Issue

• System crash with error "kernel BUG at block/blk-core.c:1277!":

[15301157.417282] ------------[ cut here ]------------
[15301157.418232] kernel BUG at block/blk-core.c:1277!
[15301157.419029] invalid opcode: 0000 [#1] SMP 

• Backtrace present:

PID: 0      TASK: ffff880813ee16c0  CPU: 7   COMMAND: "swapper/7"
 #0 [ffff88081fae3ac8] machine_kexec at ffffffff8104c4cb
 #1 [ffff88081fae3b28] crash_kexec at ffffffff810e1fe2
 #2 [ffff88081fae3bf8] oops_end at ffffffff8160c588
 #3 [ffff88081fae3c20] die at ffffffff8101736b
 #4 [ffff88081fae3c50] do_trap at ffffffff8160bc60
 #5 [ffff88081fae3ca0] do_invalid_op at ffffffff810141c4
 #6 [ffff88081fae3d50] invalid_op at ffffffff816154de
    [exception RIP: blk_requeue_request+154]
    RIP: ffffffff812a9eca  RSP: ffff88081fae3e08  RFLAGS: 00010006
    RAX: ffff8808122aa5d8  RBX: ffff881013214800  RCX: dead000000200200
    RDX: ffff8808122aa5d8  RSI: ffff8808122aa488  RDI: ffff8808122aa5d8
    RBP: ffff88081fae3e20   R8: ffff8808122aa5d8   R9: ffff88100abf5028
    R10: ffff881014729000  R11: 00000000000024c5  R12: ffff8808122aa488
    R13: ffff88100ed7f620  R14: 0000000000000202  R15: 0000000000000001
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #7 [ffff88081fae3e00] blk_requeue_request at ffffffff812a9e4c
 #8 [ffff88081fae3e28] __scsi_queue_insert at ffffffff813f94ca
 #9 [ffff88081fae3e70] scsi_softirq_done at ffffffff813f96a2
#10 [ffff88081fae3ea0] blk_done_softirq at ffffffff812b3cb0
#11 [ffff88081fae3ee0] __do_softirq at ffffffff81077b2f
#12 [ffff88081fae3f50] call_softirq at ffffffff816156dc
#13 [ffff88081fae3f68] do_softirq at ffffffff81015d95
#14 [ffff88081fae3f88] irq_exit at ffffffff81077ec5
#15 [ffff88081fae3fa0] smp_call_function_single_interrupt at ffffffff81041915
#16 [ffff88081fae3fb0] call_function_single_interrupt at ffffffff81614e9d