arch/arm64/lib/error-inject.c

File Facts

System

Linux kernel

Corpus path

arch/arm64/lib/error-inject.c

Extension

.c

Size

563 bytes

Lines

19

Domain

Architecture Layer

Bucket

arch/arm64

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/error-injection.h
• linux/kprobes.h

Detected Declarations

• function override_function_with_return

Annotated Snippet

// 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);

Annotation

• Immediate include surface: `linux/error-injection.h`, `linux/kprobes.h`.
• Detected declarations: `function override_function_with_return`.
• Atlas domain: Architecture Layer / arch/arm64.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.