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Infiniband Connectivity Failed on One Compute Node After Card Replacement with Errors "send_generic_mcast_pkt ring full" or "discover_send error ret -11" (Doc ID 2523227.1)

Last updated on OCTOBER 25, 2020

Applies to:

Oracle VM - Version 3.2.10 and later
Linux x86-64


Feb 21 18:39:13 <hostname>kernel: T28902509826 [mlx4_vnic] mlx4_0:2_Pffff:fip_solicit_send:366: discover_send error ret -11
Feb 21 18:39:21 <hostname>kernel: T28902517856 [mlx4_vnic] mlx4_0:1_Pffff:fip_solicit_send:366: discover_send error ret -11


 [mlx4_vnic] mlx4_0:1:send_generic_mcast_pkt:234: send_generic_mcast_pkt ring full: QPN 0x557: tail=2245 head=2309 diff=64
 [mlx4_vnic] mlx4_0:1_Pffff:fip_solicit_send:366: discover_send error ret -11
 [mlx4_vnic] mlx4_0:2:send_generic_mcast_pkt:234: send_generic_mcast_pkt ring full: QPN 0x558: tail=2245 head=2309 diff=64


Module mlx4_core locked in memory until next boot

Low level hardware support loaded:
mlx4_ib mlx4_core

Upper layer protocol modules:
ib_iser ib_srp mlx4_vnic rds_rdma rds ib_sdp ib_ipoib

User space access modules:
rdma_ucm ib_ucm ib_uverbs ib_umad

Connection management modules:
rdma_cm ib_cm iw_cm

Configured IPoIB interfaces: none
Currently active IPoIB interfaces: none

Module mlx4_ib is loaded
Module mlx4_core is loaded


Customer replaced a new HCA card on compute node ( ibstat and ibstatus command not work)



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