1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/linkage.h> 4 #include <linux/error-injection.h> 5 #include <linux/kprobes.h> 6 7 asmlinkage void just_return_func(void); 8 9 asm( 10 ".text\n" 11 ".type just_return_func, @function\n" 12 ".globl just_return_func\n" 13 "just_return_func:\n" 14 ASM_RET 15 ".size just_return_func, .-just_return_func\n" 16 ); 17 override_function_with_return(struct pt_regs * regs)18 void override_function_with_return(struct pt_regs *regs) 19 { 20 regs->ip = (unsigned long)&just_return_func; 21 } 22 NOKPROBE_SYMBOL(override_function_with_return); 23