WARNING::PROCESS-TRACKING
Section: Misc. Reference Manual Pages (7stap)
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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
-
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