Re: [Bug 204165] New: 100% CPU usage in compact_zone_order

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I got more info/better stacktrace(seen at the end):

[ 4793.539013] sysrq: Show backtrace of all active CPUs
[ 4793.539019] NMI backtrace for cpu 8
[ 4793.539026] CPU: 8 PID: 21120 Comm: stress Kdump: loaded Tainted: G     U            5.2.1-g527a3db363a3 #68
[ 4793.539029] Hardware name: System manufacturer System Product Name/PRIME Z370-A, BIOS 1002 07/02/2018
[ 4793.539032] Call Trace:
[ 4793.539036]  <IRQ>
[ 4793.539047]  dump_stack+0x46/0x60
[ 4793.539054]  nmi_cpu_backtrace.cold+0x14/0x53
[ 4793.539061]  ? lapic_can_unplug_cpu.cold+0x42/0x42
[ 4793.539067]  nmi_trigger_cpumask_backtrace+0x8e/0x90
[ 4793.539073]  __handle_sysrq.cold+0x48/0x102
[ 4793.539078]  sysrq_filter+0x2ea/0x3b0
[ 4793.539084]  input_to_handler+0x4d/0xf0
[ 4793.539090]  input_pass_values.part.0+0x109/0x130
[ 4793.539096]  input_handle_event+0x171/0x5a0
[ 4793.539101]  input_event+0x4d/0x70
[ 4793.539107]  hidinput_report_event+0x2e/0x40
[ 4793.539112]  hid_report_raw_event+0x260/0x430
[ 4793.539118]  hid_input_report+0xfb/0x150
[ 4793.539124]  hid_irq_in+0x168/0x190
[ 4793.539131]  __usb_hcd_giveback_urb+0x77/0xe0
[ 4793.539148]  xhci_giveback_urb_in_irq.isra.0+0x62/0x90 [xhci_hcd]
[ 4793.539163]  xhci_td_cleanup+0xf7/0x140 [xhci_hcd]
[ 4793.539177]  xhci_irq+0x7e8/0x1be0 [xhci_hcd]
[ 4793.539185]  __handle_irq_event_percpu+0x2f/0xc0
[ 4793.539191]  handle_irq_event_percpu+0x2c/0x80
[ 4793.539196]  handle_irq_event+0x23/0x43
[ 4793.539202]  handle_edge_irq+0x78/0x190
[ 4793.539208]  handle_irq+0x17/0x20
[ 4793.539215]  do_IRQ+0x3e/0xd0
[ 4793.539221]  common_interrupt+0xf/0xf
[ 4793.539225]  </IRQ>
[ 4793.539231] RIP: 0010:isolate_migratepages_block+0x1d3/0xa50
[ 4793.539237] Code: df 77 27 45 84 ed 74 22 4d 85 d2 0f 85 a7 00 00 00 41 8b 44 24 60 be 01 00 00 00 c4 e2 f9 f7 c6 4c 8d 3c 18 48 f7 d8 49 21 c7 <f6> c3 1f 0f 84 ec 00 00 00 48 ff 44 24 10 48 8b 05 68 b3 d1 00 48
[ 4793.539240] RSP: 0018:ffff9cb9a9f57958 EFLAGS: 00000206 ORIG_RAX: ffffffffffffffde
[ 4793.539246] RAX: ffff9cb9a9f57b49 RBX: 00000000004b4b00 RCX: 000000000000000c
[ 4793.539249] RDX: 00000000004b4c00 RSI: 0000000000000007 RDI: 0000000000000000
[ 4793.539252] RBP: ffff8fd8cdfde000 R08: ffff8fd8cdfd9960 R09: ffff8fd8ada5d550
[ 4793.539254] R10: 0000000000000000 R11: ffff8fd8ada5cb80 R12: ffff9cb9a9f57ad0
[ 4793.539257] R13: 0000000000000001 R14: ffff9cb9a9f57ad0 R15: 00000000004b4c00
[ 4793.539264]  ? isolate_migratepages_block+0xd5/0xa50
[ 4793.539269]  compact_zone+0x577/0xa70
[ 4793.539275]  compact_zone_order+0xde/0x120
[ 4793.539280]  try_to_compact_pages+0x187/0x240
[ 4793.539286]  __alloc_pages_direct_compact+0x87/0x170
[ 4793.539291]  __alloc_pages_slowpath+0x20e/0xc20
[ 4793.539297]  ? release_pages+0x348/0x3b0
[ 4793.539303]  ? __pagevec_lru_add_fn+0x189/0x2a0
[ 4793.539307]  __alloc_pages_nodemask+0x268/0x2b0
[ 4793.539314]  do_huge_pmd_anonymous_page+0x131/0x5c0
[ 4793.539321]  __handle_mm_fault+0xc0c/0x1310
[ 4793.539327]  handle_mm_fault+0xa9/0x1d0
[ 4793.539333]  __do_page_fault+0x237/0x480
[ 4793.539339]  do_page_fault+0x1d/0x67
[ 4793.539345]  ? page_fault+0x8/0x30
[ 4793.539350]  page_fault+0x1e/0x30
[ 4793.539355] RIP: 0033:0x5879fc8c4c10
[ 4793.539360] Code: c0 0f 84 53 02 00 00 8b 54 24 0c 31 c0 85 d2 0f 94 c0 89 04 24 41 83 fd 02 0f 8f fa 00 00 00 31 c0 4d 85 ff 7e 10 0f 1f 40 00 <c6> 04 03 5a 4c 01 f0 49 39 c7 7f f4 4d 85 e4 0f 84 f4 01 00 00 7e
[ 4793.539363] RSP: 002b:00007ffd393aa0d0 EFLAGS: 00010206
[ 4793.539367] RAX: 0000000010b8a000 RBX: 0000714104876010 RCX: 0000714358a5a3db
[ 4793.539370] RDX: 0000000000000000 RSI: 00000002540bf000 RDI: 0000714104876000
[ 4793.539373] RBP: 00005879fc8c5a54 R08: 0000714104876010 R09: 0000000000000000
[ 4793.539376] R10: 0000000000000022 R11: 00000002540be400 R12: ffffffffffffffff
[ 4793.539379] R13: 0000000000000002 R14: 0000000000001000 R15: 00000002540be400
[ 4793.539385] Sending NMI from CPU 8 to CPUs 0-7,9-11:
[ 4793.539450] NMI backtrace for cpu 0 skipped: idling at intel_idle+0x7d/0x120
[ 4793.539541] NMI backtrace for cpu 1 skipped: idling at intel_idle+0x7d/0x120
[ 4793.539606] NMI backtrace for cpu 2 skipped: idling at intel_idle+0x7d/0x120
[ 4793.539815] NMI backtrace for cpu 3



