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

NAME
       warning::process-tracking - process-tracking facilities are not
       available



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 version)
that has neither utrace functionality nor an acceptable substitute.

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


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)