Not running any VMs but I did have SR-IOV and VT-X enabled in the BIOS.
Server has a HP B120i which is a fakeraid device and the drives are
accessed as simple AHCI devices.
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In my case the host is not running any virtual machines. I have another
similar HPE Gen9 server (without the HPE Smart HBA H240 SATA controller)
that doesn't have the problem. So in my case I suspect the H240
controller is (at least part of) the problem.
@phdonnelly, are you using VMs and/or do
With regards to the patch here:
https://lists.linuxfoundation.org/pipermail/iommu/2021-October/060115.html
It is mentioned this issue can occur if you are passing through a PCI
device to a virtual machine guest. This patch seems like it never made
it into the kernel. So I am curious if you are
I hit this bug upgrading my home server (proliant microserver gen9) and
it seems to be causing memory corruption when it occurs ( at least in
combination with zfs ). Using zfs mirrored root I experienced this issue
after only a few minutes uptime, with DMAR messages flooding the log and
very high
If this question was meant for me: I cannot really say, in my case no
VMs are involved at all.
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https://bugs.launchpad.net/bugs/1970453
Title:
DMAR: ERROR: DMA PTE for vPFN 0x7bf32
Is this related?
https://lists.linuxfoundation.org/pipermail/iommu/2021-October/059955.html
https://lists.linuxfoundation.org/pipermail/iommu/2021-November/060249.html
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I tried the latest currently available 5.15 kernel
(https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.15.36/amd64/,
5.15.36-051536-generic #202204271420 SMP Wed Apr 27 16:37:41 UTC 2022
x86_64 x86_64 x86_64 GNU/Linux). The problem still occurs there.
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Please give mainline kernel a try:
https://wiki.ubuntu.com/Kernel/MainlineBuilds
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https://bugs.launchpad.net/bugs/1970453
Title:
DMAR: ERROR: DMA PTE for vPFN 0x7bf32 already set
To
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1970453
Title:
