Syzbot CI

Subject	guest_memfd: In-place conversion support
Author	ackerleytng@google.com
Date	2026-02-02 22:29:39 +0000 UTC
Version
Cc	ackerleytng@google.com aik@amd.com andrew.jones@linux.dev binbin.wu@linux.intel.com bp@alien8.de brauner@kernel.org chao.p.peng@intel.com chao.p.peng@linux.intel.com chenhuacai@kernel.org corbet@lwn.net dave.hansen@linux.intel.com david@kernel.org hpa@zytor.com ira.weiny@intel.com jgg@nvidia.com jmattson@google.com jroedel@suse.de jthoughton@google.com kvm@vger.kernel.org linux-doc@vger.kernel.org linux-kernel@vger.kernel.org linux-kselftest@vger.kernel.org linux-trace-kernel@vger.kernel.org maobibo@loongson.cn mathieu.desnoyers@efficios.com maz@kernel.org mhiramat@kernel.org michael.roth@amd.com mingo@redhat.com mlevitsk@redhat.com oupton@kernel.org pankaj.gupta@amd.com pbonzini@redhat.com prsampat@amd.com qperret@google.com ricarkol@google.com rick.p.edgecombe@intel.com rientjes@google.com rostedt@goodmis.org seanjc@google.com shivankg@amd.com shuah@kernel.org steven.price@arm.com tabba@google.com tglx@linutronix.de vannapurve@google.com vbabka@suse.cz willy@infradead.org wyihan@google.com x86@kernel.org

Subject

guest_memfd: In-place conversion support

Author

ackerleytng@google.com

Date

2026-02-02 22:29:39 +0000 UTC

Version

ackerleytng@google.com aik@amd.com andrew.jones@linux.dev binbin.wu@linux.intel.com bp@alien8.de brauner@kernel.org chao.p.peng@intel.com chao.p.peng@linux.intel.com chenhuacai@kernel.org corbet@lwn.net dave.hansen@linux.intel.com david@kernel.org hpa@zytor.com ira.weiny@intel.com jgg@nvidia.com jmattson@google.com jroedel@suse.de jthoughton@google.com kvm@vger.kernel.org linux-doc@vger.kernel.org linux-kernel@vger.kernel.org linux-kselftest@vger.kernel.org linux-trace-kernel@vger.kernel.org maobibo@loongson.cn mathieu.desnoyers@efficios.com maz@kernel.org mhiramat@kernel.org michael.roth@amd.com mingo@redhat.com mlevitsk@redhat.com oupton@kernel.org pankaj.gupta@amd.com pbonzini@redhat.com prsampat@amd.com qperret@google.com ricarkol@google.com rick.p.edgecombe@intel.com rientjes@google.com rostedt@goodmis.org seanjc@google.com shivankg@amd.com shuah@kernel.org steven.price@arm.com tabba@google.com tglx@linutronix.de vannapurve@google.com vbabka@suse.cz willy@infradead.org wyihan@google.com x86@kernel.org

Name	Content [All]
[RFC PATCH v2 01/37] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings	[Body]
[RFC PATCH v2 02/37] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES	[Body]
[RFC PATCH v2 03/37] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined	[Body]
[RFC PATCH v2 04/37] KVM: Stub in ability to disable per-VM memory attribute tracking	[Body]
[RFC PATCH v2 05/37] KVM: guest_memfd: Wire up kvm_get_memory_attributes() to per-gmem attributes	[Body]
[RFC PATCH v2 06/37] KVM: guest_memfd: Update kvm_gmem_populate() to use gmem attributes	[Body]
[RFC PATCH v2 07/37] KVM: Introduce KVM_SET_MEMORY_ATTRIBUTES2	[Body]
[RFC PATCH v2 08/37] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs	[Body]
[RFC PATCH v2 09/37] KVM: guest_memfd: Add support for KVM_SET_MEMORY_ATTRIBUTES2	[Body]
[RFC PATCH v2 10/37] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check	[Body]
[RFC PATCH v2 11/37] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86	[Body]
[RFC PATCH v2 12/37] KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes	[Body]
[RFC PATCH v2 13/37] KVM: selftests: Create gmem fd before "regular" fd when adding memslot	[Body]
[RFC PATCH v2 14/37] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset}	[Body]
[RFC PATCH v2 15/37] KVM: selftests: Add support for mmap() on guest_memfd in core library	[Body]
[RFC PATCH v2 16/37] KVM: selftests: Add selftests global for guest memory attributes capability	[Body]
[RFC PATCH v2 17/37] KVM: selftests: Update framework to use KVM_SET_MEMORY_ATTRIBUTES2	[Body]
[RFC PATCH v2 18/37] KVM: selftests: Add helpers for calling ioctls on guest_memfd	[Body]
[RFC PATCH v2 19/37] KVM: selftests: Test using guest_memfd for guest private memory	[Body]
[RFC PATCH v2 20/37] KVM: selftests: Test basic single-page conversion flow	[Body]
[RFC PATCH v2 21/37] KVM: selftests: Test conversion flow when INIT_SHARED	[Body]
[RFC PATCH v2 22/37] KVM: selftests: Test indexing in guest_memfd	[Body]
[RFC PATCH v2 23/37] KVM: selftests: Test conversion before allocation	[Body]
[RFC PATCH v2 24/37] KVM: selftests: Convert with allocated folios in different layouts	[Body]
[RFC PATCH v2 25/37] KVM: selftests: Test precision of conversion	[Body]
[RFC PATCH v2 26/37] KVM: selftests: Test that truncation does not change shared/private status	[Body]
[RFC PATCH v2 27/37] KVM: selftests: Test that shared/private status is consistent across processes	[Body]
[RFC PATCH v2 28/37] KVM: selftests: Test conversion with elevated page refcount	[Body]
[RFC PATCH v2 29/37] KVM: selftests: Reset shared memory after hole-punching	[Body]
[RFC PATCH v2 30/37] KVM: selftests: Provide function to look up guest_memfd details from gpa	[Body]
[RFC PATCH v2 31/37] KVM: selftests: Provide common function to set memory attributes	[Body]
[RFC PATCH v2 32/37] KVM: selftests: Check fd/flags provided to mmap() when setting up memslot	[Body]
[RFC PATCH v2 33/37] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe	[Body]
[RFC PATCH v2 34/37] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd	[Body]
[RFC PATCH v2 35/37] KVM: selftests: Add script to exercise private_mem_conversions_test	[Body]
[RFC PATCH v2 36/37] KVM: selftests: Update pre-fault test to work with per-guest_memfd attributes	[Body]
[RFC PATCH v2 37/37] KVM: selftests: Update private memory exits test work with per-gmem attributes	[Body]

