arch/x86/lib/error-inject.c

   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);