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NAME | DESCRIPTION | GATHERING MORE INFORMATION | SEE ALSO | COLOPHON |
ERROR::PASS5(7stap) ERROR::PASS5(7stap)
error::pass5 - systemtap pass-5 errors
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.
Increasing the verbosity of pass-5 with an option such as --vp 00001
can help pinpoint the problem.
stap(1),
http://sourceware.org/systemtap/wiki/TipExhaustedResourceErrors ,
error::fault(7stap),
error::reporting(7stap)
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 2017-07-05. 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)