Gary Benson wrote:

Hi all,

When Zero is running with Shark enabled threads can be left with
their _do_not_unlock_if_synchronized flag incorrectly set.  This
flag is unnecessary in Zero, and should have been removed as part
of the fix for 6908267 but sadly I missed it!

  http://cr.openjdk.java.net/~gbenson/zero-locking-fix/

I don't have a bug id for this.

Cheers,
Gary