AI Trajectory


Trajectory: (Expand/Collapse All)
Seq Timestamp Type Name Duration
0/0 2026/08/04 04:15 flow patch-triage
0m Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies documentation (Documentation/admin-guide/blockdev/zoned_loop.rst) and does not contain any functional code changes.",
  "WorthFuzzing": false
}
1/1 2026/08/04 04:15 action read-patch-diff
0m Args: 
null

Results: 
{
  "PatchDiff": "commit fa451f1fb69116f5ec7cb754c86580e8e4920109\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Tue Aug 4 04:15:20 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/Documentation/admin-guide/blockdev/zoned_loop.rst b/Documentation/admin-guide/blockdev/zoned_loop.rst\nindex f4f1f3121bf95..fd99e5cc63e4c 100644\n--- a/Documentation/admin-guide/blockdev/zoned_loop.rst\n+++ b/Documentation/admin-guide/blockdev/zoned_loop.rst\n@@ -71,8 +71,9 @@ follows.\n ===================   =========================================================\n id                    Device number (the X in /dev/zloopX).\n                       Default: automatically assigned.\n-capacity_mb           Device total capacity in MiB. This is always rounded up\n-                      to the nearest higher multiple of the zone size.\n+capacity_mb           Device total capacity in MiB. A smaller last zone is not\n+                      supported, so an unaligned value is rounded down to a\n+                      zone-size multiple.\n                       Default: 16384 MiB (16 GiB).\n zone_size_mb          Device zone size in MiB. Default: 256 MiB.\n zone_capacity_mb      Device zone capacity (must always be equal to or lower\n"
}
2/1 2026/08/04 04:15 agent patch-evaluator
0m Model: 
best-expensive

Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies documentation (Documentation/admin-guide/blockdev/zoned_loop.rst) and does not contain any functional code changes.",
  "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 fa451f1fb69116f5ec7cb754c86580e8e4920109
Author: syz-cluster <triage@syzkaller.com>
Date:   Tue Aug 4 04:15:20 2026 +0000

    syz-cluster: applied patch under review

diff --git a/Documentation/admin-guide/blockdev/zoned_loop.rst b/Documentation/admin-guide/blockdev/zoned_loop.rst
index f4f1f3121bf95..fd99e5cc63e4c 100644
--- a/Documentation/admin-guide/blockdev/zoned_loop.rst
+++ b/Documentation/admin-guide/blockdev/zoned_loop.rst
@@ -71,8 +71,9 @@ follows.
 ===================   =========================================================
 id                    Device number (the X in /dev/zloopX).
                       Default: automatically assigned.
-capacity_mb           Device total capacity in MiB. This is always rounded up
-                      to the nearest higher multiple of the zone size.
+capacity_mb           Device total capacity in MiB. A smaller last zone is not
+                      supported, so an unaligned value is rounded down to a
+                      zone-size multiple.
                       Default: 16384 MiB (16 GiB).
 zone_size_mb          Device zone size in MiB. Default: 256 MiB.
 zone_capacity_mb      Device zone capacity (must always be equal to or lower

3/2 2026/08/04 04:15 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 2128
							output: 61
							thoughts: 123

Thoughts: 
**Documentation-Only Change - WorthFuzzing=false**

Okay, so this patch is a straightforward one. I see it's touching only `Documentation/admin-guide/blockdev/zoned_loop.rst`. My initial read suggests this is a documentation update for the `capacity_mb` parameter within the `zloop` zoned loop device. No code is being touched, just the documentation explaining it.

Since there's no actual code modification, there's no real benefit to fuzzing this. Let me quickly verify that my initial assessment is correct and confirm the diff only includes that one file. Yes, confirmed. Just that `rst` file.

Therefore, I'm returning `WorthFuzzing=false` and noting that the rationale is based on the patch's sole focus on documentation changes.

4/2 2026/08/04 04:15 tool set-results
0m Args: 
{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies documentation (Documentation/admin-guide/blockdev/zoned_loop.rst) and does not contain any functional code changes.",
  "WorthFuzzing": false
}

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies documentation (Documentation/admin-guide/blockdev/zoned_loop.rst) and does not contain any functional code changes.",
  "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)