1WARNING::PROCESS-TRACKING(7stap) WARNING::PROCESS-TRACKING(7stap)
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6 warning::process-tracking - process-tracking facilities are not avail‐
7 able
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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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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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50 stap(1),
51 error::reporting(7stap)
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55 WARNING::PROCESS-TRACKING(7stap)