AI Trajectory

Trajectory: (Expand/Collapse All)
Seq	Timestamp	Type	Name	Duration
0/0	2026/07/01 00:28	flow	patch-triage	0m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/net/lib.sh) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false }
1/1	2026/07/01 00:28	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit a4b9d676ca5600d45f4cc511edb83c6128657ec4\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Jul 1 00:28:04 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh\nindex b40694573f4c7d..d030d45c0e603f 100644\n--- a/tools/testing/selftests/net/lib.sh\n+++ b/tools/testing/selftests/net/lib.sh\n@@ -70,12 +70,33 @@ ksft_exit_status_merge()\n \t\t$ksft_xfail $ksft_pass $ksft_skip $ksft_fail\n }\n \n+timestamp_ms()\n+{\n+\tlocal now\n+\tlocal seconds\n+\tlocal nanoseconds\n+\n+\tnow=$(date -u +%s:%N) \|\| return\n+\tseconds=${now%:}\n+\tnanoseconds=${now#:}\n+\n+\tif [[ $nanoseconds =~ ^[0-9]+$ ]]; then\n+\t\tnanoseconds=${nanoseconds:0:9}\n+\telse\n+\t\tnanoseconds=0\n+\tfi\n+\n+\techo $((seconds * 1000 + 10#$nanoseconds / 1000000))\n+}\n+\n loopy_wait()\n {\n \tlocal sleep_cmd=$1; shift\n \tlocal timeout_ms=$1; shift\n+\tlocal start_time\n+\tlocal current_time\n \n-\tlocal start_time=\"$(date -u +%s%3N)\"\n+\tstart_time=$(timestamp_ms) \|\| return\n \twhile true\n \tdo\n \t\tlocal out\n@@ -84,7 +105,7 @@ loopy_wait()\n \t\t\treturn 0\n \t\tfi\n \n-\t\tlocal current_time=\"$(date -u +%s%3N)\"\n+\t\tcurrent_time=$(timestamp_ms) \|\| return\n \t\tif ((current_time - start_time \u003e timeout_ms)); then\n \t\t\techo -n \"$out\"\n \t\t\treturn 1\n" }
2/1	2026/07/01 00:28	agent	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/net/lib.sh) 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). 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. 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. Do not list too generic configs (we already have them enabled). Only list those that specifically cover the modified code. 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 a4b9d676ca5600d45f4cc511edb83c6128657ec4 Author: syz-cluster <triage@syzkaller.com> Date: Wed Jul 1 00:28:04 2026 +0000 syz-cluster: applied patch under review diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh index b40694573f4c7d..d030d45c0e603f 100644 --- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -70,12 +70,33 @@ ksft_exit_status_merge() $ksft_xfail $ksft_pass $ksft_skip $ksft_fail } +timestamp_ms() +{ + local now + local seconds + local nanoseconds + + now=$(date -u +%s:%N) \|\| return + seconds=${now%:} + nanoseconds=${now#:} + + if [[ $nanoseconds =~ ^[0-9]+$ ]]; then + nanoseconds=${nanoseconds:0:9} + else + nanoseconds=0 + fi + + echo $((seconds * 1000 + 10#$nanoseconds / 1000000)) +} + loopy_wait() { local sleep_cmd=$1; shift local timeout_ms=$1; shift + local start_time + local current_time - local start_time="$(date -u +%s%3N)" + start_time=$(timestamp_ms) \|\| return while true do local out @@ -84,7 +105,7 @@ loopy_wait() return 0 fi - local current_time="$(date -u +%s%3N)" + current_time=$(timestamp_ms) \|\| return if ((current_time - start_time > timeout_ms)); then echo -n "$out" return 1
3/2	2026/07/01 00:28	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 2110 output: 67 thoughts: 95 Thoughts: Assessing the Impact of the Patch on Kernel Fuzzing Okay, let's break this down. The patch is touching `tools/testing/selftests/net/lib.sh`. Right away, that's a key indicator – this is in the testing framework, specifically a self-test script. It's not touching core kernel code, which is the immediate red flag for fuzzing considerations. The core change is the introduction of a `timestamp_ms` function and its integration into `loopy_wait`, replacing the older `date -u +%s%3N` call. This is simply a timing implementation tweak within a testing script. It's essentially a minor refinement of the test environment itself. Therefore, because this change only affects the test infrastructure and not the kernel's actual functionality, any value for `WorthFuzzing` should be set to `false`. There are no kernel functions to be fuzzed here as the kernel itself has not been altered. We're talking about improvements to the testing methodology, not the tested code.
4/2	2026/07/01 00:28	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/net/lib.sh) and does not make any functional changes to the kernel code itself.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/net/lib.sh) 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

2026/07/01 00:28

flow

patch-triage

Args:

null

Results:

