RHEL7: kernel BUG at drivers/net/ethernet/brocade/bna/bnad.c:184!

Issue

• Random system outage and reboot. The Vmcore shows the following back trace:

crash> bt
PID: 203006  TASK: ffff881f16254e70  CPU: 20  COMMAND: "proc_name"
 #0 [ffff88085f943ad0] machine_kexec at ffffffff81059cdb
 #1 [ffff88085f943b30] __crash_kexec at ffffffff81105182
 #2 [ffff88085f943c00] crash_kexec at ffffffff81105270
 #3 [ffff88085f943c18] oops_end at ffffffff8168ed88
 #4 [ffff88085f943c40] die at ffffffff8102e93b
 #5 [ffff88085f943c70] do_trap at ffffffff8168e440
 #6 [ffff88085f943cc0] do_invalid_op at ffffffff8102b144
 #7 [ffff88085f943d70] invalid_op at ffffffff81697d5e
    [exception RIP: bnad_txcmpl_process+273]
    RIP: ffffffffa015af21  RSP: ffff88085f943e20  RFLAGS: 00010002
    RAX: 000000000000078c  RBX: ffff88205ca42f00  RCX: 00000000000007ff
    RDX: 0000000000000001  RSI: ffff88205ca42f00  RDI: ffff88085d7b88c0
    RBP: ffff88085f943e68   R8: 0000000000000000   R9: ffff880187800000
    R10: 0000000000000000  R11: 0000000000000246  R12: ffff88085ae00000
    R13: 0000000000000002  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0000
 #8 [ffff88085f943e70] bnad_tx_complete at ffffffffa015d63d [bna]
 #9 [ffff88085f943ea0] bnad_msix_tx at ffffffffa015d6f2 [bna]
#10 [ffff88085f943eb0] handle_irq_event_percpu at ffffffff8113015e
#11 [ffff88085f943ef8] handle_irq_event at ffffffff8113033d
#12 [ffff88085f943f20] handle_edge_irq at ffffffff81133007
#13 [ffff88085f943f40] handle_irq at ffffffff8102d26f
#14 [ffff88085f943f78] do_IRQ at ffffffff81698aef
--- <IRQ stack> ---
#15 [ffff881a0f2eff58] ret_from_intr at ffffffff8168dc6d
    RIP: 000000000040d5c4  RSP: 00002ae45d0cfdc0  RFLAGS: 00000297
    .
    .
    ORIG_RAX: ffffffffffffff35  CS: 0033  SS: 002b
crash>