crash> blk_mq_hw_ctx 0xffff880e528f8aa8
struct blk_mq_hw_ctx {
  {
    lock = {
      {
        rlock = {
          raw_lock = {
            val = {
              counter = 0
            }
          }
        }
      }
    },
    dispatch = {
      next = 0xffff880e528f8ab0,
      prev = 0xffff880e528f8ab0
    }
  },
  state = 2,
  run_work = {
    work = {
      data = {
        counter = 224
      },
      entry = {
        next = 0xffff880e528f8af8,
        prev = 0xffff880e528f8af8
      },
      func = 0xffffffff81338d30 <blk_mq_run_work_fn>
    },
    timer = {
      entry = {
        next = 0x0,
        pprev = 0x0
      },
      expires = 0,
      function = 0xffffffff810a0520 <delayed_work_timer_fn>,
      data = 18446612193828899568,
      flags = 2097183,
      start_pid = -1,
      start_site = 0x0,
      start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
    },
    wq = 0x0,
    cpu = 0
  },
  delay_work = {
    work = {
      data = {
        counter = 68719476704
      },
      entry = {
        next = 0xffff880e528f8b70,
        prev = 0xffff880e528f8b70
      },
      func = 0xffffffff81338d00 <blk_mq_delay_work_fn>
    },
    timer = {
      entry = {
        next = 0x0,
        pprev = 0x0
      },
      expires = 0,
      function = 0xffffffff810a0520 <delayed_work_timer_fn>,
      data = 18446612193828899688,
      flags = 2097183,
      start_pid = -1,
      start_site = 0x0,
      start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
    },
    wq = 0x0,
    cpu = 0
  },
  cpumask = 0xffff880e52896db8,
  next_cpu = 3,
  next_cpu_batch = 3,
  flags = 3,
  queue = 0xffff880e52847018,
  fq = 0xffff880e52869cb8,
  driver_data = 0xffff880e55ad1318,
  ctx_map = {
    size = 1,
    bits_per_word = 8,
    map = 0xffff880e528d6a68
  },
  nr_ctx = 1,
  ctxs = 0xffff880e528d1288,
  wait_index = {
    counter = 0
  },
  tags = 0xffff880e539175a8,
  queued = 18746,
  run = 18750,
  dispatched = {7, 18741, 0, 1, 0, 0, 0, 0, 0, 0},
  numa_node = 0,
  queue_num = 3,
  nr_active = {
    counter = 1
  },
  cpu_notifier = {
    list = {
      next = 0xffff880e528f9200,
      prev = 0xffff880e52917c40
    },
    data = 0xffff880e528f8aa8,
    notify = 0xffffffff81339160 <blk_mq_hctx_notify>
  },
  kobj = {
    name = 0xffff880e52981180 "3",
    entry = {
      next = 0xffff880e528f8cd8,
      prev = 0xffff880e528f8cd8
    },
    parent = 0xffff880e528475d0,
    kset = 0x0,
    ktype = 0xffffffff81cd3020 <blk_mq_hw_ktype>,
    sd = 0xffff880e55aed010,
    kref = {
      refcount = {
        counter = 2
      }
    },
    state_initialized = 1,
    state_in_sysfs = 1,
    state_add_uevent_sent = 0,
    state_remove_uevent_sent = 0,
    uevent_suppress = 0
  },
  poll_invoked = 0,
  poll_success = 0
}
crash> blk_mq_hw_ctx.driver_data 0xffff880e528f8aa8
  driver_data = 0xffff880e55ad1318
crash> nvme_rdma_queue 0xffff880e55ad1318
struct nvme_rdma_queue {
  rsp_ring = 0xffff880e55bb67e8,
  sig_count = 60 '<',
  queue_size = 128,
  cmnd_capsule_len = 4160,
  ctrl = 0xffff880f4fc1a548,
  device = 0xffff880fce43bcf8,
  ib_cq = 0xffff880e55b86018,
  qp = 0xffff880e3bfd5a58,
  flags = 16,
  cm_id = 0xffff880e3bfd6a48,
  cm_error = 0,
  cm_done = {
    done = 0,
    wait = {
      lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      task_list = {
        next = 0xffff880e55ad1378,
        prev = 0xffff880e55ad1378
      }
    }
  }
}
crash> nvme_rdma_ctrl 0xffff880f4fc1a548
struct nvme_rdma_ctrl {
  lock = {
    {
