The two patches attached resolve the exit-hang (of OOo) bug for me. The first

The two patches attached resolve the exit-hang (of OOo) bug for me.  The first
fixes getppid(), and the second fixes the next bug which is revealed
once getppid() does what LinuxThreads wants;  LinuxThreads uses SIGKILL
to kill off stray threads, but if we send naked SIGKILLs to Valgrind
threads, they'll die without cleaning up or informing anyone of their
death, which means that they're waited on forever.

ADAPTED FROM CVS HEAD

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3449