| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/09/23 21:12 | flow | patch-triage |
0mArgs:null Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"KMSANReasoning": "",
"NeedsKMSAN": false,
"Reasoning": "The patch only introduces a new test script (tests/nvme/071) and its expected output file (tests/nvme/071.out) for blktests. No kernel source code, drivers, or modules are modified.",
"WorthFuzzing": false
} |
| 1/1 | 2026/09/23 21:12 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit 6bc458eb40550face5ce61b6f9d007f62d2cc2e0\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Sep 23 21:12:43 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/tests/nvme/071 b/tests/nvme/071\nnew file mode 100755\nindex 0000000000000..d7004167a789c\n--- /dev/null\n+++ b/tests/nvme/071\n@@ -0,0 +1,184 @@\n+#!/bin/bash\n+# SPDX-License-Identifier: GPL-3.0+\n+# Copyright (C) 2026 Mohamed Khalfella\n+\n+. tests/nvme/rc\n+. common/ublk\n+\n+DESCRIPTION=\"CCR/CQT functional test\"\n+\n+requires() {\n+\t_nvme_requires\n+\t_have_loop\n+\t_have_ublk\n+\t_have_module_param_value nvme_core multipath Y\n+\t_require_nvme_trtype tcp rdma fc\n+\t_have_src_program nvme-ghost-write-detector\n+}\n+\n+set_conditions() {\n+\t_set_nvme_trtype \"$@\"\n+}\n+\n+count_paths_to_subsystem() {\n+\tlocal subsysnqn=\"$1\"\n+\tlocal dev count\n+\n+\tcount=0\n+\tfor dev in /sys/class/nvme/nvme*; do\n+\t\t[[ -e \"${dev}/subsysnqn\" ]] || continue\n+\t\t[[ \"$(cat \"${dev}/subsysnqn\")\" == \"${subsysnqn}\" ]] || continue\n+\t\tcount=$(( count + 1 ))\n+\tdone\n+\techo \"${count}\"\n+}\n+\n+set_io_timeout_of_subsystem() {\n+\tlocal subsysnqn=\"$1\"\n+\tlocal timeout=\"$2\"\n+\tlocal dev\n+\n+\tfor dev in /sys/class/nvme/nvme*; do\n+\t\t[[ -e \"${dev}/subsysnqn\" ]] || continue\n+\t\t[[ \"$(cat \"${dev}/subsysnqn\")\" == \"${subsysnqn}\" ]] || continue\n+\t\tif ! echo \"${timeout}\" \u003e \"${dev}/io_timeout\" 2\u003e /dev/null; then\n+\t\t\techo \"FAIL: can not set io_timeout on ${dev##*/}\"\n+\t\t\treturn 1\n+\t\tfi\n+\tdone\n+}\n+\n+dmesg_mark() {\n+\tlocal marker=\"blktests ${TEST_NAME} $1\"\n+\n+\techo \"${marker}\" \u003e\u003e /dev/kmsg\n+\techo \"${marker}\"\n+}\n+\n+dmesg_since_mark() {\n+\tdmesg | awk -v m=\"$1\" 'index($0, m) { found = 1; next } found'\n+}\n+\n+wait_for_dmesg_after_mark() {\n+\tlocal mark=\"$1\"\n+\tlocal pattern=\"$2\"\n+\tlocal timeout=\"$3\"\n+\tlocal i\n+\n+\tfor ((i = 0; i \u003c timeout * 2; i++)); do\n+\t\tif dmesg_since_mark \"${mark}\" | grep -q -e \"${pattern}\"; then\n+\t\t\treturn 0\n+\t\tfi\n+\t\tsleep 0.5\n+\tdone\n+\treturn 1\n+}\n+\n+test_injecting_delay_ccr_recovery() {\n+\tlocal mark ns\n+\n+\tmark=$(dmesg_mark \"ccr_recovery_started\")\n+\n+\tif ! ${UBLK_PROG} inject -n 0 -o write -d 4 -c 1 \u003e\u003e \"$FULL\" 2\u003e\u00261; then\n+\t\techo \"FAIL: can not inject write delay\"\n+\tfi\n+\n+\tns=$(_find_nvme_ns \"${def_subsys_uuid}\")\n+\t\"$SRCDIR/nvme-ghost-write-detector\" \"/dev/${ns}\"\n+\n+\t# The injected delay is within the limits that CCR can handle.\n+\t# Expect fencing to start and CCR to succeed.