Packet, where are you? -- eBPF-based Linux kernel networking debugger
This report summarizes scanner evidence for cilium/pwru, a C project with 3,846 GitHub stars. SynthScan examined 108,752 lines of code across 246 source files, recording 319 pattern matches distributed across 3 syntactic categories. The legacy adjusted pattern signal is 3.4 (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.
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.
Can maintainers explain intent, assumptions, and trade-offs? 313 finding(s).
Are imports declared and package/API names verified? 6 finding(s).
Are wrappers, guards, and repeated structures necessary? 0 finding(s).
Which changes need focused human review? 319 finding(s).
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.
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.
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.
The scanner identified 319 distinct pattern matches across 3 syntactic categories. 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.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | bpf/kprobe_pwru.c | 1 | // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) | COMMENT |
| LOW | bpf/headers/vmlinux.h | 1 | #if defined(__TARGET_ARCH_x86) | COMMENT |
| LOW | bpf/headers/bpf/bpf_endian.h | 41 | * | COMMENT |
| LOW | bpf/headers/bpf/bpf_endian.h | 61 | # define __bpf_constant_be64_to_cpu(x) ___bpf_swab64(x) | COMMENT |
| LOW | bpf/headers/bpf/bpf_ipv6.h | 1 | #include "vmlinux.h" | COMMENT |
| LOW | bpf/headers/bpf/bpf_core_read.h | 361 | #define ___last6(a, b, c, d, e, x) x | COMMENT |
| LOW | bpf/headers/bpf/bpf_core_read.h | 381 | #define ___arrow3(a, b, c) a->b->c | COMMENT |
| LOW | bpf/headers/bpf/bpf_core_read.h | 401 | #define ___rd_p2(fn, ...) ___rd_p1(fn, ___nolast(__VA_ARGS__)) ___rd_last(fn, __VA_ARGS__) | COMMENT |
| LOW | bpf/headers/bpf/bpf_helpers.h | 181 | }; | COMMENT |
| LOW | bpf/headers/bpf/bpf_helpers.h | 201 | }) | COMMENT |
| LOW | bpf/headers/bpf/bpf_helpers.h | 221 | #ifndef ___bpf_narg | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 1 | /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 21 | #define bpf_target_mips | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 41 | #if defined(__x86_64__) | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 61 | #define bpf_target_defined | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 81 | /* | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 101 | #define __PT_PARM5_SYSCALL_REG __PT_PARM5_REG | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 121 | #define __PT_PARM3_SYSCALL_REG edx | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 141 | #define __PT_PARM1_SYSCALL_REG __PT_PARM1_REG | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 161 | * https://github.com/IBM/s390x-abi/releases/download/v1.6/lzsabi_s390x.pdf | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 181 | #define __PT_PARM6_SYSCALL_REG gprs[7] | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 201 | #define __PT_PARM4_REG uregs[3] | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 221 | */ | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 241 | #define __PT_PARM4_SYSCALL_REG __PT_PARM4_REG | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 261 | #define __PT_PARM1_REG regs[4] | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 281 | #define __PT_IP_REG cp0_epc | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 301 | #define __PT_PARM1_SYSCALL_REG orig_gpr3 | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 321 | */ | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 361 | #define __PT_PARM2_REG a1 | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 381 | #define __PT_RC_REG a0 | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 401 | #define __PT_PARM8_REG scratch.r7 | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 421 | * https://docs.kernel.org/loongarch/introduction.html | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 441 | #define __PT_PARM4_SYSCALL_REG __PT_PARM4_REG | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 461 | COMMENT | |
