4 #include <sys/kernel.h>
6 #include <sys/libkern.h>
8 long __stack_chk_guard[8] = {};
9 void __stack_chk_fail(void);
12 __stack_chk_fail(void)
15 panic("stack overflow detected; backtrace may be corrupted");
19 __stack_chk_init(void *dummy __unused)
22 long guard[nitems(__stack_chk_guard)];
24 arc4rand(guard, sizeof(guard), 0);
25 for (i = 0; i < nitems(guard); i++)
26 __stack_chk_guard[i] = guard[i];
28 SYSINIT(stack_chk, SI_SUB_RANDOM, SI_ORDER_ANY, __stack_chk_init, NULL);