AI Trajectory


Trajectory: (Expand/Collapse All)
Seq Timestamp Type Name Duration
0/0 2026/08/03 23:26 flow patch-triage
0m Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftests (tools/testing/selftests/mm/) and does not change any kernel code.",
  "WorthFuzzing": false
}
1/1 2026/08/03 23:26 action read-patch-diff
0m Args: 
null

Results: 
{
  "PatchDiff": "commit ca45af836e007f77b61e18556412386f969aa6a4\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Aug 3 23:26:37 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/mm/.gitignore b/tools/testing/selftests/mm/.gitignore\nindex 83ad9454dd9d1..fcd892ed21e32 100644\n--- a/tools/testing/selftests/mm/.gitignore\n+++ b/tools/testing/selftests/mm/.gitignore\n@@ -1,63 +1,10 @@\n # SPDX-License-Identifier: GPL-2.0-only\n-cow\n-hugepage-mmap\n-hugepage-mremap\n-hugepage-shm\n-hugepage-vmemmap\n-hugetlb-madvise\n-hugetlb-read-hwpoison\n-hugetlb-soft-offline\n-khugepaged\n-map_hugetlb\n-map_populate\n-thuge-gen\n-compaction_test\n-memory-failure\n-migration\n-mlock2-tests\n-mrelease_test\n-mremap_dontunmap\n-mremap_test\n-on-fault-limit\n-transhuge-stress\n-pagemap_ioctl\n-pfnmap\n-process_madv\n-*.tmp*\n-protection_keys\n-protection_keys_32\n-protection_keys_64\n-madv_populate\n-uffd-stress\n-uffd-unit-tests\n-uffd-wp-mremap\n-mlock-intersect-test\n-mlock-random-test\n-virtual_address_range\n-gup_test\n-va_128TBswitch\n-map_fixed_noreplace\n-write_to_hugetlbfs\n-hmm-tests\n-memfd_secret\n-soft-dirty\n-split_huge_page_test\n-ksm_tests\n-local_config.h\n-local_config.mk\n-ksm_functional_tests\n-mdwe_test\n-gup_longterm\n-mkdirty\n-va_high_addr_switch\n-hugetlb_fault_after_madv\n-hugetlb_madv_vs_map\n-mseal_test\n-droppable\n-hugetlb_dio\n-pkey_sighandler_tests_32\n-pkey_sighandler_tests_64\n-guard-regions\n-merge\n-prctl_thp_disable\n-rmap\n+*\n+!/**/\n+!*.c\n+!*.h\n+!*.sh\n+!.gitignore\n+!Makefile\n+!config\n+!settings\ndiff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile\nindex 7a5de4e9bf520..32f4b016b74f0 100644\n--- a/tools/testing/selftests/mm/Makefile\n+++ b/tools/testing/selftests/mm/Makefile\n@@ -5,7 +5,7 @@\n # script so kunit knows to run it, and add it to the list below.\n # If you do not YOUR TESTS WILL NOT RUN IN THE CI.\n \n-LOCAL_HDRS += $(selfdir)/mm/local_config.h $(top_srcdir)/mm/gup_test.h\n+LOCAL_HDRS += $(selfdir)/mm/local_config.h_gen $(top_srcdir)/mm/gup_test.h\n LOCAL_HDRS += $(selfdir)/mm/mseal_helpers.h\n \n include local_config.mk\n@@ -259,10 +259,10 @@ $(OUTPUT)/migration: LDLIBS += -lnuma\n \n $(OUTPUT)/rmap: LDLIBS += -lnuma\n \n-local_config.mk local_config.h: check_config.sh\n+local_config.mk local_config.h_gen: check_config.sh\n \tCC=\"$(CC)\" CFLAGS=\"$(CFLAGS)\" ./check_config.sh\n \n-EXTRA_CLEAN += local_config.mk local_config.h\n+EXTRA_CLEAN += local_config.mk local_config.h_gen\n \n ifeq ($(IOURING_EXTRA_LIBS),)\n all: warn_missing_liburing\ndiff --git a/tools/testing/selftests/mm/check_config.sh b/tools/testing/selftests/mm/check_config.sh\nindex b84c82bbf8752..b46bf2d2e7f8e 100755\n--- a/tools/testing/selftests/mm/check_config.sh\n+++ b/tools/testing/selftests/mm/check_config.sh\n@@ -4,7 +4,7 @@\n # Probe for libraries and create header files to record the results. Both C\n # header files and Makefile include fragments are created.\n \n-OUTPUT_H_FILE=local_config.h\n+OUTPUT_H_FILE=local_config.h_gen\n OUTPUT_MKFILE=local_config.mk\n \n tmpname=$(mktemp)\ndiff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c\nindex d9c69c04b67d8..87710c5a2d3c9 100644\n--- a/tools/testing/selftests/mm/cow.c\n+++ b/tools/testing/selftests/mm/cow.c\n@@ -21,7 +21,7 @@\n #include \u003csys/wait.h\u003e\n #include \u003clinux/memfd.h\u003e\n \n-#include \"local_config.h\"\n+#include \"local_config.h_gen\"\n #ifdef LOCAL_CONFIG_HAVE_LIBURING\n #include \u003cliburing.h\u003e\n #endif /* LOCAL_CONFIG_HAVE_LIBURING */\ndiff --git a/tools/testing/selftests/mm/gup_longterm.c b/tools/testing/selftests/mm/gup_longterm.c\nindex f61150d28eb2e..00ea0dd2f6550 100644\n--- a/tools/testing/selftests/mm/gup_longterm.c\n+++ b/tools/testing/selftests/mm/gup_longterm.c\n@@ -21,7 +21,7 @@\n #include \u003clinux/magic.h\u003e\n #include \u003clinux/memfd.h\u003e\n \n-#include \"local_config.h\"\n+#include \"local_config.h_gen\"\n #ifdef LOCAL_CONFIG_HAVE_LIBURING\n #include \u003cliburing.h\u003e\n #endif /* LOCAL_CONFIG_HAVE_LIBURING */\n"
}
2/1 2026/08/03 23:26 agent patch-evaluator
0m Model: 
best-expensive

Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftests (tools/testing/selftests/mm/) and does not change any kernel 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).
- 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 ca45af836e007f77b61e18556412386f969aa6a4
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Aug 3 23:26:37 2026 +0000

    syz-cluster: applied patch under review

diff --git a/tools/testing/selftests/mm/.gitignore b/tools/testing/selftests/mm/.gitignore
index 83ad9454dd9d1..fcd892ed21e32 100644
--- a/tools/testing/selftests/mm/.gitignore
+++ b/tools/testing/selftests/mm/.gitignore
@@ -1,63 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0-only
-cow
-hugepage-mmap
-hugepage-mremap
-hugepage-shm
-hugepage-vmemmap
-hugetlb-madvise
-hugetlb-read-hwpoison
-hugetlb-soft-offline
-khugepaged
-map_hugetlb
-map_populate
-thuge-gen
-compaction_test
-memory-failure
-migration
-mlock2-tests
-mrelease_test
-mremap_dontunmap
-mremap_test
-on-fault-limit
-transhuge-stress
-pagemap_ioctl
-pfnmap
-process_madv
-*.tmp*
-protection_keys
-protection_keys_32
-protection_keys_64
-madv_populate
-uffd-stress
-uffd-unit-tests
-uffd-wp-mremap
-mlock-intersect-test
-mlock-random-test
-virtual_address_range
-gup_test
-va_128TBswitch
-map_fixed_noreplace
-write_to_hugetlbfs
-hmm-tests
-memfd_secret
-soft-dirty
-split_huge_page_test
-ksm_tests
-local_config.h
-local_config.mk
-ksm_functional_tests
-mdwe_test
-gup_longterm
-mkdirty
-va_high_addr_switch
-hugetlb_fault_after_madv
-hugetlb_madv_vs_map
-mseal_test
-droppable
-hugetlb_dio
-pkey_sighandler_tests_32
-pkey_sighandler_tests_64
-guard-regions
-merge
-prctl_thp_disable
-rmap
+*
+!/**/
+!*.c
+!*.h
+!*.sh
+!.gitignore
+!Makefile
+!config
+!settings
diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile
index 7a5de4e9bf520..32f4b016b74f0 100644
--- a/tools/testing/selftests/mm/Makefile
+++ b/tools/testing/selftests/mm/Makefile
@@ -5,7 +5,7 @@
 # script so kunit knows to run it, and add it to the list below.
 # If you do not YOUR TESTS WILL NOT RUN IN THE CI.
 