crash> task 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
struct task_struct {
  thread_info = {
    flags = 2147500036,
    status = 0
  },
  state = 0,
  stack = 0xffff9cb9a9f54000,
  usage = {
    refs = {
      counter = 2
    }
  },
  flags = 20990016,
  ptrace = 0,
  wake_entry = {
    next = 0x0
  },
  on_cpu = 1,
  cpu = 4,
  wakee_flips = 0,
  wakee_flip_decay_ts = 4299663580,
  last_wakee = 0xffff8fd8a9e01e40,
  recent_used_cpu = 4,
  wake_cpu = 4,
  on_rq = 1,
  prio = 120,
  static_prio = 120,
  normal_prio = 120,
  rt_priority = 0,
  sched_class = 0xffffffff98c0f700,
  se = {
    load = {
      weight = 1048576,
      inv_weight = 4194304
    },
    runnable_weight = 1048576,
    run_node = {
      __rb_parent_color = 1,
      rb_right = 0x0,
      rb_left = 0x0
    },
    group_node = {
      next = 0xffff8fd8ad85d550,
      prev = 0xffff8fd8ad85d550
    },
    on_rq = 1,
    exec_start = 4987351794570,
    sum_exec_runtime = 275188015038,
    vruntime = 268378190293,
    prev_sum_exec_runtime = 275071762024,
    nr_migrations = 75,
    statistics = {
      wait_start = 0,
      wait_max = 0,
      wait_count = 0,
      wait_sum = 0,
      iowait_count = 0,
      iowait_sum = 0,
      sleep_start = 0,
      sleep_max = 0,
      sum_sleep_runtime = 0,
      block_start = 0,
      block_max = 0,
      exec_max = 0,
      slice_max = 0,
      nr_migrations_cold = 0,
      nr_failed_migrations_affine = 0,
      nr_failed_migrations_running = 0,
      nr_failed_migrations_hot = 0,
      nr_forced_migrations = 0,
      nr_wakeups = 0,
      nr_wakeups_sync = 0,
      nr_wakeups_migrate = 0,
      nr_wakeups_local = 0,
      nr_wakeups_remote = 0,
      nr_wakeups_affine = 0,
      nr_wakeups_affine_attempts = 0,
      nr_wakeups_passive = 0,
      nr_wakeups_idle = 0
    },
    depth = 1,
    parent = 0xffff8fd38de23000,
    cfs_rq = 0xffff8fd38de20e00,
    my_q = 0x0,
    avg = {
      last_update_time = 4987351793664,
      load_sum = 47037,
      runnable_load_sum = 47037,
      util_sum = 48192640,
      period_contrib = 320,
      load_avg = 1023,
      runnable_load_avg = 1023,
      util_avg = 1024,
      util_est = {
        enqueued = 100,
        ewma = 75
      }
    }
  },
  rt = {
    run_list = {
      next = 0xffff8fd7f10ddd00,
      prev = 0xffff8fd7f10ddd00
    },
    timeout = 0,
    watchdog_stamp = 0,
    time_slice = 100,
    on_rq = 0,
    on_list = 0,
    back = 0x0
  },
  sched_task_group = 0xffff8fd8a69f7480,
  dl = {
    rb_node = {
      __rb_parent_color = 18446620756357799224,
      rb_right = 0x0,
      rb_left = 0x0
    },
    dl_runtime = 0,
    dl_deadline = 0,
    dl_period = 0,
    dl_bw = 0,
    dl_density = 0,
    runtime = 0,
    deadline = 0,
    flags = 0,
    dl_throttled = 0,
    dl_boosted = 0,
    dl_yielded = 0,
    dl_non_contending = 0,
    dl_overrun = 0,
    dl_timer = {
      node = {
        node = {
          __rb_parent_color = 18446620756357799312,
          rb_right = 0x0,
          rb_left = 0x0
        },
        expires = 0
      },
      _softexpires = 0,
      function = 0xffffffff980dac70,
      base = 0xffff8fd8ad958b00,
      state = 0 '\000',
      is_rel = 0 '\000',
      is_soft = 0 '\000'
    },
    inactive_timer = {
      node = {
        node = {
          __rb_parent_color = 18446620756357799376,
          rb_right = 0x0,
          rb_left = 0x0
        },
        expires = 0
      },
      _softexpires = 0,
      function = 0xffffffff980d8ca0,
      base = 0xffff8fd8ad958b00,
      state = 0 '\000',
      is_rel = 0 '\000',
      is_soft = 0 '\000'
    }
  },
  policy = 0,
  nr_cpus_allowed = 12,
  cpus_allowed = {
    bits = {4095}
  },
  sched_info = {
    pcount = 927,
    run_delay = 10768613805,
    last_arrival = 4997587172423,
    last_queued = 0
  },
  tasks = {
    next = 0xffff8fd7ef4e8380,
    prev = 0xffff8fd80b12a1c0
  },
  pushable_tasks = {
    prio = 140,
    prio_list = {
      next = 0xffff8fd7f10dde58,
      prev = 0xffff8fd7f10dde58
    },
    node_list = {
      next = 0xffff8fd7f10dde68,
      prev = 0xffff8fd7f10dde68
    }
  },
  pushable_dl_tasks = {
    __rb_parent_color = 18446620756357799544,
    rb_right = 0x0,
    rb_left = 0x0
  },
  mm = 0xffff8fd84a0c0000,
  active_mm = 0xffff8fd84a0c0000,
