AI Trajectory

Trajectory: (Expand/Collapse All)
Seq	Timestamp	Type	Name	Duration
0/0	2026/07/27 13:51	flow	patch-triage	0m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a userspace selftest (tools/testing/selftests/nci/nci_dev.c) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false }
1/1	2026/07/27 13:51	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit 1d36e06999319ad4b8f3b663e2333638e8fe1514\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Mon Jul 27 13:51:35 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/nci/nci_dev.c b/tools/testing/selftests/nci/nci_dev.c\nindex 312f84ee0444fd..d2ce79daae39c9 100644\n--- a/tools/testing/selftests/nci/nci_dev.c\n+++ b/tools/testing/selftests/nci/nci_dev.c\n@@ -438,7 +438,7 @@ FIXTURE_SETUP(NCI)\n \telse\n \t\trc = pthread_create(\u0026thread_t, NULL, virtual_dev_open,\n \t\t\t\t (void )\u0026self-\u003evirtual_nci_fd);\n-\tASSERT_GT(rc, -1);\n+\tASSERT_EQ(rc, 0);\n \n \trc = send_cmd_with_idx(self-\u003esd, self-\u003efid, self-\u003epid,\n \t\t\t NFC_CMD_DEV_UP, self-\u003edev_idex);\n@@ -509,7 +509,7 @@ FIXTURE_TEARDOWN(NCI)\n \t\t\trc = pthread_create(\u0026thread_t, NULL, virtual_deinit,\n \t\t\t\t\t (void )\u0026self-\u003evirtual_nci_fd);\n \n-\t\tASSERT_GT(rc, -1);\n+\t\tASSERT_EQ(rc, 0);\n \t\trc = send_cmd_with_idx(self-\u003esd, self-\u003efid, self-\u003epid,\n \t\t\t\t NFC_CMD_DEV_DOWN, self-\u003edev_idex);\n \t\tEXPECT_EQ(rc, 0);\n@@ -590,7 +590,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p\n \n \trc = pthread_create(\u0026thread_t, NULL, virtual_poll_start,\n \t\t\t (void )\u0026virtual_fd);\n-\tif (rc \u003c 0)\n+\tif (rc)\n \t\treturn rc;\n \n \trc = send_cmd_mt_nla(sd, fid, pid, NFC_CMD_START_POLL, 2, nla_start_poll_type,\n@@ -610,7 +610,7 @@ int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid)\n \n \trc = pthread_create(\u0026thread_t, NULL, virtual_poll_stop,\n \t\t\t (void )\u0026virtual_fd);\n-\tif (rc \u003c 0)\n+\tif (rc)\n \t\treturn rc;\n \n \trc = send_cmd_with_idx(sd, fid, pid,\n@@ -874,7 +874,7 @@ TEST_F(NCI, deinit)\n \telse\n \t\trc = pthread_create(\u0026thread_t, NULL, virtual_deinit,\n \t\t\t\t (void *)\u0026self-\u003evirtual_nci_fd);\n-\tASSERT_GT(rc, -1);\n+\tASSERT_EQ(rc, 0);\n \n \trc = send_cmd_with_idx(self-\u003esd, self-\u003efid, self-\u003epid,\n \t\t\t NFC_CMD_DEV_DOWN, self-\u003edev_idex);\n" }
2/1	2026/07/27 13:51	agent	patch-evaluator	0m Model: best-expensive Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a userspace selftest (tools/testing/selftests/nci/nci_dev.c) 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). - 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 1d36e06999319ad4b8f3b663e2333638e8fe1514 Author: syz-cluster <triage@syzkaller.com> Date: Mon Jul 27 13:51:35 2026 +0000 syz-cluster: applied patch under review diff --git a/tools/testing/selftests/nci/nci_dev.c b/tools/testing/selftests/nci/nci_dev.c index 312f84ee0444fd..d2ce79daae39c9 100644 --- a/tools/testing/selftests/nci/nci_dev.c +++ b/tools/testing/selftests/nci/nci_dev.c @@ -438,7 +438,7 @@ FIXTURE_SETUP(NCI) else rc = pthread_create(&thread_t, NULL, virtual_dev_open, (void )&self->virtual_nci_fd); - ASSERT_GT(rc, -1); + ASSERT_EQ(rc, 0); rc = send_cmd_with_idx(self->sd, self->fid, self->pid, NFC_CMD_DEV_UP, self->dev_idex); @@ -509,7 +509,7 @@ FIXTURE_TEARDOWN(NCI) rc = pthread_create(&thread_t, NULL, virtual_deinit, (void )&self->virtual_nci_fd); - ASSERT_GT(rc, -1); + ASSERT_EQ(rc, 0); rc = send_cmd_with_idx(self->sd, self->fid, self->pid, NFC_CMD_DEV_DOWN, self->dev_idex); EXPECT_EQ(rc, 0); @@ -590,7 +590,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p rc = pthread_create(&thread_t, NULL, virtual_poll_start, (void )&virtual_fd); - if (rc < 0) + if (rc) return rc; rc = send_cmd_mt_nla(sd, fid, pid, NFC_CMD_START_POLL, 2, nla_start_poll_type, @@ -610,7 +610,7 @@ int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid) rc = pthread_create(&thread_t, NULL, virtual_poll_stop, (void )&virtual_fd); - if (rc < 0) + if (rc) return rc; rc = send_cmd_with_idx(sd, fid, pid, @@ -874,7 +874,7 @@ TEST_F(NCI, deinit) else rc = pthread_create(&thread_t, NULL, virtual_deinit, (void *)&self->virtual_nci_fd); - ASSERT_GT(rc, -1); + ASSERT_EQ(rc, 0); rc = send_cmd_with_idx(self->sd, self->fid, self->pid, NFC_CMD_DEV_DOWN, self->dev_idex);
3/2	2026/07/27 13:51	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 2635 output: 72 thoughts: 118 Thoughts: WorthFuzzing=False: Modifying Selftest Assertions Okay, so this patch is touching `tools/testing/selftests/nci/nci_dev.c`. I see the core of the change is focused on how we're handling the return values of `pthread_create` within the selftests. Specifically, we're swapping out `ASSERT_GT(rc, -1)` for `ASSERT_EQ(rc, 0)` and changing `if (rc < 0)` to `if (rc)`. Hmm, this is strictly about the testing infrastructure, right? It's tightening up the assertions used to validate the behavior of the tests themselves, and simplifying error checking for this part of the codebase. Crucially, it's not introducing any functional modifications to the kernel code that could potentially reveal new fuzzing targets or trigger previously unreached code paths. Since this patch purely affects the selftests and doesn't introduce kernel code changes, it's not relevant for fuzzing analysis. No new attack surface is added here. Therefore, for this particular patch, my assessment is straightforward: WorthFuzzing=false. I'm not seeing anything that warrants deeper investigation from a fuzzing perspective.
4/2	2026/07/27 13:51	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "The patch only modifies a userspace selftest (tools/testing/selftests/nci/nci_dev.c) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a userspace selftest (tools/testing/selftests/nci/nci_dev.c) 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

