linux-kernel - Re: [PATCH] KVM: arm/arm64: Fix KVM_VGIC_V3_ADDR_TYPE

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Date:   Tue, 13 Apr 2021 15:05:41 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     james.morse@....com, eric.auger.pro@...il.com,
        kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org,
        alexandru.elisei@....com, kvm@...r.kernel.org,
        Eric Auger <eric.auger@...hat.com>, suzuki.poulose@....com
Cc:     gshan@...hat.com, drjones@...hat.com
Subject: Re: [PATCH] KVM: arm/arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST read

On Mon, 12 Apr 2021 17:00:34 +0200, Eric Auger wrote:
> When reading the base address of the a REDIST region
> through KVM_VGIC_V3_ADDR_TYPE_REDIST we expect the
> redistributor region list to be populated with a single
> element.
> 
> However list_first_entry() expects the list to be non empty.
> Instead we should use list_first_entry_or_null which effectively
> returns NULL if the list is empty.

Applied to kvm-arm64/vgic-5.13, thanks!

[1/1] KVM: arm/arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST read
      commit: 94ac0835391efc1a30feda6fc908913ec012951e

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.