Invalid class_name argument is passed in 'hotspot:::monitor-waited' probe.

Result of running ./Monitors_error.d is 'invalid address' error:
 dtrace: error on enabled probe ID 3 (ID 34967:
hotspot580:libjvm.so:__1cSObjectSynchronizerEwait6FnGHandle_xpnGThread__v_:monitor-waited):
 invalid address (0xc000) in action #5 at DIF offset 28

Result of running ./Monitors_safe.d:
 monitor-waited: thread_id=1, monitor_id=136, class_name_len=-2178736164
                                              ^^^^^^^^^^^^^^^^^^^^^^^^

Result of running ./Monitors_death.d is OS hangs and as sequence reboot of
the system.

Tested jdk: /net/cocoa.east/export/jdk-6.0/solaris-sparcv9/

To reproduce run:
 # java -d64 -XX:+UnlockDiagnosticVMOptions -XX:+PauseAtStartup Monitors001 & echo $!

 # ./Monitors_safe.d -p JAVA_PID


This bug is reproduced with all modes: -Xint, -Xmixed, -Xcomp.

This bug is not reproduced with 32bit version of jdk.

Looks like it is not duplicate of 6289317.