\n+\tif ! wait_for_dmesg_after_mark \"${mark}\" \"starting controller fencing\" 30; then\n+\t\techo \"FAIL: controller fencing did not start\"\n+\tfi\n+\n+\tif ! wait_for_dmesg_after_mark \"${mark}\" \"CCR succeeded using nvme\" 30; then\n+\t\techo \"FAIL: cross controller reset did not succeed\"\n+\tfi\n+}\n+\n+test_injecting_delay_cqt_recovery() {\n+\tlocal mark ns\n+\n+\tmark=$(dmesg_mark \"cqt_recovery_started\")\n+\n+\tif ! ${UBLK_PROG} inject -n 0 -o write -d 10 -c 1 \u003e\u003e \"$FULL\" 2\u003e\u00261; then\n+\t\techo \"FAIL: can not inject write delay\"\n+\tfi\n+\n+\tns=$(_find_nvme_ns \"${def_subsys_uuid}\")\n+\t\"$SRCDIR/nvme-ghost-write-detector\" \"/dev/${ns}\"\n+\n+\t# The injected delay is outside the limit that CCR can handle.\n+\t# Expect CCR to fail and CQT to save the day.\n+\tif ! wait_for_dmesg_after_mark \"${mark}\" \"starting controller fencing\" 30; then\n+\t\techo \"FAIL: controller fencing did not start\"\n+\tfi\n+\n+\tif ! wait_for_dmesg_after_mark \"${mark}\" \"attempting CCR\" 30; then\n+\t\techo \"FAIL: cross controller reset was not attempted\"\n+\tfi\n+\n+\tif ! wait_for_dmesg_after_mark \"${mark}\" \"CCR failed, switch to time-based recovery\" 30; then\n+\t\techo \"FAIL: cross controller did not fail as expected\"\n+\tfi\n+\n+\tif ! wait_for_dmesg_after_mark \"${mark}\" \"Time-based recovery finished\" 30; then\n+\t\techo \"FAIL: expected to see time-based recovery ends\"\n+\tfi\n+}\n+\n+test() {\n+\techo \"Running ${TEST_NAME}\"\n+\n+\tlocal port nr_paths\n+\tlocal attr_cqt\n+\tlocal -a ports\n+\n+\tif ! _init_ublk; then\n+\t\treturn 1\n+\tfi\n+\n+\ttruncate -s \"${NVME_IMG_SIZE}\" \"${TMPDIR}/ublk-img\"\n+\tif ! ${UBLK_PROG} add -t loop -f \"${TMPDIR}/ublk-img\" -n 0 \u003e \"$FULL\" 2\u003e\u00261; then\n+\t\techo \"fail to add ublk device\"\n+\t\t_exit_ublk\n+\t\treturn 1\n+\tfi\n+\tudevadm settle\n+\n+\t_setup_nvmet\n+\t_nvmet_target_setup --ports 2 --blkdev none\n+\t_create_nvmet_ns --blkdev /dev/ublkb0 \\\n+\t\t--uuid \"${def_subsys_uuid}\" \u003e /dev/null\n+\n+\t# CQT is disabled by default, enable it for 30s\n+\tattr_cqt=\"${NVMET_CFS}/subsystems/${def_subsysnqn}/attr_cqt\"\n+\tif [[ -f \"${attr_cqt}\" ]]; then\n+\t\techo 30000 \u003e \"${attr_cqt}\"\n+\telse\n+\t\techo \"FAIL: failed to find attr_cqt: ${attr_cqt}\"\n+\tfi\n+\n+\t_get_nvmet_ports \"${def_subsysnqn}\" ports\n+\techo \"Target ports: ${#ports[@]}\"\n+\tfor port in \"${ports[@]}\"; do\n+\t\t_nvme_connect_subsys --port \"${port}\"\n+\tdone\n+\n+\tnr_paths=$(count_paths_to_subsystem \"${def_subsysnqn}\")\n+\tif (( nr_paths != 2 )); then\n+\t\techo \"FAIL: expected 2 paths, found ${nr_paths}\"\n+\tfi\n+\n+\tset_io_timeout_of_subsystem \"${def_subsysnqn}\" 2000\n+\n+\ttest_injecting_delay_ccr_recovery\n+\n+\ttest_injecting_delay_cqt_recovery\n+\n+\t_nvme_disconnect_subsys\n+\t_nvmet_target_cleanup\n+\t_exit_ublk\n+\techo \"Test complete\"\n+}\ndiff --git a/tests/nvme/071.out b/tests/nvme/071.out\nnew file mode 100644\nindex 0000000000000..f55eefb4b5459\n--- /dev/null\n+++ b/tests/nvme/071.out\n@@ -0,0 +1,67 @@\n+Running nvme/071\n+Target ports: 2\n+starting nvme-ghost-write-detector test program\n+iteration number 0, writing data\n+validating written data\n+successfully validated\n+iteration number 1, writing data\n+validating written data\n+successfully validated\n+iteration number 2, writing data\n+validating written data\n+successfully validated\n+iteration number 3, writing data\n+validating written data\n+successfully validated\n+iteration number 4, writing