Can't print assembly code when running benchmarks on Aarch64

[20152101001]

When using Maxine vm on Aarch64，I ran some benchmark such as scimark and Dacapo. When I tried to run the benchmark with using option C1X:+PrintAssembly or -C1X:+PrintCFGToFile, it will show error:

FatalError: stack reset position two Compilation of java.io.UnixFileSystem.checkAccess(File, int) by T1X failed (final attempt)

The detailed error log is upload as an attached file. error message.txt

[kotselidis]

Thank you for reporting this issue, @gigiblender can you please check if we can replicate this behaviour?

[gigiblender]

@kotselidis yes, I will have a look in the following days

[gigiblender]

The problem is replicable on Aarch64. The issue is generated by a compilation failure of UnixFileSystem::checkAccess caused by an NPE in C1X. T1X is expected to fail because it cannot compile methods annotated with FOLD.

C1X fails with the stack trace below. C1X calls the ObjdumpDisassembler::disassemble method which uses a temporary file to get the output of objdump. In order to create the temporary file, the class initializer of java.io.File$TempDirectory.<clinit> is called, which in turn will initialize an instance of SecureRandom. The initialization of SecureRandom will trigger inside the current compilation another compilation of UnixFileSystem::checkAccess. The second compilation is successful, but when it tries to disassemble, it tries to create another temporary file and accesses the random field of java.io.File$TempDirectory.<clinit> still in the context of the SecureRandom.<init> (which is not yet initialized).

