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Re: [PATCH 2/2] hw/nvme/ctrl: Prohibit DMA accesses to devices (CVE-2021
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From: |
Keith Busch |
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Subject: |
Re: [PATCH 2/2] hw/nvme/ctrl: Prohibit DMA accesses to devices (CVE-2021-3929) |
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Date: |
Thu, 16 Dec 2021 10:02:19 -0800 |
On Thu, Dec 16, 2021 at 06:55:10PM +0100, Philippe Mathieu-Daudé wrote:
> Async DMA requests might access MMIO regions and re-program the
> NVMe controller internal registers while DMA requests are still
> scheduled or in flight. Avoid that by prohibing the controller
> to access non-memories regions.
Looks good.
Reviewed-by: Keith Busch <kbusch@kernel.org>