      rlock = {
        raw_lock = {
          val = {
            counter = 0
          }
        }
      }
    }
  },
  queues = 0xffff880e55ad1158,
  queue_count = 33,
  tag_set = {
    ops = 0xffffffffa0649180 <nvme_rdma_mq_ops>,
    nr_hw_queues = 32,
    queue_depth = 128,
    reserved_tags = 1,
    cmd_size = 4264,
    numa_node = -1,
    timeout = 30000,
    flags = 3,
    driver_data = 0xffff880f4fc1a548,
    tags = 0xffff880e55b24318,
    tag_list_lock = {
      count = {
        counter = 1
      },
      wait_lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      wait_list = {
        next = 0xffff880f4fc1a5a0,
        prev = 0xffff880f4fc1a5a0
      },
      owner = 0x0,
      osq = {
        tail = {
          counter = 0
        }
      }
    },
    tag_list = {
      next = 0xffff880e528408c8,
      prev = 0xffff880e528478d8
    }
  },
  delete_work = {
    data = {
      counter = 68719476704
    },
    entry = {
      next = 0xffff880f4fc1a5d8,
      prev = 0xffff880f4fc1a5d8
    },
    func = 0xffffffffa0645290 <nvme_rdma_del_ctrl_work>
  },
  reset_work = {
    data = {
      counter = 68719476704
    },
    entry = {
      next = 0xffff880f4fc1a5f8,
      prev = 0xffff880f4fc1a5f8
    },
    func = 0xffffffffa0646c60 <nvme_rdma_reset_ctrl_work>
  },
  err_work = {
    data = {
      counter = 192
    },
    entry = {
      next = 0xffff880f4fc1a618,
      prev = 0xffff880f4fc1a618
    },
    func = 0xffffffffa06452b0 <nvme_rdma_error_recovery_work>
  },
  async_event_sqe = {
    cqe = {
      done = 0xffffffffa0644590 <nvme_rdma_send_done>
    },
    data = 0xffff880e55ba63f8,
    dma = 61567820792
  },
  reconnect_delay = 10,
  reconnect_work = {
    work = {
      data = {
        counter = 192
      },
      entry = {
        next = 0xffff880f4fc1a658,
        prev = 0xffff880f4fc1a658
      },
      func = 0xffffffffa0645990 <nvme_rdma_reconnect_ctrl_work>
    },
    timer = {
      entry = {
        next = 0xdead000000000200,
        pprev = 0x0
      },
      expires = 4295929065,
      function = 0xffffffff810a0520 <delayed_work_timer_fn>,
      data = 18446612198076819024,
      flags = 903872515,
      start_pid = -1,
      start_site = 0x0,
      start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
    },
    wq = 0xffff880e572ab858,
    cpu = 8192
  },
  list = {
    next = 0xffff881003b4b968,
    prev = 0xffff880f4fc18ad8
  },
  admin_tag_set = {
    ops = 0xffffffffa06490e0 <nvme_rdma_admin_mq_ops>,
    nr_hw_queues = 1,
    queue_depth = 31,
    reserved_tags = 2,
    cmd_size = 4264,
    numa_node = -1,
    timeout = 60000,
    flags = 0,
    driver_data = 0xffff880f4fc1a548,
    tags = 0xffff880e55b23538,
    tag_list_lock = {
      count = {
        counter = 1
      },
      wait_lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      wait_list = {
        next = 0xffff880f4fc1a718,
        prev = 0xffff880f4fc1a718
      },
      owner = 0x0,
      osq = {
        tail = {
          counter = 0
        }
      }
    },
    tag_list = {
      next = 0xffff880f4d4a45e8,
      prev = 0xffff880f4d4a45e8
    }
  },
  device = 0xffff880fce43bcf8,
  cap = 137690612735,
  max_fr_pages = 32,
  {
    addr = {
      sa_family = 2,
      sa_data = "\021D\n\000\001\016\000\000\000\000\000\000\000"
    },
    addr_in = {
      sin_family = 2,
      sin_port = 17425,
      sin_addr = {
        s_addr = 234946570
      },
      __pad = "\000\000\000\000\000\000\000"
    }
  },
  ctrl = {
    state = NVME_CTRL_RECONNECTING,
    lock = {
      {
        rlock = {
          raw_lock = {
            val = {
              counter = 0
            }
          }
        }
      }
    },
    ops = 0xffffffffa06480c0 <nvme_rdma_ctrl_ops>,
    admin_q = 0xffff880f4d4a3d28,
    connect_q = 0xffff880e52840008,
    dev = 0xffff880f49ccba78,
    kref = {
      refcount = {
        counter = 2
      }
    },
    instance = 2,
    tagset = 0xffff880f4fc1a560,
    namespaces = {
      next = 0xffff881003aa7668,
      prev = 0xffff881003aa7668
    },
    namespaces_mutex = {
      count = {
        counter = 1
      },
      wait_lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      wait_list = {
        next = 0xffff880f4fc1a7c0,
        prev = 0xffff880f4fc1a7c0
      },
      owner = 0x0,
      osq = {
        tail = {
          counter = 0
        }
      }
    },
    device = 0xffff880e55b08ff8,
    node = {
      next = 0xffff881003b4ba88,
      prev = 0xffff880f4fc18bf8
    },
    ns_ida = {
      idr = {
        hint = 0x0,
        top = 0xffff880e528f0988,
        layers = 1,
        cur = 0,
        lock = {
          {
            rlock = {
              raw_lock = {
                val = {
                  counter = 0
                }
              }
            }
          }
        },
        id_free_cnt = 6,
        id_free = 0xffff880e528f0008
      },
      free_bitmap = 0x0
    },
    name = "\000\000\000\000\000\000\000\000\000\000\000",
    serial = "d5014fad648a0b4e\000   ",
    model = "Linux\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
    firmware_rev = "4.8.0-rc",
    cntlid = 2,
    ctrl_config = 4587521,
    page_size = 4096,
    max_hw_sectors = 248,
    stripe_size = 0,
    oncs = 4,
    vid = 0,
    abort_limit = {
      counter = 4
    },
    event_limit = 0 '\000',
    vwc = 1 '\001',
    vs = 66049,
    sgls = 1048581,
    kas = 10,
    kato = 5,
    subsystem = false,
    quirks = 0,
    scan_work = {
      data = {
        counter = 128
      },
      entry = {
        next = 0xffff880f4fc1a8c0,
        prev = 0xffff880f4fc1a8c0
      },
      func = 0xffffffffa0273220
    },
    async_event_work = {
      data = {
        counter = 128
      },
      entry = {
        next = 0xffff880f4fc1a8e0,
        prev = 0xffff880f4fc1a8e0
      },
      func = 0xffffffffa0272500
    },
    ka_work = {
      work = {
        data = {
          counter = 68719476705
        },
        entry = {
          next = 0xffff880f4fc1a900,
          prev = 0xffff880f4fc1a900
        },
        func = 0xffffffffa0271020
      },
      timer = {
        entry = {
          next = 0xffff880e4a407398,
          pprev = 0xffff881036ed0808
        },
        expires = 4295935246,
        function = 0xffffffff810a0520 <delayed_work_timer_fn>,
        data = 18446612198076819704,
        flags = 954204163,
        start_pid = -1,
        start_site = 0x0,
        start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      },
      wq = 0xffff88103693f0a8,
      cpu = 8192
    },
    sqsize = 127,
    ioccsz = 260,
    iorcsz = 1,
    icdoff = 0,
    maxcmd = 1024,
    opts = 0xffff880e55b06d98
  }
}
crash> bt
PID: 10970  TASK: ffff880fcfa88040  CPU: 3   COMMAND: "kworker/3:1H"
 #0 [ffff880fce02b6e0] machine_kexec at ffffffff8105fbd0
 #1 [ffff880fce02b750] __crash_kexec at ffffffff81116998
 #2 [ffff880fce02b820] crash_kexec at ffffffff81116a6d
 #3 [ffff880fce02b850] oops_end at ffffffff81032bd6
