1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_SH_STACKPROTECTOR_H 3 #define __ASM_SH_STACKPROTECTOR_H 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