AI Trajectory


Trajectory: (Expand/Collapse All)
Seq Timestamp Type Name Duration
0/0 2026/07/02 03:19 flow patch-triage
0m Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftest scripts in tools/testing/selftests/damon/. It fixes typos and minor Python bugs in the test code, but does not make any functional changes to the kernel itself.",
  "WorthFuzzing": false
}
1/1 2026/07/02 03:19 action read-patch-diff
0m Args: 
null

Results: 
{
  "PatchDiff": "commit 83498004b1f86796e9d9653dacd2451585a1ef33\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Thu Jul 2 03:19:00 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py\nindex 8b12cc04844058..f6127081dfb2e8 100644\n--- a/tools/testing/selftests/damon/_damon_sysfs.py\n+++ b/tools/testing/selftests/damon/_damon_sysfs.py\n@@ -624,17 +624,23 @@ class DamonCtx:\n     pause = None\n     idx = None\n \n-    def __init__(self, ops='paddr', monitoring_attrs=DamonAttrs(), targets=[],\n-            schemes=[], pause=False):\n+    def __init__(self, ops='paddr', monitoring_attrs=None, targets=None,\n+            schemes=None, pause=False):\n         self.ops = ops\n+        if monitoring_attrs is None:\n+            monitoring_attrs = DamonAttrs()\n         self.monitoring_attrs = monitoring_attrs\n         self.monitoring_attrs.context = self\n \n+        if targets is None:\n+            targets = []\n         self.targets = targets\n         for idx, target in enumerate(self.targets):\n             target.idx = idx\n             target.context = self\n \n+        if schemes is None:\n+            schemes = []\n         self.schemes = schemes\n         for idx, scheme in enumerate(self.schemes):\n             scheme.idx = idx\n@@ -831,7 +837,7 @@ class Kdamond:\n                 for goal in scheme.quota.goals:\n                     err = goal.stage()\n                     if err is not None:\n-                        print('commit_schemes_quota_goals failed stagign: %s'%\n+                        print('commit_schemes_quota_goals failed staging: %s'%\n                               err)\n                         exit(1)\n         return write_file(os.path.join(self.sysfs_dir(), 'state'),\ndiff --git a/tools/testing/selftests/damon/damos_apply_interval.py b/tools/testing/selftests/damon/damos_apply_interval.py\nindex f04d43702481c5..0f2f36584e48cb 100755\n--- a/tools/testing/selftests/damon/damos_apply_interval.py\n+++ b/tools/testing/selftests/damon/damos_apply_interval.py\n@@ -56,7 +56,7 @@ def main():\n     # Because the second scheme was having the apply interval that is ten times\n     # lower than that of the first scheme, the second scheme should be tried\n     # about ten times more frequently than the first scheme.  For possible\n-    # timing errors, check if it was at least nine times more freuqnetly tried.\n+    # timing errors, check if it was at least nine times more frequently tried.\n     ratio = nr_tried_stats[1] / nr_tried_stats[0]\n     if ratio \u003c 9:\n         print('%d / %d = %f (\u003c 9)' %\ndiff --git a/tools/testing/selftests/damon/damos_quota_goal.py b/tools/testing/selftests/damon/damos_quota_goal.py\nindex f76e0412b564cb..661e4ba4765ae1 100755\n--- a/tools/testing/selftests/damon/damos_quota_goal.py\n+++ b/tools/testing/selftests/damon/damos_quota_goal.py\n@@ -66,7 +66,7 @@ def main():\n             # effective quota was already minimum that cannot be more reduced\n             if expect_increase is False and last_effective_bytes == 1:\n                 continue\n-            print('efective bytes not changed: %d' % goal.effective_bytes)\n+            print('effective bytes not changed: %d' % goal.effective_bytes)\n             exit(1)\n \n         increased = last_effective_bytes \u003c goal.effective_bytes\ndiff --git a/tools/testing/selftests/damon/damos_tried_regions.py b/tools/testing/selftests/damon/damos_tried_regions.py\nindex 3b347eb28bd283..d6472e6a6e082b 100755\n--- a/tools/testing/selftests/damon/damos_tried_regions.py\n+++ b/tools/testing/selftests/damon/damos_tried_regions.py\n@@ -55,10 +55,10 @@ def main():\n     collected_nr_regions.sort()\n     sample = collected_nr_regions[4]\n     print('50-th percentile nr_regions: %d' % sample)\n-    print('expectation (\u003e= 14) is %s' % 'met' if sample \u003e= 14 else 'not