 #4 [ffff880fce02b880] no_context at ffffffff8106e471
 #5 [ffff880fce02b8d0] __bad_area_nosemaphore at ffffffff8106e650
 #6 [ffff880fce02b930] bad_area_nosemaphore at ffffffff8106e734
 #7 [ffff880fce02b940] __do_page_fault at ffffffff8106ec1c
 #8 [ffff880fce02b9c0] do_page_fault at ffffffff8106f097
 #9 [ffff880fce02ba00] page_fault at ffffffff816e4e48
    [exception RIP: nvme_rdma_post_send+131]
    RIP: ffffffffa0644233  RSP: ffff880fce02bab8  RFLAGS: 00010246
    RAX: 0000000000000000  RBX: ffff880e55ad1318  RCX: 0000000000000001
    RDX: ffff880fce02bae0  RSI: ffff880fce02bab8  RDI: ffff880e3bfd5a58
    RBP: ffff880fce02baf8   R8: ffff880fce02bab8   R9: 0000000000000001
    R10: 00000000000006bc  R11: 0000000000000001  R12: ffff880e55ad1318
    R13: ffff880e529022c8  R14: ffff880fce055698  R15: ffff880e5282ddb8
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
#10 [ffff880fce02bb00] nvme_rdma_queue_rq at ffffffffa0645d28 [nvme_rdma]
#11 [ffff880fce02bb50] __blk_mq_run_hw_queue at ffffffff81338b1b
#12 [ffff880fce02bca0] blk_mq_run_work_fn at ffffffff81338d42
#13 [ffff880fce02bcb0] process_one_work at ffffffff810a1613
#14 [ffff880fce02bd90] worker_thread at ffffffff810a22ad
#15 [ffff880fce02bec0] kthread at ffffffff810a6dec
#16 [ffff880fce02bf50] ret_from_fork at ffffffff816e3bbf
crash> nvme_rdma_request ffff880e529022c8
struct nvme_rdma_request {
  mr = 0xffff880e528e39c8,
  sqe = {
    cqe = {
      done = 0xffffffffa0644590 <nvme_rdma_send_done>
    },
    data = 0xffff880e5282ddb8,
    dma = 61513850296
  },
  sge = {{
      addr = 61513850296,
      length = 64,
      lkey = 0
    }, {
      addr = 0,
      length = 0,
      lkey = 0
    }},
  num_sge = 1,
  nents = 0,
  inline_data = false,
  reg_wr = {
    wr = {
      next = 0x0,
      {
        wr_id = 0,
        wr_cqe = 0x0
      },
      sg_list = 0x0,
      num_sge = 0,
      opcode = IB_WR_RDMA_WRITE,
      send_flags = 0,
      ex = {
        imm_data = 0,
        invalidate_rkey = 0
      }
    },
    mr = 0x0,
    key = 0,
    access = 0
  },
  reg_cqe = {
    done = 0x0
  },
  queue = 0xffff880e55ad1318,
  sg_table = {
    sgl = 0x0,
    nents = 0,
    orig_nents = 0
  },
  first_sgl = 0xffff880e52902370
}
crash> gdb p (struct request *)0xffff880e529022c8 - 1
$1 = (struct request *) 0xffff880e52902158
crash> request 0xffff880e52902158
struct request {
  queuelist = {
    next = 0xffff880e52902158,
    prev = 0xffff880e52902158
  },
  {
    csd = {
      llist = {
        next = 0x0
      },
      func = 0x0,
      info = 0x0,
      flags = 0
    },
    fifo_time = 0
  },
  q = 0xffff880e52847018,
  mq_ctx = 0xffffe8ffff6c6100,
  cpu = -1,
  cmd_type = 1,
  cmd_flags = 11529215046085247560,
  atomic_flags = 2,
  __data_len = 0,
  __sector = 18446744073709551615,
  bio = 0x0,
  biotail = 0x0,
  {
    hash = {
      next = 0x0,
      pprev = 0x0
    },
    ipi_list = {
      next = 0x0,
      prev = 0x0
    }
  },
  {
    rb_node = {
      __rb_parent_color = 18446612193828938208,
      rb_right = 0x0,
      rb_left = 0x0
    },
    completion_data = 0xffff880e529021e0
  },
  {
    elv = {
      icq = 0x0,
      priv = {0x0, 0x0}
    },
    flush = {
      seq = 0,
      list = {
        next = 0x0,
        prev = 0x0
      },
      saved_end_io = 0x0
    }
  },
  rq_disk = 0xffff880f4fc1dd28,
  part = 0x0,
  start_time = 4295930244,
  rl = 0x0,
  start_time_ns = 1263373613019,
  io_start_time_ns = 0,
  nr_phys_segments = 0,
  nr_integrity_segments = 0,
  ioprio = 0,
  special = 0x0,