  vmacache = {
    seqnum = 0,
    vmas = {0xffff8fd8064dcd80, 0xffff8fd188b0ce40, 0xffff8fd73833ed80, 0x0}
  },
  rss_stat = {
    events = 59,
    count = {0, 54, 0, 0}
  },
  exit_state = 0,
  exit_code = 0,
  exit_signal = 17,
  pdeath_signal = 0,
  jobctl = 0,
  personality = 0,
  sched_reset_on_fork = 0,
  sched_contributes_to_load = 1,
  sched_migrated = 0,
  sched_remote_wakeup = 0,
  sched_psi_wake_requeue = 0,
  in_execve = 0,
  in_iowait = 0,
  restore_sigmask = 0,
  in_user_fault = 1,
  no_cgroup_migration = 0,
  frozen = 0,
  use_memdelay = 0,
  atomic_flags = 0,
  restart_block = {
    fn = 0xffffffff980a97b0,
    {
      futex = {
        uaddr = 0x791b80,
        val = 0,
        flags = 0,
        bitset = 30,
        time = 685393978,
        uaddr2 = 0x0
      },
      nanosleep = {
        clockid = 7936896,
        type = TT_NONE,
        {
          rmtp = 0x0,
          compat_rmtp = 0x0
        },
        expires = 30
      },
      poll = {
        ufds = 0x791b80,
        nfds = 0,
        has_timeout = 0,
        tv_sec = 30,
        tv_nsec = 685393978
      }
    }
  },
  pid = 21120,
  tgid = 21120,
  stack_canary = 2699928380174480896,
  real_parent = 0xffff8fd80b129e40,
  parent = 0xffff8fd80b129e40,
  children = {
    next = 0xffff8fd7f10ddf60,
    prev = 0xffff8fd7f10ddf60
  },
  sibling = {
    next = 0xffff8fd7ef4e84b0,
    prev = 0xffff8fd80b12a2e0
  },
  group_leader = 0xffff8fd7f10ddac0,
  ptraced = {
    next = 0xffff8fd7f10ddf88,
    prev = 0xffff8fd7f10ddf88
  },
  ptrace_entry = {
    next = 0xffff8fd7f10ddf98,
    prev = 0xffff8fd7f10ddf98
  },
  thread_pid = 0xffff8fd8a5c6e000,
  pid_links = {{
      next = 0x0,
      pprev = 0xffff8fd8a5c6e008
    }, {
      next = 0x0,
      pprev = 0xffff8fd8a5c6e010
    }, {
      next = 0xffff8fd80b12a350,
      pprev = 0xffff8fd7ef4e8510
    }, {
      next = 0xffff8fd80b12a360,
      pprev = 0xffff8fd7ef4e8520
    }},
  thread_group = {
    next = 0xffff8fd7f10ddff0,
    prev = 0xffff8fd7f10ddff0
  },
  thread_node = {
    next = 0xffff8fd18547bfd0,
    prev = 0xffff8fd18547bfd0
  },
  vfork_done = 0x0,
  set_child_tid = 0x714358935a10,
  clear_child_tid = 0x714358935a10,
  utime = 2991526,
  stime = 275229123556,
  gtime = 0,
  prev_cputime = {
    utime = 0,
    stime = 0,
    lock = {
      raw_lock = {
        {
          val = {
            counter = 0
          },
          {
            locked = 0 '\000',
            pending = 0 '\000'
          },
          {
            locked_pending = 0,
            tail = 0
          }
        }
      }
    }
  },
  vtime = {
    seqcount = {
      sequence = 0
    },
    starttime = 0,
    state = VTIME_INACTIVE,
    utime = 0,
    stime = 0,
    gtime = 0
  },
  tick_dep_mask = {
    counter = 0
  },
  nvcsw = 64,
  nivcsw = 862,
  start_time = 4707054953905,
  real_start_time = 4707054953927,
  min_flt = 16888,
  maj_flt = 0,
  cputime_expires = {
    utime = 0,
    stime = 0,
    sum_exec_runtime = 0
  },
  cpu_timers = {{
      next = 0xffff8fd7f10de0d8,
      prev = 0xffff8fd7f10de0d8
    }, {
      next = 0xffff8fd7f10de0e8,
      prev = 0xffff8fd7f10de0e8
    }, {
      next = 0xffff8fd7f10de0f8,
      prev = 0xffff8fd7f10de0f8
    }},
  ptracer_cred = 0x0,
  real_cred = 0xffff8fd188b0cd80,
  cred = 0xffff8fd188b0cd80,
  comm = "stress\000ce4-term",
  nameidata = 0x0,
  sysvsem = {
    undo_list = 0x0
  },
  sysvshm = {
    shm_clist = {
      next = 0xffff8fd7f10de140,
      prev = 0xffff8fd7f10de140
    }
  },
  last_switch_count = 0,
  last_switch_time = 0,
  fs = 0xffff8fd84b0e8f40,
  files = 0xffff8fd2944fd600,
  nsproxy = 0xffffffff990349a0,
  signal = 0xffff8fd18547bfc0,
  sighand = 0xffff8fd3c8277380,
  blocked = {
    sig = {0}
  },
  real_blocked = {
    sig = {0}
  },
  saved_sigmask = {
    sig = {512}
  },
  pending = {
    list = {
      next = 0xffff8fd7f10de1a0,
      prev = 0xffff8fd7f10de1a0
    },
    signal = {
      sig = {256}
    }
  },
  sas_ss_sp = 0,
  sas_ss_size = 0,
  sas_ss_flags = 2,
  task_works = 0x0,
  audit_context = 0x0,
  loginuid = {
    val = 1000
  },
  sessionid = 1,
  seccomp = {
    mode = 0,
    filter = 0x0
  },
  parent_exec_id = 15,
  self_exec_id = 15,
  alloc_lock = {
    {
      rlock = {
        raw_lock = {
