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)