Provided by: systemtap-doc_1.6-1ubuntu1_all bug

NAME

       function::user_string_warn - Retrieves string from user space

SYNOPSIS

           user_string_warn:string(addr:long)

ARGUMENTS

       addr
           the user space address to retrieve the string from

DESCRIPTION

       Returns the null terminated C string from a given user space memory address. Reports
       “<unknown>” on the rare cases when userspace data is not accessible and warns (but does
       not abort) about the failure.