| LOW | bpf/headers/bpf/bpf_tracing.h | 481 | /* | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 501 | #define PT_REGS_FP(x) (__PT_REGS_CAST(x)->__PT_FP_REG) | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 521 | COMMENT | |
| LOW | bpf/headers/bpf/bpf_tracing.h | 541 | #define PT_REGS_PARM1_CORE_SYSCALL(x) BPF_CORE_READ(__PT_REGS_CAST(x), __PT_PARM1_SYSCALL_REG) | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 561 | #define PT_REGS_PARM6_CORE_SYSCALL(x) BPF_CORE_READ(__PT_REGS_CAST(x), __PT_PARM6_SYSCALL_REG) | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 581 | #define PT_REGS_SP(x) ({ _Pragma(__BPF_TARGET_MISSING); 0l; }) | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 601 | #define PT_REGS_PARM1_SYSCALL(x) ({ _Pragma(__BPF_TARGET_MISSING); 0l; }) | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 621 | * struct pt_regs containing syscall arguments and suitable for passing to | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 641 | COMMENT | |
| LOW | bpf/headers/bpf/bpf_tracing.h | 701 | __builtin_choose_expr(sizeof(t) == 16, 2, \ | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 721 | __builtin_choose_expr(sizeof(t) == 2, ({ union { __u16 z[1]; t x; } ___t = { .z = {ctx[n]} }; ___t.x; }), \ | COMMENT |
| LOW | bpf/headers/bpf/bpf_tracing.h | 741 | COMMENT | |
| LOW | bpf/headers/bpf/bpf_tracing.h | 861 | #define ___bpf_syscall_args7(x, args...) ___bpf_syscall_args6(args), (unsigned long long)PT_REGS_PARM7_SYSCALL(regs) | COMMENT |
| LOW | libpcap/build_matrix.sh | 1 | #!/bin/sh -e | COMMENT |
| LOW | libpcap/savefile.c | 41 | #include <stdio.h> | COMMENT |
| LOW | libpcap/sf-pcapng.c | 21 | * sf-pcapng.c - pcapng-file-format-specific code from savefile.c | COMMENT |
| LOW | libpcap/sf-pcapng.c | 121 | /* | COMMENT |
| LOW | libpcap/pcap-dos.c | 1 | /* | COMMENT |
| LOW | libpcap/pcap-dos.c | 21 | #include "msdos/pm_drvr/bios32.h" | COMMENT |
| LOW | libpcap/pcap-dos.c | 41 | #include "msdos/pktdrvr.h" | COMMENT |
| LOW | libpcap/nlpid.h | 21 | /* | COMMENT |
| LOW | libpcap/nlpid.h | 41 | #define ISIS_L1_LAN_IIH 15 | COMMENT |
| LOW | libpcap/pcap-sita.c | 21 | * | COMMENT |
| LOW | libpcap/sf-pcap.c | 41 | #include <stdio.h> | COMMENT |
| LOW | libpcap/thread-local.h | 61 | #define thread_local __declspec(thread) | COMMENT |
| LOW | libpcap/CMakeLists.txt | 1 | if(WIN32) | COMMENT |
| 247 more matches not shown… | ||||
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH⚡ | libpcap/pcap-common.c | 618 | * FlexRay automotive bus - http://www.flexray.com/ - as requested | COMMENT |
| HIGH⚡ | libpcap/pcap-common.c | 625 | * transport - https://www.mostcooperation.com/ - as requested | COMMENT |
| HIGH⚡ | libpcap/pcap-common.c | 632 | * http://www.lin-subbus.org/ - as requested by Hannes Kaelber | COMMENT |
| HIGH⚡ | libpcap/pcap/dlt.h | 957 | * FlexRay automotive bus - http://www.flexray.com/ - as requested | COMMENT |
| HIGH⚡ | libpcap/pcap/dlt.h | 964 | * transport - https://www.mostcooperation.com/ - as requested | COMMENT |
| HIGH⚡ | libpcap/pcap/dlt.h | 971 | * http://www.lin-subbus.org/ - as requested by Hannes Kaelber | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| HIGH | libpcap/testprogs/visopts.py | 65 | var leftsvg = null; | CODE |
| HIGH | libpcap/testprogs/visopts.py | 66 | var rightsvg = null; | CODE |
| HIGH | libpcap/testprogs/visopts.py | 121 | if (doc == null) { | CODE |
| HIGH | libpcap/testprogs/visopts.py | 134 | if (doc == null) { | CODE |
| HIGH | libpcap/testprogs/visopts.py | 150 | leftsvg = null; | CODE |
| HIGH | libpcap/testprogs/visopts.py | 159 | rightsvg = null; | CODE |