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Tip revision: ac9a78681b921877518763ba0e89202254349d1b authored by Linus Torvalds on 07 May 2023, 20:34:35 UTC
Linux 6.4-rc1
Tip revision: ac9a786
stackprotector.h
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _ASM_RISCV_STACKPROTECTOR_H
#define _ASM_RISCV_STACKPROTECTOR_H

extern unsigned long __stack_chk_guard;

/*
 * Initialize the stackprotector canary value.
 *
 * NOTE: this must only be called from functions that never return,
 * and it must always be inlined.
 */
static __always_inline void boot_init_stack_canary(void)
{
	unsigned long canary = get_random_canary();

	current->stack_canary = canary;
	if (!IS_ENABLED(CONFIG_STACKPROTECTOR_PER_TASK))
		__stack_chk_guard = current->stack_canary;
}
#endif /* _ASM_RISCV_STACKPROTECTOR_H */
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