          {
            val = {
              counter = 0
            },
            {
              locked = 0 '\000',
              pending = 0 '\000'
            },
            {
              locked_pending = 0,
              tail = 0
            }
          }
        }
      }
    }
  },
  pi_lock = {
    raw_lock = {
      {
        val = {
          counter = 0
        },
        {
          locked = 0 '\000',
          pending = 0 '\000'
        },
        {
          locked_pending = 0,
          tail = 0
        }
      }
    }
  },
  wake_q = {
    next = 0x0
  },
  pi_waiters = {
    rb_root = {
      rb_node = 0x0
    },
    rb_leftmost = 0x0
  },
  pi_top_task = 0x0,
  pi_blocked_on = 0x0,
  journal_info = 0x0,
  bio_list = 0x0,
  plug = 0x0,
  reclaim_state = 0x0,
  backing_dev_info = 0x0,
  io_context = 0xffff8fd84b2ce888,
  capture_control = 0xffff9cb9a9f57ac0,
  ptrace_message = 0,
  last_siginfo = 0x0,
  ioac = {
    rchar = 0,
    wchar = 0,
    syscr = 0,
    syscw = 0,
    read_bytes = 0,
    write_bytes = 0,
    cancelled_write_bytes = 0
  },
  psi_flags = 6,
  acct_rss_mem1 = 3212941986541,
  acct_vm_mem1 = 656456860857633,
  acct_timexpd = 275231119481,
  mems_allowed = {
    bits = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
  },
  mems_allowed_seq = {
    sequence = 0
  },
  cpuset_mem_spread_rotor = -1,
  cpuset_slab_spread_rotor = -1,
  cgroups = 0xffff8fd8a4d01800,
  cg_list = {
    next = 0xffff8fd7ef4e88a8,
    prev = 0xffff8fd80b12a6e8
  },
  robust_list = 0x0,
  compat_robust_list = 0x0,
  pi_state_list = {
    next = 0xffff8fd7f10de388,
    prev = 0xffff8fd7f10de388
  },
  pi_state_cache = 0x0,
  perf_event_ctxp = {0x0, 0x0},
  perf_event_mutex = {
    owner = {
      counter = 0
    },
    wait_lock = {
      {
        rlock = {
          raw_lock = {
            {
              val = {
                counter = 0
              },
              {
                locked = 0 '\000',
                pending = 0 '\000'
              },
              {
                locked_pending = 0,
                tail = 0
              }
            }
          }
        }
      }
    },
    osq = {
      tail = {
        counter = 0
      }
    },
    wait_list = {
      next = 0xffff8fd7f10de3c0,
      prev = 0xffff8fd7f10de3c0
    }
  },
  perf_event_list = {
    next = 0xffff8fd7f10de3d0,
    prev = 0xffff8fd7f10de3d0
  },
  mempolicy = 0x0,
  il_prev = 0,
  pref_node_fork = 0,
  numa_scan_seq = 0,
  numa_scan_period = 1000,
  numa_scan_period_max = 0,
  numa_preferred_nid = -1,
  numa_migrate_retry = 0,
  node_stamp = 0,
  last_task_numa_placement = 0,
  last_sum_exec_runtime = 0,
  numa_work = {
    next = 0xffff8fd7f10de420,
    func = 0x0
  },
  numa_group = 0x0,
  numa_faults = 0x0,
  total_numa_faults = 0,
  numa_faults_locality = {0, 0, 0},
  numa_pages_migrated = 0,
  rseq = 0x0,
  rseq_sig = 0,
  rseq_event_mask = 5,
  tlb_ubc = {
    arch = {
      cpumask = {
        bits = {0}
      }
    },
    flush_required = false,
    writable = false
  },
  rcu = {
    next = 0x0,
    func = 0x0
  },
  splice_pipe = 0x0,
  task_frag = {
    page = 0x0,
    offset = 0,
    size = 0
  },
  delays = 0xffff8fd8a638d3c0,
  nr_dirtied = 0,
  nr_dirtied_pause = 32,
  dirty_paused_when = 0,
  latency_record_count = 0,
  latency_record = {{
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }, {
      backtrace = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
      count = 0,
      time = 0,
      max = 0
    }},
  timer_slack_ns = 50000,
  default_timer_slack_ns = 50000,
  memcg_in_oom = 0x0,
  memcg_oom_gfp_mask = 0,
  memcg_oom_order = 0,
  memcg_nr_pages_over_high = 0,
  active_memcg = 0x0,
  throttle_queue = 0x0,
  pagefault_disabled = 0,
  oom_reaper_list = 0x0,
  stack_vm_area = 0xffff8fd3895a9fc0,
  stack_refcount = {
    refs = {
      counter = 1
    }
  },
  security = 0x0,
  thread = {
    tls_array = {{
        limit0 = 0,
        base0 = 0,
        base1 = 0,
        type = 0,
        s = 0,
        dpl = 0,
        p = 0,
        limit1 = 0,
        avl = 0,
        l = 0,
        d = 0,
        g = 0,
        base2 = 0
      }, {
        limit0 = 0,
        base0 = 0,
        base1 = 0,
        type = 0,
        s = 0,
        dpl = 0,
        p = 0,
