NAME | DESCRIPTION | GATHERING MORE INFORMATION | SEE ALSO | COLOPHON

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

NAME         top

       error::pass5 - systemtap pass-5 errors

DESCRIPTION         top

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

       exceptional events during script execution
              The systemtap translator and runtime include numerous error
              checks that aim to protect the systems and the users from
              mistakes or transient conditions.  The script may deliberately
              call the error() tapset function to signal a problem.  Some
              memory needed for accessing $context variables may be
              temporarily unavailable.  Consider using the try/catch
              construct to wrap script fragments in exception-handling code.
              Consider using the stap --suppress-handler-errors or stap
              --skip-badvars option.

       resource exhaustion
              One of several types of space or time resource limits may be
              exceeded by the script, including system overload, too many
              tuples to be stored in an array, etc.  Some of the error
              messages identify the constraint by macro name, which may be
              individually raised.  Consider using the stap --suppress-
              handler-errors and/or stap -g --suppress-time-limits options.
              Extend or disable individual resource limits using the stap
              -DSOME_LIMIT=NNNN option.

       remote execution server problems
              If you use the stap --remote option to direct a systemtap
              script to be executed somewhere else, ensure that an SSH
              connection may be made to the remote host, and that it has the
              current systemtap runtime installed & available.

       installation/permission problems
              It is possible that your installation of systemtap was not
              correctly installed.  For example, the /usr/bin/staprun
              program may lack the necessary setuid permissions, or your
              invoking userid might not have sufficient privileges (root, or
              stapusr and related group memberships).  Environment variables
              may interfere with locating /usr/libexec/.../stapio.

       errors from target program
              The program invoked by the stap -c CMD option may exit with a
              non-zero code.

       uncaught exceptions in the target program
              When using --runtime=dyninst you may encounter an issue where
              the target program aborts with a message like "terminate
              called after throwing an instance of 'foo_exception'".  This
              is unfortunately a limitation of Dyninst, which sometimes
              prevents exceptions from properly unwinding through
              instrumented code.

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::fault(7stap),
       error::reporting(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 systemtap@sourceware.org.  This page was
       obtained from the project's upstream Git repository 
       ⟨git://sourceware.org/git/systemtap.git⟩ on 2017-05-03.  If you dis‐
       cover 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 man-pages@man7.org

                                                         ERROR::PASS5(7stap)