  tag = 119,
  errors = 0,
  __cmd = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
  cmd = 0xffff880e52902260 "",
  cmd_len = 16,
  extra_len = 0,
  sense_len = 0,
  resid_len = 0,
  sense = 0x0,
  deadline = 4295960254,
  timeout_list = {
    next = 0xffff880e52902298,
    prev = 0xffff880e52902298
  },
  timeout = 30000,
  retries = 0,
  end_io = 0xffffffff81332310 <flush_end_io>,
  end_io_data = 0x0,
  next_rq = 0x0
}
crash> request.q 0xffff880e52902158
  q = 0xffff880e52847018
crash> request_queue 0xffff880e52847018
struct request_queue {
  queue_head = {
    next = 0xffff880e52847018,
    prev = 0xffff880e52847018
  },
  last_merge = 0x0,
  elevator = 0x0,
  nr_rqs = {0, 0},
  nr_rqs_elvpriv = 0,
  root_rl = {
    q = 0x0,
    blkg = 0xffff880e52faf4e8,
    count = {0, 0},
    starved = {0, 0},
    rq_pool = 0x0,
    wait = {{
        lock = {
          {
            rlock = {
              raw_lock = {
                val = {
                  counter = 0
                }
              }
            }
          }
        },
        task_list = {
          next = 0x0,
          prev = 0x0
        }
      }, {
        lock = {
          {
            rlock = {
              raw_lock = {
                val = {
                  counter = 0
                }
              }
            }
          }
        },
        task_list = {
          next = 0x0,
          prev = 0x0
        }
      }},
    flags = 0
  },
  request_fn = 0x0,
  make_request_fn = 0xffffffff8133b730 <blk_mq_make_request>,
  prep_rq_fn = 0x0,
  unprep_rq_fn = 0x0,
  softirq_done_fn = 0xffffffffa0644950 <nvme_rdma_complete_rq>,
  rq_timed_out_fn = 0x0,
  dma_drain_needed = 0x0,
  lld_busy_fn = 0x0,
  mq_ops = 0xffffffffa0649180 <nvme_rdma_mq_ops>,
  mq_map = 0xffff881003aa6448,
  queue_ctx = 0x60efc8806100,
  nr_queues = 32,
  queue_hw_ctx = 0xffff880e528d73a8,
  nr_hw_queues = 32,
  end_sector = 0,
  boundary_rq = 0x0,
  delay_work = {
    work = {
      data = {
        counter = 68719476704
      },
      entry = {
        next = 0xffff880e52847130,
        prev = 0xffff880e52847130
      },
      func = 0xffffffff8132c300 <blk_delay_work>
    },
    timer = {
      entry = {
        next = 0x0,
        pprev = 0x0
      },
      expires = 0,
      function = 0xffffffff810a0520 <delayed_work_timer_fn>,
      data = 18446612193828172072,
      flags = 2097183,
      start_pid = -1,
      start_site = 0x0,
      start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
    },
    wq = 0x0,
    cpu = 0
  },
  backing_dev_info = {
    bdi_list = {
      next = 0xffff880e528415f0,
      prev = 0xffff880f4d4a3480
    },
    ra_pages = 32,
    capabilities = 32,
    congested_fn = 0x0,
    congested_data = 0x0,
    name = 0xffffffff81a6b84f "block",
    min_ratio = 0,
    max_ratio = 100,
    max_prop_frac = 1024,
    tot_write_bandwidth = {
      counter = 0
    },
    wb = {
      bdi = 0xffff880e528471a0,
      state = 1,
      last_old_flush = 4295842616,
      b_dirty = {
        next = 0xffff880e52847208,
        prev = 0xffff880e52847208
      },
      b_io = {
        next = 0xffff880e52847218,
        prev = 0xffff880e52847218
      },
      b_more_io = {
        next = 0xffff880e52847228,
        prev = 0xffff880e52847228
      },
      b_dirty_time = {
        next = 0xffff880e52847238,
        prev = 0xffff880e52847238
      },
      list_lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      stat = {{
