"mlx4_core failed to bond device -524" is output when using mlx4 bonding interface in Red Hat Enterprise Linux 7.

Issue

• When configure a mlx4 bonding interface then restart the network service or ifup the bonding interface, error message "mlx4_core failed to bond device -524" is output on /var/log/messages file, but it does not appear to affect the functionality of the interfaces.

Dec  x xx:xx:xx localhost kernel: mlx4_en: enp132s0: Link Up
Dec  x xx:xx:xx localhost kernel: bond1: link status definitely up for interface enp132s0, 40000 Mbps full duplex
Dec  x xx:xx:xx localhost kernel: bond1: making interface enp132s0 the new active one
Dec  x xx:xx:xx localhost kernel: bond1: first active interface up!
Dec  x xx:xx:xx localhost kernel: IPv6: ADDRCONF(NETDEV_CHANGE): bond1: link becomes ready
Dec  x xx:xx:xx localhost kernel: mlx4_core 0000:84:00.0: Failed to bond device: -524
Dec  x xx:xx:xx localhost kernel: mlx4_en: enp132s0: Fail to bond device
Dec  x xx:xx:xx localhost kernel: mlx4_core 0000:84:00.0: Failed to bond device: -524
Dec  x xx:xx:xx localhost kernel: mlx4_en: enp132s0: Fail to bond device