AI Slop Code Risk Monitor

mit-pdos/xv6-riscv

Name: mit-pdos/xv6-riscv — C Code Quality & Security Review | AI Slop Code Risk Monitor
Creator: AI Slop Code Risk Monitor

Adjusted legacy signal; badge bands: 25 / 50 / 75 (different from dashboard bands).

Xv6 for RISC-V

3.3 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for mit-pdos/xv6-riscv, a C project with 10,723 GitHub stars. SynthScan examined 12,519 lines of code across 68 source files, recording 41 pattern matches distributed across 1 syntactic category. The legacy adjusted pattern signal is 3.3 (Low pattern signal); it is not an authorship estimate.

Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.

3.3

Adjusted Signal

3.3

Raw Pattern Score

100%

Time Factor

2026-10-26

Last Push

10.7K

Stars

Language

12.5K

Lines of Code

Files

Pattern Hits

2026-10-31

Scan Date

0.00

HC Hit Rate

Risk Review · Payload v1

Use each vector to guide manual verification of the underlying findings.

Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.

Cognitive Ownership Risk 15.1/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 41 finding(s).

Hallucinated Dependency & Supply Chain Risk 0.0/100 · LOW

Are imports declared and package/API names verified? 0 finding(s).

Agent Over-Engineering Ratio 0.0/100 · LOW

Are wrappers, guards, and repeated structures necessary? 0 finding(s).

PR Review Velocity Impact 15.1/100 · LOW

Which changes need focused human review? 41 finding(s).

What These Metrics Mean

Adjusted Signal: Legacy pattern score normalized per 1,000 scanned lines and multiplied by the repository-level time factor. It is not an estimate of AI authorship.
Raw Pattern Score: Sum of severity- and context-weighted pattern findings before applying the time factor.
Time Factor: A coarse multiplier based on repository last-push metadata. It does not identify when individual code was written.
Pattern Hits: Count of configured pattern findings. Review each location and surrounding code before acting.
HC Hit Rate: High- and critical-severity findings per scanned file. Severity is a configured detector weight, not proof of a vulnerability or authorship.
Lines / Files: Scan coverage denominators used by the legacy normalized score.

Pattern-Signal History

This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.

Severity Breakdown

Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.

CRITICAL 0HIGH 0MEDIUM 0LOW 41

Directory Score Breakdown

This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.

Pattern Findings

The scanner identified 41 distinct pattern matches across 1 syntactic category. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.

Over-Commented Block41 hits · 41 pts

Severity	File	Line	Snippet	Context
LOW	mkfs/mkfs.c	1	#include <stdio.h>	COMMENT
LOW	user/grind.c	1	//	COMMENT
LOW	user/sh.c	1	// Shell.	COMMENT
LOW	user/stressfs.c	1	// Demonstrate that moving the "acquire" in iderw after the loop that	COMMENT
LOW	user/usertests.c	1	#include "kernel/param.h"	COMMENT
LOW	kernel/log.c	1	#include "types.h"	COMMENT
LOW	kernel/log.c	21	// But if it thinks the log is close to running out, it	COMMENT
LOW	kernel/vm.c	81		COMMENT
LOW	kernel/fcntl.h	1	#define O_RDONLY 0x000	COMMENT
LOW	kernel/sysfile.c	1	//	COMMENT
LOW	kernel/printk.c	1	//	COMMENT
LOW	kernel/fs.c	1	// File system implementation. Five layers:	COMMENT
LOW	kernel/fs.c	101	m = 1 << (bi % 8);	COMMENT
LOW	kernel/fs.c	121	// to provide a place for synchronizing access	COMMENT
LOW	kernel/fs.c	141	// * Valid: the information (type, size, &c) in an inode	COMMENT
LOW	kernel/fs.c	161	// The separation also helps avoid deadlock and races during	COMMENT
LOW	kernel/fs.c	641	de.inum = inum;	COMMENT
LOW	kernel/memlayout.h	1	// Physical memory layout	COMMENT
LOW	kernel/memlayout.h	21	#define UART0 0x10000000L	COMMENT
LOW	kernel/memlayout.h	41	// for use by the kernel and user pages	COMMENT
LOW	kernel/memlayout.h	61	// TRAPFRAME (p->trapframe, used by the trampoline)	COMMENT
LOW	kernel/elf.h	41	#define ELF_PROG_FLAG_WRITE 2	COMMENT
LOW	kernel/virtio.h	1	//	COMMENT
LOW	kernel/virtio.h	21	#define VIRTIO_MMIO_QUEUE_NUM 0x038 // size of current queue, write-only	COMMENT
LOW	kernel/virtio.h	41	// device feature bits	COMMENT
LOW	kernel/console.c	1	//	COMMENT
LOW	kernel/console.c	21	#include "riscv.h"	COMMENT
LOW	kernel/param.h	1	#define NPROC 64 // maximum number of processes	COMMENT
LOW	kernel/spinlock.c	61	// fence rw,w	COMMENT
LOW	kernel/bio.c	1	// Buffer cache.	COMMENT
LOW	kernel/proc.c	421	// Per-CPU process scheduler.	COMMENT
LOW	kernel/riscv.h	401	// shift a physical address to the right place for a PTE.	COMMENT
LOW	kernel/virtio_disk.c	1	//	COMMENT
LOW	kernel/virtio_disk.c	21		COMMENT
LOW	kernel/file.c	1	//	COMMENT
LOW	kernel/vm.h	1	#define SBRK_EAGER 1	COMMENT
LOW	kernel/syscall.h	1	// System call numbers	COMMENT
LOW	kernel/syscall.h	21	#define SYS_mkdir 20	COMMENT
LOW	kernel/fs.h	41	// Inodes per block.	COMMENT
LOW	kernel/uart.c	1	//	COMMENT
LOW	kernel/uart.c	21		COMMENT