        limit1 = 0,
        avl = 0,
        l = 0,
        d = 0,
        g = 0,
        base2 = 0
      }, {
        limit0 = 0,
        base0 = 0,
        base1 = 0,
        type = 0,
        s = 0,
        dpl = 0,
        p = 0,
        limit1 = 0,
        avl = 0,
        l = 0,
        d = 0,
        g = 0,
        base2 = 0
      }},
    sp = 18446634919967160496,
    es = 0,
    ds = 0,
    fsindex = 0,
    gsindex = 0,
    fsbase = 124534062798656,
    gsbase = 0,
    ptrace_bps = {0x0, 0x0, 0x0, 0x0},
    debugreg6 = 0,
    ptrace_dr7 = 0,
    cr2 = 0,
    trap_nr = 0,
    error_code = 0,
    io_bitmap_ptr = 0x0,
    iopl = 0,
    io_bitmap_max = 0,
    addr_limit = {
      seg = 140737488351232
    },
    sig_on_uaccess_err = 0,
    uaccess_err = 0,
    fpu = {
      last_cpu = 9,
      avx512_timestamp = 0,
      state = {
        fsave = {
          cwd = 0,
          swd = 0,
          twd = 0,
          fip = 0,
          fcs = 0,
          foo = 0,
          fos = 0,
          st_space = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
          status = 0
        },
        fxsave = {
          cwd = 0,
          swd = 0,
          twd = 0,
          fop = 0,
          {
            {
              rip = 0,
              rdp = 0
            },
            {
              fip = 0,
              fcs = 0,
              foo = 0,
              fos = 0
            }
          },
          mxcsr = 0,
          mxcsr_mask = 0,
          st_space = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
          xmm_space = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
          padding = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
          {
            padding1 = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
            sw_reserved = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
          }
        },
        soft = {
          cwd = 0,
          swd = 0,
          twd = 0,
          fip = 0,
          fcs = 0,
          foo = 0,
          fos = 0,
          st_space = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
          ftop = 0 '\000',
          changed = 0 '\000',
          lookahead = 0 '\000',
          no_update = 0 '\000',
          rm = 0 '\000',
          alimit = 0 '\000',
          info = 0x0,
          entry_eip = 0
        },
        xsave = {
          i387 = {
            cwd = 0,
            swd = 0,
            twd = 0,
            fop = 0,
            {
              {
                rip = 0,
                rdp = 0
              },
              {
                fip = 0,
                fcs = 0,
                foo = 0,
                fos = 0
              }
            },
            mxcsr = 0,
            mxcsr_mask = 0,
            st_space = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
            xmm_space = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
            padding = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
            {
              padding1 = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
              sw_reserved = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
            }
          },
          header = {
            xfeatures = 0,
            xcomp_bv = 9223372036854775839,
            reserved = {0, 0, 0, 0, 0, 0}
          },
          extended_state_area = 0xffff8fd7f10df780 ""
        },
        __padding = "\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\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\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\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\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\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\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\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\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\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\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\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\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\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\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\000\000\000\000\000\000\000\000\000\000"...
      }
    }
  }
}