Name

Content [All]

[RFC PATCH v2 01/37] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings

[RFC PATCH v2 02/37] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES

[RFC PATCH v2 03/37] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined

[RFC PATCH v2 04/37] KVM: Stub in ability to disable per-VM memory attribute tracking

[RFC PATCH v2 05/37] KVM: guest_memfd: Wire up kvm_get_memory_attributes() to per-gmem attributes

[RFC PATCH v2 06/37] KVM: guest_memfd: Update kvm_gmem_populate() to use gmem attributes

[RFC PATCH v2 07/37] KVM: Introduce KVM_SET_MEMORY_ATTRIBUTES2

[RFC PATCH v2 08/37] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs

[RFC PATCH v2 09/37] KVM: guest_memfd: Add support for KVM_SET_MEMORY_ATTRIBUTES2

[RFC PATCH v2 10/37] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check

[RFC PATCH v2 11/37] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86

[RFC PATCH v2 12/37] KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes

[RFC PATCH v2 13/37] KVM: selftests: Create gmem fd before "regular" fd when adding memslot

[RFC PATCH v2 14/37] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset}

[RFC PATCH v2 15/37] KVM: selftests: Add support for mmap() on guest_memfd in core library

[RFC PATCH v2 16/37] KVM: selftests: Add selftests global for guest memory attributes capability

[RFC PATCH v2 17/37] KVM: selftests: Update framework to use KVM_SET_MEMORY_ATTRIBUTES2

[RFC PATCH v2 18/37] KVM: selftests: Add helpers for calling ioctls on guest_memfd

[RFC PATCH v2 19/37] KVM: selftests: Test using guest_memfd for guest private memory

[RFC PATCH v2 20/37] KVM: selftests: Test basic single-page conversion flow

[RFC PATCH v2 21/37] KVM: selftests: Test conversion flow when INIT_SHARED

[RFC PATCH v2 22/37] KVM: selftests: Test indexing in guest_memfd

[RFC PATCH v2 23/37] KVM: selftests: Test conversion before allocation

[RFC PATCH v2 24/37] KVM: selftests: Convert with allocated folios in different layouts

[RFC PATCH v2 25/37] KVM: selftests: Test precision of conversion

[RFC PATCH v2 26/37] KVM: selftests: Test that truncation does not change shared/private status

[RFC PATCH v2 27/37] KVM: selftests: Test that shared/private status is consistent across processes

[RFC PATCH v2 28/37] KVM: selftests: Test conversion with elevated page refcount

[RFC PATCH v2 29/37] KVM: selftests: Reset shared memory after hole-punching

[RFC PATCH v2 30/37] KVM: selftests: Provide function to look up guest_memfd details from gpa

[RFC PATCH v2 31/37] KVM: selftests: Provide common function to set memory attributes

[RFC PATCH v2 32/37] KVM: selftests: Check fd/flags provided to mmap() when setting up memslot

[RFC PATCH v2 33/37] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe

[RFC PATCH v2 34/37] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd

[RFC PATCH v2 35/37] KVM: selftests: Add script to exercise private_mem_conversions_test

[RFC PATCH v2 36/37] KVM: selftests: Update pre-fault test to work with per-guest_memfd attributes

[RFC PATCH v2 37/37] KVM: selftests: Update private memory exits test work with per-gmem attributes

Session 2026-02-02

Passed

ID (for dev)	196e99b4-e69d-4101-a1b8-9c905dfed9a7
Status	finished
Triaged	OK [Log]
Execution Log	[Link]

Test	Base	Patched	Verdict
[KASAN] Build Base	e89f0e9a0a007e8c3afb8ecd739c0b3255422b00 [Config]		passed [Log]
[KASAN] Boot test: Base	e89f0e9a0a007e8c3afb8ecd739c0b3255422b00 [Config]		passed [Log]
[KASAN] Build Patched		e89f0e9a0a007e8c3afb8ecd739c0b3255422b00 [Config] [patched]	passed [Log]
[KASAN] Boot test: Patched		e89f0e9a0a007e8c3afb8ecd739c0b3255422b00 [Config] [patched]	passed [Log]
[KASAN] Fuzzing	e89f0e9a0a007e8c3afb8ecd739c0b3255422b00 [Config]	e89f0e9a0a007e8c3afb8ecd739c0b3255422b00 [Config] [patched]	passed [Log] [Artifacts]

Patches (37)

Series Summary

Sessions

Session 2026-02-02