File: cve-2013-2094.stp

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systemtap 5.1-5
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%{
#include <linux/perf_event.h>
%}

function sanitize_config:long (event:long) %{
  struct perf_event *event;

#if STAP_COMPAT_VERSION >= STAP_VERSION(1,8)
   event = (struct perf_event *) (unsigned long) STAP_ARG_event;
#else
    event = (struct perf_event *) (unsigned long) THIS->event;
#endif

    event->attr.config &= INT_MAX;
%}

probe kernel.function("perf_swevent_init").call {
  sanitize_config($event);
}