met')\n+    print('expectation (\u003e= 14) is %s' % ('met' if sample \u003e= 14 else 'not met'))\n     if collected_nr_regions[4] \u003c 14:\n         print('full nr_regions:')\n-        print('\\n'.join(collected_nr_regions))\n+        print('\\n'.join(['%d' % x for x in collected_nr_regions]))\n         exit(1)\n \n if __name__ == '__main__':\ndiff --git a/tools/testing/selftests/damon/drgn_dump_damon_status.py b/tools/testing/selftests/damon/drgn_dump_damon_status.py\nindex 972948e6215f1d..26b207e44268d6 100755\n--- a/tools/testing/selftests/damon/drgn_dump_damon_status.py\n+++ b/tools/testing/selftests/damon/drgn_dump_damon_status.py\n@@ -163,7 +163,7 @@ def damos_filter_to_dict(damos_filter):\n                                int(damos_filter.addr_range.end)]\n     elif type_ == 'target':\n         dict_['target_idx'] = int(damos_filter.target_idx)\n-    elif type_ == 'hugeapge_size':\n+    elif type_ == 'hugepage_size':\n         dict_['sz_range'] = [int(damos_filter.sz_range.min),\n                              int(damos_filter.sz_range.max)]\n     return dict_\ndiff --git a/tools/testing/selftests/damon/sysfs.py b/tools/testing/selftests/damon/sysfs.py\nindex aa03a1187489f9..99412f0d31f37b 100755\n--- a/tools/testing/selftests/damon/sysfs.py\n+++ b/tools/testing/selftests/damon/sysfs.py\n@@ -119,7 +119,7 @@ def assert_access_pattern_committed(pattern, dump):\n                 'max_nr_accesses', dump)\n     assert_true(dump['min_age_region'] == pattern.age[0], 'min_age_region',\n                 dump)\n-    assert_true(dump['max_age_region'] == pattern.age[1], 'miaxage_region',\n+    assert_true(dump['max_age_region'] == pattern.age[1], 'max_age_region',\n                 dump)\n \n def assert_scheme_committed(scheme, dump):\n@@ -129,7 +129,7 @@ def assert_scheme_committed(scheme, dump):\n             'cold': 1,\n             'pageout': 2,\n             'hugepage': 3,\n-            'nohugeapge': 4,\n+            'nohugepage': 4,\n             'collapse': 5,\n             'lru_prio': 6,\n             'lru_deprio': 7,\ndiff --git a/tools/testing/selftests/damon/sysfs.sh b/tools/testing/selftests/damon/sysfs.sh\nindex 78f4badb5bebb5..2eaaa5ae3c5ed7 100755\n--- a/tools/testing/selftests/damon/sysfs.sh\n+++ b/tools/testing/selftests/damon/sysfs.sh\n@@ -3,7 +3,7 @@\n \n source _common.sh\n \n-# Kselftest frmework requirement - SKIP code is 4.\n+# Kselftest framework requirement - SKIP code is 4.\n ksft_skip=4\n \n ensure_write_succ()\n@@ -28,7 +28,7 @@ ensure_write_fail()\n \n \tif (echo \"$content\" \u003e \"$file\") 2\u003e /dev/null\n \tthen\n-\t\techo \"writing $content to $file succeed ($fail_reason)\"\n+\t\techo \"writing $content to $file succeeded ($reason)\"\n \t\techo \"expected failure because $reason\"\n \t\texit 1\n \tfi\n@@ -363,7 +363,7 @@ test_context()\n {\n \tcontext_dir=$1\n \tensure_dir \"$context_dir\" \"exist\"\n-\tensure_file \"$context_dir/avail_operations\" \"exit\" 400\n+\tensure_file \"$context_dir/avail_operations\" \"exist\" 400\n \tensure_file \"$context_dir/operations\" \"exist\" 600\n \tensure_file \"$context_dir/addr_unit\" \"exist\" 600\n \tensure_file \"$context_dir/pause\" \"exist\" 600\ndiff --git a/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py b/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py\nindex 35c724a63f6cf2..16fdc6e7fc566a 100755\n--- a/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py\n+++ b/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py\n@@ -7,7 +7,7 @@ import time\n import _damon_sysfs\n \n def pass_wss_estimation(sz_region):\n-    # access two regions of given size, 2 seocnds per each region\n+    # access two regions of given size, 2 seconds per each region\n     proc = subprocess.Popen(\n             ['./access_memory', '2', '%d' % sz_region, '2000', 'repeat'])\n     kdamonds = _damon_sysfs.Kdamonds([_damon_sysfs.Kdamond(\n"
}
2/1 2026/07/02 03:19 agent patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftest scripts in tools/testing/selftests/damon/. It fixes typos and minor Python bugs in the test code, but does not make any functional changes to the kernel 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 83498004b1f86796e9d9653dacd2451585a1ef33
Author: syz-cluster <triage@syzkaller.com>
Date:   Thu Jul 2 03:19:00 2026 +0000

    syz-cluster: applied patch under review

diff --git a/tools/testing/selftests/damon/_damon_sysfs.py b/tools/testing/selftests/damon/_damon_sysfs.py
index 8b12cc04844058..f6127081dfb2e8 100644
--- a/tools/testing/selftests/damon/_damon_sysfs.py
+++ b/tools/testing/selftests/damon/_damon_sysfs.py
@@ -624,17 +624,23 @@ class DamonCtx:
     pause = None
     idx = None
 
-    def __init__(self, ops='paddr', monitoring_attrs=DamonAttrs(), targets=[],
-            schemes=[], pause=False):
+    def __init__(self, ops='paddr', monitoring_attrs=None, targets=None,
+            schemes=None, pause=False):
         self.ops = ops
+        if monitoring_attrs is None:
+            monitoring_attrs = DamonAttrs()
         self.monitoring_attrs = monitoring_attrs
         self.monitoring_attrs.context = self
 
+        if targets is None:
+            targets = []
         self.targets = targets
         for idx, target in enumerate(self.targets):
             target.idx = idx
             target.context = self
 
+        if schemes is None:
+            schemes = []
         self.schemes = schemes
         for idx, scheme in enumerate(self.schemes):
             scheme.idx = idx
@@ -831,7 +837,7 @@ class Kdamond:
                 for goal in scheme.quota.goals:
                     err = goal.stage()
                     if err is not None:
-                        print('commit_schemes_quota_goals failed stagign: %s'%
+                        print('commit_schemes_quota_goals failed staging: %s'%
                               err)
                         exit(1)
         return write_file(os.path.join(self.sysfs_dir(), 'state'),
diff --git a/tools/testing/selftests/damon/damos_apply_interval.py b/tools/testing/selftests/damon/damos_apply_interval.py
index f04d43702481c5..0f2f36584e48cb 100755
--- a/tools/testing/selftests/damon/damos_apply_interval.py
+++ b/tools/testing/selftests/damon/damos_apply_interval.py
@@ -56,7 +56,7 @@ def main():
     # Because the second scheme was having the apply interval that is ten times
     # lower than that of the first scheme, the second scheme should be tried
     # about ten times more frequently than the first scheme.  For possible
-    # timing errors, check if it was at least nine times more freuqnetly tried.
+    # timing errors, check if it was at least nine times more frequently tried.
     ratio = nr_tried_stats[1] / nr_tried_stats[0]
     if ratio < 9:
         print('%d / %d = %f (< 9)' %
diff --git a/tools/testing/selftests/damon/damos_quota_goal.py b/tools/testing/selftests/damon/damos_quota_goal.py
index f76e0412b564cb..661e4ba4765ae1 100755
--- a/tools/testing/selftests/damon/damos_quota_goal.py
+++ b/tools/testing/selftests/damon/damos_quota_goal.py
@@ -66,7 +66,7 @@ def main():
             # effective quota was already minimum that cannot be more reduced
             if expect_increase is False and last_effective_bytes == 1:
                 continue
-            print('efective bytes not changed: %d' % goal.effective_bytes)
+            print('effective bytes not changed: %d' % goal.effective_bytes)
             exit(1)
 
