1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef _ASM_RISCV_STACKPROTECTOR_H 4 #define _ASM_RISCV_STACKPROTECTOR_H 5 6 extern unsigned long __stack_chk_guard; 7 8 /* 9 * Initialize the stackprotector canary value. 10 * 11 * NOTE: this must only be called from functions that never return, 12 * and it must always be inlined. 13 */ 14 static __always_inline void boot_init_stack_canary(void) 15 { 16 unsigned long canary = get_random_canary(); 17 18 current->stack_canary = canary; 19 if (!IS_ENABLED(CONFIG_STACKPROTECTOR_PER_TASK)) 20 __stack_chk_guard = current->stack_canary; 21 } 22 #endif /* _ASM_RISCV_STACKPROTECTOR_H */ 23