I'll fix it in RHEL6 as regression, but it RHEL7 hrSWRunPath of kernel threads will be empty - there is no executable which is being run. Name of the thread is available in hrSWRunName.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.