Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
function::backtrace - Hex backtrace of current kernel stack
SYNOPSIS
backtrace:string()
ARGUMENTS
None
DESCRIPTION
This function returns a string of hex addresses that are a backtrace of the kernel stack. Output may be
truncated as per maximum string length (MAXSTRINGLEN). See ubacktrace for user-space backtrace.
SEE ALSO
tapset::context-unwind(3stap)
SystemTap Tapset Reference March 2016 FUNCTION::BACKTRACE(3stap)