error::process-tracking man page on RedHat

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WARNING::PROCESS-TRACKING(7stap)	      WARNING::PROCESS-TRACKING(7stap)

NAME
       warning::process-tracking  - process-tracking facilities are not avail‐
       able

DESCRIPTION
       These errors and warnings occur when the kernel systemtap is running on
       lacks support for user-space process tracking facilities.

   COMPILE-TIME ERROR
       The error

	      ERROR: user-space process-tracking facilities not available

       occurs  when the script contains a uprobes probe point that the current
       kernel does not support.

   RUNTIME WARNINGS
       The warning,

	      WARNING: process-tracking facilities are not available in this kernel

       and the related message,

	      WARNING: cannot track target in process '...'

       both occur at runtime when running on a kernel (generally an older ver‐
       sion)  that  has neither utrace functionality nor an acceptable substi‐
       tute.

       The script should still load and run.  However,	probes	that  rely  on
       availability of process-tracking facilities will silently fail to trig‐
       ger.

RESOLVING THE ISSUE
       If process-tracking functionality is  absolutely	 necessary,  either  a
       kernel  version	newer  than 3.5 is needed, or an older version must be
       compiled with appropriate utrace patches.

SEE ALSO
       stap(1),
       error::reporting(7stap)

					      WARNING::PROCESS-TRACKING(7stap)
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