Public bug reported:

The newer 4.8 kernel requires CAP_SYS_ADMIN or
/proc/sys/kernel/perf_event_paranoid to be set to below 2 for --perf to
work as a normal unprivileged user.  The current error message is
misleading as it states that perf is not implemented. Instead it should
explain why perf cannot be used and the steps required to make it work
as an unprivileged user.

** Affects: stress-ng (Ubuntu)
     Importance: Low
     Assignee: Colin Ian King (colin-king)
         Status: In Progress

** Changed in: stress-ng (Ubuntu)
       Status: New => In Progress

** Changed in: stress-ng (Ubuntu)
   Importance: Undecided => Medium

** Changed in: stress-ng (Ubuntu)
     Assignee: (unassigned) => Colin Ian King (colin-king)

** Changed in: stress-ng (Ubuntu)
   Importance: Medium => Low

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  stress-ng --perf does not work with 4.8 kernel as a normal user

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