AI Trajectory


Trajectory: (Expand/Collapse All)
Seq Timestamp Type Name Duration
0/0 2026/07/13 13:02 flow patch-triage
0m Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/mm/run_vmtests.sh) and does not make any functional changes to the kernel code itself.",
  "WorthFuzzing": false
}
1/1 2026/07/13 13:02 action read-patch-diff
0m Args: 
null

Results: 
{
  "PatchDiff": "commit 8f0de07e12bb237d2322de1a279970c1ad633040\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Jul 13 13:02:49 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh\nindex a60b9f9f16e79e..687d115e3bd807 100755\n--- a/tools/testing/selftests/mm/run_vmtests.sh\n+++ b/tools/testing/selftests/mm/run_vmtests.sh\n@@ -302,7 +302,7 @@ CATEGORY=\"compaction\" run_test ./compaction_test\n \n if command -v sudo \u0026\u003e /dev/null \u0026\u0026 sudo -u nobody ls ./on-fault-limit \u003e/dev/null;\n then\n-\tCATEGORY=\"mlock\" run_test sudo -u nobody ./on-fault-limit\n+\tCATEGORY=\"mlock\" run_test sudo -u nobody sh -c ./on-fault-limit\n else\n \techo \"# SKIP ./on-fault-limit\"\n fi\n"
}
2/1 2026/07/13 13:02 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/mm/run_vmtests.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 8f0de07e12bb237d2322de1a279970c1ad633040
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Jul 13 13:02:49 2026 +0000

    syz-cluster: applied patch under review

diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh
index a60b9f9f16e79e..687d115e3bd807 100755
--- a/tools/testing/selftests/mm/run_vmtests.sh
+++ b/tools/testing/selftests/mm/run_vmtests.sh
@@ -302,7 +302,7 @@ CATEGORY="compaction" run_test ./compaction_test
 
 if command -v sudo &> /dev/null && sudo -u nobody ls ./on-fault-limit >/dev/null;
 then
-	CATEGORY="mlock" run_test sudo -u nobody ./on-fault-limit
+	CATEGORY="mlock" run_test sudo -u nobody sh -c ./on-fault-limit
 else
 	echo "# SKIP ./on-fault-limit"
 fi

3/2 2026/07/13 13:02 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 1866
							output: 70
							thoughts: 96

Thoughts: 
**Assessing the Fuzzing Impact**

Okay, let me break this down. This patch is touching `tools/testing/selftests/mm/run_vmtests.sh`. Right off the bat, I know this is a test script, not core kernel code, so alarm bells aren't going off. The specific change is minor: it swaps `sudo -u nobody ./on-fault-limit` for `sudo -u nobody sh -c ./on-fault-limit`. Seems like a shell invocation change. Considering this isolated context, this isn't going to introduce any new functional changes to the kernel that necessitate fuzzing. It's a test infrastructure tweak at most. Therefore, in my professional opinion, `WorthFuzzing` should definitely be `false` here.

4/2 2026/07/13 13:03 tool set-results
0m Args: 
{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/mm/run_vmtests.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/mm/run_vmtests.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)