main[id=1]: C1X: Failed java.io.UnixFileSystem.checkAccess(File, int)
main[id=1]: Compilation of java.io.UnixFileSystem.checkAccess(File, int) by C1X failed with:
com.sun.cri.ci.CiBailout: Exception while compiling: java.io.UnixFileSystem.checkAccess(File, int)
    at com.sun.c1x.C1XCompilation.compile(C1XCompilation.java:229)
    at com.sun.c1x.C1XCompiler.compileMethod(C1XCompiler.java:108)
    at com.oracle.max.vm.ext.c1x.C1X.compile(C1X.java:257)
    at com.sun.max.vm.compiler.target.Compilation.compile(Compilation.java:295)
    at com.sun.max.vm.compiler.CompilationBroker.compile(CompilationBroker.java:490)
    at com.sun.max.vm.compiler.CompilationBroker.compile(CompilationBroker.java:432) --> trigger another compilation of UnixFileSystem.checkAccess
    at com.sun.max.vm.actor.member.ClassMethodActor.makeTargetMethod(ClassMethodActor.java:462)
    at com.sun.max.vm.actor.member.ClassMethodActor.makeTargetMethod(ClassMethodActor.java:442)
    at com.sun.max.vm.compiler.target.Stubs.resolveVirtualCall(Stubs.java:379)
    at java.io.File.canRead(File.java:768) --> lookup UnixFileSystem.checkAccess
    at sun.security.provider.NativePRNG$1.run(NativePRNG.java:151)
    at sun.security.provider.NativePRNG$1.run(NativePRNG.java:130)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.security.provider.NativePRNG.initIO(NativePRNG.java:129)
    at sun.security.provider.NativePRNG.<clinit>(NativePRNG.java:93)
    at com.sun.max.vm.actor.member.MethodActor.invoke(MethodActor.java:491)
    at com.sun.max.vm.actor.holder.ClassActor.callInitializer(ClassActor.java:1638)
    at com.sun.max.vm.actor.holder.ClassActor.makeInitialized(ClassActor.java:1742)
    at sun.security.provider.SunEntries.putEntries(SunEntries.java:101)
    at sun.security.provider.Sun.<init>(Sun.java:56)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at java.lang.Class.newInstance(Class.java:442)
    at sun.security.jca.ProviderConfig$2.run(ProviderConfig.java:221)
    at sun.security.jca.ProviderConfig$2.run(ProviderConfig.java:206)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.java:206)
    at sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:187)
    at sun.security.jca.ProviderList.getProvider(ProviderList.java:233)
    at sun.security.jca.ProviderList$3.get(ProviderList.java:148)
    at sun.security.jca.ProviderList$3.get(ProviderList.java:143)
    at java.util.AbstractList$Itr.next(AbstractList.java:358)
    at java.security.SecureRandom.getPrngAlgorithm(SecureRandom.java:558)
    at java.security.SecureRandom.getDefaultPRNG(SecureRandom.java:194)
    at java.security.SecureRandom.<init>(SecureRandom.java:162) --> initialize the `random` field of `File$TempDirectory`
    at java.io.File$TempDirectory.<clinit>(File.java:1901) --> class initializer for File$TempDirectory
    at com.sun.max.vm.actor.member.MethodActor.invoke(MethodActor.java:491)
    at com.sun.max.vm.actor.holder.ClassActor.callInitializer(ClassActor.java:1638)
    at com.sun.max.vm.actor.holder.ClassActor.makeInitialized(ClassActor.java:1742)
    at com.sun.max.vm.runtime.Snippets.makeClassInitialized(Snippets.java:446)
    at com.oracle.max.vm.ext.maxri.MaxXirGenerator$RuntimeCalls.resolveStaticTuple(MaxXirGenerator.java:2119)
    at java.io.File.createTempFile(File.java:2006)
    at java.io.File.createTempFile(File.java:2070)  ---> try to create the output file for `objdump`
    at com.oracle.max.vm.ext.maxri.ObjdumpDisassembler.disassemble(ObjdumpDisassembler.java:52) ---> call to disassembler
    at com.oracle.max.vm.ext.maxri.MaxRuntime.disassemble(MaxRuntime.java:228)
    at com.oracle.max.vm.ext.maxri.MaxRuntime.disassemble(MaxRuntime.java:221)
    at com.sun.c1x.asm.TargetMethodAssembler.finishTargetMethod(TargetMethodAssembler.java:130)
    at com.sun.c1x.C1XCompilation.emitCode(C1XCompilation.java:293)
    at com.sun.c1x.C1XCompilation.compile(C1XCompilation.java:221)
    at com.sun.c1x.C1XCompiler.compileMethod(C1XCompiler.java:108)   ---> first compilation of `UnixFileSystem.checkAccess`
    at com.oracle.max.vm.ext.c1x.C1X.compile(C1X.java:257)
    at com.sun.max.vm.compiler.target.Compilation.compile(Compilation.java:295)
    at com.sun.max.vm.compiler.CompilationBroker.compile(CompilationBroker.java:490)
