https://bugs.kde.org/show_bug.cgi?id=369456

            Bug ID: 369456
           Summary: callgrind_control failed to find an active callgrind
                    run.
           Product: valgrind
           Version: 3.11.0
          Platform: Homebrew (Mac OS X)
                OS: OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: callgrind
          Assignee: josef.weidendor...@gmx.de
          Reporter: alex_hit...@ngs.ru

I'm running callgrind with:
$ valgrind --tool=callgrind  --instr-atstart=no ./program_name

Then trying to enable profiling from other terminal:
$ callgrind_control -i on
No active callgrind runs detected.

The same with PID:
$ callgrind_control -i on 80627
Error: Callgrind task with PID/name '80627' not detected.

Valgrind in process list:
$ ps
  PID TTY           TIME CMD
 1021 ttys000    0:00.32 -bash
80627 ttys000    0:56.54 valgrind --tool=callgrind --instr-atstart=no
./program_name
 5280 ttys002    0:00.24 -bash

Some additional info:
uname -a
Darwin macpc-1124 14.5.0 Darwin Kernel Version 14.5.0: Mon Aug 29 21:14:16 PDT
2016; root:xnu-2782.50.6~1/RELEASE_X86_64 x86_64

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