          lock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          },
          count = 0,
          list = {
            next = 0xffff880e52847340,
            prev = 0xffff880e52847288
          },
          counters = 0x60efc88056a0
        }, {
          lock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          },
          count = 0,
          list = {
            next = 0xffff880e52847260,
            prev = 0xffff880e528472b0
          },
          counters = 0x60efc88056a4
        }, {
          lock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          },
          count = 0,
          list = {
            next = 0xffff880e52847288,
            prev = 0xffff880e528472d8
          },
          counters = 0x60efc88056a8
        }, {
          lock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          },
          count = 0,
          list = {
            next = 0xffff880e528472b0,
            prev = 0xffff880e52faf5a0
          },
          counters = 0x60efc88056ac
        }},
      congested = 0xffff880e5282e268,
      bw_time_stamp = 4295842616,
      dirtied_stamp = 0,
      written_stamp = 0,
      write_bandwidth = 25600,
      avg_write_bandwidth = 25600,
      dirty_ratelimit = 25600,
      balanced_dirty_ratelimit = 25600,
      completions = {
        events = {
          lock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          },
          count = 0,
          list = {
            next = 0xffff880e52fa8748,
            prev = 0xffff880e52847260
          },
          counters = 0x60efc880569c
        },
        period = 0,
        lock = {
          raw_lock = {
            val = {
              counter = 0
            }
          }
        }
      },
      dirty_exceeded = 0,
      work_lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      work_list = {
        next = 0xffff880e52847368,
        prev = 0xffff880e52847368
      },
      dwork = {
        work = {
          data = {
            counter = 68719476704
          },
          entry = {
            next = 0xffff880e52847380,
            prev = 0xffff880e52847380
          },
          func = 0xffffffff8125d270 <wb_workfn>
        },
        timer = {
          entry = {
            next = 0x0,
            pprev = 0x0
          },
          expires = 0,
          function = 0xffffffff810a0520 <delayed_work_timer_fn>,
          data = 18446612193828172664,
          flags = 2097183,
          start_pid = -1,
          start_site = 0x0,
          start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        },
        wq = 0x0,
        cpu = 0
      },
      bdi_node = {
        next = 0xffff880e528474b8,
        prev = 0xffff880e528474b8
      },
      refcnt = {
        count = {
          counter = 0
        },
        percpu_count_ptr = 0,
        release = 0x0,
        confirm_switch = 0x0,
        force_atomic = false,
        rcu = {
          next = 0x0,
          func = 0x0
        }
      },
      memcg_completions = {
        events = {
          lock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          },
          count = 0,
          list = {
            next = 0x0,
            prev = 0x0
          },
          counters = 0x0
        },
        period = 0,
        lock = {
          raw_lock = {
            val = {
              counter = 0
            }
          }
        }
      },
      memcg_css = 0xffff881036854a88,
      blkcg_css = 0xffffffff82253440 <blkcg_root>,
      memcg_node = {
        next = 0x0,
