function::ubacktrace(3stap) — Linux manual page

FUNCTION::UBACKTRACE(3stap) Context Functions FUNCTION::UBACKTRACE(3stap)

NAME         top

       function::ubacktrace - Hex backtrace of current user-space task
       stack.

SYNOPSIS         top

           ubacktrace:string()

ARGUMENTS         top

       None

DESCRIPTION         top

       Return a string of hex addresses that are a backtrace of the stack
       of the current task. Output may be truncated as per maximum string
       length. Returns empty string when current probe point cannot
       determine user backtrace. See backtrace for kernel traceback.

NOTE         top

       To get (full) backtraces for user space applications and shared
       shared libraries not mentioned in the current script run stap with
       -d /path/to/exe-or-so and/or add --ldd to load all needed unwind
       data.

SEE ALSO         top

       tapset::ucontext-unwind(3stap)

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 2025-08-11.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2025-07-24.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there is
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       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

SystemTap Tapset Reference      April 2025    FUNCTION::UBACKTRACE(3stap)

Pages that refer to this page: tapset::ucontext-unwind(3stap)

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