AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch consists entirely of spelling/typo fixes within code comments across KVM header and source files, with no changes to executable logic.",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit 7d622fb3632c729e0e8db393d630250972ad6c3d\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Sat Sep 5 22:56:02 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h\nindex 1585ec8040666..79bfd945e5c47 100644\n--- a/arch/x86/include/uapi/asm/kvm.h\n+++ b/arch/x86/include/uapi/asm/kvm.h\n@@ -551,7 +551,7 @@ struct kvm_nested_state {\n \t} hdr;\n \n \t/*\n-\t * Define data region as 0 bytes to preserve backwards-compatability\n+\t * Define data region as 0 bytes to preserve backwards-compatibility\n \t * to old definition of kvm_nested_state in order to avoid changing\n \t * KVM_{GET,PUT}_NESTED_STATE ioctl values.\n \t */\ndiff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c\nindex e1f3cea147659..d48615a1a2751 100644\n--- a/arch/x86/kvm/lapic.c\n+++ b/arch/x86/kvm/lapic.c\n@@ -2699,7 +2699,7 @@ void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset)\n \t * virtual APIC state, but KVM needs to conditionally modify the value\n \t * in certain cases, e.g. to clear the ICR busy bit.  The cost of extra\n \t * conditional branches is likely a wash relative to the cost of the\n-\t * maybe-unecessary write, and both are in the noise anyways.\n+\t * maybe-unnecessary write, and both are in the noise anyways.\n \t */\n \tif (apic_x2apic_mode(apic) \u0026\u0026 offset == APIC_ICR)\n \t\tWARN_ON_ONCE(kvm_x2apic_icr_write(apic, kvm_x2apic_icr_read(apic)));\ndiff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h\nindex 03bfc92864b6e..b9d3ce31a9ab3 100644\n--- a/include/linux/kvm_host.h\n+++ b/include/linux/kvm_host.h\n@@ -101,7 +101,7 @@\n #define KVM_PFN_ERR_NEEDS_IO\t(KVM_PFN_ERR_MASK + 4)\n \n /*\n- * error pfns indicate that the gfn is in slot but faild to\n+ * error pfns indicate that the gfn is in slot but failed to\n  * translate it to pfn on host.\n  */\n static inline bool is_error_pfn(kvm_pfn_t pfn)\n@@ -2461,7 +2461,7 @@ void kvm_arch_update_irqfd_routing(struct kvm_kernel_irqfd *irqfd,\n #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */\n \n #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS\n-/* If we wakeup during the poll time, was it a sucessful poll? */\n+/* If we wakeup during the poll time, was it a successful poll? */\n static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)\n {\n \treturn vcpu-\u003evalid_wakeup;\n"
}

core

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch consists entirely of spelling/typo fixes within code comments across KVM header and source files, with no changes to executable logic.",
  "WorthFuzzing": false
}

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.

Target architecture: amd64

For your convenience, here is the diff of the changes:
commit 7d622fb3632c729e0e8db393d630250972ad6c3d
Author: syz-cluster <triage@syzkaller.com>
Date:   Sat Sep 5 22:56:02 2026 +0000

    syz-cluster: applied patch under review

diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h
index 1585ec8040666..79bfd945e5c47 100644
--- a/arch/x86/include/uapi/asm/kvm.h
+++ b/arch/x86/include/uapi/asm/kvm.h
@@ -551,7 +551,7 @@ struct kvm_nested_state {
 	} hdr;
 
 	/*
-	 * Define data region as 0 bytes to preserve backwards-compatability
+	 * Define data region as 0 bytes to preserve backwards-compatibility
 	 * to old definition of kvm_nested_state in order to avoid changing
 	 * KVM_{GET,PUT}_NESTED_STATE ioctl values.
 	 */
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index e1f3cea147659..d48615a1a2751 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2699,7 +2699,7 @@ void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset)
 	 * virtual APIC state, but KVM needs to conditionally modify the value
 	 * in certain cases, e.g. to clear the ICR busy bit.  The cost of extra
 	 * conditional branches is likely a wash relative to the cost of the
-	 * maybe-unecessary write, and both are in the noise anyways.
+	 * maybe-unnecessary write, and both are in the noise anyways.
 	 */
 	if (apic_x2apic_mode(apic) && offset == APIC_ICR)
 		WARN_ON_ONCE(kvm_x2apic_icr_write(apic, kvm_x2apic_icr_read(apic)));
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 03bfc92864b6e..b9d3ce31a9ab3 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -101,7 +101,7 @@
 #define KVM_PFN_ERR_NEEDS_IO	(KVM_PFN_ERR_MASK + 4)
 
 /*
- * error pfns indicate that the gfn is in slot but faild to
+ * error pfns indicate that the gfn is in slot but failed to
  * translate it to pfn on host.
  */
 static inline bool is_error_pfn(kvm_pfn_t pfn)
@@ -2461,7 +2461,7 @@ void kvm_arch_update_irqfd_routing(struct kvm_kernel_irqfd *irqfd,
 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
 
 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
-/* If we wakeup during the poll time, was it a sucessful poll? */
+/* If we wakeup during the poll time, was it a successful poll? */
 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
 {
 	return vcpu->valid_wakeup;

gemini-3.7-flash

null

null

							input: 3566
							output: 59
							thoughts: 530
						

**Triage Assessment: WorthFuzzing = False**

Okay, let's take a look at this patch. My initial scan of the diff reveals a pattern. It touches a few files: `arch/x86/include/uapi/asm/kvm.h`, `arch/x86/kvm/lapic.c`, and `include/linux/kvm_host.h`. The changes are all quite obvious—spelling corrections in comments. We're talking about things like "compatability" to "compatibility," "unecessary" to "unnecessary," and "faild" to "failed," "sucessful" to "successful". Nothing substantive here.

Now, let's apply the triage rules. Rule 2 is the one we're interested in. Specifically, we should return `WorthFuzzing=false` if *all* the modified code falls into certain categories, one of which is modifications to documentation, comments, or spelling fixes. This patch is a perfect fit.

The analysis is clear: `WorthFuzzing=false`. The `FocusSymbols` and `EnableConfigs` lists will be empty. The reasoning? The patch contains only typo/spelling corrections in comments and doesn't touch any executable kernel code.

Just to be absolutely certain, I'm going to quickly re-examine the diff.

*   `arch/x86/include/uapi/asm/kvm.h`: A comment fix from "backwards-compatability" to "backwards-compatibility".
*   `arch/x86/kvm/lapic.c`: A comment fix from "maybe-unecessary" to "maybe-unnecessary".
*   `include/linux/kvm_host.h`: Fixing "faild" to "failed" and "sucessful" to "successful". Again, just comments.

Yup, it's all comment typo fixes.

Alright, time to call `set-results`.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch consists entirely of spelling/typo fixes within code comments across KVM header and source files, with no changes to executable logic.",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch consists entirely of spelling/typo fixes within code comments across KVM header and source files, with no changes to executable logic.",
  "WorthFuzzing": false
}

{
  "WorthFuzzing": false
}

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