data\n+validating written data\n+successfully validated\n+iteration number 5, writing data\n+validating written data\n+successfully validated\n+iteration number 6, writing data\n+validating written data\n+successfully validated\n+iteration number 7, writing data\n+validating written data\n+successfully validated\n+iteration number 8, writing data\n+validating written data\n+successfully validated\n+iteration number 9, writing data\n+validating written data\n+successfully validated\n+finished nvme-ghost-write-detector test program\n+starting nvme-ghost-write-detector test program\n+iteration number 0, writing data\n+validating written data\n+successfully validated\n+iteration number 1, writing data\n+validating written data\n+successfully validated\n+iteration number 2, writing data\n+validating written data\n+successfully validated\n+iteration number 3, writing data\n+validating written data\n+successfully validated\n+iteration number 4, writing data\n+validating written data\n+successfully validated\n+iteration number 5, writing data\n+validating written data\n+successfully validated\n+iteration number 6, writing data\n+validating written data\n+successfully validated\n+iteration number 7, writing data\n+validating written data\n+successfully validated\n+iteration number 8, writing data\n+validating written data\n+successfully validated\n+iteration number 9, writing data\n+validating written data\n+successfully validated\n+finished nvme-ghost-write-detector test program\n+Test complete\n"
} |
| 2/1 | 2026/09/23 21:12 | agent | patch-evaluator |
0mModel:core Args: null Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch only introduces a new test script (tests/nvme/071) and its expected output file (tests/nvme/071.out) for blktests. No kernel source code, drivers, or modules are modified.",
"WorthFuzzing": false
}Instruction: You are an expert Linux kernel maintainer and security engineer.
Your job is to review a provided patch series and evaluate whether it warrants fuzzing with syzkaller.
IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on internal assumptions. You must actively use your code access
tools to inspect the actual source code, callers, and surrounding context.
================================================================================
1. CORE TRIAGE PHILOSOPHY
================================================================================
The goal of patch fuzzing is to discover crashes, regressions, exposed latent bugs,
and newly triggered assertions introduced by the patch series.
- REACHABILITY IS THE PRIMARY GATE:
Fuzzing can only discover bugs in code that can actually execute in standard virtualized
environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap).
If the modified code is structurally unreachable (see Section 2), it MUST NOT be fuzzed,
regardless of whether it adds assertions or complex logic.
- DO NOT BLINDLY TRUST "NO FUNCTIONAL CHANGE" (NFCI) OR "REFACTORING" CLAIMS:
Patch authors routinely label changes as "cleanups", "refactorings", or state
"No functional change intended". Do NOT take these claims at face value.
Code refactorings that rearrange logic, introduce helper functions, or alter state management
in core subsystems frequently introduce subtle semantic shifts or uncover latent kernel bugs.
