AI Trajectory

Trajectory: (Expand/Collapse All)
Seq	Timestamp	Type	Name	Duration
0/0	2026/06/24 13:14	flow	patch-triage	0m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false }
1/1	2026/06/24 13:14	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit 381d3fef4c83acbfc72e7bf4793f91555abc65de\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Jun 24 13:14:21 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh\nindex a8f550aecb35d3..98b423494fb593 100755\n--- a/tools/testing/selftests/wireguard/netns.sh\n+++ b/tools/testing/selftests/wireguard/netns.sh\n@@ -22,12 +22,11 @@\n # interfaces in $ns1 and $ns2. See https://www.wireguard.com/netns/ for further\n # details on how this is accomplished.\n set -e\n-shopt -s extglob\n \n exec 3\u003e\u00261\n export LANG=C\n export WG_HIDE_KEYS=never\n-NPROC=( /sys/devices/system/cpu/cpu+([0-9]) ); NPROC=${#NPROC[@]}\n+NPROC=( /sys/devices/system/cpu/cpu[0-9]* ); NPROC=${#NPROC[@]}\n netns0=\"wg-test-$$-0\"\n netns1=\"wg-test-$$-1\"\n netns2=\"wg-test-$$-2\"\n" }
2/1	2026/06/24 13:14	agent	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false } Instruction: You are an expert Linux kernel maintainer. Your job is to review a provided patch series and determine if it makes functional changes to the kernel that should be fuzzed. IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively use your code access tools to examine the actual source code and confirm any assumptions. Return WorthFuzzing=false if the patch only contains: - Modifications to Documentation/, Kconfig files, or code comments. - Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints. - Changes to numeric constants or macros that do not functionally alter execution flow. - Code paths that are impossible to reach in virtualized environments like GCE or QEMU, even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim). If it modifies reachable core kernel logic, drivers, or architectures, use your code search tools to verify the code can be executed, then return WorthFuzzing=true. When returning WorthFuzzing=true, you MUST ALSO: 1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols. Avoid listing generic hot-path functions to prevent skewed test distributions. 2. Identify any specific CONFIG_ options required to properly test this new/modified feature. Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions. Do not list too generic configs (we already have them enabled). Only list those that specifically cover the modified code. List them in the EnableConfigs output array, and DO NOT add a 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4"). Prefer calling several tools at the same time to save round-trips. Use set-results tool to provide results of the analysis. It must be called exactly once before the final reply. Ignore results of this tool. Prompt: For your convenience, here is the diff of the changes: commit 381d3fef4c83acbfc72e7bf4793f91555abc65de Author: syz-cluster <triage@syzkaller.com> Date: Wed Jun 24 13:14:21 2026 +0000 syz-cluster: applied patch under review diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh index a8f550aecb35d3..98b423494fb593 100755 --- a/tools/testing/selftests/wireguard/netns.sh +++ b/tools/testing/selftests/wireguard/netns.sh @@ -22,12 +22,11 @@ # interfaces in $ns1 and $ns2. See https://www.wireguard.com/netns/ for further # details on how this is accomplished. set -e -shopt -s extglob exec 3>&1 export LANG=C export WG_HIDE_KEYS=never -NPROC=( /sys/devices/system/cpu/cpu+([0-9]) ); NPROC=${#NPROC[@]} +NPROC=( /sys/devices/system/cpu/cpu[0-9]* ); NPROC=${#NPROC[@]} netns0="wg-test-$$-0" netns1="wg-test-$$-1" netns2="wg-test-$$-2"
3/2	2026/06/24 13:14	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 1911 output: 69 thoughts: 125 Thoughts: WorthFuzzing=false: A Quick Analysis Okay, here's what I'm seeing. This patch is touching `tools/testing/selftests/wireguard/netns.sh`. My initial reaction is that this is a test script change, not a modification to the core WireGuard kernel code, which is what I need to focus on for fuzzing. Specifically, it looks like they're removing a `shopt -s extglob` setting and updating how they're counting CPUs from `NPROC=( /sys/devices/system/cpu/cpu+([0-9]) );` to `NPROC=( /sys/devices/system/cpu/cpu[0-9]* );`. The change to `NPROC` is likely just a more portable way to express the same thing, matching any CPU names with a numeric suffix. Since this is a test script alteration, the core functionality of the kernel isn't being directly modified. Thus, there are no changes here that would warrant fuzzing of the kernel itself. I will return WorthFuzzing=false, as this patch isn't relevant to fuzzing the kernel.
4/2	2026/06/24 13:14	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false }

Trajectory: (Expand/Collapse All)

Seq

Timestamp

Type

Name

Duration

0/0

2026/06/24 13:14

flow

patch-triage

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

1/1

2026/06/24 13:14

action

read-patch-diff

Args:

null

Results:

