AI Trajectory


Trajectory: (Expand/Collapse All)
Seq Timestamp Type Name Duration
0/0 2026/08/13 10:53 flow patch-triage
0m Args:
null

Results:
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch only fixes a typo in a comment in fs/fs-writeback.c. It does not make any functional changes to the kernel.",
  "WorthFuzzing": false
}

1/1 2026/08/13 10:53 action read-patch-diff
0m Args:
null

Results:
{
  "PatchDiff": "commit d6e5ad0632da39831eb2bf32e557df58320cadb4\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Thu Aug 13 10:53:45 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/fs/fs-writeback.c b/fs/fs-writeback.c\nindex fdb8766d275a1..e19a588c07444 100644\n--- a/fs/fs-writeback.c\n+++ b/fs/fs-writeback.c\n@@ -233,7 +233,7 @@ void wb_wait_for_completion(struct wb_completion *done)\n  * Parameters for foreign inode detection, see wbc_detach_inode() to see\n  * how they're used.\n  *\n- * These paramters are inherently heuristical as the detection target\n+ * These parameters are inherently heuristical as the detection target\n  * itself is fuzzy.  All we want to do is detaching an inode from the\n  * current owner if it's being written to by some other cgroups too much.\n  *\n"
}

2/1 2026/08/13 10:53 agent patch-evaluator
0m Model:
best-expensive

Args:
null

Results:
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only fixes a typo in a comment in fs/fs-writeback.c. It does not make any functional changes to the kernel.",
  "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).
- Code in vendor-specific PCIe switch, SmartNIC, or GPU drivers (e.g., mlxsw, pds_core, qed,
  ionic, amdgpu) that require physical PCIe hardware cards not emulated in standard QEMU.
- Driver .remove, .shutdown, or pci_unregister_driver teardown callbacks (e.g., igb_remove)
  that are executed only during PCI hot-unplug or sysfs driver unbind operations.

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.
   Prefer non-static, non-inlined API entrypoint functions over internal static helper functions
   (which are inlined by the compiler and do not have distinct symbol addresses).
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.
   Also check "depends on" lines in Kconfig to include any non-standard parent subsystem configs
   needed for Kbuild to compile the code statically into vmlinux. 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 d6e5ad0632da39831eb2bf32e557df58320cadb4
Author: syz-cluster <triage@syzkaller.com>
Date:   Thu Aug 13 10:53:45 2026 +0000

    syz-cluster: applied patch under review

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index fdb8766d275a1..e19a588c07444 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -233,7 +233,7 @@ void wb_wait_for_completion(struct wb_completion *done)
  * Parameters for foreign inode detection, see wbc_detach_inode() to see
  * how they're used.
  *
- * These paramters are inherently heuristical as the detection target
+ * These parameters are inherently heuristical as the detection target
  * itself is fuzzy.  All we want to do is detaching an inode from the
  * current owner if it's being written to by some other cgroups too much.
  *

3/2 2026/08/13 10:53 llm patch-evaluator
0m Model:
gemini-3.1-pro-preview

Args:
null

Results:
null

Tokens:
							input: 1991
							output: 61
							thoughts: 46
						

Thoughts:
Okay, here's my take on those thoughts, framed as my own:

**Minor Cosmetic Fix in fs-writeback.c**

Alright, so I just reviewed a patch addressing a typo in `fs/fs-writeback.c`. The change is incredibly straightforward – a simple correction from "paramters" to "parameters" within a comment. Honestly, this is a purely decorative alteration. It's not impacting functionality at all; this is a comment fix only. No code is being changed. Given the nature of this change, there's no need to consider it for fuzzing. WorthFuzzing=false. Next!



4/2 2026/08/13 10:53 tool set-results
0m Args:
{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only fixes a typo in a comment in fs/fs-writeback.c. It does not make any functional changes to the kernel.",
  "WorthFuzzing": false
}

Results:
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only fixes a typo in a comment in fs/fs-writeback.c. It does not make any functional changes to the kernel.",
  "WorthFuzzing": false
}

5/1 2026/08/13 10:53 action If
0m Args:
{
  "WorthFuzzing": false
}

Results:
null

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)