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)