If reachable executable code is modified or refactored, it MUST be fuzzed.
- NEW OR MODIFIED ASSERTIONS IN REACHABLE CODE MUST BE FUZZED:
When a patch introduces or modifies runtime checks or assertions (e.g., WARN_ON*, VM_WARN_ON*,
BUG_ON*, lockdep_assert*) in reachable code paths, it enforces new or stricter invariants.
Even if the author believes the invariant always holds, fuzzing is essential to verify whether
an unusual sequence of operations can violate it.
================================================================================
2. WHEN TO RETURN WorthFuzzing=false (NEGATIVE CRITERIA)
================================================================================
Return WorthFuzzing=false ONLY IF all modified code falls strictly into one or more of these categories:
- Non-kernel and non-executable changes:
* Modifications to Documentation/, comments, or spelling fixes.
* User-space directories, self-tests, samples, or scripts (e.g., tools/, samples/, scripts/, usr/)
that do not affect the compiled kernel image (vmlinux) or kernel modules.
* Purely decorative logging (e.g., message strings in pr_err, printk, dev_info) or tracepoints
that do not alter control flow or data structures.
* Build system or Kconfig changes that do not alter compiled C logic.
- Structurally unreachable hardware:
* Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed,
ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU.
- Unreachable execution paths:
* Driver teardown callbacks (.remove, .shutdown, pci_unregister_driver) executed only during
physical PCI hot-unplug or manual sysfs driver unbinding.
* Code paths exclusive to architectures other than the target architecture.
================================================================================
3. WHEN TO RETURN WorthFuzzing=true (POSITIVE CRITERIA)
================================================================================
Return WorthFuzzing=true whenever the patch touches reachable executable code, including:
- Core Subsystems:
* Any logic modifications in memory management (mm/), synchronization/locking (kernel/locking/),
BPF, scheduler, core networking, VFS, or syscall handling.
- Refactorings and Code Cleanups:
* Any restructuring of reachable data structures, helper abstractions, or algorithm flows.
- Runtime Assertions and Defensive Checks:
* Any introduction or alteration of assertions (WARN_ON*, VM_WARN_ON*, BUG_ON*, etc.) in reachable paths.
- Reachable Drivers and Protocols:
* Drivers accessible via virtual buses (virtio, USB gadget, loopback, netlink, binder, sockets, etc.).
================================================================================
4. EXTRACTING FocusSymbols (PREVENTING DILUTION)
================================================================================
When WorthFuzzing=true, you must extract specific kernel functions into FocusSymbols to guide the fuzzer:
- AVOID UBIQUITOUS LIFECYCLE HOT-PATHS:
Do NOT list generic, ubiquitous functions called by almost every program in the corpus
(including, but not limited to: general memory allocators and deallocators, page fault
and trap handlers, or core synchronization primitives; this is not an exhaustive list).
Listing ubiquitous functions causes the fuzzer to classify thousands of unrelated tests as "focused",
which severely dilutes fuzzing effort away from the actual changes.
- TARGET SPECIFIC FEATURE LOGIC AND ENTRYPOINTS:
List functions that specifically implement the logic being added or altered, or direct API entrypoints
for the subsystem feature under review.
- HANDLING STATIC INLINE FUNCTIONS IN HEADERS (.h):
Compiler-inlined static functions (such as static inlines in mm/*.h or include/linux/*.h) lack
distinct symbol addresses in vmlinux and cannot be targeted directly by symbol coverage filters.
If the changes are primarily in static inline helpers, identify non-static, feature-specific caller
functions in .c files that exercise them (avoiding ubiquitous lifecycle wrappers).
================================================================================
5. IDENTIFYING EnableConfigs
================================================================================
Identify any specific CONFIG_ options required to properly compile and reach the modified code:
- Inspect Kconfig files and #ifdef guards; do not make assumptions.
- Check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed.
