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         ".type just_return_func, @function\n"
  10         ".globl just_return_func\n"
  11         "just_return_func:\n"
  12         "       ret\n"
  13         ".size just_return_func, .-just_return_func\n"
  14 );
  15
  16 void override_function_with_return(struct pt_regs *regs)
  17 {
  18         regs->ip = (unsigned long)&just_return_func;
  19 }
  20 NOKPROBE_SYMBOL(override_function_with_return);