2026/07/27 13:51

flow

patch-triage

Args:

null

Results:

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

1/1

2026/07/27 13:51

action

read-patch-diff

Args:

null

Results:

{
  "PatchDiff": "commit 1d36e06999319ad4b8f3b663e2333638e8fe1514\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Jul 27 13:51:35 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/nci/nci_dev.c b/tools/testing/selftests/nci/nci_dev.c\nindex 312f84ee0444fd..d2ce79daae39c9 100644\n--- a/tools/testing/selftests/nci/nci_dev.c\n+++ b/tools/testing/selftests/nci/nci_dev.c\n@@ -438,7 +438,7 @@ FIXTURE_SETUP(NCI)\n \telse\n \t\trc = pthread_create(\u0026thread_t, NULL, virtual_dev_open,\n \t\t\t\t    (void *)\u0026self-\u003evirtual_nci_fd);\n-\tASSERT_GT(rc, -1);\n+\tASSERT_EQ(rc, 0);\n \n \trc = send_cmd_with_idx(self-\u003esd, self-\u003efid, self-\u003epid,\n \t\t\t       NFC_CMD_DEV_UP, self-\u003edev_idex);\n@@ -509,7 +509,7 @@ FIXTURE_TEARDOWN(NCI)\n \t\t\trc = pthread_create(\u0026thread_t, NULL, virtual_deinit,\n \t\t\t\t\t    (void *)\u0026self-\u003evirtual_nci_fd);\n \n-\t\tASSERT_GT(rc, -1);\n+\t\tASSERT_EQ(rc, 0);\n \t\trc = send_cmd_with_idx(self-\u003esd, self-\u003efid, self-\u003epid,\n \t\t\t\t       NFC_CMD_DEV_DOWN, self-\u003edev_idex);\n \t\tEXPECT_EQ(rc, 0);\n@@ -590,7 +590,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p\n \n \trc = pthread_create(\u0026thread_t, NULL, virtual_poll_start,\n \t\t\t    (void *)\u0026virtual_fd);\n-\tif (rc \u003c 0)\n+\tif (rc)\n \t\treturn rc;\n \n \trc = send_cmd_mt_nla(sd, fid, pid, NFC_CMD_START_POLL, 2, nla_start_poll_type,\n@@ -610,7 +610,7 @@ int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid)\n \n \trc = pthread_create(\u0026thread_t, NULL, virtual_poll_stop,\n \t\t\t    (void *)\u0026virtual_fd);\n-\tif (rc \u003c 0)\n+\tif (rc)\n \t\treturn rc;\n \n \trc = send_cmd_with_idx(sd, fid, pid,\n@@ -874,7 +874,7 @@ TEST_F(NCI, deinit)\n \telse\n \t\trc = pthread_create(\u0026thread_t, NULL, virtual_deinit,\n \t\t\t\t    (void *)\u0026self-\u003evirtual_nci_fd);\n-\tASSERT_GT(rc, -1);\n+\tASSERT_EQ(rc, 0);\n \n \trc = send_cmd_with_idx(self-\u003esd, self-\u003efid, self-\u003epid,\n \t\t\t       NFC_CMD_DEV_DOWN, self-\u003edev_idex);\n"
}

