Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::print_backtrace - Print kernel stack back trace
SYNOPSIS
print_backtrace()
ARGUMENTS
None
DESCRIPTION
This function is equivalent to print_stack(backtrace), except that deeper stack nesting may be supported.
See print_ubacktrace for user-space backtrace. The function does not return a value.
SystemTap Tapset Reference March 2016 FUNCTION::PRINT_BACK(3stap)