Java crash in MinINode::Ideal(PhaseGVN*, bool)

Issue

• Example 1: JVM crash in C2 CompilerThread:

Stack: [0x00007fdf78a12000,0x00007fdf78b13000],  sp=0x00007fdf78b0e110,  free space=1008k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x2f01c4]  MinINode::Ideal(PhaseGVN*, bool)+0x4e4
V  [libjvm.so+0x99644e]  PhaseIterGVN::transform_old(Node*)+0x6e
V  [libjvm.so+0x9942cc]  PhaseIterGVN::optimize()+0x1ac
V  [libjvm.so+0x4b1562]  Compile::Optimize()+0xab2
V  [libjvm.so+0x4b326d]  Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool)+0x10cd
V  [libjvm.so+0x4088a0]  C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0x1d0
V  [libjvm.so+0x4babb2]  CompileBroker::invoke_compiler_on_method(CompileTask*)+0x8d2
V  [libjvm.so+0x4bb880]  CompileBroker::compiler_thread_loop()+0x510
V  [libjvm.so+0xb032e2]  JavaThread::thread_main_inner()+0x212
V  [libjvm.so+0x93c7d2]  java_start(Thread*)+0xf2
C  [libpthread.so.0+0x7df5]  start_thread+0xc5


Current CompileTask:
C2:23591688 69216       4       com.example.MyHandler::handleSomething (1264 bytes)

• Example 2: JVM crash in C2 CompilerThread:

Stack: [0x00007f9dda31c000,0x00007f9dda41c000],  sp=0x00007f9dda416c70,  free space=1003k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x64a81e]  IfNode::Ideal(PhaseGVN*, bool)+0x112e
V  [libjvm.so+0x9bed3e]  PhaseIterGVN::transform_old(Node*)+0x6e
V  [libjvm.so+0x9bcd28]  PhaseIterGVN::optimize()+0xf8
V  [libjvm.so+0x860563]  PhaseIdealLoop::build_and_optimize(bool, bool)+0xa03
V  [libjvm.so+0x49eb91]  Compile::Optimize()+0x451
V  [libjvm.so+0x4a077b]  Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool)+0xdab
V  [libjvm.so+0x3f1656]  C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0xb6
V  [libjvm.so+0x4a9c05]  CompileBroker::invoke_compiler_on_method(CompileTask*)+0x895
V  [libjvm.so+0x4abfe8]  CompileBroker::compiler_thread_loop()+0x528
V  [libjvm.so+0xb4a4fc]  JavaThread::thread_main_inner()+0x20c
V  [libjvm.so+0xb4a869]  JavaThread::run()+0x309
V  [libjvm.so+0x96a402]  java_start(Thread*)+0x162
C  [libpthread.so.0+0x81ca]  start_thread+0xea


Current CompileTask:
C2:84882674 11136       4       java.lang.Class::getMethod0 (40 bytes)