-LOCAL_HDRS += $(selfdir)/mm/local_config.h $(top_srcdir)/mm/gup_test.h
+LOCAL_HDRS += $(selfdir)/mm/local_config.h_gen $(top_srcdir)/mm/gup_test.h
 LOCAL_HDRS += $(selfdir)/mm/mseal_helpers.h
 
 include local_config.mk
@@ -259,10 +259,10 @@ $(OUTPUT)/migration: LDLIBS += -lnuma
 
 $(OUTPUT)/rmap: LDLIBS += -lnuma
 
-local_config.mk local_config.h: check_config.sh
+local_config.mk local_config.h_gen: check_config.sh
 	CC="$(CC)" CFLAGS="$(CFLAGS)" ./check_config.sh
 
-EXTRA_CLEAN += local_config.mk local_config.h
+EXTRA_CLEAN += local_config.mk local_config.h_gen
 
 ifeq ($(IOURING_EXTRA_LIBS),)
 all: warn_missing_liburing
diff --git a/tools/testing/selftests/mm/check_config.sh b/tools/testing/selftests/mm/check_config.sh
index b84c82bbf8752..b46bf2d2e7f8e 100755
--- a/tools/testing/selftests/mm/check_config.sh
+++ b/tools/testing/selftests/mm/check_config.sh
@@ -4,7 +4,7 @@
 # Probe for libraries and create header files to record the results. Both C
 # header files and Makefile include fragments are created.
 
-OUTPUT_H_FILE=local_config.h
+OUTPUT_H_FILE=local_config.h_gen
 OUTPUT_MKFILE=local_config.mk
 
 tmpname=$(mktemp)
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index d9c69c04b67d8..87710c5a2d3c9 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -21,7 +21,7 @@
 #include <sys/wait.h>
 #include <linux/memfd.h>
 
-#include "local_config.h"
+#include "local_config.h_gen"
 #ifdef LOCAL_CONFIG_HAVE_LIBURING
 #include <liburing.h>
 #endif /* LOCAL_CONFIG_HAVE_LIBURING */
diff --git a/tools/testing/selftests/mm/gup_longterm.c b/tools/testing/selftests/mm/gup_longterm.c
index f61150d28eb2e..00ea0dd2f6550 100644
--- a/tools/testing/selftests/mm/gup_longterm.c
+++ b/tools/testing/selftests/mm/gup_longterm.c
@@ -21,7 +21,7 @@
 #include <linux/magic.h>
 #include <linux/memfd.h>
 
-#include "local_config.h"
+#include "local_config.h_gen"
 #ifdef LOCAL_CONFIG_HAVE_LIBURING
 #include <liburing.h>
 #endif /* LOCAL_CONFIG_HAVE_LIBURING */

3/2 2026/08/03 23:26 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 3445
							output: 57
							thoughts: 117

Thoughts: 
**Selftest Update Analysis**

Okay, so I've got this patch affecting the memory management self-tests. The scope is pretty narrow – all the modifications are within `tools/testing/selftests/mm/`. I'm seeing changes to the `.gitignore` file, the `Makefile`, and a few test files themselves: `check_config.sh`, `cow.c`, and `gup_longterm.c`.

The key change I'm picking up on is the renaming of `local_config.h` to `local_config.h_gen`.  I'm also noting the `.gitignore` update for a more general ignoring of certain files. From my understanding, this is likely to prevent issues when regenerating the `.h` file.

Crucially, it appears this patch is *solely* concerned with these selftests. No actual kernel code is being altered. Given that it's isolated to selftests, there's no way this would contribute to fuzzing targets or any security issues. Therefore, my assessment is that `WorthFuzzing` should be set to `false`. These are test infrastructure changes only and do not modify any core kernel functionality.

4/2 2026/08/03 23:26 tool set-results
0m Args: 
{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftests (tools/testing/selftests/mm/) and does not change any kernel code.",
  "WorthFuzzing": false
}

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftests (tools/testing/selftests/mm/) and does not change any kernel code.",
  "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)