1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __ASM_SH_STACKPROTECTOR_H 3#define __ASM_SH_STACKPROTECTOR_H 4 5extern 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 */ 13static __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