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

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

SYNOPSIS
           ubacktrace:string()

ARGUMENTS
       None

DESCRIPTION
       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
       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
       tapset::ucontext-unwind(3stap)



SystemTap Tapset Reference         June 2018       FUNCTION::UBACKTRACE(3stap)