https://bugs.dpdk.org/show_bug.cgi?id=1444

            Bug ID: 1444
           Summary: DMAR error in kernel caused FlexRAN retarted
           Product: DPDK
           Version: 22.11
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: juoren_wang@pegatroncorp.com
  Target Milestone: ---

Hi sir,

Our gNB running FlexRAN on pod but sometimes will got DMAR error in kernel, it
will caused it stop and restartrd, we don't know what happened in DPDK? could
you please help/suggest the direction to check what is means for and probably
caused?

Test environment
1) OS : WRCP 22.12 patch4 (StarlingX Debian 5.10.177.1.stx.73)
2) DPDK : 22.11.6
2) NIC : Intel E823 (intel ice-d CPU built-in NIC)
3) NIC : Device id (pf/vf): 8086:188c / 8086:1889
4) Accelerator: Intel Acc100 
5) Used Kernel driver and F/W version
Driver version: 1.10.1.2 (ice)
firmware-version: 3.26

--Syslog-----------------------------------------------------------------------
2024-03-14T15:10:59.004 controller-0 kernel: err [283403.137190] DMAR: [DMA
Read] Request device [89:01.2] PASID ffffffff fault addr 280103000 [fault
reason 06] PTE Read access is not set
2024-03-14T15:10:59.004 controller-0 kernel: err [283403.137199] DMAR: DRHD:
handling fault status reg 2
2024-03-14T15:10:59.004 controller-0 kernel: err [283403.137201] DMAR: [DMA
Read] Request device [89:01.2] PASID ffffffff fault addr 28010a000 [fault
reason 06] PTE Read access is not set
2024-03-14T15:10:59.004 controller-0 kernel: err [283403.137206] DMAR: DRHD:
handling fault status reg 3
2024-03-14T15:10:59.004 controller-0 kernel: info [283403.137206] ice
0000:89:00.0: 1 Tx Malicious Driver Detection events detected on PF 0 VF 2 MAC
00:02:01:1a:73:d1.
2024-03-14T15:10:59.004 controller-0 kernel: err [283403.137208] DMAR: [DMA
Read] Request device [89:01.2] PASID ffffffff fault addr 28010b000 [fault
reason 06] PTE Read access is not set
2024-03-14T15:10:59.004 controller-0 kernel: err [283403.137217] DMAR: DRHD:
handling fault status reg 3
--------------------------------------------------------------------------- 

Thank you
Best Regards,
Juoren

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