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

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

NAME         top

       function::sprint_ubacktrace - Return stack back trace for current
       user-space task as string.

SYNOPSIS         top

           sprint_ubacktrace:string()

ARGUMENTS         top

       None

DESCRIPTION         top

       Returns a simple backtrace for the current task. One line per
       address. Includes the symbol name (or hex address if symbol
       couldn't be resolved) and module name (if found). Includes the
       offset from the start of the function if found, otherwise the
       offset will be added to the module (if found, between brackets).
       Returns the backtrace as string (each line terminated by a newline
       character). Note that the returned stack will be truncated to
       MAXSTRINGLEN, to print fuller and richer stacks use
       print_ubacktrace. Equivalent to sprint_ustack(ubacktrace), but
       more efficient (no need to translate between hex strings and final
       backtrace string).

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 [email protected].
       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
       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]

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

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

HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH.