AI Trajectory

Trajectory: (Expand/Collapse All)
Seq	Timestamp	Type	Name	Duration
0/0	2026/07/28 22:04	flow	patch-triage	0m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.", "WorthFuzzing": false }
1/1	2026/07/28 22:04	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit 0725d5ee78a95e639171ee881eb02a9da9dfdfc7\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Tue Jul 28 22:04:42 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec\nindex c732415662ef2..46e80970f7239 100644\n--- a/scripts/package/kernel.spec\n+++ b/scripts/package/kernel.spec\n@@ -67,7 +67,18 @@ This package provides debug information for the kernel image and modules from th\n %undefine _unique_debug_srcs\n %undefine _debugsource_packages\n %undefine _debuginfo_subpackages\n+\n+# Preserve .BTF and .BTF.base sections in kernel modules during debuginfo\n+# stripping. find-debuginfo.sh uses eu-strip which removes non-allocated ELF\n+# sections like .BTF by default. .BTF.base is required for BTF distillation\n+# support; without it, module BTF validation fails.\n+%global with_keep_section %(%{__find_debuginfo} --help 2\u003e\u00261 \| grep -c keep-section)\n+%if %{with_keep_section}\n+%global _find_debuginfo_opts -r --keep-section .BTF --keep-section .BTF.base\n+%else\n %global _find_debuginfo_opts -r\n+%endif\n+\n %global _missing_build_ids_terminate_build 1\n %global _no_recompute_build_ids 1\n %{debug_package}\n" }
2/1	2026/07/28 22:04	agent	patch-evaluator	0m Model: best-expensive Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.", "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 0725d5ee78a95e639171ee881eb02a9da9dfdfc7 Author: syz-cluster <triage@syzkaller.com> Date: Tue Jul 28 22:04:42 2026 +0000 syz-cluster: applied patch under review diff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec index c732415662ef2..46e80970f7239 100644 --- a/scripts/package/kernel.spec +++ b/scripts/package/kernel.spec @@ -67,7 +67,18 @@ This package provides debug information for the kernel image and modules from th %undefine _unique_debug_srcs %undefine _debugsource_packages %undefine _debuginfo_subpackages + +# Preserve .BTF and .BTF.base sections in kernel modules during debuginfo +# stripping. find-debuginfo.sh uses eu-strip which removes non-allocated ELF +# sections like .BTF by default. .BTF.base is required for BTF distillation +# support; without it, module BTF validation fails. +%global with_keep_section %(%{__find_debuginfo} --help 2>&1 \| grep -c keep-section) +%if %{with_keep_section} +%global _find_debuginfo_opts -r --keep-section .BTF --keep-section .BTF.base +%else %global _find_debuginfo_opts -r +%endif + %global _missing_build_ids_terminate_build 1 %global _no_recompute_build_ids 1 %{debug_package}
3/2	2026/07/28 22:04	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 2174 output: 66 thoughts: 133 Thoughts: My Assessment of this Patch Okay, so this patch is a straightforward one. It's touching the `scripts/package/kernel.spec` file, which means it's about how the kernel is packaged into an RPM, not about the kernel's actual functionality. Specifically, it's adding some RPM spec macros. These macros are designed to keep the `.BTF` and `.BTF.base` sections within kernel modules when debug information is being stripped. The crucial point is that this is a packaging change, a modification of the build and packaging process, rather than a modification to the kernel source itself. It's about preserving data after the build, not altering the build output itself. Therefore, from my perspective, the patch falls squarely outside the scope of something that needs to be fuzzed. Fuzzing focuses on finding vulnerabilities in code. This patch has nothing to do with code execution, memory management, or other aspects typically targeted by fuzzing. My decision is clear: WorthFuzzing: False.
4/2	2026/07/28 22:04	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.", "WorthFuzzing": false }

Trajectory: (Expand/Collapse All)

Seq

Timestamp

Type

Name

Duration

0/0

2026/07/28 22:04

flow

patch-triage

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.",
  "WorthFuzzing": false
}

1/1

2026/07/28 22:04

action

read-patch-diff

Args:

null

Results:

