Parsing "/proc/self/stat" by simply breaking the line on spaces will fall down if the executable name contains spaces.

This is a problem in src/jdk.management/unix/native/libmanagement_ext/OperatingSystemImpl.c where the committed virtual memory size (shown by OperatingSystem MXBean) is extracted. An exec name with a space means we return the wrong value.

UnixOperatingSystem.c / vread_statdata() does better, it uses strrchr() to find the last occurring ')'.