1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_STACKPROTECTOR_H
3 #define _ASM_STACKPROTECTOR_H 1
4
5 extern unsigned long __stack_chk_guard;
6
7 /*
8 * Initialize the stackprotector canary value.
9 *
10 * NOTE: this must only be called from functions that never return,
11 * and it must always be inlined.
12 */
13 static __always_inline void boot_init_stack_canary(void)
14 {
15 unsigned long canary = get_random_canary();
16
17 current->stack_canary = canary;
18 __stack_chk_guard = current->stack_canary;
19 }
20
21 #endif /* __ASM_SH_STACKPROTECTOR_H */
22
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