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

NAME
probe::signal.checkperm - Check being performed on a sent signal
SYNOPSIS
signal.checkperm
VALUES
sig_name
A string representation of the signal
task
A task handle to the signal recipient
pid_name
Name of the process receiving the signal
sig_pid
The PID of the process receiving the signal
name
Name of the probe point
sinfo
The address of the siginfo structure
si_code
Indicates the signal type
sig
The number of the signal
SystemTap Tapset Reference March 2016 PROBE::SIGNAL.CHEC(3stap)