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

NAME
probe::signal.checkperm.return - Check performed on a sent signal completed
SYNOPSIS
signal.checkperm.return
VALUES
retstr
Return value as a string
name
Name of the probe point
SystemTap Tapset Reference March 2016 PROBE::SIGNAL.CHEC(3stap)