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
              situations are out of systemtap's control, and result in
              some probes not receiving any hits.  This may be caused by
              temporary 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
              possible 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).


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

SEE ALSO         top

       http://sourceware.org/systemtap/wiki/TipExhaustedResourceErrors ,

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 systemtap@sourceware.org.
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/systemtap.git⟩ on 2021-08-27.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2021-08-26.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
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       (which is not part of the original manual page), send a mail to


Pages that refer to this page: error::pass5(7stap)