Syzbot CI

Subject	guest_memfd: In-place conversion support
Author	ackerleytng@google.com
Date	2026-03-13 06:12:40 +0000 UTC
Version
Cc	ackerleytng@google.com aik@amd.com andrew.jones@linux.dev aneesh.kumar@kernel.org binbin.wu@linux.intel.com bp@alien8.de brauner@kernel.org chao.p.peng@linux.intel.com corbet@lwn.net dave.hansen@linux.intel.com david@kernel.org forkloop@google.com hpa@zytor.com ira.weiny@intel.com jgg@ziepe.ca 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 mathieu.desnoyers@efficios.com mhiramat@kernel.org michael.roth@amd.com mingo@redhat.com oupton@kernel.org pankaj.gupta@amd.com pbonzini@redhat.com pratyush@kernel.org qperret@google.com rick.p.edgecombe@intel.com rientjes@google.com rostedt@goodmis.org seanjc@google.com shivankg@amd.com shuah@kernel.org skhan@linuxfoundation.org steven.price@arm.com suzuki.poulose@arm.com tabba@google.com tglx@kernel.org vannapurve@google.com vbabka@kernel.org willy@infradead.org wyihan@google.com x86@kernel.org yan.y.zhao@intel.com

Subject

guest_memfd: In-place conversion support

Author

ackerleytng@google.com

Date

2026-03-13 06:12:40 +0000 UTC

Version

ackerleytng@google.com aik@amd.com andrew.jones@linux.dev aneesh.kumar@kernel.org binbin.wu@linux.intel.com bp@alien8.de brauner@kernel.org chao.p.peng@linux.intel.com corbet@lwn.net dave.hansen@linux.intel.com david@kernel.org forkloop@google.com hpa@zytor.com ira.weiny@intel.com jgg@ziepe.ca 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 mathieu.desnoyers@efficios.com mhiramat@kernel.org michael.roth@amd.com mingo@redhat.com oupton@kernel.org pankaj.gupta@amd.com pbonzini@redhat.com pratyush@kernel.org qperret@google.com rick.p.edgecombe@intel.com rientjes@google.com rostedt@goodmis.org seanjc@google.com shivankg@amd.com shuah@kernel.org skhan@linuxfoundation.org steven.price@arm.com suzuki.poulose@arm.com tabba@google.com tglx@kernel.org vannapurve@google.com vbabka@kernel.org willy@infradead.org wyihan@google.com x86@kernel.org yan.y.zhao@intel.com

