Jason Tedor 00a8b8799f Fix control group pattern
The file /proc/self/cgroup lists the control groups to which the process
belongs. This file is a colon separated list of three fields:
 1. a hierarchy ID number
 2. a comma-separated list of hierarchies
 3. the pathname of the control group in the hierarchy

The regex pattern for this contains a bug for the second field. It
allows one or two entries in the comma-separated list, but not
more. This commit fixes the pattern to allow one or more entires in the
comma-separated list.

Relates #23219
2017-02-16 15:31:18 -05:00
..
2017-02-16 15:31:18 -05:00