On Mon, Mar 28, 2011 at 11:44 AM, Christian Thalinger < [email protected]> wrote:
> -XX:+UseSerialGC. It seems my previous email didn't make it to the list. > This worked. Well sort of. The JVM doesn't crash because of a GC issue now. However, this uncovered another issue. The JVM crashes when doing an indy dispatch I think. The crash log: # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007fd2186de2a7, pid=15004, tid=140540348679936 # # JRE version: 7.0 # Java VM: OpenJDK 64-Bit Server VM (21.0-b01 mixed mode linux-amd64 compressed oops) # Problematic frame: # V [libjvm.so+0x5ad2a7] Klass::external_name() const+0x47 # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # --------------- T H R E A D --------------- Current thread (0x0000000001a73000): JavaThread "MainThread" [_thread_in_vm, id=15005, stack(0x00007fd2197f4000,0x00007fd2198f5000)] siginfo:si_signo=SIGSEGV: si_errno=0, si_code=128 (), si_addr=0x0000000000000000 Registers: RAX=0x000000005f0a105f, RBX=0x00000000fc44dbd0, RCX=0x0000000000000000, RDX=0x00007fd2198efee0 RSP=0x00000000dc6ae130, RBP=0x00000000dc6ae180, RSI=0x00007fd218953015, RDI=0xbf8101c00700997f R8 =0x0000000000000002, R9 =0x0000000000000002, R10=0x00007fd218d15ac0, R11=0x00007fd213f24df0 R12=0x00007fd218953015, R13=0x00000000fc44dbc0, R14=0x00007fd2198eff50, R15=0x0000000001a73000 RIP=0x00007fd2186de2a7, EFLAGS=0x0000000000010206, CSGSFS=0x0000000000000033, ERR=0x0000000000000000 TRAPNO=0x000000000000000d Top of Stack: (sp=0x00000000dc6ae130) 0x00000000dc6ae130: dc6ad9b000000000 0000000000000005 0x00000000dc6ae140: dc6ae118fb233430 0000000000000005 0x00000000dc6ae150: e595de68fb208800 6c010035fd182600 0x00000000dc6ae160: 0000000001a73000 00007fd218953015 0x00000000dc6ae170: 00000000fc44dbc0 00007fd2198eff50 0x00000000dc6ae180: 00000000dc6ae1f0 00007fd2185f5724 0x00000000dc6ae190: 0000000001a70530 0000000001a735d0 0x00000000dc6ae1a0: 0000000001a735e0 0000000001a739b8 0x00000000dc6ae1b0: 0000000001a73000 0000000000000005 0x00000000dc6ae1c0: 0000000001a73000 0000001a00000000 0x00000000dc6ae1d0: 0000000000000000 00000000fc44dbb8 0x00000000dc6ae1e0: 0000000000000000 00000000fc44dbc0 0x00000000dc6ae1f0: 00007fd2198eff20 00007fd213e23a1c 0x00000000dc6ae200: 00007fd213e239da 0000000000000001 0x00000000dc6ae210: 00000006faea3dd8 0000000000000000 0x00000000dc6ae220: 0000000000000000 0000000000000000 0x00000000dc6ae230: 0000000000000005 0000000ffb98f9e0 0x00000000dc6ae240: e5dedb40e5dedb18 e5dedb90e5dedb68 0x00000000dc6ae250: e5dedbe0e5dedbb8 dc6adfa0e5dedd08 0x00000000dc6ae260: 00000000dc6adfa0 0000000000000005 0x00000000dc6ae270: 0000002bfb990948 e5dedd90e5dedd70 0x00000000dc6ae280: e5deddd0e5deddb0 e5dede10e5deddf0 0x00000000dc6ae290: dc6adfa0e5dedf28 00000000dc6adfa0 0x00000000dc6ae2a0: 0000000000000005 0000002cfb991f90 0x00000000dc6ae2b0: e5dee568e5dee358 e5dee988e5dee778 0x00000000dc6ae2c0: e5deeda8e5deeb98 dc6adfa0e5def0b0 0x00000000dc6ae2d0: 00000000dc6adfa0 0000000000000005 0x00000000dc6ae2e0: 00000000fb995a90 0000000800000000 0x00000000dc6ae2f0: dc6adfa000000000 00000000dc6ae308 0x00000000dc6ae300: 0000000000000000 0000000000000005 0x00000000dc6ae310: 00000008faed3040 dc6ae8d000000008 0x00000000dc6ae320: 0000000000000001 00000168fae011a0 Instructions: (pc=0x00007fd2186de2a7) 0x00007fd2186de287: d8 31 c0 8b 47 08 85 c0 0f 8e cb 00 00 00 48 83 0x00007fd2186de297: bf f8 00 00 00 00 0f 84 bd 00 00 00 48 8b 