- Strip any '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: Target architecture: amd64
For your convenience, here is the diff of the changes:
commit 6bc458eb40550face5ce61b6f9d007f62d2cc2e0
Author: syz-cluster <triage@syzkaller.com>
Date: Wed Sep 23 21:12:43 2026 +0000
syz-cluster: applied patch under review
diff --git a/tests/nvme/071 b/tests/nvme/071
new file mode 100755
index 0000000000000..d7004167a789c
--- /dev/null
+++ b/tests/nvme/071
@@ -0,0 +1,184 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2026 Mohamed Khalfella
+
+. tests/nvme/rc
+. common/ublk
+
+DESCRIPTION="CCR/CQT functional test"
+
+requires() {
+ _nvme_requires
+ _have_loop
+ _have_ublk
+ _have_module_param_value nvme_core multipath Y
+ _require_nvme_trtype tcp rdma fc
+ _have_src_program nvme-ghost-write-detector
+}
+
+set_conditions() {
+ _set_nvme_trtype "$@"
+}
+
+count_paths_to_subsystem() {
+ local subsysnqn="$1"
+ local dev count
+
+ count=0
+ for dev in /sys/class/nvme/nvme*; do
+ [[ -e "${dev}/subsysnqn" ]] || continue
+ [[ "$(cat "${dev}/subsysnqn")" == "${subsysnqn}" ]] || continue
+ count=$(( count + 1 ))
+ done
+ echo "${count}"
+}
+
+set_io_timeout_of_subsystem() {
+ local subsysnqn="$1"
+ local timeout="$2"
+ local dev
+
+ for dev in /sys/class/nvme/nvme*; do
+ [[ -e "${dev}/subsysnqn" ]] || continue
+ [[ "$(cat "${dev}/subsysnqn")" == "${subsysnqn}" ]] || continue
+ if ! echo "${timeout}" > "${dev}/io_timeout" 2> /dev/null; then
+ echo "FAIL: can not set io_timeout on ${dev##*/}"
+ return 1
+ fi
+ done
+}
+
+dmesg_mark() {
+ local marker="blktests ${TEST_NAME} $1"
+
+ echo "${marker}" >> /dev/kmsg
+ echo "${marker}"
+}
+
+dmesg_since_mark() {
+ dmesg | awk -v m="$1" 'index($0, m) { found = 1; next } found'
+}
+
+wait_for_dmesg_after_mark() {
+ local mark="$1"
+ local pattern="$2"
+ local timeout="$3"
+ local i
+
+ for ((i = 0; i < timeout * 2; i++)); do
+ if dmesg_since_mark "${mark}" | grep -q -e "${pattern}"; then
+ return 0
+ fi
+ sleep 0.5
+ done
+ return 1
+}
+
+test_injecting_delay_ccr_recovery() {
+ local mark ns
+
+ mark=$(dmesg_mark "ccr_recovery_started")
+
+ if ! ${UBLK_PROG} inject -n 0 -o write -d 4 -c 1 >> "$FULL" 2>&1; then
+ echo "FAIL: can not inject write delay"
+ fi
+
+ ns=$(_find_nvme_ns "${def_subsys_uuid}")
+ "$SRCDIR/nvme-ghost-write-detector" "/dev/${ns}"
+
+ # The injected delay is within the limits that CCR can handle.
+ # Expect fencing to start and CCR to succeed.
+ if ! wait_for_dmesg_after_mark "${mark}" "starting controller fencing" 30; then
+ echo "FAIL: controller fencing did not start"
+ fi
+
+ if ! wait_for_dmesg_after_mark "${mark}" "CCR succeeded using nvme" 30; then
+ echo "FAIL: cross controller reset did not succeed"
+ fi
+}
+
+test_injecting_delay_cqt_recovery() {
+ local mark ns
+
+ mark=$(dmesg_mark "cqt_recovery_started")
+
+ if ! ${UBLK_PROG} inject -n 0 -o write -d 10 -c 1 >> "$FULL" 2>&1; then
+ echo "FAIL: can not inject write delay"
+ fi
+
+ ns=$(_find_nvme_ns "${def_subsys_uuid}")
+ "$SRCDIR/nvme-ghost-write-detector" "/dev/${ns}"
+
+ # The injected delay is outside the limit that CCR can handle.
+ # Expect CCR to fail and CQT to save the day.
