PCI-related errors appear in the kernel log due to having non-compliant BARs

Solution Verified - Updated -

Issue

The following messages may be observed in the kernel log:

Dec 29 19:54:25 localhost kernel: pci 0000:ff:12.4: BAR 4: failed to assign [mem size 0x00000040]
Dec 29 19:54:25 localhost kernel: pci 0000:ff:12.0: BAR 1: failed to assign [mem size 0x00000010]

Environment

  • Red Hat Enterprise Linux 7
  • Intel Broadwell-EP CPU
  • kernel version is older than 3.10.0-514.el7

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