Why system with 'bnx2x' NIC module hangs or ethernet link flaps generating error- "bnx2x_attn_int_deasserted3" ?

Solution Unverified - Updated -

Issue

  • Below logs are seen at the time of link flap.
Dec  4 15:27:15 HOSTNAME kernel: bnx2x: [bnx2x_attn_int_deasserted3:3817(eth2)]LATCHED attention 0x04000000 (masked)
Dec  4 15:27:15 HOSTNAME kernel: bnx2x: [bnx2x_attn_int_deasserted3:3821(eth2)]GRC time-out 0x080020b5
Dec  4 15:27:15 HOSTNAME kernel: bnx2x 0000:11:00.0: eth2: NIC Link is Down
Dec  4 15:27:15 HOSTNAME kernel: bonding: bond0: link status down for interface eth2, disabling it in 1000 ms.
Dec  4 15:27:16 HOSTNAME kernel: bnx2x 0000:11:00.0: eth2: NIC Link is Up, 1000 Mbps full duplex, Flow control: none
Dec  4 15:27:16 HOSTNAME kernel: bonding: bond0: link status up again after 200 ms for interface eth2.
  • What can be causing these bnx2x_attn_int_deasserted3 messages ?

Environment

  • Red Hat Enterprise Linux 5.X
  • Red Hat Enterprise Linux 6.X
  • bnx2x module

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