+ if ! wait_for_dmesg_after_mark "${mark}" "starting controller fencing" 30; then
+ echo "FAIL: controller fencing did not start"
+ fi
+
+ if ! wait_for_dmesg_after_mark "${mark}" "attempting CCR" 30; then
+ echo "FAIL: cross controller reset was not attempted"
+ fi
+
+ if ! wait_for_dmesg_after_mark "${mark}" "CCR failed, switch to time-based recovery" 30; then
+ echo "FAIL: cross controller did not fail as expected"
+ fi
+
+ if ! wait_for_dmesg_after_mark "${mark}" "Time-based recovery finished" 30; then
+ echo "FAIL: expected to see time-based recovery ends"
+ fi
+}
+
+test() {
+ echo "Running ${TEST_NAME}"
+
+ local port nr_paths
+ local attr_cqt
+ local -a ports
+
+ if ! _init_ublk; then
+ return 1
+ fi
+
+ truncate -s "${NVME_IMG_SIZE}" "${TMPDIR}/ublk-img"
+ if ! ${UBLK_PROG} add -t loop -f "${TMPDIR}/ublk-img" -n 0 > "$FULL" 2>&1; then
+ echo "fail to add ublk device"
+ _exit_ublk
+ return 1
+ fi
+ udevadm settle
+
+ _setup_nvmet
+ _nvmet_target_setup --ports 2 --blkdev none
+ _create_nvmet_ns --blkdev /dev/ublkb0 \
+ --uuid "${def_subsys_uuid}" > /dev/null
+
+ # CQT is disabled by default, enable it for 30s
+ attr_cqt="${NVMET_CFS}/subsystems/${def_subsysnqn}/attr_cqt"
+ if [[ -f "${attr_cqt}" ]]; then
+ echo 30000 > "${attr_cqt}"
+ else
+ echo "FAIL: failed to find attr_cqt: ${attr_cqt}"
+ fi
+
+ _get_nvmet_ports "${def_subsysnqn}" ports
+ echo "Target ports: ${#ports[@]}"
+ for port in "${ports[@]}"; do
+ _nvme_connect_subsys --port "${port}"
+ done
+
+ nr_paths=$(count_paths_to_subsystem "${def_subsysnqn}")
+ if (( nr_paths != 2 )); then
+ echo "FAIL: expected 2 paths, found ${nr_paths}"
+ fi
+
+ set_io_timeout_of_subsystem "${def_subsysnqn}" 2000
+
+ test_injecting_delay_ccr_recovery
+
+ test_injecting_delay_cqt_recovery
+
+ _nvme_disconnect_subsys
+ _nvmet_target_cleanup
+ _exit_ublk
+ echo "Test complete"
+}
diff --git a/tests/nvme/071.out b/tests/nvme/071.out
new file mode 100644
index 0000000000000..f55eefb4b5459
--- /dev/null
+++ b/tests/nvme/071.out
@@ -0,0 +1,67 @@
+Running nvme/071
+Target ports: 2
+starting nvme-ghost-write-detector test program
+iteration number 0, writing data
+validating written data
+successfully validated
+iteration number 1, writing data
+validating written data
+successfully validated
+iteration number 2, writing data
+validating written data
+successfully validated
+iteration number 3, writing data
+validating written data
+successfully validated
+iteration number 4, writing data
+validating written data
+successfully validated
+iteration number 5, writing data
+validating written data
+successfully validated
+iteration number 6, writing data
+validating written data
+successfully validated
+iteration number 7, writing data
+validating written data
+successfully validated
+iteration number 8, writing data
+validating written data
+successfully validated
+iteration number 9, writing data
+validating written data
+successfully validated
+finished nvme-ghost-write-detector test program
+starting nvme-ghost-write-detector test program
+iteration number 0, writing data
+validating written data
+successfully validated
+iteration number 1, writing data
+validating written data
+successfully validated
+iteration number 2, writing data
+validating written data
+successfully validated
+iteration number 3, writing data
+validating written data
+successfully validated
+iteration number 4, writing data
+validating written data
+successfully validated
+iteration number 5, writing data
+validating written data
+successfully validated
+iteration number 6, writing data
+validating written data
+successfully validated
+iteration number 7, writing data
+validating written data
+successfully validated
+iteration number 8, writing data
+validating written data
+successfully validated
+iteration number 9, writing data
+validating written data
+successfully validated
+finished nvme-ghost-write-detector test program
+Test complete
|
