Kernel Panic BUG: unable to handle kernel NULL pointer dereference at (null) which has Solarflare OpenOnload (onload) module installed

Issue

• server panicked with error Kernel Panic BUG: unable to handle kernel NULL pointer dereference at (null)
• kernel found to be panicked at this instruction pointer - oo_file_ref_drop+120

ID: 56281  TASK: ffff882011ca9500  CPU: 17  COMMAND: "ux_router"
 #0 [ffff880c6b4098d0] machine_kexec at ffffffff81038ecb
 #1 [ffff880c6b409930] crash_kexec at ffffffff810c5ad2
 #2 [ffff880c6b409a00] oops_end at ffffffff8152cec0
 #3 [ffff880c6b409a30] no_context at ffffffff8104a00b
 #4 [ffff880c6b409a80] __bad_area_nosemaphore at ffffffff8104a295
 #5 [ffff880c6b409ad0] bad_area at ffffffff8104a3be
 #6 [ffff880c6b409b00] __do_page_fault at ffffffff8104ab6f
 #7 [ffff880c6b409c20] do_page_fault at ffffffff8152ee0e
 #8 [ffff880c6b409c50] page_fault at ffffffff8152c1c5
    [exception RIP: oo_file_ref_drop+120]                         
    RIP: ffffffffa024a868  RSP: ffff880c6b409d08  RFLAGS: 00010246
    RAX: 0000000000000000  RBX: 0000000000000000  RCX: 00000000ffffffff
    RDX: 0000000000000244  RSI: 00000000ffffffff  RDI: 0000000000000000
    RBP: ffff880c6b409d18   R8: 00000000400c5a14   R9: 0000000000000000
    R10: 000000000000072a  R11: 0000000000000004  R12: 0000000000000000
    R13: 0000000000000011  R14: 0000000000000140  R15: 00000000ffffffff
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #9 [ffff880c6b409d20] tcp_helper_endpoint_set_filters at ffffffffa023656a [onload]  
#10 [ffff880c6b409d90] efab_ep_filter_set at ffffffffa023f0f2 [onload]
#11 [ffff880c6b409da0] oo_fop_unlocked_ioctl at ffffffffa022172d [onload]
#12 [ffff880c6b409e60] vfs_ioctl at ffffffff8119e642
#13 [ffff880c6b409ea0] do_vfs_ioctl at ffffffff8119e7e4
#14 [ffff880c6b409f30] sys_ioctl at ffffffff8119ed61