[PATCH v2 0/3] Fix __pkvm_init_vm error path

[Fuad Tabba]

On Thu, 21 May 2026 at 11:22, Vincent Donnefort <vdonnefort at google.com> wrote:
>
> Sashiko reported a potential refcount leak in the unlikely case where
> insert_vm_table_entry fails.
>
> While at it, I have added a fail-safe to __pkvm_hyp_donate_host to ensure this
> function doesn't allow leaking refcounted pages.
>
> Changes since v2:
>
>   * Proactively init hyp_page order field in hyp_pool_init
>
> v1 (https://lore.kernel.org/all/20260521081250.655226-1-vdonnefort@google.com/)
>
> *** BLURB HERE ***

nit: missing BLURB :)

/fuad



/fuad

>
> Vincent Donnefort (3):
>   KVM: arm64: Reset page order in pKVM hyp_pool_init
>   KVM: arm64: Fix __pkvm_init_vm error path
>   KVM: arm64: Add fail-safe for refcounted pages in
>     __pkvm_hyp_donate_host
>
>  arch/arm64/kvm/hyp/include/nvhe/mem_protect.h |  1 +
>  arch/arm64/kvm/hyp/nvhe/mem_protect.c         | 34 ++++++++++++++-----
>  arch/arm64/kvm/hyp/nvhe/page_alloc.c          |  6 +++-
>  arch/arm64/kvm/hyp/nvhe/pkvm.c                |  4 ++-
>  4 files changed, 34 insertions(+), 11 deletions(-)
>
>
> base-commit: 5200f5f493f79f14bbdc349e402a40dfb32f23c8
> --
> 2.54.0.746.g67dd491aae-goog
>