AI Trajectory

Trajectory: (Expand/Collapse All)
Seq	Timestamp	Type	Name	Duration
0/0	2026/08/12 13:03	flow	patch-triage	0m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "KMSANReasoning": "", "NeedsKMSAN": false, "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of the kernel.", "WorthFuzzing": false }
1/1	2026/08/12 13:03	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit bf94e22def516f9170c5e9e683706b1daa68a489\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Aug 12 13:03:34 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c\nindex 29ebeb164bdca..083f7a8d9d4e4 100644\n--- a/net/openvswitch/vport.c\n+++ b/net/openvswitch/vport.c\n@@ -157,7 +157,6 @@ struct vport ovs_vport_alloc(int priv_size, const struct vport_ops ops,\n \tkfree(vport);\n \treturn ERR_PTR(err);\n }\n-EXPORT_SYMBOL_GPL(ovs_vport_alloc);\n \n /*\n \tovs_vport_free - uninitialize and free vport\n@@ -178,7 +177,6 @@ void ovs_vport_free(struct vport vport)\n \tfree_percpu(vport-\u003eupcall_stats);\n \tkfree(vport);\n }\n-EXPORT_SYMBOL_GPL(ovs_vport_free);\n \n static struct vport_ops ovs_vport_lookup(const struct vport_parms *parms)\n {\n" }
2/1	2026/08/12 13:03	agent	patch-evaluator	0m Model: best-expensive Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of 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 bf94e22def516f9170c5e9e683706b1daa68a489 Author: syz-cluster <triage@syzkaller.com> Date: Wed Aug 12 13:03:34 2026 +0000 syz-cluster: applied patch under review diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c index 29ebeb164bdca..083f7a8d9d4e4 100644 --- a/net/openvswitch/vport.c +++ b/net/openvswitch/vport.c @@ -157,7 +157,6 @@ struct vport ovs_vport_alloc(int priv_size, const struct vport_ops ops, kfree(vport); return ERR_PTR(err); } -EXPORT_SYMBOL_GPL(ovs_vport_alloc); /** * ovs_vport_free - uninitialize and free vport @@ -178,7 +177,6 @@ void ovs_vport_free(struct vport vport) free_percpu(vport->upcall_stats); kfree(vport); } -EXPORT_SYMBOL_GPL(ovs_vport_free); static struct vport_ops ovs_vport_lookup(const struct vport_parms *parms) {
3/2	2026/08/12 13:03	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 2074 output: 77 thoughts: 162 Thoughts: Analyzing the OVS vport.c Patch Okay, so I've just reviewed this patch and my initial impression is that it's a non-event from a fuzzing perspective. The core of it boils down to removing two `EXPORT_SYMBOL_GPL` lines from `net/openvswitch/vport.c`: specifically, `ovs_vport_alloc` and `ovs_vport_free`. This is purely a linkage change, purely cosmetic. It's essentially adjusting which symbols are made available for external use. There's no modification to the core functionality, no alterations to the execution flow of the code. To be absolutely certain, I did a quick double-check, verifying the diff only contains the removal of those two lines. No code changes, no new functions, no logic alterations, nothing. Therefore, considering the scope of this particular change, I am quite confident in classifying this as `WorthFuzzing=false`. It's a clean pass.
4/2	2026/08/12 13:04	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of the kernel.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of the kernel.", "WorthFuzzing": false }
5/1	2026/08/12 13:04	action	If	0m Args: { "WorthFuzzing": false } Results: null

Trajectory: (Expand/Collapse All)

Seq

Timestamp

Type

Name

Duration

0/0

2026/08/12 13:03

flow

patch-triage

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of the kernel.",
  "WorthFuzzing": false
}

1/1

2026/08/12 13:03

action

read-patch-diff

Args:

null

Results:

{
  "PatchDiff": "commit bf94e22def516f9170c5e9e683706b1daa68a489\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Wed Aug 12 13:03:34 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c\nindex 29ebeb164bdca..083f7a8d9d4e4 100644\n--- a/net/openvswitch/vport.c\n+++ b/net/openvswitch/vport.c\n@@ -157,7 +157,6 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops,\n \tkfree(vport);\n \treturn ERR_PTR(err);\n }\n-EXPORT_SYMBOL_GPL(ovs_vport_alloc);\n \n /**\n  *\tovs_vport_free - uninitialize and free vport\n@@ -178,7 +177,6 @@ void ovs_vport_free(struct vport *vport)\n \tfree_percpu(vport-\u003eupcall_stats);\n \tkfree(vport);\n }\n-EXPORT_SYMBOL_GPL(ovs_vport_free);\n \n static struct vport_ops *ovs_vport_lookup(const struct vport_parms *parms)\n {\n"
}

2/1

2026/08/12 13:03

agent

patch-evaluator

Model:

best-expensive

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of 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 bf94e22def516f9170c5e9e683706b1daa68a489
Author: syz-cluster <triage@syzkaller.com>
Date:   Wed Aug 12 13:03:34 2026 +0000

    syz-cluster: applied patch under review

diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 29ebeb164bdca..083f7a8d9d4e4 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -157,7 +157,6 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops,
 	kfree(vport);
 	return ERR_PTR(err);
 }
-EXPORT_SYMBOL_GPL(ovs_vport_alloc);
 
 /**
  *	ovs_vport_free - uninitialize and free vport
@@ -178,7 +177,6 @@ void ovs_vport_free(struct vport *vport)
 	free_percpu(vport->upcall_stats);
 	kfree(vport);
 }
-EXPORT_SYMBOL_GPL(ovs_vport_free);
 
 static struct vport_ops *ovs_vport_lookup(const struct vport_parms *parms)
 {

3/2

2026/08/12 13:03

llm

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

null

Tokens:

							input: 2074
							output: 77
							thoughts: 162

Thoughts:

**Analyzing the OVS vport.c Patch**

Okay, so I've just reviewed this patch and my initial impression is that it's a non-event from a fuzzing perspective. The core of it boils down to removing two `EXPORT_SYMBOL_GPL` lines from `net/openvswitch/vport.c`: specifically, `ovs_vport_alloc` and `ovs_vport_free`. This is purely a linkage change, purely cosmetic. It's essentially adjusting which symbols are made available for external use. There's no modification to the core functionality, no alterations to the execution flow of the code.

To be absolutely certain, I did a quick double-check, verifying the diff only contains the removal of those two lines. No code changes, no new functions, no logic alterations, nothing.

Therefore, considering the scope of this particular change, I am quite confident in classifying this as `WorthFuzzing=false`. It's a clean pass.

4/2

2026/08/12 13:04

tool

set-results

Args:

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of the kernel.",
  "WorthFuzzing": false
}

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only removes EXPORT_SYMBOL_GPL declarations for ovs_vport_alloc and ovs_vport_free. This is a linkage change and does not functionally alter the execution flow of the kernel.",
  "WorthFuzzing": false
}

5/1

2026/08/12 13:04

action

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)