centos man page for error::fault

ERROR::FAULT(7stap)													       ERROR::FAULT(7stap)

NAME
       error::fault - memory access faults

DESCRIPTION
       Read  or  write faults can occur during the operation of a systemtap script, if the script causes dereferencing of a pointer that turns out
       to be invalid.  This can be caused by using context variables that do not happen to have valid values, or perhaps references to memory that
       is unavailable at that moment due to paging.

       These fault conditions are benign because they are caught by the systemtap runtime, which cleanly terminates the script.  If quick termina-
       tion is not desired, consider using the --suppress-handler-errors or -DMAXERRORS=NN stap options, or wrapping relevant parts of	the  probe
       handlers in a try/catch block.

SEE ALSO
       stap(1),
       error::reporting(7stap)

															       ERROR::FAULT(7stap)