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

   1// SPDX-License-Identifier: GPL-2.0+
   2
   3#include <linux/error-injection.h>
   4#include <linux/kprobes.h>
   5#include <linux/uaccess.h>
   6
   7void override_function_with_return(struct pt_regs *regs)
   8{
   9        /*
  10         * Emulate 'blr'. 'regs' represents the state on entry of a predefined
  11         * function in the kernel/module, captured on a kprobe. We don't need
  12         * to worry about 32-bit userspace on a 64-bit kernel.
  13         */
  14        regs_set_return_ip(regs, regs->link);
  15}
  16NOKPROBE_SYMBOL(override_function_with_return);
  17