WARNING::PROCESS-TRACKING - Online Linux Manual PageSection : 7stap
NAMEwarning::process-tracking − process-tracking facilities are not available
DESCRIPTIONThese errors and warnings occur when the kernel systemtap is running on lacks support for user-space process tracking facilities.
COMPILE-TIME ERRORThe 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 WARNINGSThe 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 ISSUEIf 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 ALSOstap(1),
error::reporting(7stap)
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