Name	Content [All]
[PATCH RFC v3 01/43] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings	[Body]
[PATCH RFC v3 02/43] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES	[Body]
[PATCH RFC v3 03/43] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined	[Body]
[PATCH RFC v3 04/43] KVM: Stub in ability to disable per-VM memory attribute tracking	[Body]
[PATCH RFC v3 05/43] KVM: guest_memfd: Wire up kvm_get_memory_attributes() to per-gmem attributes	[Body]
[PATCH RFC v3 06/43] KVM: guest_memfd: Update kvm_gmem_populate() to use gmem attributes	[Body]
[PATCH RFC v3 07/43] KVM: Introduce KVM_SET_MEMORY_ATTRIBUTES2	[Body]
[PATCH RFC v3 08/43] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs	[Body]
[PATCH RFC v3 09/43] KVM: guest_memfd: Add support for KVM_SET_MEMORY_ATTRIBUTES2	[Body]
[PATCH RFC v3 10/43] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check	[Body]
[PATCH RFC v3 11/43] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86	[Body]
[PATCH RFC v3 12/43] KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes	[Body]
[PATCH RFC v3 13/43] KVM: selftests: Create gmem fd before "regular" fd when adding memslot	[Body]
[PATCH RFC v3 14/43] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset}	[Body]
[PATCH RFC v3 15/43] KVM: selftests: Add support for mmap() on guest_memfd in core library	[Body]
[PATCH RFC v3 16/43] KVM: selftests: Add selftests global for guest memory attributes capability	[Body]
[PATCH RFC v3 17/43] KVM: selftests: Update framework to use KVM_SET_MEMORY_ATTRIBUTES2	[Body]
[PATCH RFC v3 18/43] KVM: selftests: Add helpers for calling ioctls on guest_memfd	[Body]
[PATCH RFC v3 19/43] KVM: selftests: Test using guest_memfd for guest private memory	[Body]
[PATCH RFC v3 20/43] KVM: selftests: Test basic single-page conversion flow	[Body]
[PATCH RFC v3 21/43] KVM: selftests: Test conversion flow when INIT_SHARED	[Body]
[PATCH RFC v3 22/43] KVM: selftests: Test indexing in guest_memfd	[Body]
[PATCH RFC v3 23/43] KVM: selftests: Test conversion before allocation	[Body]
[PATCH RFC v3 24/43] KVM: selftests: Convert with allocated folios in different layouts	[Body]
[PATCH RFC v3 25/43] KVM: selftests: Test precision of conversion	[Body]
[PATCH RFC v3 26/43] KVM: selftests: Test that truncation does not change shared/private status	[Body]
[PATCH RFC v3 27/43] KVM: selftests: Test that shared/private status is consistent across processes	[Body]
[PATCH RFC v3 28/43] KVM: selftests: Test conversion with elevated page refcount	[Body]
[PATCH RFC v3 29/43] KVM: selftests: Reset shared memory after hole-punching	[Body]
[PATCH RFC v3 30/43] KVM: selftests: Provide function to look up guest_memfd details from gpa	[Body]
[PATCH RFC v3 31/43] KVM: selftests: Provide common function to set memory attributes	[Body]
[PATCH RFC v3 32/43] KVM: selftests: Check fd/flags provided to mmap() when setting up memslot	[Body]
[PATCH RFC v3 33/43] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe	[Body]
[PATCH RFC v3 34/43] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd	[Body]
[PATCH RFC v3 35/43] KVM: selftests: Add script to exercise private_mem_conversions_test	[Body]
[PATCH RFC v3 36/43] KVM: selftests: Update pre-fault test to work with per-guest_memfd attributes	[Body]
[PATCH RFC v3 37/43] KVM: selftests: Update private memory exits test work with per-gmem attributes	[Body]
[PATCH RFC v3 38/43] KVM: guest_memfd: Introduce default handlers for content modes	[Body]
[PATCH RFC v3 39/43] KVM: guest_memfd: Apply content modes while setting memory attributes	[Body]
[PATCH RFC v3 40/43] KVM: x86: Add support for applying content modes	[Body]
[PATCH RFC v3 41/43] KVM: x86: Support content mode ZERO for TDX	[Body]
[PATCH RFC v3 42/43] KVM: selftests: Allow flags to be specified in set_memory_attributes functions	[Body]
[PATCH RFC v3 43/43] KVM: selftests: Update tests to use flag-enabled library functions	[Body]

Name

Content [All]

[PATCH RFC v3 01/43] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings

[PATCH RFC v3 02/43] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES

[PATCH RFC v3 03/43] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined

[PATCH RFC v3 04/43] KVM: Stub in ability to disable per-VM memory attribute tracking

[PATCH RFC v3 05/43] KVM: guest_memfd: Wire up kvm_get_memory_attributes() to per-gmem attributes

[PATCH RFC v3 06/43] KVM: guest_memfd: Update kvm_gmem_populate() to use gmem attributes

[PATCH RFC v3 07/43] KVM: Introduce KVM_SET_MEMORY_ATTRIBUTES2

[PATCH RFC v3 08/43] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs

[PATCH RFC v3 09/43] KVM: guest_memfd: Add support for KVM_SET_MEMORY_ATTRIBUTES2

[PATCH RFC v3 10/43] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check

[PATCH RFC v3 11/43] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86

[PATCH RFC v3 12/43] KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes

[PATCH RFC v3 13/43] KVM: selftests: Create gmem fd before "regular" fd when adding memslot

