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

NAME
function::user_string2_utf32 - Retrieves UTF-32 string from user memory with alternative error string
SYNOPSIS
user_string2_utf32:string(addr:long,err_msg:string)
ARGUMENTS
addr
The user address to retrieve the string from
err_msg
The error message to return when data isn't available
DESCRIPTION
This function returns a null terminated UTF-8 string converted from the UTF-32 string at a given user
memory address. Reports the given error message on string copy fault or conversion error.
SystemTap Tapset Reference March 2016 FUNCTION::USER_STRIN(3stap)