7f 68 0x00007fd2186de2a7: 48 8b 17 48 89 d0 83 e0 07 48 83 f8 01 0f 84 fe 0x00007fd2186de2b7: 00 00 00 48 89 d0 83 e0 03 48 83 f8 03 0f 84 d6 Register to memory mapping: RAX=0x000000005f0a105f is an unknown value RBX=0x00000000fc44dbd0 is an oop {constMethod} - klass: {other class} - method: 0x00000000fc44ded8 {method} '_qformat$25' '(Lorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;' in 'difflib$py' - exceptions: 0x00000000fae01d30 bci_from(0xfc44dbd0) = 264; print_codes(): RCX=0x0000000000000000 is an unknown value RDX=0x00007fd2198efee0 is pointing into the stack for thread: 0x0000000001a73000 RSP= [error occurred during error reporting (printing register info), id 0xb] Stack: [0x00007fd2197f4000,0x00007fd2198f5000], sp=0x00000000dc6ae130, free space=18014261266660072k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x5ad2a7] Klass::external_name() const+0x47 V [libjvm.so+0x4c4724] InterpreterRuntime::create_klass_exception(JavaThread*, char*, oopDesc*)+0x74 Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) j difflib$py._qformat$25(Lorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+248 j difflib$py.call_function(ILorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+320 J org.python.core.PyTableCode.call(Lorg/python/core/ThreadState;Lorg/python/core/PyFrame;Lorg/python/core/PyObject;)Lorg/python/core/PyObject; j org.python.core.PyGenerator.__iternext__(Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+63 j org.python.core.PyGenerator.__iternext__()Lorg/python/core/PyObject;+4 j difflib$py._fancy_replace$23(Lorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+2658 j difflib$py.call_function(ILorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+312 J org.python.core.PyTableCode.call(Lorg/python/core/ThreadState;Lorg/python/core/PyFrame;Lorg/python/core/PyObject;)Lorg/python/core/PyObject; j org.python.core.PyGenerator.__iternext__(Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+63 j org.python.core.PyGenerator.__iternext__()Lorg/python/core/PyObject;+4 j difflib$py.compare$20(Lorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+815 j difflib$py.call_function(ILorg/python/core/PyFrame;Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+300 J org.python.core.PyTableCode.call(Lorg/python/core/ThreadState;Lorg/python/core/PyFrame;Lorg/python/core/PyObject;)Lorg/python/core/PyObject; j org.python.core.PyGenerator.__iternext__(Lorg/python/core/ThreadState;)Lorg/python/core/PyObject;+63 j org.python.core.PyGenerator.__iternext__()Lorg/python/core/PyObject;+4 J org.python.core.WrappedIterIterator.hasNext()Z The complete log is pasted here: http://pylonshq.com/pasties/b8c342db8d9a342d058584a958d434a4 The point where it crashes: (at the function _qformat) is where the JVM should actually invoke via invokedynamic. I have tested this functionality to work with simple tests, but when it comes to this class, it fails. What is more weird is that in my machine (using a 32bit JVM) this test cases causes the cpu to run at 100% and does not return. In my other machine, using a 64-bit JVM, it crashes and produces a log atleast. Any pointers on how to debug this? Thanks! Shashank -- Christian > > _______________________________________________ > mlvm-dev mailing list > [email protected] > http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev > >
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