| 3/2 | 2026/09/23 21:12 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 5217 output: 18 thoughts: 134 Thoughts: Here's my thought process on this patch commit: **Analyzing a Potential NVMe Patch** Okay, a patch commit has come across my desk, and my initial reaction is to dive in. It looks like it introduces a new file, `tests/nvme/071` and its associated output file. My immediate concern is contextual. Where does this fit in? Is this a kernel NVMe test, or is this related to a userspace test suite like blktests? I can't be sure without more information. Therefore, I need more context to understand the scope and purpose of this change. To quickly get a better grasp of the surrounding code and project structure, I'll leverage my standard workflow to get a broader view. I'll need to know where I am in the code and what tools I should use to understand the context. I'm going to run `codesearch-dir-index` or similar tool (or use a similar method depending on which I have to hand), to index and explore the `tests/nvme/` directory and understand the architecture, so I can see what other files are there, and what this test might interact with. Then I can determine how this patch fits in with the bigger picture of the test infrastructure, and whether it's related to the kernel, a userspace utility, or something else entirely. Only with that information can I make a proper judgment about the code change. |
| 4/2 | 2026/09/23 21:12 | tool | codesearch-dir-index |
0mArgs:{
"Dir": ""
}Results: {
"Files": null,
"Subdirs": [
"Documentation",
"LICENSES",
"arch",
"block",
"certs",
"crypto",
"drivers",
"fs",
"include",
"init",
"io_uring",
"ipc",
"kernel",
"lib",
"mm",
"net",
"rust",
"samples",
"scripts",
"security",
"sound",
"tests",
"tools",
"usr",
"virt"
]
} |
| 5/2 | 2026/09/23 21:12 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 5786 output: 19 thoughts: 8 Thoughts: Okay, let's dive into this. Here's how I'd approach summarizing the prompt, keeping in mind my own expert-level perspective: **My Initial Assessment: Navigating the Testing Landscape** Alright, the task is clear. I see the starting point is defined: the directory `tests/`. No problem, I immediately understand the implication. "tests/" is the standard location for…well, tests. Given my experience, I know that checking that directory will give me a wealth of information about the project's testing strategy, coverage, and perhaps even its overall development philosophy. I expect to see a carefully crafted suite of unit, integration, or perhaps even end-to-end tests, depending on the project's scale and goals. I'll be looking for structure, naming conventions, and evidence of test-driven development practices. My mind is already cataloging the types of testing frameworks and tools that are likely in play. Let's see what we've got. The real work begins now. |
| 6/2 | 2026/09/23 21:12 | tool | codesearch-dir-index |
0mArgs:{
"Dir": "tests"
}Results: {
"Files": null,
"Subdirs": [
"nvme"
]
} |
| 7/2 | 2026/09/23 21:12 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 6043 output: 22 thoughts: 47 Thoughts: Okay, here's the summary, rendered as if I'm the one thinking it: **NVMe Test Files: A Quick Check** Hold on a second! I just noticed that `tests/nvme/071` and `tests/nvme/071.out` were added to the directory. This looks like a potentially new NVMe test case, so I should see what this means. Let's quickly take a look at either the `tests/nvme` directory or the general `tests/` directory to get some context on the situation. I need to figure out what's new or changed here so I can see what I need to do next. |
| 8/2 | 2026/09/23 21:12 | tool | codesearch-dir-index |
0mArgs:{
"Dir": "tests/nvme"
}Results: {
"Files": null,
"Subdirs": null
} |
| 9/2 | 2026/09/23 21:12 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 6269 output: 34 thoughts: 137 Thoughts: **Navigating the NVMe Test Directory**
Okay, so I'm trying to find something related to 071, and I think it's in `tests/nvme/071`. First, I need to confirm whether `codesearch-dir-index` is indexing the `tests/nvme` directory. Let me check the files specifically within `tests/nvme/`. Hmm, the `codesearch-dir-index` response came back as an empty object `{}`. That's odd. Is it a nullable array or something similar? I'm wondering if the `Files` field *could* be, for example, `[071, 071.out]`, even though I got an empty object back? The response was definitely `{}`. Perhaps `tests/nvme` only contains flat files and no subdirectories? In that case, I should be able to just use `read-file` directly on `tests/nvme/071`.
