WARNING::PROCESS-TRACKING

Section: Misc. Reference Manual Pages (7stap)
Index Return to Main Contents
 

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)


 

Index

NAME
DESCRIPTION
COMPILE-TIME ERROR
RUNTIME WARNINGS
RESOLVING THE ISSUE
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 23:19:57 GMT, August 08, 2014