Re: [PATCH v2] KVM: arm64: vgic-v3: take an LPI reference in vgic_v3_save_pending_tables
Oliver Upton <[email protected]>
| Newsgroups | org.kernel.vger.stable,dev.linux.lists.kvmarm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Fri, 07 Aug 2026 10:55:34 +0800, Qihang wrote:
> vgic_v3_save_pending_tables() iterates dist->lpi_xa using xa_for_each()
> and dereferences the returned struct vgic_irq in the loop body without
> holding a reference on the LPI.
>
> The xarray iterator only provides temporary RCU coverage while looking up
> the current entry. That is not sufficient for this loop body, which reads
> fields from struct vgic_irq and performs guest memory accesses before the
> iteration completes.
>
> [...]
Applied to next, thanks!
[1/1] KVM: arm64: vgic-v3: take an LPI reference in vgic_v3_save_pending_tables
https://git.kernel.org/kvmarm/kvmarm/c/f5b8f203bfc0
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Best,
Oliver