struct thread_info {
  flags = 2147500036,
  status = 0
}

crash>


crash> bt -l 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
(active)

crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b35c6
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>

crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57918] compact_unlock_should_abort at ffffffff981b27f8
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac66d
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac660
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac675
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b350b
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3539
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b34e4
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b373f
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b34e4
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac662
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b2e
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac662
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b350b
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b35a0
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b2e
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3552
  [ffff9cb9a9f57948] _cond_resched at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b35a5
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3572
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac662
  [ffff9cb9a9f57948] _cond_resched at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b35a5
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] _cond_resched at ffffffff987f5f2b
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b35ec
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3591
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3546
  [ffff9cb9a9f57948] _cond_resched at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b35a5
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac675
  [ffff9cb9a9f57948] _cond_resched at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b35a5
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac675
  [ffff9cb9a9f57948] _cond_resched at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b35a5
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac660
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b35a0
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] compact_unlock_should_abort at ffffffff981b27f0
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b34f9
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3546
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3798
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57918] compact_unlock_should_abort at ffffffff981b2822
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57918] compact_unlock_should_abort at ffffffff981b27f8
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4b69
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] compact_unlock_should_abort at ffffffff981b27f0
  [ffff9cb9a9f57930] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f579b8] isolate_migratepages_block at ffffffff981b378e
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b373f
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57918] compact_unlock_should_abort at ffffffff981b27f8
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b350b
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>

crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3798
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -t 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
              START: __schedule at ffffffff987f5a0c
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3539
  [ffff9cb9a9f57930] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>