[PATCH RFC v3 14/43] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset}

[PATCH RFC v3 15/43] KVM: selftests: Add support for mmap() on guest_memfd in core library

[PATCH RFC v3 16/43] KVM: selftests: Add selftests global for guest memory attributes capability

[PATCH RFC v3 17/43] KVM: selftests: Update framework to use KVM_SET_MEMORY_ATTRIBUTES2

[PATCH RFC v3 18/43] KVM: selftests: Add helpers for calling ioctls on guest_memfd

[PATCH RFC v3 19/43] KVM: selftests: Test using guest_memfd for guest private memory

[PATCH RFC v3 20/43] KVM: selftests: Test basic single-page conversion flow

[PATCH RFC v3 21/43] KVM: selftests: Test conversion flow when INIT_SHARED

[PATCH RFC v3 22/43] KVM: selftests: Test indexing in guest_memfd

[PATCH RFC v3 23/43] KVM: selftests: Test conversion before allocation

[PATCH RFC v3 24/43] KVM: selftests: Convert with allocated folios in different layouts

[PATCH RFC v3 25/43] KVM: selftests: Test precision of conversion

[PATCH RFC v3 26/43] KVM: selftests: Test that truncation does not change shared/private status

[PATCH RFC v3 27/43] KVM: selftests: Test that shared/private status is consistent across processes

[PATCH RFC v3 28/43] KVM: selftests: Test conversion with elevated page refcount

[PATCH RFC v3 29/43] KVM: selftests: Reset shared memory after hole-punching

[PATCH RFC v3 30/43] KVM: selftests: Provide function to look up guest_memfd details from gpa

[PATCH RFC v3 31/43] KVM: selftests: Provide common function to set memory attributes

[PATCH RFC v3 32/43] KVM: selftests: Check fd/flags provided to mmap() when setting up memslot

[PATCH RFC v3 33/43] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe

[PATCH RFC v3 34/43] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd

[PATCH RFC v3 35/43] KVM: selftests: Add script to exercise private_mem_conversions_test

[PATCH RFC v3 36/43] KVM: selftests: Update pre-fault test to work with per-guest_memfd attributes

[PATCH RFC v3 37/43] KVM: selftests: Update private memory exits test work with per-gmem attributes

[PATCH RFC v3 38/43] KVM: guest_memfd: Introduce default handlers for content modes

[PATCH RFC v3 39/43] KVM: guest_memfd: Apply content modes while setting memory attributes

[PATCH RFC v3 40/43] KVM: x86: Add support for applying content modes

[PATCH RFC v3 41/43] KVM: x86: Support content mode ZERO for TDX

[PATCH RFC v3 42/43] KVM: selftests: Allow flags to be specified in set_memory_attributes functions

[PATCH RFC v3 43/43] KVM: selftests: Update tests to use flag-enabled library functions

Session 2026-03-13

Passed

ID (for dev)	910d8062-6389-48e3-b6ff-89d63bd04469
Status	finished
Triaged	OK [Log]
Execution Log	[Link]

Test	Base	Patched	Verdict
[KASAN] Build Base	d2ea4ff1ce50787a98a3900b3fb1636f3620b7cf [Config]		passed [Log]
[KASAN] Boot test: Base	d2ea4ff1ce50787a98a3900b3fb1636f3620b7cf [Config]		passed [Log]
[KASAN] Build Patched		d2ea4ff1ce50787a98a3900b3fb1636f3620b7cf [Config] [patched]	passed [Log]
[KASAN] Boot test: Patched		d2ea4ff1ce50787a98a3900b3fb1636f3620b7cf [Config] [patched]	passed [Log]
[KASAN] Fuzz	d2ea4ff1ce50787a98a3900b3fb1636f3620b7cf [Config]	d2ea4ff1ce50787a98a3900b3fb1636f3620b7cf [Config] [patched]	passed [Log] [Artifacts]

Patches (43)

Series Summary

Sessions

Session 2026-03-13