1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/error-injection.h> 4 #include <linux/kprobes.h> 5 6 asmlinkage void just_return_func(void); 7 8 asm( 9 ".text\n" 10 ".type just_return_func, @function\n" 11 ".globl just_return_func\n" 12 "just_return_func:\n" 13 " ret\n" 14 ".size just_return_func, .-just_return_func\n" 15 ); 16 17 void override_function_with_return(struct pt_regs *regs) 18 { 19 regs->ip = (unsigned long)&just_return_func; 20 } 21 NOKPROBE_SYMBOL(override_function_with_return); 22