System crash coming out of blk_queue_bio() with oracleafd driver in use

Issue

• System crash coming out of blk_queue_bio() with oracleafd driver in use:

PID: 8383   TASK: ffff97698e0562a0  CPU: 17  COMMAND: "ora_ckpt_cdb155"
 #0 [ffff976984e67500] machine_kexec at ffffffff9d066254
 #1 [ffff976984e67560] __crash_kexec at ffffffff9d122ea2
 #2 [ffff976984e67630] crash_kexec at ffffffff9d122f90
 #3 [ffff976984e67648] oops_end at ffffffff9d78a798
 #4 [ffff976984e67670] no_context at ffffffff9d075d74
 #5 [ffff976984e676c0] __bad_area_nosemaphore at ffffffff9d076042
 #6 [ffff976984e67710] bad_area_nosemaphore at ffffffff9d076164
 #7 [ffff976984e67720] __do_page_fault at ffffffff9d78d750
 #8 [ffff976984e67790] do_page_fault at ffffffff9d78d975
 #9 [ffff976984e677c0] page_fault at ffffffff9d789778
    [exception RIP: get_request+236]
    RIP: ffffffff9d35332c  RSP: ffff976984e67870  RFLAGS: 00010082
    RAX: 0000000000000000  RBX: ffff9780c4e089c0  RCX: 0000000000000018
    RDX: ffff976ac9104220  RSI: 0000000000000010  RDI: ffffffff9dcd65e0
    RBP: ffff976984e67918   R8: 0000000000000005   R9: 0000000000000000
    R10: ffff97676c4ddb40  R11: 0000000000000007  R12: 0000000000000003
    R13: ffff976ac9104220  R14: 0000000000000000  R15: ffff9780c4e089c0
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
#10 [ffff976984e67920] blk_queue_bio at ffffffff9d3561be
#11 [ffff976984e67970] safd_bio_submit at ffffffffc0907d59 [oracleafd]
#12 [ffff976984e679c0] afdq_batch_submit at ffffffffc08fd1f6 [oracleafd]
#13 [ffff976984e67ad0] afdc_io at ffffffffc08ee0f3 [oracleafd]
#14 [ffff976984e67b88] afdc_dispatch_ioctl at ffffffffc08ee6ab [oracleafd]
#15 [ffff976984e67c58] afdc_execute_ioctl at ffffffffc08f018c [oracleafd]
#16 [ffff976984e67dc8] afd_ioctl at ffffffffc09049ac [oracleafd]
#17 [ffff976984e67e10] blkdev_ioctl at ffffffff9d366cfa
#18 [ffff976984e67e70] block_ioctl at ffffffff9d28dd21
....