Documentation/fault-injection/fault-injection.rst

File Facts

System

Linux kernel

Corpus path

Documentation/fault-injection/fault-injection.rst

Extension

.rst

Size

19325 bytes

Lines

612

Domain

Support Tooling And Documentation

Bucket

Documentation

Inferred role

Support Tooling And Documentation: documentation

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• sys/types.h
• sys/stat.h
• sys/socket.h
• sys/syscall.h
• fcntl.h
• unistd.h
• string.h
• stdlib.h
• stdio.h
• errno.h

Detected Declarations

• function faulty_system

Annotated Snippet

if (res == 0) {
			close(fds[0]);
			close(fds[1]);
		}
		printf("%d-th fault %c: res=%d/%d\n", i, atoi(buf) ? 'N' : 'Y',
			res, err);
		if (atoi(buf))
			break;
	}
	return 0;
  }

An example output::

	1-th fault Y: res=-1/23
	2-th fault Y: res=-1/23
	3-th fault Y: res=-1/12
	4-th fault Y: res=-1/12
	5-th fault Y: res=-1/23
	6-th fault Y: res=-1/23
	7-th fault Y: res=-1/23
	8-th fault Y: res=-1/12
	9-th fault Y: res=-1/12
	10-th fault Y: res=-1/12
	11-th fault Y: res=-1/12
	12-th fault Y: res=-1/12
	13-th fault Y: res=-1/12
	14-th fault Y: res=-1/12
	15-th fault Y: res=-1/12
	16-th fault N: res=0/12

Annotation

• Immediate include surface: `sys/types.h`, `sys/stat.h`, `sys/socket.h`, `sys/syscall.h`, `fcntl.h`, `unistd.h`, `string.h`, `stdlib.h`.
• Detected declarations: `function faulty_system`.
• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.

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.