crash> bt -T 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity at ffffffff980cea64
  [ffff9cb9a9f57700] record_times at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup at ffffffff980c2d02
  [ffff9cb9a9f577c0] __free_one_page at ffffffff981d66a4
  [ffff9cb9a9f577c8] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57808] __update_load_avg_cfs_rq at ffffffff980e085f
  [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57858] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57890] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3572
  [ffff9cb9a9f57948] _cond_resched at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -T 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity at ffffffff980cea64
  [ffff9cb9a9f57700] record_times at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup at ffffffff980c2d02
  [ffff9cb9a9f577c0] __free_one_page at ffffffff981d66a4
  [ffff9cb9a9f577c8] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57808] __update_load_avg_cfs_rq at ffffffff980e085f
  [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57858] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57890] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b350b
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>

crash> bt -T 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity at ffffffff980cea64
  [ffff9cb9a9f57700] record_times at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup at ffffffff980c2d02
  [ffff9cb9a9f577c0] __free_one_page at ffffffff981d66a4
  [ffff9cb9a9f577c8] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57808] __update_load_avg_cfs_rq at ffffffff980e085f
  [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57858] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57890] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57918] rcu_all_qs at ffffffff980ff319
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -T 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 9   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity at ffffffff980cea64
  [ffff9cb9a9f57700] record_times at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup at ffffffff980c2d02
  [ffff9cb9a9f577c0] __free_one_page at ffffffff981d66a4
  [ffff9cb9a9f577c8] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57808] __update_load_avg_cfs_rq at ffffffff980e085f
  [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57858] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57890] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3582
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>

$ colordiff -up /tmp/{a,b}
--- /tmp/a	2019-07-16 05:09:24.145246010 +0200
+++ /tmp/b	2019-07-16 05:09:27.399245979 +0200
@@ -29,7 +29,8 @@ PID: 21120  TASK: ffff8fd7f10ddac0  CPU:
   [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
   [ffff9cb9a9f57858] update_load_avg at ffffffff980cd6a6
   [ffff9cb9a9f57890] apic_timer_interrupt at ffffffff9880146a
-  [ffff9cb9a9f57918] rcu_all_qs at ffffffff980ff319
+  [ffff9cb9a9f578a0] apic_timer_interrupt at ffffffff9880146a
+  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3582
   [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
   [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
   [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
@@ -53,4 +54,4 @@ PID: 21120  TASK: ffff8fd7f10ddac0  CPU:
     R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
     R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
     ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
-
+crash>

crash> bt -T 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 0   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity at ffffffff980cea64
  [ffff9cb9a9f57700] record_times at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup at ffffffff980c2d02
  [ffff9cb9a9f577c8] try_to_wake_up at ffffffff980c3a06
  [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57850] set_next_entity at ffffffff980cdc29
  [ffff9cb9a9f57870] pick_next_task_fair at ffffffff980d4a50
  [ffff9cb9a9f578a0] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57928] isolate_migratepages_block at ffffffff981b3bc0
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -T 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 0   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity at ffffffff980cea64
  [ffff9cb9a9f57700] record_times at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup at ffffffff980c2d02
  [ffff9cb9a9f577c8] try_to_wake_up at ffffffff980c3a06
  [ffff9cb9a9f57810] update_load_avg at ffffffff980cd6a6
  [ffff9cb9a9f57850] set_next_entity at ffffffff980cdc29
  [ffff9cb9a9f57870] pick_next_task_fair at ffffffff980d4a50
  [ffff9cb9a9f57890] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt at ffffffff9880146a
  [ffff9cb9a9f57928] node_page_state at ffffffff981ac66d
  [ffff9cb9a9f57950] isolate_migratepages_block at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>

Ok, I don't know why but I can't start any more terminals and exiting chromium also made starter terminal unusable. Some kind of lockup/wait is at hand!
here's last of `strace bash -l`:
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7733e277fa10) = 22571
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x623cac34987a, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7733e27c8910}, {sa_handler=0x623cac34987a, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7733e27c8910}, 8) = 0
close(4)                                = 0
read(3, "\33[4m", 512)                  = 4
read(3, "", 512)                        = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22571, si_uid=1000, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 22571
wait4(-1, 0x7ffc85dc1b50, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn({mask=[]})                 = 0
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x623cac347485, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7733e27c8910}, {sa_handler=0x623cac36e877, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7733e27c8910}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x623cac36e877, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7733e27c8910}, {sa_handler=0x623cac347485, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7733e27c8910}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
pipe([3, 4])                            = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [CHLD], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [INT CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7733e277fa10) = 22572
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
close(4)                                = 0
close(4)                                = -1 EBADF (Bad file descriptor)
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [CHLD], 8) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7733e277fa10) = 22573
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x623cac347485, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7733e27c8910}, {sa_handler=0x623cac36e877, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7733e27c8910}, 8) = 0
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1, 0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = 61
wait4(-1,
^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, [{WIFSIGNALED(s) && WTERMSIG(s) == SIGINT}], 0, NULL) = 22573
wait4(-1,
^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1, ^C0x7ffc85dc2690, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---
rt_sigreturn({mask=[CHLD]})             = -1 EINTR (Interrupted system call)
wait4(-1,

