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/*
* Oracle Linux DTrace.
* Copyright (c) 2007, 2025, Oracle and/or its affiliates. All rights reserved.
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
/*
* Create a ridiculously large stack - enough to push us over
* the default setting of 'kernel.perf_event_max_stack' (127).
*/
int limit = 4096;
int grow1(int);
int
shouldGrow(int frame)
{
return frame >= limit-- ? 0 : 1;
}
int
grow(int frame)
{
if (shouldGrow(frame))
frame = grow1(frame++);
for (;;)
ioctl(-1, -1, NULL);
grow1(frame);
}
int
grow1(int frame)
{
if (shouldGrow(frame))
frame = grow(frame++);
for (;;)
ioctl(-2, -2, NULL);
grow(frame);
}
int
main(int argc, char *argv[])
{
grow(1);
return 0;
}
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