warning::pass5(7stap) — Linux manual page

ERROR::PASS5(7stap)                                  ERROR::PASS5(7stap)

NAME         top

       warning::pass5 - systemtap pass-5 warnings

DESCRIPTION         top

       Warnings that occur during pass 5 (execution) can have a variety
       of causes.

       probe insertion errors
              With any of the systemtap runtimes, it may be possible
              that the backends are unable to insert probe points
              requested by the systemtap script.  For example, you may
              see errors such as

              WARNING: probe [...] registration error (rc -524)

              (524 is a kernel error code for ENOTSUPP).  These situa‐
              tions are out of systemtap's control, and result in some
              probes not receiving any hits.  This may be caused by tem‐
              porary resource constraints or permanent problems.  One
              common permanent problem is such a probe point being
              placed at instructions that the runtime (kernel kprobes,
              uprobes or dyninst) cannot decode or intercept.  A possi‐
              ble workaround is to move the probe points slightly in the
              script, so as to target a nearby statement, or a caller,
              or a callee.  See also error::dwarf(7stap).

GATHERING MORE INFORMATION         top

       Increasing the verbosity of pass-5 with an option such as --vp
       00001 can help pinpoint the problem.

SEE ALSO         top

       stap(1),
       http://sourceware.org/systemtap/wiki/TipExhaustedResourceErrors ,
       error::pass5(7stap),
       error::reporting(7stap)
       error::dwarf(7stap)

COLOPHON         top

       This page is part of the systemtap (a tracing and live-system
       analysis tool) project.  Information about the project can be
       found at ⟨https://sourceware.org/systemtap/⟩.  If you have a bug
       report for this manual page, send it to [email protected].
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/systemtap.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       [email protected]

                                                     ERROR::PASS5(7stap)

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