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v0.8.1
https://github.com/torvalds/linux
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Tip revision: fc74e0a40e4f9fd0468e34045b0c45bba11dcbb2 authored by Linus Torvalds on 26 December 2021, 21:17:17 UTC
Linux 5.16-rc7
Tip revision: fc74e0a
error-inject.c
// SPDX-License-Identifier: GPL-2.0+

#include <linux/error-injection.h>
#include <linux/kprobes.h>
#include <linux/uaccess.h>

void override_function_with_return(struct pt_regs *regs)
{
	/*
	 * Emulate 'blr'. 'regs' represents the state on entry of a predefined
	 * function in the kernel/module, captured on a kprobe. We don't need
	 * to worry about 32-bit userspace on a 64-bit kernel.
	 */
	regs_set_return_ip(regs, regs->link);
}
NOKPROBE_SYMBOL(override_function_with_return);
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