| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/07/16 13:49 | flow | patch-triage |
0mArgs:null Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch only adds user-space shell tests for nftables. It does not modify any kernel source code.",
"WorthFuzzing": false
} |
| 1/1 | 2026/07/16 13:49 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit 3eb0e5fde6f82731100d7294ef2191d877912659\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Thu Jul 16 13:49:12 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft b/tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft\nnew file mode 100644\nindex 00000000000000..9c38046f5b7e6c\n--- /dev/null\n+++ b/tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft\n@@ -0,0 +1,252 @@\n+{\n+ \"nftables\": [\n+ {\n+ \"metainfo\": {\n+ \"version\": \"VERSION\",\n+ \"release_name\": \"RELEASE_NAME\",\n+ \"json_schema_version\": 1\n+ }\n+ },\n+ {\n+ \"table\": {\n+ \"family\": \"ip\",\n+ \"name\": \"t\",\n+ \"handle\": 0\n+ }\n+ },\n+ {\n+ \"chain\": {\n+ \"family\": \"ip\",\n+ \"table\": \"t\",\n+ \"name\": \"c\",\n+ \"handle\": 0,\n+ \"type\": \"filter\",\n+ \"hook\": \"output\",\n+ \"prio\": -300,\n+ \"policy\": \"accept\"\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"ip\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"mangle\": {\n+ \"key\": {\n+ \"ct\": {\n+ \"key\": \"zone\"\n+ }\n+ },\n+ \"value\": 1\n+ }\n+ }\n+ ]\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"ip\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"match\": {\n+ \"op\": \"==\",\n+ \"left\": {\n+ \"ct\": {\n+ \"key\": \"saddr\",\n+ \"dir\": \"original\"\n+ }\n+ },\n+ \"right\": \"0.0.0.0\"\n+ }\n+ },\n+ {\n+ \"counter\": {\n+ \"packets\": 0,\n+ \"bytes\": 0\n+ }\n+ },\n+ {\n+ \"accept\": null\n+ }\n+ ]\n+ }\n+ },\n+ {\n+ \"table\": {\n+ \"family\": \"ip6\",\n+ \"name\": \"t\",\n+ \"handle\": 0\n+ }\n+ },\n+ {\n+ \"chain\": {\n+ \"family\": \"ip6\",\n+ \"table\": \"t\",\n+ \"name\": \"c\",\n+ \"handle\": 0,\n+ \"type\": \"filter\",\n+ \"hook\": \"output\",\n+ \"prio\": -300,\n+ \"policy\": \"accept\"\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"ip6\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"mangle\": {\n+ \"key\": {\n+ \"ct\": {\n+ \"key\": \"zone\"\n+ }\n+ },\n+ \"value\": 1\n+ }\n+ }\n+ ]\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"ip6\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"match\": {\n+ \"op\": \"==\",\n+ \"left\": {\n+ \"ct\": {\n+ \"key\": \"saddr\",\n+ \"dir\": \"original\"\n+ }\n+ },\n+ \"right\": \"::\"\n+ }\n+ },\n+ {\n+ \"counter\": {\n+ \"packets\": 0,\n+ \"bytes\": 0\n+ }\n+ },\n+ {\n+ \"accept\": null\n+ }\n+ ]\n+ }\n+ },\n+ {\n+ \"table\": {\n+ \"family\": \"inet\",\n+ \"name\": \"t\",\n+ \"handle\": 0\n+ }\n+ },\n+ {\n+ \"chain\": {\n+ \"family\": \"inet\",\n+ \"table\": \"t\",\n+ \"name\": \"c\",\n+ \"handle\": 0,\n+ \"type\": \"filter\",\n+ \"hook\": \"output\",\n+ \"prio\": -300,\n+ \"policy\": \"accept\"\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"inet\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"mangle\": {\n+ \"key\": {\n+ \"ct\": {\n+ \"key\": \"zone\"\n+ }\n+ },\n+ \"value\": 1\n+ }\n+ }\n+ ]\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"inet\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"match\": {\n+ \"op\": \"==\",\n+ \"left\": {\n+ \"ct\": {\n+ \"key\": \"ip saddr\",\n+ \"dir\": \"original\"\n+ }\n+ },\n+ \"right\": \"0.0.0.0\"\n+ }\n+ },\n+ {\n+ \"counter\": {\n+ \"packets\": 0,\n+ \"bytes\": 0\n+ }\n+ },\n+ {\n+ \"accept\": null\n+ }\n+ ]\n+ }\n+ },\n+ {\n+ \"rule\": {\n+ \"family\": \"inet\",\n+ \"table\": \"t\",\n+ \"chain\": \"c\",\n+ \"handle\": 0,\n+ \"expr\": [\n+ {\n+ \"match\": {\n+ \"op\": \"==\",\n+ \"left\": {\n+ \"ct\": {\n+ \"key\": \"ip6 saddr\",\n+ \"dir\": \"original\"\n+ }\n+ },\n+ \"right\": \"::\"\n+ }\n+ },\n+ {\n+ \"counter\": {\n+ \"packets\": 0,\n+ \"bytes\": 0\n+ }\n+ },\n+ {\n+ \"accept\": null\n+ }\n+ ]\n+ }\n+ }\n+ ]\n+}\ndiff --git a/tests/shell/testcases/packetpath/dumps/nft_ct_template.nft b/tests/shell/testcases/packetpath/dumps/nft_ct_template.nft\nnew file mode 100644\nindex 00000000000000..efe5dbb265a765\n--- /dev/null\n+++ b/tests/shell/testcases/packetpath/dumps/nft_ct_template.nft\n@@ -0,0 +1,22 @@\n+table ip t {\n+\tchain c {\n+\t\ttype filter hook output priority raw; policy accept;\n+\t\tct zone set 1\n+\t\tct original ip saddr 0.0.0.0 counter packets 0 bytes 0 accept\n+\t}\n+}\n+table ip6 t {\n+\tchain c {\n+\t\ttype filter hook output priority raw; policy accept;\n+\t\tct zone set 1\n+\t\tct original ip6 saddr :: counter packets 0 bytes 0 accept\n+\t}\n+}\n+table inet t {\n+\tchain c {\n+\t\ttype filter hook output priority raw; policy accept;\n+\t\tct zone set 1\n+\t\tct original ip saddr 0.0.0.0 counter packets 0 bytes 0 accept\n+\t\tct original ip6 saddr :: counter packets 0 bytes 0 accept\n+\t}\n+}\ndiff --git a/tests/shell/testcases/packetpath/nft_ct_template b/tests/shell/testcases/packetpath/nft_ct_template\nnew file mode 100755\nindex 00000000000000..02051f3345c9e6\n--- /dev/null\n+++ b/tests/shell/testcases/packetpath/nft_ct_template\n@@ -0,0 +1,38 @@\n+#!/bin/bash\n+\n+# test for kernel commit 3027ecbdb5fd (\"netfilter: nft_ct: bail out on template ct in get eval\")\n+\n+set -e\n+\n+$NFT -f - \u003c\u003cEOF\n+table ip t {\n+\tchain c {\n+\t\ttype filter hook output priority -300; policy accept;\n+\t\tct zone set 1\n+\t\tct original saddr 0.0.0.0 counter accept\n+\t}\n+}\n+\n+table ip6 t {\n+\tchain c {\n+\t\ttype filter hook output priority -300; policy accept;\n+\t\tct zone set 1\n+\t\tct original saddr :: counter accept\n+\t}\n+}\n+\n+table inet t {\n+\tchain c {\n+\t\ttype filter hook output priority -300; policy accept;\n+\t\tct zone set 1\n+\t\tct original ip saddr 0.0.0.0 counter accept\n+\t\tct original ip6 saddr :: counter accept\n+\t}\n+}\n+EOF\n+\n+ip link set lo up\n+ping -c 1 127.0.0.1\n+ping -c 1 ::1\n+\n+# counter validation via dump file.\n"
} |
| 2/1 | 2026/07/16 13:49 | agent | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch only adds user-space shell tests for nftables. It does not modify any kernel source code.",
"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 3eb0e5fde6f82731100d7294ef2191d877912659
Author: syz-cluster <triage@syzkaller.com>
Date: Thu Jul 16 13:49:12 2026 +0000
syz-cluster: applied patch under review
diff --git a/tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft b/tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft
new file mode 100644
index 00000000000000..9c38046f5b7e6c
--- /dev/null
+++ b/tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft
@@ -0,0 +1,252 @@
+{
+ "nftables": [
+ {
+ "metainfo": {
+ "version": "VERSION",
+ "release_name": "RELEASE_NAME",
+ "json_schema_version": 1
+ }
+ },
+ {
+ "table": {
+ "family": "ip",
+ "name": "t",
+ "handle": 0
+ }
+ },
+ {
+ "chain": {
+ "family": "ip",
+ "table": "t",
+ "name": "c",
+ "handle": 0,
+ "type": "filter",
+ "hook": "output",
+ "prio": -300,
+ "policy": "accept"
+ }
+ },
+ {
+ "rule": {
+ "family": "ip",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "mangle": {
+ "key": {
+ "ct": {
+ "key": "zone"
+ }
+ },
+ "value": 1
+ }
+ }
+ ]
+ }
+ },
+ {
+ "rule": {
+ "family": "ip",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "match": {
+ "op": "==",
+ "left": {
+ "ct": {
+ "key": "saddr",
+ "dir": "original"
+ }
+ },
+ "right": "0.0.0.0"
+ }
+ },
+ {
+ "counter": {
+ "packets": 0,
+ "bytes": 0
+ }
+ },
+ {
+ "accept": null
+ }
+ ]
+ }
+ },
+ {
+ "table": {
+ "family": "ip6",
+ "name": "t",
+ "handle": 0
+ }
+ },
+ {
+ "chain": {
+ "family": "ip6",
+ "table": "t",
+ "name": "c",
+ "handle": 0,
+ "type": "filter",
+ "hook": "output",
+ "prio": -300,
+ "policy": "accept"
+ }
+ },
+ {
+ "rule": {
+ "family": "ip6",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "mangle": {
+ "key": {
+ "ct": {
+ "key": "zone"
+ }
+ },
+ "value": 1
+ }
+ }
+ ]
+ }
+ },
+ {
+ "rule": {
+ "family": "ip6",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "match": {
+ "op": "==",
+ "left": {
+ "ct": {
+ "key": "saddr",
+ "dir": "original"
+ }
+ },
+ "right": "::"
+ }
+ },
+ {
+ "counter": {
+ "packets": 0,
+ "bytes": 0
+ }
+ },
+ {
+ "accept": null
+ }
+ ]
+ }
+ },
+ {
+ "table": {
+ "family": "inet",
+ "name": "t",
+ "handle": 0
+ }
+ },
+ {
+ "chain": {
+ "family": "inet",
+ "table": "t",
+ "name": "c",
+ "handle": 0,
+ "type": "filter",
+ "hook": "output",
+ "prio": -300,
+ "policy": "accept"
+ }
+ },
+ {
+ "rule": {
+ "family": "inet",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "mangle": {
+ "key": {
+ "ct": {
+ "key": "zone"
+ }
+ },
+ "value": 1
+ }
+ }
+ ]
+ }
+ },
+ {
+ "rule": {
+ "family": "inet",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "match": {
+ "op": "==",
+ "left": {
+ "ct": {
+ "key": "ip saddr",
+ "dir": "original"
+ }
+ },
+ "right": "0.0.0.0"
+ }
+ },
+ {
+ "counter": {
+ "packets": 0,
+ "bytes": 0
+ }
+ },
+ {
+ "accept": null
+ }
+ ]
+ }
+ },
+ {
+ "rule": {
+ "family": "inet",
+ "table": "t",
+ "chain": "c",
+ "handle": 0,
+ "expr": [
+ {
+ "match": {
+ "op": "==",
+ "left": {
+ "ct": {
+ "key": "ip6 saddr",
+ "dir": "original"
+ }
+ },
+ "right": "::"
+ }
+ },
+ {
+ "counter": {
+ "packets": 0,
+ "bytes": 0
+ }
+ },
+ {
+ "accept": null
+ }
+ ]
+ }
+ }
+ ]
+}
diff --git a/tests/shell/testcases/packetpath/dumps/nft_ct_template.nft b/tests/shell/testcases/packetpath/dumps/nft_ct_template.nft
new file mode 100644
index 00000000000000..efe5dbb265a765
--- /dev/null
+++ b/tests/shell/testcases/packetpath/dumps/nft_ct_template.nft
@@ -0,0 +1,22 @@
+table ip t {
+ chain c {
+ type filter hook output priority raw; policy accept;
+ ct zone set 1
+ ct original ip saddr 0.0.0.0 counter packets 0 bytes 0 accept
+ }
+}
+table ip6 t {