         increased = last_effective_bytes < goal.effective_bytes
diff --git a/tools/testing/selftests/damon/damos_tried_regions.py b/tools/testing/selftests/damon/damos_tried_regions.py
index 3b347eb28bd283..d6472e6a6e082b 100755
--- a/tools/testing/selftests/damon/damos_tried_regions.py
+++ b/tools/testing/selftests/damon/damos_tried_regions.py
@@ -55,10 +55,10 @@ def main():
     collected_nr_regions.sort()
     sample = collected_nr_regions[4]
     print('50-th percentile nr_regions: %d' % sample)
-    print('expectation (>= 14) is %s' % 'met' if sample >= 14 else 'not met')
+    print('expectation (>= 14) is %s' % ('met' if sample >= 14 else 'not met'))
     if collected_nr_regions[4] < 14:
         print('full nr_regions:')
-        print('\n'.join(collected_nr_regions))
+        print('\n'.join(['%d' % x for x in collected_nr_regions]))
         exit(1)
 
 if __name__ == '__main__':
diff --git a/tools/testing/selftests/damon/drgn_dump_damon_status.py b/tools/testing/selftests/damon/drgn_dump_damon_status.py
index 972948e6215f1d..26b207e44268d6 100755
--- a/tools/testing/selftests/damon/drgn_dump_damon_status.py
+++ b/tools/testing/selftests/damon/drgn_dump_damon_status.py
@@ -163,7 +163,7 @@ def damos_filter_to_dict(damos_filter):
                                int(damos_filter.addr_range.end)]
     elif type_ == 'target':
         dict_['target_idx'] = int(damos_filter.target_idx)
-    elif type_ == 'hugeapge_size':
+    elif type_ == 'hugepage_size':
         dict_['sz_range'] = [int(damos_filter.sz_range.min),
                              int(damos_filter.sz_range.max)]
     return dict_
diff --git a/tools/testing/selftests/damon/sysfs.py b/tools/testing/selftests/damon/sysfs.py
index aa03a1187489f9..99412f0d31f37b 100755
--- a/tools/testing/selftests/damon/sysfs.py
+++ b/tools/testing/selftests/damon/sysfs.py
@@ -119,7 +119,7 @@ def assert_access_pattern_committed(pattern, dump):
                 'max_nr_accesses', dump)
     assert_true(dump['min_age_region'] == pattern.age[0], 'min_age_region',
                 dump)
-    assert_true(dump['max_age_region'] == pattern.age[1], 'miaxage_region',
+    assert_true(dump['max_age_region'] == pattern.age[1], 'max_age_region',
                 dump)
 
 def assert_scheme_committed(scheme, dump):
@@ -129,7 +129,7 @@ def assert_scheme_committed(scheme, dump):
             'cold': 1,
             'pageout': 2,
             'hugepage': 3,
-            'nohugeapge': 4,
+            'nohugepage': 4,
             'collapse': 5,
             'lru_prio': 6,
             'lru_deprio': 7,
diff --git a/tools/testing/selftests/damon/sysfs.sh b/tools/testing/selftests/damon/sysfs.sh
index 78f4badb5bebb5..2eaaa5ae3c5ed7 100755
--- a/tools/testing/selftests/damon/sysfs.sh
+++ b/tools/testing/selftests/damon/sysfs.sh
@@ -3,7 +3,7 @@
 
