linux-kernel - Re: [Bug 209321] DMAR: [DMA Read] Request device [03:00.0] PASID ffffffff fault addr fffd3000 [fault reason 06] PTE Read access is not set

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Message-ID: <20201008082249.GA3107@8bytes.org>
Date:   Thu, 8 Oct 2020 10:22:49 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     linux-pci@...r.kernel.org, iommu@...ts.linux-foundation.org,
        Todd Brandt <todd.e.brandt@...ux.intel.com>,
        Len Brown <lenb@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [Bug 209321] DMAR: [DMA Read] Request device [03:00.0] PASID
 ffffffff fault addr fffd3000 [fault reason 06] PTE Read access is not set

Hi Bjorn,

On Wed, Oct 07, 2020 at 10:43:14AM -0500, Bjorn Helgaas wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=209321
> 
> Not much detail in the bugzilla yet, but apparently this started in
> v5.8.0-rc1:
> 
>   DMAR: [DMA Read] Request device [03:00.0] PASID ffffffff fault addr fffd3000 [fault reason 06] PTE Read access is not set
> 
> Currently assigned to Driver/PCI, but not clear to me yet whether PCI
> is the culprit or the victim.

Thanks for the heads-up, looks like Intel is already on it.

Regards,

	Joerg