1WARNING::PROCESS-TRACKING(7stap)              WARNING::PROCESS-TRACKING(7stap)
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NAME

6       warning::process-tracking  - process-tracking facilities are not avail‐
7       able
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DESCRIPTION

12       These errors and warnings occur when the kernel systemtap is running on
13       lacks support for user-space process tracking facilities.
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16   COMPILE-TIME ERROR
17       The error
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19              ERROR: user-space process-tracking facilities not available
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21       occurs  when the script contains a uprobes probe point that the current
22       kernel does not support.
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25   RUNTIME WARNINGS
26       The warning,
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28              WARNING: process-tracking facilities are not available in this kernel
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30       and the related message,
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32              WARNING: cannot track target in process '...'
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34       both occur at runtime when running on a kernel (generally an older ver‐
35       sion)  that  has neither utrace functionality nor an acceptable substi‐
36       tute.
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38       The script should still load and run.  However,  probes  that  rely  on
39       availability of process-tracking facilities will silently fail to trig‐
40       ger.
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RESOLVING THE ISSUE

44       If process-tracking functionality is  absolutely  necessary,  either  a
45       kernel  version  newer  than 3.5 is needed, or an older version must be
46       compiled with appropriate utrace patches.
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SEE ALSO

50       stap(1),
51       error::reporting(7stap)
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55                                              WARNING::PROCESS-TRACKING(7stap)
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