System hang with lot of blocked tasks and experiencing high load in using onload module

Issue

• System hang with lots of blocked tasks hung for very long period
• Onload module work items causing a hang of worker threads in pool

      LOAD AVERAGE: 2816.06, 2815.92, 2815.21
      crash> ps -S
        RU: 66
        IN: 1751
        UN: 2815 <------
        WA: 1 

Blocked tasks hung for over 22 days: 
crash> ps -m | grep UN | tail -n 7
[ 1 22:39:33.366] [UN]  PID: 53025   TASK: ffff8801e29f9fa0  CPU: 19  COMMAND: "java" 
[ 1 22:39:35.748] [UN]  PID: 103482  TASK: ffff887b5f6c1fa0  CPU: 27  COMMAND: "java" 
[ 1 22:39:46.882] [UN]  PID: 2702    TASK: ffff883f7d4e1fa0  CPU: 7   COMMAND: "vnetd"
[ 1 22:40:00.330] [UN]  PID: 103997  TASK: ffff880322ff2f70  CPU: 4   COMMAND: "kworker/4:1"
[ 1 22:40:02.696] [UN]  PID: 58449   TASK: ffff884179a03f40  CPU: 50  COMMAND: "sshd"
[ 1 22:40:12.046] [UN]  PID: 39413   TASK: ffff8843ae710000  CPU: 49  COMMAND: "kworker/49:2" 
[ 1 22:40:12.202] [UN]  PID: 2463    TASK: ffff887f6e683f40  CPU: 48  COMMAND: "snmpd"

crash> bt 39413
PID: 39413  TASK: ffff8843ae710000  CPU: 49  COMMAND: "kworker/49:2"
 #0 [ffff880c422a7178] __schedule at ffffffff816ab0dc
 #1 [ffff880c422a7208] schedule at ffffffff816ab6d9
 #2 [ffff880c422a7218] schedule_timeout at ffffffff816a90e9
 #3 [ffff880c422a72c0] wait_for_completion at ffffffff816aba8d
 #4 [ffff880c422a7320] xfs_buf_submit_wait at ffffffffc07d00c6 [xfs]
 #5 [ffff880c422a7348] xfs_bwrite at ffffffffc07d04d4 [xfs]
 #6 [ffff880c422a7368] xfs_reclaim_inode at ffffffffc07d8bb1 [xfs]
 #7 [ffff880c422a73b8] xfs_reclaim_inodes_ag at ffffffffc07d8e47 [xfs]
 #8 [ffff880c422a7550] xfs_reclaim_inodes_nr at ffffffffc07d9e33 [xfs]
 #9 [ffff880c422a7570] xfs_fs_free_cached_objects at ffffffffc07e9735 [xfs]
#10 [ffff880c422a7580] prune_super at ffffffff81205648
#11 [ffff880c422a75b8] shrink_slab at ffffffff81197133
#12 [ffff880c422a7658] do_try_to_free_pages at ffffffff8119a292
#13 [ffff880c422a76d0] try_to_free_pages at ffffffff8119a4ac
#14 [ffff880c422a7768] __alloc_pages_slowpath at ffffffff816a1c1b
#15 [ffff880c422a7858] __alloc_pages_nodemask at ffffffff8118eaa5
#16 [ffff880c422a7908] kmalloc_large_node at ffffffff816a2cf4
#17 [ffff880c422a7918] __kmalloc_node_track_caller at ffffffff811e41c7
#18 [ffff880c422a7970] __kmalloc_reserve at ffffffff81574851
#19 [ffff880c422a79b0] __alloc_skb at ffffffff815759ad
#20 [ffff880c422a7a00] netlink_alloc_skb at ffffffff815bce7b
#21 [ffff880c422a7a38] netlink_dump at ffffffff815bd0b3
#22 [ffff880c422a7a68] netlink_recvmsg at ffffffff815bd505
#23 [ffff880c422a7af8] sock_recvmsg at ffffffff8156c88f
#24 [ffff880c422a7c60] kernel_recvmsg at ffffffff8156c90a
#25 [ffff880c422a7c80] netlink_read.constprop.23 at ffffffffc052423d [onload_cplane]
#26 [ffff880c422a7d10] read_rtnl_response at ffffffffc052434e [onload_cplane]
#27 [ffff880c422a7d58] cicpos_dump_tables at ffffffffc05247ec [onload_cplane]
#28 [ffff880c422a7df8] cicpos_worker at ffffffffc0524c1e [onload_cplane]  
#29 [ffff880c422a7e20] process_one_work at ffffffff810aa3ba
#30 [ffff880c422a7e68] worker_thread at ffffffff810ab086
#31 [ffff880c422a7ec8] kthread at ffffffff810b252f
#32 [ffff880c422a7f50] ret_from_fork at ffffffff816b8798