Man pages sections > man7 > error::process-tracking

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

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)
Debian Sid