Hyper-V SR-IOV device fails with "failed with error -28"

Solution Unverified - Updated -

Issue

  • Hyper-V SR-IOV device fails with failed with error -28
  • Issue with HyperV RHEL8 Guest, we can't seem to connect to LAN on the VM with SR-IOV active.
  • No Network Connection on our RHEL8 machines on Hyper-V
[ 4425.204358] bnxt_en a347:00:02.0 (unnamed net_device) (uninitialized): hwrm req_type 0x27 seq id 0xc error 0x4
[ 4425.204395] bnxt_en a347:00:02.0 (unnamed net_device) (uninitialized): Probe phy can't update link (rc: ffffffe4)
[ 4425.205961] bnxt_en: probe of a347:00:02.0 failed with error -28
[ 4455.343517] bnxt_en a347:00:02.0 (unnamed net_device) (uninitialized): hwrm req_type 0x27 seq id 0xc error 0x4
[ 4455.343556] bnxt_en a347:00:02.0 (unnamed net_device) (uninitialized): Probe phy can't update link (rc: ffffffe4)
[ 4455.345064] bnxt_en: probe of a347:00:02.0 failed with error -28

Environment

  • Red Hat Enterprise Linux 8.6 as Hyper-V Virtual Machine
  • Microsoft Hyper-V virtualization hypervisor
  • Broadcom SR-IOV Virtual Function (VF) using bnxt_en driver

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