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v0.5.1
https://github.com/torvalds/linux
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Tip revision: 521a547ced6477c54b4b0cc206000406c221b4d6 authored by Linus Torvalds on 18 September 2022, 20:44:14 UTC
Linux 6.0-rc6
Tip revision: 521a547
error-inject.c
// SPDX-License-Identifier: GPL-2.0

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

void override_function_with_return(struct pt_regs *regs)
{
	/*
	 * 'regs' represents the state on entry of a predefined function in
	 * the kernel/module and which is captured on a kprobe.
	 *
	 * When kprobe returns back from exception it will override the end
	 * of probed function and directly return to the predefined
	 * function's caller.
	 */
	instruction_pointer_set(regs, procedure_link_pointer(regs));
}
NOKPROBE_SYMBOL(override_function_with_return);
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