22293== by 0x804AA95: main_runJavaMain (main.c:1232)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> 8)
> ==22293== Address 0x70CCE14 is 4 bytes inside a block of size 6 alloc'd
> ==22293== at 0x401B85E: malloc (vg_replace_malloc.c:149)
> ==22293== by 0x4CC83B5: string_get_utf8_chars(ManagedObject*) (vm_strings.cpp:478)
> ==22293== by 0x4CC84D1: string_get_utf8_chars_h(_jobject*) (vm_strings.cpp:492)
> ==22293== by 0x4C2D3E7: GetStringUTFChars(JNIEnv_External*, _jobject*, unsigned char*) (jni.cpp:1179)
> ==22293== by 0x804AA39: main_runJavaMain (main.c:1222)
> ==22293== by 0x8049AF0: invocation (main.c:730)
> ==22293== by 0x80490AF: gpProtectedMain (main.c:379)
> ==22293== by 0x804B506: main (cmain.c:147)
> ================================================
> To reproduce the results you use these files:
> Empty.java:
> public class Empty {
> public static void main(String[] args) {
> System.loadLibrary("empty");
> nat();
> }
> static native void nat();
> }
> Empty.c:
> #include <jni.h>
> #include "stdlib.h"
> #ifdef __cplusplus
> extern "C" {
> #endif
> JNIEXPORT void JNICALL Java_Empty_nat (JNIEnv *p1, jclass p2) {
> int a;
> if( a == 4 ) a = 3;
>
> }
> #ifdef __cplusplus
> }
> #endif
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