From: Sean Christopherson <seanjc@google.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Michal Luczaj <mhal@rbox.co>,
kvm@vger.kernel.org
Subject: Re: [PATCH 1/3] KVM: x86/xen: Validate port number in SCHEDOP_poll
Date: Wed, 23 Nov 2022 16:25:50 +0000 [thread overview]
Message-ID: <Y35JjlgjvtkAMk7C@google.com> (raw)
In-Reply-To: <20221123002030.92716-1-dwmw2@infradead.org>
On Wed, Nov 23, 2022, David Woodhouse wrote:
> From: David Woodhouse <dwmw@amazon.co.uk>
>
> We shouldn't allow guests to poll on arbitrary port numbers off the end
> of the event channel table.
>
> Fixes: 1a65105a5aba ("KVM: x86/xen: handle PV spinlocks slowpath")
> [dwmw2: my bug though; the original version did check the validity as a
> side-effect of an idr_find() which I ripped out in refactoring.]
> Reported-by: Michal Luczaj <mhal@rbox.co>
> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
> Cc: stable@kernel.org
> ---
Reviewed-by: Sean Christopherson <seanjc@google.com>
prev parent reply other threads:[~2022-11-23 16:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-23 0:20 [PATCH 1/3] KVM: x86/xen: Validate port number in SCHEDOP_poll David Woodhouse
2022-11-23 0:20 ` [PATCH 2/3] KVM: x86/xen: Only do in-kernel acceleration of hypercalls for guest CPL0 David Woodhouse
2022-11-23 16:26 ` Sean Christopherson
2022-11-23 0:20 ` [PATCH 3/3] KVM: Update gfn_to_pfn_cache khva when it moves within the same page David Woodhouse
2022-11-23 12:25 ` David Woodhouse
2022-11-23 16:10 ` Sean Christopherson
2022-11-23 16:25 ` Sean Christopherson [this message]
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