{
  "PatchDiff": "commit 0725d5ee78a95e639171ee881eb02a9da9dfdfc7\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Tue Jul 28 22:04:42 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec\nindex c732415662ef2..46e80970f7239 100644\n--- a/scripts/package/kernel.spec\n+++ b/scripts/package/kernel.spec\n@@ -67,7 +67,18 @@ This package provides debug information for the kernel image and modules from th\n %undefine _unique_debug_srcs\n %undefine _debugsource_packages\n %undefine _debuginfo_subpackages\n+\n+# Preserve .BTF and .BTF.base sections in kernel modules during debuginfo\n+# stripping. find-debuginfo.sh uses eu-strip which removes non-allocated ELF\n+# sections like .BTF by default. .BTF.base is required for BTF distillation\n+# support; without it, module BTF validation fails.\n+%global with_keep_section %(%{__find_debuginfo} --help 2\u003e\u00261 | grep -c keep-section)\n+%if %{with_keep_section}\n+%global _find_debuginfo_opts -r --keep-section .BTF --keep-section .BTF.base\n+%else\n %global _find_debuginfo_opts -r\n+%endif\n+\n %global _missing_build_ids_terminate_build 1\n %global _no_recompute_build_ids 1\n %{debug_package}\n"
}

2/1

2026/07/28 22:04

agent

patch-evaluator

Model:

best-expensive

Args:

null

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.",
  "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 0725d5ee78a95e639171ee881eb02a9da9dfdfc7
Author: syz-cluster <triage@syzkaller.com>
Date:   Tue Jul 28 22:04:42 2026 +0000

    syz-cluster: applied patch under review

diff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec
index c732415662ef2..46e80970f7239 100644
--- a/scripts/package/kernel.spec
+++ b/scripts/package/kernel.spec
@@ -67,7 +67,18 @@ This package provides debug information for the kernel image and modules from th
 %undefine _unique_debug_srcs
 %undefine _debugsource_packages
 %undefine _debuginfo_subpackages
+
+# Preserve .BTF and .BTF.base sections in kernel modules during debuginfo
+# stripping. find-debuginfo.sh uses eu-strip which removes non-allocated ELF
+# sections like .BTF by default. .BTF.base is required for BTF distillation
+# support; without it, module BTF validation fails.
+%global with_keep_section %(%{__find_debuginfo} --help 2>&1 | grep -c keep-section)
+%if %{with_keep_section}
+%global _find_debuginfo_opts -r --keep-section .BTF --keep-section .BTF.base
+%else
 %global _find_debuginfo_opts -r
+%endif
+
 %global _missing_build_ids_terminate_build 1
 %global _no_recompute_build_ids 1
 %{debug_package}

3/2

2026/07/28 22:04

llm

patch-evaluator

Model:

gemini-3.1-pro-preview

Args:

null

Results:

null

Tokens:

							input: 2174
							output: 66
							thoughts: 133

Thoughts:

**My Assessment of this Patch**

Okay, so this patch is a straightforward one. It's touching the `scripts/package/kernel.spec` file, which means it's about how the kernel is *packaged* into an RPM, not about the kernel's actual functionality. Specifically, it's adding some RPM spec macros. These macros are designed to keep the `.BTF` and `.BTF.base` sections within kernel modules when debug information is being stripped.

The crucial point is that this is a packaging change, a modification of the build and packaging process, rather than a modification to the kernel source itself. It's about preserving data *after* the build, not altering the build output itself. Therefore, from my perspective, the patch falls squarely outside the scope of something that needs to be fuzzed. Fuzzing focuses on finding vulnerabilities in *code*. This patch has nothing to do with code execution, memory management, or other aspects typically targeted by fuzzing. My decision is clear: WorthFuzzing: False.

4/2

2026/07/28 22:04

tool

set-results

Args:

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.",
  "WorthFuzzing": false
}

Results:

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies RPM packaging scripts (scripts/package/kernel.spec) to preserve BTF sections during debuginfo stripping. It does not contain any functional kernel code changes.",
  "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)