        prev = 0x0
      },
      blkcg_node = {
        next = 0x0,
        prev = 0x0
      },
      {
        release_work = {
          data = {
            counter = 0
          },
          entry = {
            next = 0x0,
            prev = 0x0
          },
          func = 0x0
        },
        rcu = {
          next = 0x0,
          func = 0x0
        }
      }
    },
    wb_list = {
      next = 0xffff880e528473f0,
      prev = 0xffff880e528473f0
    },
    cgwb_tree = {
      gfp_mask = 34078752,
      rnode = 0x0
    },
    cgwb_congested_tree = {
      rb_node = 0xffff880e5282e288
    },
    usage_cnt = {
      counter = 1
    },
    wb_waitq = {
      lock = {
        {
          rlock = {
            raw_lock = {
              val = {
                counter = 0
              }
            }
          }
        }
      },
      task_list = {
        next = 0xffff880e528474f0,
        prev = 0xffff880e528474f0
      }
    },
    dev = 0xffff880e52912a88,
    owner = 0xffff880f4fc1dd98,
    laptop_mode_wb_timer = {
      entry = {
        next = 0x0,
        pprev = 0x0
      },
      expires = 0,
      function = 0xffffffff811a55c0 <laptop_mode_timer_fn>,
      data = 18446612193828171800,
      flags = 31,
      start_pid = -1,
      start_site = 0x0,
      start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
    },
    debug_dir = 0xffff880f7cdee528,
    debug_stats = 0xffff8810145fd4a8
  },
  queuedata = 0xffff881003aa7668,
  queue_flags = 32537092,
  id = 25,
  bounce_gfp = 37748736,
  __queue_lock = {
    {
      rlock = {
        raw_lock = {
          val = {
            counter = 0
          }
        }
      }
    }
  },
  queue_lock = 0xffff880e52847580,
  kobj = {
    name = 0xffffffff81a5adda "queue",
    entry = {
      next = 0xffff880e52847598,
      prev = 0xffff880e52847598
    },
    parent = 0xffff880f4fc1dda8,
    kset = 0x0,
    ktype = 0xffffffff81cd2ac0 <blk_queue_ktype>,
    sd = 0xffff880e529bd010,
    kref = {
      refcount = {
        counter = 2
      }
    },
    state_initialized = 1,
    state_in_sysfs = 1,
    state_add_uevent_sent = 0,
    state_remove_uevent_sent = 0,
    uevent_suppress = 0
  },
  mq_kobj = {
    name = 0xffffffff81a6c68c "mq",
    entry = {
      next = 0xffff880e528475d8,
      prev = 0xffff880e528475d8
    },
    parent = 0xffff880f4fc1dda8,
    kset = 0x0,
    ktype = 0xffffffff81cd2fa0 <blk_mq_ktype>,
    sd = 0xffff880e529cc8f0,
    kref = {
      refcount = {
        counter = 33
      }
    },
    state_initialized = 1,
    state_in_sysfs = 1,
    state_add_uevent_sent = 0,
    state_remove_uevent_sent = 0,
    uevent_suppress = 0
  },
  integrity = {
    profile = 0x0,
    flags = 0 '\000',
    tuple_size = 0 '\000',
    interval_exp = 0 '\000',
    tag_size = 0 '\000'
  },
  dev = 0x0,
  rpm_status = 0,
  nr_pending = 0,
  nr_requests = 128,
  nr_congestion_on = 113,
  nr_congestion_off = 103,
  nr_batching = 32,
  dma_drain_size = 0,
  dma_drain_buffer = 0x0,
  dma_pad_mask = 0,
  dma_alignment = 511,
  queue_tags = 0x0,
  tag_busy_list = {
    next = 0x0,
    prev = 0x0
  },
  nr_sorted = 0,
  in_flight = {0, 0},
  request_fn_active = 0,
  rq_timeout = 30000,
  timeout = {
    entry = {
      next = 0x0,
      pprev = 0xffff881036f10810
    },
    expires = 4295935988,
    function = 0xffffffff81329a90 <blk_rq_timed_out_timer>,
    data = 18446612193828171800,
    flags = 956301316,
    start_pid = -1,
    start_site = 0x0,
