Dmar error on HP Microserver G8

[danilo78]

Hi guys,

I've only been using Unraid for about a six months. Recently I've been noticing that my Unraid server after upgrade show me from syslogs the following errors

 

DMAR: ERROR: DMA PTE for vPFN 0xf1f83 already set (to f1f83003 not 1ca38c803

Nas kernel: WARNING: CPU: 4 PID: 15747 at drivers/iommu/intel/iommu.c:2387 __domain_mapping+0x2e5/0x390 May  May 12 15:35:32 Nas kernel: CPU: 4 PID: 15747 Comm: kworker/u128:4 Tainted: G W I 5.15.38-Unraid

 

I tried to google but couldn't find a solution to the problem. Can anyone suggest a fix ?

I have attached diagnostic files

 

 

Thanks!

 

 

 

nas-diagnostics-20220512-1553.zip

[JorgeB]

If you don't need it try disabling IOMMU, error appears to be rated to that with the LSI HBA, since it's a microserver I assume you can't install the HBA in a different PCIe slot, if you can also try that.

[danilo78]

Thank you JorgeB,

How can disable IOMMU from bios or somewhere else?

[JorgeB]

17 minutes ago, danilo78 said:

bios

This

[danilo78]

Thanks a lot, i disabled iommu and fixed the errors.