LXR linux/arch/arm64/lib/error-inject.c

   1// SPDX-License-Identifier: GPL-2.0
   2
   3#include <linux/error-injection.h>
   4#include <linux/kprobes.h>
   5
   6void override_function_with_return(struct pt_regs *regs)
   7{
   8        /*
   9         * 'regs' represents the state on entry of a predefined function in
  10         * the kernel/module and which is captured on a kprobe.
  11         *
  12         * When kprobe returns back from exception it will override the end
  13         * of probed function and directly return to the predefined
  14         * function's caller.
  15         */
  16        instruction_pointer_set(regs, procedure_link_pointer(regs));
  17}
  18NOKPROBE_SYMBOL(override_function_with_return);
  19