robust_test.c

#include <stdio.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <sys/futex.h>
#include <sys/wait.h>

int
main(int argc, char *argv[])
{
	u_long *p = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_ANONYMOUS, -1, 0);

	syscall(SYS___futex_set_robust_list, p, _FUTEX_ROBUST_HEAD_SIZE);

#if 1
	execl("/bin/ls", "ls", NULL);
#else
	munmap(p, 4096);
#endif
}