list corruption in rpcrdma causes kernel crash on RHEL

Issue

• System crash following kernel list debug warnings

  WARNING: at lib/list_debug.c:53 __list_del_entry+0x63/0xd0()
  list_del corruption, ffff886fd1932020->next is LIST_POISON1 (dead000000100100)
  Modules linked in: ... nfsv4 nfs xprtrdma ...
  CPU: 56 PID: 0 Comm: swapper/56 Tainted: G        W   --------------   3.10.0-229.14.1.el7.x86_64 #1
  Hardware name: Supermicro H8QG6/H8QG6, BIOS 3.5        12/16/2013
  ffff888026c03dd8 cc57d15515df6c5e ffff888026c03d90 ffffffff81604516
  ffff888026c03dc8 ffffffff8106e29b ffff886fd1932020 0000000000000000
  0000000000000246 ffff886fd1932000 0000000000000001 ffff888026c03e30
  Call Trace:
  <IRQ>  [<ffffffff81604516>] dump_stack+0x19/0x1b
  [<ffffffff8106e29b>] warn_slowpath_common+0x6b/0xb0
  [<ffffffff8106e33c>] warn_slowpath_fmt+0x5c/0x80
  [<ffffffff812ed8f3>] __list_del_entry+0x63/0xd0
  [<ffffffff812ed96d>] list_del+0xd/0x30
  [<ffffffffa0487d3b>] rpcrdma_run_tasklet+0x3b/0xa0 [xprtrdma]
  [<ffffffff8107798d>] tasklet_action+0x7d/0x140
  [<ffffffff81077b3f>] __do_softirq+0xef/0x280
  [<ffffffff81615c9c>] call_softirq+0x1c/0x30
  [<ffffffff81015d95>] do_softirq+0x65/0xa0
  [<ffffffff81077ed5>] irq_exit+0x115/0x120
  [<ffffffff81616838>] do_IRQ+0x58/0xf0
  [<ffffffff8160baed>] common_interrupt+0x6d/0x6d
  <EOI>  [<ffffffff810d07cc>] ? tick_nohz_idle_exit+0xcc/0x150
  [<ffffffff810d081d>] ? tick_nohz_idle_exit+0x11d/0x150
  [<ffffffff810c6a75>] cpu_startup_entry+0x245/0x290
  [<ffffffff8104228a>] start_secondary+0x1ba/0x230