1 #ifndef __ASM_SH_STACKPROTECTOR_H
2 #define __ASM_SH_STACKPROTECTOR_H
4 #include <linux/random.h>
5 #include <linux/version.h>
7 extern unsigned long __stack_chk_guard;
10 * Initialize the stackprotector canary value.
12 * NOTE: this must only be called from functions that never return,
13 * and it must always be inlined.
15 static __always_inline void boot_init_stack_canary(void)
19 /* Try to get a semi random initial value. */
20 get_random_bytes(&canary, sizeof(canary));
21 canary ^= LINUX_VERSION_CODE;
23 current->stack_canary = canary;
24 __stack_chk_guard = current->stack_canary;
27 #endif /* __ASM_SH_STACKPROTECTOR_H */