2/1

2026/07/27 13:51

agent

patch-evaluator

Model:

best-expensive

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a userspace selftest (tools/testing/selftests/nci/nci_dev.c) 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).
- 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 1d36e06999319ad4b8f3b663e2333638e8fe1514
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Jul 27 13:51:35 2026 +0000

    syz-cluster: applied patch under review

diff --git a/tools/testing/selftests/nci/nci_dev.c b/tools/testing/selftests/nci/nci_dev.c
index 312f84ee0444fd..d2ce79daae39c9 100644
--- a/tools/testing/selftests/nci/nci_dev.c
+++ b/tools/testing/selftests/nci/nci_dev.c
@@ -438,7 +438,7 @@ FIXTURE_SETUP(NCI)
 	else
 		rc = pthread_create(&thread_t, NULL, virtual_dev_open,
 				    (void *)&self->virtual_nci_fd);
-	ASSERT_GT(rc, -1);
+	ASSERT_EQ(rc, 0);
 
 	rc = send_cmd_with_idx(self->sd, self->fid, self->pid,
 			       NFC_CMD_DEV_UP, self->dev_idex);
@@ -509,7 +509,7 @@ FIXTURE_TEARDOWN(NCI)
 			rc = pthread_create(&thread_t, NULL, virtual_deinit,
 					    (void *)&self->virtual_nci_fd);
 
-		ASSERT_GT(rc, -1);
+		ASSERT_EQ(rc, 0);
 		rc = send_cmd_with_idx(self->sd, self->fid, self->pid,
 				       NFC_CMD_DEV_DOWN, self->dev_idex);
 		EXPECT_EQ(rc, 0);
@@ -590,7 +590,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p
 
 	rc = pthread_create(&thread_t, NULL, virtual_poll_start,
 			    (void *)&virtual_fd);
-	if (rc < 0)
+	if (rc)
 		return rc;
 
 	rc = send_cmd_mt_nla(sd, fid, pid, NFC_CMD_START_POLL, 2, nla_start_poll_type,
@@ -610,7 +610,7 @@ int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid)
 
 	rc = pthread_create(&thread_t, NULL, virtual_poll_stop,
 			    (void *)&virtual_fd);
-	if (rc < 0)
+	if (rc)
 		return rc;
 
 	rc = send_cmd_with_idx(sd, fid, pid,
@@ -874,7 +874,7 @@ TEST_F(NCI, deinit)
 	else
 		rc = pthread_create(&thread_t, NULL, virtual_deinit,
 				    (void *)&self->virtual_nci_fd);
-	ASSERT_GT(rc, -1);
+	ASSERT_EQ(rc, 0);
 
 	rc = send_cmd_with_idx(self->sd, self->fid, self->pid,
 			       NFC_CMD_DEV_DOWN, self->dev_idex);

3/2

2026/07/27 13:51

llm

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

null

Tokens:

							input: 2635
							output: 72
							thoughts: 118

Thoughts:

**WorthFuzzing=False: Modifying Selftest Assertions**

Okay, so this patch is touching `tools/testing/selftests/nci/nci_dev.c`. I see the core of the change is focused on how we're handling the return values of `pthread_create` within the selftests. Specifically, we're swapping out `ASSERT_GT(rc, -1)` for `ASSERT_EQ(rc, 0)` and changing `if (rc < 0)` to `if (rc)`. Hmm, this is strictly about the testing infrastructure, right? It's tightening up the assertions used to validate the behavior of the tests themselves, and simplifying error checking for this part of the codebase.

Crucially, it's *not* introducing any functional modifications to the kernel code that could potentially reveal new fuzzing targets or trigger previously unreached code paths. Since this patch purely affects the selftests and doesn't introduce kernel code changes, it's not relevant for fuzzing analysis. No new attack surface is added here.

Therefore, for this particular patch, my assessment is straightforward: WorthFuzzing=false. I'm not seeing anything that warrants deeper investigation from a fuzzing perspective.

4/2

2026/07/27 13:51

tool

set-results

Args:

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

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a userspace selftest (tools/testing/selftests/nci/nci_dev.c) 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)