Frequent soft lockup messages on VXNETD process while polling over datagram socket.

Issue

• Frequent soft lockup messages on VXNETD process while polling over datagram socket.

[5036075.306320] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036103.240357] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036131.174395] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036159.108430] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036187.042468] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036226.948236] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036254.882275] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]
[5036282.816358] NMI watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [vxnetd:4609]

• Refer the backtrace.

#10 [ffff880da5edb680] add_wait_queue at ffffffff810b4b4c
#11 [ffff880da5edb6a8] __pollwait at ffffffff8121a8af
#12 [ffff880da5edb6d8] datagram_poll at ffffffff81581f8c
#13 [ffff880da5edb6f0] udp_poll at ffffffff81604409
#14 [ffff880da5edb718] kmsg_sys_poll at ffffffffc0d58e83 [vxio]
#15 [ffff880da5edb9e0] nmcom_server_start at ffffffffc0fbafbe [vxio]
#16 [ffff880da5edbec8] kthread at ffffffff810b4031
#17 [ffff880da5edbf50] ret_from_fork at ffffffff816c055d