AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch only modifies a selftest (tools/testing/selftests/nci/nci_dev.c) and makes no functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit 8e8dd98a3f93431411177eed614fa8668ebedc06\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Aug 17 19:11:47 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 312f84ee0444f..4e7a5856f7ea3 100644\n--- a/tools/testing/selftests/nci/nci_dev.c\n+++ b/tools/testing/selftests/nci/nci_dev.c\n@@ -6,6 +6,7 @@\n  * Test code for nci\n  */\n \n+#include \u003cstdint.h\u003e\n #include \u003cstdlib.h\u003e\n #include \u003cerrno.h\u003e\n #include \u003cstring.h\u003e\n@@ -404,7 +405,7 @@ FIXTURE_SETUP(NCI)\n \tstruct msgtemplate msg;\n \tpthread_t thread_t;\n \t__u32 event_group;\n-\tint status;\n+\tintptr_t status;\n \tint rc;\n \n \tself-\u003eopen_state = false;\n@@ -497,7 +498,7 @@ static void *virtual_deinit_v2(void *data)\n FIXTURE_TEARDOWN(NCI)\n {\n \tpthread_t thread_t;\n-\tint status;\n+\tintptr_t status;\n \tint rc;\n \n \tif (self-\u003eopen_state) {\n@@ -585,7 +586,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p\n \tvoid *nla_start_poll_data[2] = {\u0026dev_idx, \u0026proto};\n \tint nla_start_poll_len[2] = {4, 4};\n \tpthread_t thread_t;\n-\tint status;\n+\tintptr_t status;\n \tint rc;\n \n \trc = pthread_create(\u0026thread_t, NULL, virtual_poll_start,\n@@ -605,7 +606,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p\n int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid)\n {\n \tpthread_t thread_t;\n-\tint status;\n+\tintptr_t status;\n \tint rc;\n \n \trc = pthread_create(\u0026thread_t, NULL, virtual_poll_stop,\n@@ -816,7 +817,7 @@ int disconnect_tag(int nfc_sock, int virtual_fd)\n {\n \tpthread_t thread_t;\n \tchar buf[256];\n-\tint status;\n+\tintptr_t status;\n \tint len;\n \n \tsend(nfc_sock, \u0026nci_t4t_select_cmd3[3], sizeof(nci_t4t_select_cmd3) - 3, 0);\n@@ -860,7 +861,7 @@ TEST_F(NCI, deinit)\n {\n \tstruct msgtemplate msg;\n \tpthread_t thread_t;\n-\tint status;\n+\tintptr_t status;\n \tint rc;\n \n \trc = get_nci_devid(self-\u003esd, self-\u003efid, self-\u003epid, self-\u003edev_idex,\n"
}

best-expensive

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest (tools/testing/selftests/nci/nci_dev.c) and makes no functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

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.

For your convenience, here is the diff of the changes:
commit 8e8dd98a3f93431411177eed614fa8668ebedc06
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Aug 17 19:11:47 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 312f84ee0444f..4e7a5856f7ea3 100644
--- a/tools/testing/selftests/nci/nci_dev.c
+++ b/tools/testing/selftests/nci/nci_dev.c
@@ -6,6 +6,7 @@
  * Test code for nci
  */
 
+#include <stdint.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <string.h>
@@ -404,7 +405,7 @@ FIXTURE_SETUP(NCI)
 	struct msgtemplate msg;
 	pthread_t thread_t;
 	__u32 event_group;
-	int status;
+	intptr_t status;
 	int rc;
 
 	self->open_state = false;
@@ -497,7 +498,7 @@ static void *virtual_deinit_v2(void *data)
 FIXTURE_TEARDOWN(NCI)
 {
 	pthread_t thread_t;
-	int status;
+	intptr_t status;
 	int rc;
 
 	if (self->open_state) {
@@ -585,7 +586,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p
 	void *nla_start_poll_data[2] = {&dev_idx, &proto};
 	int nla_start_poll_len[2] = {4, 4};
 	pthread_t thread_t;
-	int status;
+	intptr_t status;
 	int rc;
 
 	rc = pthread_create(&thread_t, NULL, virtual_poll_start,
@@ -605,7 +606,7 @@ int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int p
 int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid)
 {
 	pthread_t thread_t;
-	int status;
+	intptr_t status;
 	int rc;
 
 	rc = pthread_create(&thread_t, NULL, virtual_poll_stop,
@@ -816,7 +817,7 @@ int disconnect_tag(int nfc_sock, int virtual_fd)
 {
 	pthread_t thread_t;
 	char buf[256];
-	int status;
+	intptr_t status;
 	int len;
 
 	send(nfc_sock, &nci_t4t_select_cmd3[3], sizeof(nci_t4t_select_cmd3) - 3, 0);
@@ -860,7 +861,7 @@ TEST_F(NCI, deinit)
 {
 	struct msgtemplate msg;
 	pthread_t thread_t;
-	int status;
+	intptr_t status;
 	int rc;
 
 	rc = get_nci_devid(self->sd, self->fid, self->pid, self->dev_idex,

gemini-3.1-pro-preview

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							input: 2616
							output: 68
							thoughts: 94
						

**WorthFuzzing=False: Analysis of a Selftest Patch**

Okay, so I've got this patch here, and it's touching `tools/testing/selftests/nci/nci_dev.c`. Right away, my radar goes up. This is a *selftest*, a user-space utility used for testing, not core kernel code. That's key. Now, looking closer, I see they're changing `int status` to `intptr_t status` in a few functions, and they've added `<stdint.h>`. Fine. That's likely a necessary change for portability or to handle larger return values from whatever the test is checking.

The important thing is this: this is *internal* to the selftest environment. It's not a functional modification to the kernel itself. It won't introduce any new code paths or behaviors in the running kernel that would be interesting to fuzz. No new kernel APIs are being exposed. No existing ones are being altered in a way that would trigger new vulnerability surface. This patch is merely tweaking how the selftest *itself* operates, not how the kernel does.

Therefore, after a thorough review, I'm confident in setting `WorthFuzzing=false`. It's a non-starter in terms of identifying kernel vulnerabilities.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest (tools/testing/selftests/nci/nci_dev.c) and makes no functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest (tools/testing/selftests/nci/nci_dev.c) and makes no functional changes to the kernel code itself.",
  "WorthFuzzing": false
}

{
  "WorthFuzzing": false
}

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