+ chain c {
+ type filter hook output priority raw; policy accept;
+ ct zone set 1
+ ct original ip6 saddr :: counter packets 0 bytes 0 accept
+ }
+}
+table inet t {
+ chain c {
+ type filter hook output priority raw; policy accept;
+ ct zone set 1
+ ct original ip saddr 0.0.0.0 counter packets 0 bytes 0 accept
+ ct original ip6 saddr :: counter packets 0 bytes 0 accept
+ }
+}
diff --git a/tests/shell/testcases/packetpath/nft_ct_template b/tests/shell/testcases/packetpath/nft_ct_template
new file mode 100755
index 00000000000000..02051f3345c9e6
--- /dev/null
+++ b/tests/shell/testcases/packetpath/nft_ct_template
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# test for kernel commit 3027ecbdb5fd ("netfilter: nft_ct: bail out on template ct in get eval")
+
+set -e
+
+$NFT -f - <<EOF
+table ip t {
+ chain c {
+ type filter hook output priority -300; policy accept;
+ ct zone set 1
+ ct original saddr 0.0.0.0 counter accept
+ }
+}
+
+table ip6 t {
+ chain c {
+ type filter hook output priority -300; policy accept;
+ ct zone set 1
+ ct original saddr :: counter accept
+ }
+}
+
+table inet t {
+ chain c {
+ type filter hook output priority -300; policy accept;
+ ct zone set 1
+ ct original ip saddr 0.0.0.0 counter accept
+ ct original ip6 saddr :: counter accept
+ }
+}
+EOF
+
+ip link set lo up
+ping -c 1 127.0.0.1
+ping -c 1 ::1
+
+# counter validation via dump file.
|
| 3/2 | 2026/07/16 13:49 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 4157 output: 53 thoughts: 200 Thoughts: **Analyzing the Netfilter Patch for Fuzzing Suitability**
Okay, let's break this down. The patch in question is adding test cases specifically for nftables, nestled within the `tests/shell/testcases/packetpath/` directory. These are user-space tests, which are important, but the crucial point is their target: they're designed to validate the behavior of the kernel commit `3027ecbdb5fd ("netfilter: nft_ct: bail out on template ct in get eval")`. However, and this is key, the patch itself doesn't introduce any modifications to the *kernel's source code*.
Now, the natural instinct is to assume that, given the absence of kernel code changes, we shouldn't mark this as fuzzing-worthy. But let me just double-check the diff to be absolutely certain. Okay, the diff only includes changes to these files:
* `tests/shell/testcases/packetpath/dumps/nft_ct_template.json-nft`
* `tests/shell/testcases/packetpath/dumps/nft_ct_template.nft`
* `tests/shell/testcases/packetpath/nft_ct_template`
They are clearly shell scripts and dump files intended for testing nftables. There is absolutely no C code and no changes to the core kernel logic. Given this analysis, I'm confident in my initial assessment.
Therefore, I'll proceed to call `set-results` with `WorthFuzzing=false`.
|
| 4/2 | 2026/07/16 13:49 | tool | set-results |
0mArgs:{
"EnableConfigs": [],
"FocusSymbols": [],
"Reasoning": "The patch only adds user-space shell tests for nftables. It does not modify any kernel source code.",
"WorthFuzzing": false
}Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch only adds user-space shell tests for nftables. It does not modify any kernel source code.",
"WorthFuzzing": false
} |
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|---|