    at com.sun.max.vm.compiler.CompilationBroker.compile(CompilationBroker.java:432)
    at com.sun.max.vm.actor.member.ClassMethodActor.makeTargetMethod(ClassMethodActor.java:462)
    at com.sun.max.vm.actor.member.ClassMethodActor.makeTargetMethod(ClassMethodActor.java:442)
    at com.sun.max.vm.compiler.target.Stubs.patchStaticTrampolineCallSiteAarch64(Stubs.java:917)
    at java.lang.invoke.DirectMethodHandle.shouldBeInitialized(DirectMethodHandle.java:319)
    at java.lang.invoke.DirectMethodHandle.preparedLambdaForm(DirectMethodHandle.java:178)
    at java.lang.invoke.DirectMethodHandle.make(DirectMethodHandle.java:89)
    at java.lang.invoke.MethodHandles$Lookup.getDirectMethodCommon(MethodHandles.java:1660)
    at java.lang.invoke.MethodHandles$Lookup.getDirectMethod(MethodHandles.java:1605)
    at java.lang.invoke.MethodHandles$Lookup.findStatic(MethodHandles.java:781)
    at java.lang.invoke.BoundMethodHandle$Factory.makeCbmhCtor(BoundMethodHandle.java:818)
    at java.lang.invoke.BoundMethodHandle$Factory.makeCtors(BoundMethodHandle.java:763)
    at java.lang.invoke.BoundMethodHandle$SpeciesData.initForBootstrap(BoundMethodHandle.java:361)
    at java.lang.invoke.BoundMethodHandle$SpeciesData.<clinit>(BoundMethodHandle.java:426)
    at com.sun.max.vm.actor.member.MethodActor.invoke(MethodActor.java:491)
    at com.sun.max.vm.actor.holder.ClassActor.callInitializer(ClassActor.java:1638)
    at com.sun.max.vm.actor.holder.ClassActor.makeInitialized(ClassActor.java:1742)
    at com.sun.max.vm.runtime.Snippets.makeClassInitialized(Snippets.java:446)
    at com.sun.max.vm.runtime.Snippets.makeHolderInitialized(Snippets.java:435)
    at com.oracle.max.vm.ext.t1x.T1XTemplateSource.resolveAndGetStaticReference(T1XTemplateSource.java:1763)
    at java.lang.invoke.BoundMethodHandle.<clinit>(BoundMethodHandle.java:830)
    at com.sun.max.vm.actor.member.MethodActor.invoke(MethodActor.java:491)
    at com.sun.max.vm.actor.holder.ClassActor.callInitializer(ClassActor.java:1638)
    at com.sun.max.vm.actor.holder.ClassActor.makeInitialized(ClassActor.java:1742)
    at com.sun.max.vm.actor.holder.ClassActor.makeInitialized(ClassActor.java:1735)
    at java.lang.invoke.LambdaForm.createIdentityForms(LambdaForm.java:1778)
    at java.lang.invoke.LambdaForm.<clinit>(LambdaForm.java:1833)
    at com.sun.max.vm.actor.member.MethodActor.invoke(MethodActor.java:491)
    at com.sun.max.vm.actor.holder.ClassActor.callInitializer(ClassActor.java:1638)
    at com.sun.max.vm.run.java.JavaRunScheme.initialize(JavaRunScheme.java:239)
    at com.sun.max.vm.VMConfiguration.initializeSchemes(VMConfiguration.java:254)
    at com.sun.max.vm.run.java.JavaRunScheme.initializeBasicFeatures(JavaRunScheme.java:296)
    at com.sun.max.vm.run.java.JavaRunScheme.run(JavaRunScheme.java:322)
    at com.sun.max.vm.thread.VmThread.executeRunnable(VmThread.java:505)
    at com.sun.max.vm.thread.VmThread.run(VmThread.java:684)
Caused by: java.lang.NullPointerException
    at java.io.File$TempDirectory.generateFile(File.java:1905) --> we are still in the class initializer of File$TempDirectory and get a  NPE
    at java.io.File.createTempFile(File.java:2010)
    at java.io.File.createTempFile(File.java:2070) --> try to create a second temporary file
    at com.oracle.max.vm.ext.maxri.ObjdumpDisassembler.disassemble(ObjdumpDisassembler.java:52)
    at com.oracle.max.vm.ext.maxri.MaxRuntime.disassemble(MaxRuntime.java:228)
    at com.oracle.max.vm.ext.maxri.MaxRuntime.disassemble(MaxRuntime.java:221) --> call a second time the disassembler 
    at com.sun.c1x.asm.TargetMethodAssembler.finishTargetMethod(TargetMethodAssembler.java:130) --> second compilation of UnixFileSystem.checkAccess finishes
    at com.sun.c1x.C1XCompilation.emitCode(C1XCompilation.java:293)
    at com.sun.c1x.C1XCompilation.compile(C1XCompilation.java:221)
    ... 86 more

The reason the issue is not present on x86 is that for this architecture we use the built-in Maxine disassembler

[gigiblender]

@20152101001, regarding this issue, I do not think Maxine ever supported at runtime the options C1X:+PrintAssembly or -C1X:+PrintCFGToFile for targets other than x86.

However, you should be able to generate T1X/C1X CFGs and aarch64 assembly with offline compilation.