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

1/1

2026/07/01 00:28

action

read-patch-diff

Args:

null

Results:

{
  "PatchDiff": "commit a4b9d676ca5600d45f4cc511edb83c6128657ec4\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Wed Jul 1 00:28:04 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh\nindex b40694573f4c7d..d030d45c0e603f 100644\n--- a/tools/testing/selftests/net/lib.sh\n+++ b/tools/testing/selftests/net/lib.sh\n@@ -70,12 +70,33 @@ ksft_exit_status_merge()\n \t\t$ksft_xfail $ksft_pass $ksft_skip $ksft_fail\n }\n \n+timestamp_ms()\n+{\n+\tlocal now\n+\tlocal seconds\n+\tlocal nanoseconds\n+\n+\tnow=$(date -u +%s:%N) || return\n+\tseconds=${now%:*}\n+\tnanoseconds=${now#*:}\n+\n+\tif [[ $nanoseconds =~ ^[0-9]+$ ]]; then\n+\t\tnanoseconds=${nanoseconds:0:9}\n+\telse\n+\t\tnanoseconds=0\n+\tfi\n+\n+\techo $((seconds * 1000 + 10#$nanoseconds / 1000000))\n+}\n+\n loopy_wait()\n {\n \tlocal sleep_cmd=$1; shift\n \tlocal timeout_ms=$1; shift\n+\tlocal start_time\n+\tlocal current_time\n \n-\tlocal start_time=\"$(date -u +%s%3N)\"\n+\tstart_time=$(timestamp_ms) || return\n \twhile true\n \tdo\n \t\tlocal out\n@@ -84,7 +105,7 @@ loopy_wait()\n \t\t\treturn 0\n \t\tfi\n \n-\t\tlocal current_time=\"$(date -u +%s%3N)\"\n+\t\tcurrent_time=$(timestamp_ms) || return\n \t\tif ((current_time - start_time \u003e timeout_ms)); then\n \t\t\techo -n \"$out\"\n \t\t\treturn 1\n"
}

2/1

2026/07/01 00:28

agent

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/net/lib.sh) 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).

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.
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.
   Do not list too generic configs (we already have them enabled). Only list those that
   specifically cover the modified code. 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 a4b9d676ca5600d45f4cc511edb83c6128657ec4
Author: syz-cluster <triage@syzkaller.com>
Date:   Wed Jul 1 00:28:04 2026 +0000

    syz-cluster: applied patch under review

diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index b40694573f4c7d..d030d45c0e603f 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -70,12 +70,33 @@ ksft_exit_status_merge()
 		$ksft_xfail $ksft_pass $ksft_skip $ksft_fail
 }
 
+timestamp_ms()
+{
+	local now
+	local seconds
+	local nanoseconds
+
+	now=$(date -u +%s:%N) || return
+	seconds=${now%:*}
+	nanoseconds=${now#*:}
+
+	if [[ $nanoseconds =~ ^[0-9]+$ ]]; then
+		nanoseconds=${nanoseconds:0:9}
+	else
+		nanoseconds=0
+	fi
+
+	echo $((seconds * 1000 + 10#$nanoseconds / 1000000))
+}
+
 loopy_wait()
 {
 	local sleep_cmd=$1; shift
 	local timeout_ms=$1; shift
+	local start_time
+	local current_time
 
-	local start_time="$(date -u +%s%3N)"
+	start_time=$(timestamp_ms) || return
 	while true
 	do
 		local out
@@ -84,7 +105,7 @@ loopy_wait()
 			return 0
 		fi
 
-		local current_time="$(date -u +%s%3N)"
+		current_time=$(timestamp_ms) || return
 		if ((current_time - start_time > timeout_ms)); then
 			echo -n "$out"
 			return 1

3/2

2026/07/01 00:28

llm

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

null

Tokens:

							input: 2110
							output: 67
							thoughts: 95

Thoughts:

**Assessing the Impact of the Patch on Kernel Fuzzing**

Okay, let's break this down. The patch is touching `tools/testing/selftests/net/lib.sh`. Right away, that's a key indicator – this is in the testing framework, specifically a self-test script. It's *not* touching core kernel code, which is the immediate red flag for fuzzing considerations.

The core change is the introduction of a `timestamp_ms` function and its integration into `loopy_wait`, replacing the older `date -u +%s%3N` call. This is simply a timing implementation tweak within a testing script. It's essentially a minor refinement of the test environment itself.

Therefore, because this change only affects the test infrastructure and not the kernel's actual functionality, any value for `WorthFuzzing` should be set to `false`. There are no kernel functions to be fuzzed here as the kernel itself has not been altered. We're talking about improvements to the *testing* methodology, not the *tested* code.

4/2

2026/07/01 00:28

tool

set-results

Args:

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

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies a selftest script (tools/testing/selftests/net/lib.sh) 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)