Issue

• We have crashed our JBoss servers three times due to memory segment faults.
• JBoss is crashing and producing a fatal error and core dump.

• The beginning of Sun JDK/OpenJDK fatal error log shows the following:

  #
  # An unexpected error has been detected by HotSpot Virtual Machine:
  #
  #  SIGSEGV (0xb) at pc=0x00002aaaaafe08b6, pid=9053, tid=1093802304
  #
  # Java VM: Java HotSpot(TM) 64-Bit Server VM (1.5.0_19-b02 mixed mode)
  # Problematic frame:
  # V  [libjvm.so+0x5248b6]
  #
  
  ---------------  T H R E A D  ---------------
  
  Current thread (0x00002aab84d33400):  JavaThread "CompilerThread1" daemon [_thread_in_native, id=9073]
  
  siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x0000000000000008
  

• The IBM javacore shows the following:

  1XMCURTHDINFO  Current Thread Details
  NULL           ----------------------
  3XMTHREADINFO      "JIT Compilation Thread" TID:0x30EE1D00, j9thread_t:0x30116E4C, state:R, prio=10
  3XMTHREADINFO1            (native thread ID:0x3700b7, native priority:0xb, native policy:UNKNOWN)