kernel: pci 0000: 7f: 12.4: BARRA 3: falha ao atribuir [tamanho da mem. 0x00000010]

Question

Minha máquina host está sempre presa recentemente. e às vezes também tela preta.

E quando eu inicio minha máquina host (CentOS 7.2), ele registra essas informações no /var/log/messages :

Os registros estão abaixo:

Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.0: BAR 5: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.4: BAR 1: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.4: BAR 1: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.4: BAR 3: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.4: BAR 3: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.4: BAR 5: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:ff:12.4: BAR 5: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci_bus 0000:ff: Some PCI device resources are unassigned, try booting with pci=realloc
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 2: no space for [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 2: failed to assign [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 4: no space for [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 4: failed to assign [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 2: no space for [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 2: failed to assign [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 4: no space for [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 4: failed to assign [mem size 0x00000040]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 1: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 1: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 3: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 3: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 5: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.0: BAR 5: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 1: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 1: failed to assign [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 3: no space for [mem size 0x00000010]
Aug  8 16:29:18 localhost kernel: pci 0000:7f:12.4: BAR 3: failed to assign [mem size 0x00000010]

O que há de errado com minha máquina host?

Eu uso o df -h para verificar o disco:

[root@ha-node3 log]# df -h

/dev/mapper/centos-root   50G  6.0G   45G   12% /
devtmpfs                 111G     0  111G    0% /dev
tmpfs                    111G     0  111G    0% /dev/shm
tmpfs                    111G  9.3M  111G    1% /run
tmpfs                    111G     0  111G    0% /sys/fs/cgroup
/dev/sdi1                494M  123M  371M   25% /boot
/dev/mapper/centos-home  169G   33M  169G    1% /home
tmpfs                     23G     0   23G    0% /run/user/0