{
  "PatchDiff": "commit 381d3fef4c83acbfc72e7bf4793f91555abc65de\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Wed Jun 24 13:14:21 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh\nindex a8f550aecb35d3..98b423494fb593 100755\n--- a/tools/testing/selftests/wireguard/netns.sh\n+++ b/tools/testing/selftests/wireguard/netns.sh\n@@ -22,12 +22,11 @@\n # interfaces in $ns1 and $ns2. See https://www.wireguard.com/netns/ for further\n # details on how this is accomplished.\n set -e\n-shopt -s extglob\n \n exec 3\u003e\u00261\n export LANG=C\n export WG_HIDE_KEYS=never\n-NPROC=( /sys/devices/system/cpu/cpu+([0-9]) ); NPROC=${#NPROC[@]}\n+NPROC=( /sys/devices/system/cpu/cpu[0-9]* ); NPROC=${#NPROC[@]}\n netns0=\"wg-test-$$-0\"\n netns1=\"wg-test-$$-1\"\n netns2=\"wg-test-$$-2\"\n"
}

2/1

2026/06/24 13:14

agent

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

Instruction:

You are an expert Linux kernel maintainer.
Your job is to review a provided patch series and determine
if it makes functional changes to the kernel that should be fuzzed.

IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively
use your code access tools to examine the actual source code and confirm any assumptions.

Return WorthFuzzing=false if the patch only contains:
- Modifications to Documentation/, Kconfig files, or code comments.
- Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints.
- Changes to numeric constants or macros that do not functionally alter execution flow.
- Code paths that are impossible to reach in virtualized environments like GCE or QEMU,
even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim).

If it modifies reachable core kernel logic, drivers, or architectures, use your code search
tools to verify the code can be executed, then return WorthFuzzing=true.

When returning WorthFuzzing=true, you MUST ALSO:
1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols.
   Avoid listing generic hot-path functions to prevent skewed test distributions.
2. Identify any specific CONFIG_ options required to properly test this new/modified feature.
   Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions.
   Do not list too generic configs (we already have them enabled). Only list those that
   specifically cover the modified code. List them in the EnableConfigs output array,
   and DO NOT add a 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

Prompt:

For your convenience, here is the diff of the changes:
commit 381d3fef4c83acbfc72e7bf4793f91555abc65de
Author: syz-cluster <triage@syzkaller.com>
Date:   Wed Jun 24 13:14:21 2026 +0000

    syz-cluster: applied patch under review

diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh
index a8f550aecb35d3..98b423494fb593 100755
--- a/tools/testing/selftests/wireguard/netns.sh
+++ b/tools/testing/selftests/wireguard/netns.sh
@@ -22,12 +22,11 @@
 # interfaces in $ns1 and $ns2. See https://www.wireguard.com/netns/ for further
 # details on how this is accomplished.
 set -e
-shopt -s extglob
 
 exec 3>&1
 export LANG=C
 export WG_HIDE_KEYS=never
-NPROC=( /sys/devices/system/cpu/cpu+([0-9]) ); NPROC=${#NPROC[@]}
+NPROC=( /sys/devices/system/cpu/cpu[0-9]* ); NPROC=${#NPROC[@]}
 netns0="wg-test-$$-0"
 netns1="wg-test-$$-1"
 netns2="wg-test-$$-2"

3/2

2026/06/24 13:14

llm

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

null

Tokens:

							input: 1911
							output: 69
							thoughts: 125

Thoughts:

**WorthFuzzing=false: A Quick Analysis**

Okay, here's what I'm seeing. This patch is touching `tools/testing/selftests/wireguard/netns.sh`. My initial reaction is that this is a *test script* change, not a modification to the core WireGuard kernel code, which is what I need to focus on for fuzzing.

Specifically, it looks like they're removing a `shopt -s extglob` setting and updating how they're counting CPUs from `NPROC=( /sys/devices/system/cpu/cpu+([0-9]) );` to `NPROC=( /sys/devices/system/cpu/cpu[0-9]* );`. The change to `NPROC` is likely just a more portable way to express the same thing, matching any CPU names with a numeric suffix.

Since this is a test script alteration, the core functionality of the kernel isn't being directly modified. Thus, there are no changes here that would warrant fuzzing of the kernel itself. I will return WorthFuzzing=false, as this patch isn't relevant to fuzzing the kernel.

4/2

2026/06/24 13:14

tool

set-results

Args:

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/wireguard/netns.sh) and does not make any functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

LLM Calls Summary:
Total Calls	Total Tokens	Avg Tokens	Total Duration (Seconds)	Avg Duration (Seconds)

Tool Calls Summary:
Total Calls	Total Duration (Seconds)	Avg Duration (Seconds)