|
| 10/2 | 2026/09/23 21:12 | tool | read-file |
0mArgs:{
"File": "tests/nvme/071",
"FirstLine": 1,
"LineCount": 20
}Results: {
"Contents": " 1:\t#!/bin/bash\n 2:\t# SPDX-License-Identifier: GPL-3.0+\n 3:\t# Copyright (C) 2026 Mohamed Khalfella\n 4:\t\n 5:\t. tests/nvme/rc\n 6:\t. common/ublk\n 7:\t\n 8:\tDESCRIPTION=\"CCR/CQT functional test\"\n 9:\t\n 10:\trequires() {\n 11:\t\t_nvme_requires\n 12:\t\t_have_loop\n 13:\t\t_have_ublk\n 14:\t\t_have_module_param_value nvme_core multipath Y\n 15:\t\t_require_nvme_trtype tcp rdma fc\n 16:\t\t_have_src_program nvme-ghost-write-detector\n 17:\t}\n 18:\t\n 19:\tset_conditions() {\n 20:\t\t_set_nvme_trtype \"$@\"\n"
} |
| 11/2 | 2026/09/23 21:12 | llm | patch-evaluator |
0mModel:gemini-3.8-flash Args: null Results: null Tokens: input: 6903 output: 83 thoughts: 893 Thoughts: **Analyzing the Patch for Fuzzing Worthiness** Okay, let's break this down. First, I need to check the guidelines, specifically section 2, which outlines the negative criteria for fuzzing. I need to determine if this patch falls into one of those "do not fuzz" categories. I see it's about `tests/nvme/071` and `tests/nvme/071.out`. Ah, these are familiar. `tests/` indicates this is related to the block device tests, part of the blktests suite. That immediately flags them as potential "no-fuzz" candidates because blktests, in general, are user-space tests. Looking at the diff, it confirms my initial hunch. It's just adding these two files, a script and its expected output. No kernel code is touched, no drivers, no compiled image. These are just self-tests. Now to the guidelines. Section 2 confirms my assessment: "User-space directories, self-tests, samples, or scripts...that do not affect the compiled kernel image or kernel modules". Perfect match! This *does not* affect the kernel. I need to be thorough, so I'll check the full commit. I'm imagining using `git diff HEAD~1` but I don't have direct access. So, it's a code search. Based on the "commit" information provided, it confirms that this entire commit only modifies those two test files. No other changes are present. Therefore, this patch is clearly not worth fuzzing. It's a simple addition to a user-space test suite. I can confidently set the fuzzing results to: * `WorthFuzzing: false` * `FocusSymbols: []` * `EnableConfigs: []` * `Reasoning: The patch only adds a test script and expected output to the test suite (blktests). It does not modify any kernel code, drivers, or kernel modules, affecting only user-space test scripts.` All good. Time to move on. Let's call `set-results`. |
| 12/2 | 2026/09/23 21:13 | tool | set-results |
0mArgs:{
"EnableConfigs": [],
"FocusSymbols": [],
"Reasoning": "The patch only introduces a new test script (tests/nvme/071) and its expected output file (tests/nvme/071.out) for blktests. No kernel source code, drivers, or modules are modified.",
"WorthFuzzing": false
}Results: {
"EnableConfigs": null,
"FocusSymbols": [],
"Reasoning": "The patch only introduces a new test script (tests/nvme/071) and its expected output file (tests/nvme/071.out) for blktests. No kernel source code, drivers, or modules are modified.",
"WorthFuzzing": false
} |
| 13/1 | 2026/09/23 21:13 | action | If |
0mArgs:{
"WorthFuzzing": false
}Results: null |
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