    start_comm = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
  },
  timeout_work = {
    data = {
      counter = 160
    },
    entry = {
      next = 0xffff880e528476d8,
      prev = 0xffff880e528476d8
    },
    func = 0xffffffff81337ea0 <blk_mq_timeout_work>
  },
  timeout_list = {
    next = 0xffff880e528476f0,
    prev = 0xffff880e528476f0
  },
  icq_list = {
    next = 0xffff880e52847700,
    prev = 0xffff880e52847700
  },
  blkcg_pols = {1},
  root_blkg = 0xffff880e52faf4e8,
  blkg_list = {
    next = 0xffff880e52faf4f0,
    prev = 0xffff880e52faf4f0
  },
  limits = {
    bounce_pfn = 4503599627370495,
    seg_boundary_mask = 4294967295,
    virt_boundary_mask = 4095,
    max_hw_sectors = 248,
    max_dev_sectors = 0,
    chunk_sectors = 0,
    max_sectors = 248,
    max_segment_size = 65536,
    physical_block_size = 512,
    alignment_offset = 0,
    io_min = 512,
    io_opt = 0,
    max_discard_sectors = 4294967295,
    max_hw_discard_sectors = 4294967295,
    max_write_same_sectors = 0,
    discard_granularity = 512,
    discard_alignment = 512,
    logical_block_size = 512,
    max_segments = 32,
    max_integrity_segments = 0,
    misaligned = 0 '\000',
    discard_misaligned = 0 '\000',
    cluster = 1 '\001',
    discard_zeroes_data = 0 '\000',
    raid_partial_stripes_expensive = 0 '\000'
  },
  sg_timeout = 0,
  sg_reserved_size = 2147483647,
  node = -1,
  blk_trace = 0x0,
  fq = 0x0,
  requeue_list = {
    next = 0xffff880e528477b0,
    prev = 0xffff880e528477b0
  },
  requeue_lock = {
    {
      rlock = {
        raw_lock = {
          val = {
            counter = 0
          }
        }
      }
    }
  },
  requeue_work = {
    data = {
      counter = 352
    },
    entry = {
      next = 0xffff880e528477d0,
      prev = 0xffff880e528477d0
    },
    func = 0xffffffff8133a1b0 <blk_mq_requeue_work>
  },
  sysfs_lock = {
    count = {
      counter = 1
    },
    wait_lock = {
      {
        rlock = {
          raw_lock = {
            val = {
              counter = 0
            }
          }
        }
      }
    },
    wait_list = {
      next = 0xffff880e528477f0,
      prev = 0xffff880e528477f0
    },
    owner = 0x0,
    osq = {
      tail = {
        counter = 0
      }
    }
  },
  bypass_depth = 0,
  mq_freeze_depth = {
    counter = 0
  },
  bsg_job_fn = 0x0,
  bsg_job_size = 0,
  bsg_dev = {
    class_dev = 0x0,
    parent = 0x0,
    minor = 0,
    queue = 0x0,
    ref = {
      refcount = {
        counter = 0
      }
    },
    release = 0x0
  },
  td = 0xffff880e528d0948,
  callback_head = {
    next = 0x0,
    func = 0x0
  },
  mq_freeze_wq = {
    lock = {
      {
        rlock = {
          raw_lock = {
            val = {
              counter = 0
            }
          }
        }
      }
    },
    task_list = {
      next = 0xffff880e52847878,
      prev = 0xffff880e52847878
    }
  },
  q_usage_counter = {
    count = {
      counter = -9223372036854775807
    },
    percpu_count_ptr = 106582977304240,
    release = 0xffffffff8132a3b0 <blk_queue_usage_counter_release>,
    confirm_switch = 0x0,
    force_atomic = false,
    rcu = {
      next = 0x0,
      func = 0xffffffff813729e0 <percpu_ref_switch_to_atomic_rcu>
    }
  },
  all_q_node = {
    next = 0xffff880e528412e0,
    prev = 0xffff880e528408b0
  },
  tag_set = 0xffff880f4fc1a560,
  tag_set_list = {
    next = 0xffff880f4fc1a5c0,
    prev = 0xffff880e528408c8
  },
  bio_split = 0xffff881003aa7498,
  mq_sysfs_init_done = true
}
crash>