 source _common.sh
 
-# Kselftest frmework requirement - SKIP code is 4.
+# Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 
 ensure_write_succ()
@@ -28,7 +28,7 @@ ensure_write_fail()
 
 	if (echo "$content" > "$file") 2> /dev/null
 	then
-		echo "writing $content to $file succeed ($fail_reason)"
+		echo "writing $content to $file succeeded ($reason)"
 		echo "expected failure because $reason"
 		exit 1
 	fi
@@ -363,7 +363,7 @@ test_context()
 {
 	context_dir=$1
 	ensure_dir "$context_dir" "exist"
-	ensure_file "$context_dir/avail_operations" "exit" 400
+	ensure_file "$context_dir/avail_operations" "exist" 400
 	ensure_file "$context_dir/operations" "exist" 600
 	ensure_file "$context_dir/addr_unit" "exist" 600
 	ensure_file "$context_dir/pause" "exist" 600
diff --git a/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py b/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py
index 35c724a63f6cf2..16fdc6e7fc566a 100755
--- a/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py
+++ b/tools/testing/selftests/damon/sysfs_update_schemes_tried_regions_wss_estimation.py
@@ -7,7 +7,7 @@ import time
 import _damon_sysfs
 
 def pass_wss_estimation(sz_region):
-    # access two regions of given size, 2 seocnds per each region
+    # access two regions of given size, 2 seconds per each region
     proc = subprocess.Popen(
             ['./access_memory', '2', '%d' % sz_region, '2000', 'repeat'])
     kdamonds = _damon_sysfs.Kdamonds([_damon_sysfs.Kdamond(

3/2 2026/07/02 03:19 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 4342
							output: 74
							thoughts: 542

Thoughts: 
**Patch Analysis: DAMON Selftest Fixes**

Okay, so I've taken a look at this patch. It's focused on the `tools/testing/selftests/damon/` directory, which indicates we're dealing with selftests specifically for DAMON (Data Access Monitor). My initial read reveals a series of typo corrections across various Python and Bash scripts. I'm seeing fixes like `stagign` to `staging`, `freuqnetly` to `frequently`, and a whole host of other similar issues. Nothing earth-shattering, just cleaning up the code a bit.

There are also a couple of minor Python fixes that are worth noting. It looks like the patch is addressing the issue of mutable default arguments in a few places by initializing variables within the function. Another change involves a formatting issue with printing a list of numbers; a list comprehension has been introduced to ensure correct output.

Crucially, though, and this is the main thing I need to confirm, *none* of these changes appear to touch the actual kernel code. They're all contained within the selftest infrastructure. It's all very contained, purely test related.

Let's double-check by reviewing the list of files touched: `_damon_sysfs.py`, `damos_apply_interval.py`, `damos_quota_goal.py`, `damos_tried_regions.py`, `drgn_dump_damon_status.py`, `sysfs.py`, `sysfs.sh`, and `sysfs_update_schemes_tried_regions_wss_estimation.py`. All of these files reside within the `tools/testing/selftests/damon/` directory.

Yup, confirmed. No kernel code modifications. This patch is solely concerned with improving and correcting the self-tests. Therefore, since there are no functional kernel changes to fuzz, I'm going to call `set-results` with `WorthFuzzing=false`.

4/2 2026/07/02 03:19 tool set-results
0m Args: 
{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftest scripts in tools/testing/selftests/damon/. It fixes typos and minor Python bugs in the test code, but does not make any functional changes to the kernel itself.",
  "WorthFuzzing": false
}

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch only modifies selftest scripts in tools/testing/selftests/damon/. It fixes typos and minor Python bugs in the test code, but does not make any functional changes to the kernel 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)