crash> bt -f 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
(active)
crash> bt -F 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
(active)
crash> bt -FF 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
(active)
crash> bt -v 21120
No stack overflows detected

crash> bt -Tsx 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds+0x4f at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath+0x175 at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp+0xba at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt+0xa at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal+0x8db at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal+0xad at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal+0x1c9 at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd+0x1e at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc+0x1e3 at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg+0x42b at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue+0xbf at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity+0xe4 at ffffffff980cea64
  [ffff9cb9a9f57700] record_times+0x10 at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup+0x182 at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr+0x70 at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup+0x12 at ffffffff980c2d02
  [ffff9cb9a9f577c8] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f57810] update_load_avg+0x76 at ffffffff980cd6a6
  [ffff9cb9a9f57850] set_next_entity+0x89 at ffffffff980cdc29
  [ffff9cb9a9f57858] update_load_avg+0x76 at ffffffff980cd6a6
  [ffff9cb9a9f57890] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f57928] node_page_state+0x15 at ffffffff981ac675
  [ffff9cb9a9f57948] _cond_resched+0x10 at ffffffff987f5f30
  [ffff9cb9a9f57950] isolate_migratepages_block+0xd5 at ffffffff981b35a5
  [ffff9cb9a9f57a10] compact_zone+0x577 at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order+0xde at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages+0x187 at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact+0x87 at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath+0x20e at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages+0x348 at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn+0x189 at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask+0x268 at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page+0x131 at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault+0xc0c at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault+0xa9 at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault+0x237 at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault+0x1d at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault+0x8 at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault+0x1e at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b

crash> bt -Tsx 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds+0x4f at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath+0x175 at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp+0xba at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt+0xa at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal+0x8db at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal+0xad at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal+0x1c9 at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd+0x1e at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc+0x1e3 at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg+0x42b at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue+0xbf at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity+0xe4 at ffffffff980cea64
  [ffff9cb9a9f57700] record_times+0x10 at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup+0x182 at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr+0x70 at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup+0x12 at ffffffff980c2d02
  [ffff9cb9a9f577c8] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f57810] update_load_avg+0x76 at ffffffff980cd6a6
  [ffff9cb9a9f57850] set_next_entity+0x89 at ffffffff980cdc29
  [ffff9cb9a9f57870] pick_next_task_fair+0x590 at ffffffff980d4a50
  [ffff9cb9a9f57890] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f57928] isolate_migratepages_block+0x2a7 at ffffffff981b3777
  [ffff9cb9a9f57950] isolate_migratepages_block+0x2ed at ffffffff981b37bd
  [ffff9cb9a9f57a10] compact_zone+0x577 at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order+0xde at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages+0x187 at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact+0x87 at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath+0x20e at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages+0x348 at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn+0x189 at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask+0x268 at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page+0x131 at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault+0xc0c at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault+0xa9 at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault+0x237 at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault+0x1d at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault+0x8 at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault+0x1e at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash> bt -Tsx 21120
PID: 21120  TASK: ffff8fd7f10ddac0  CPU: 4   COMMAND: "stress"
  [ffff9cb9a9f57160] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57180] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57200] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f572f8] wake_all_kswapds+0x4f at ffffffff981d5e5f
  [ffff9cb9a9f57338] __alloc_pages_slowpath+0x175 at ffffffff981d9955
  [ffff9cb9a9f57368] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57378] get_page_from_freelist+0xe88 at ffffffff981d9078
  [ffff9cb9a9f57408] FSE_buildCTable_wksp+0xba at ffffffff98485f5a
  [ffff9cb9a9f57410] reschedule_interrupt+0xa at ffffffff9880152a
  [ffff9cb9a9f57478] ZSTD_compressSequences_internal+0x8db at ffffffff9849ecbb
  [ffff9cb9a9f57548] ZSTD_compressBlock_internal+0xad at ffffffff9849f4dd
  [ffff9cb9a9f57570] ZSTD_compressContinue_internal+0x1c9 at ffffffff9849f709
  [ffff9cb9a9f575d8] ZSTD_compressEnd+0x1e at ffffffff9849f9ae
  [ffff9cb9a9f57620] zs_malloc+0x1e3 at ffffffff98217ad3
  [ffff9cb9a9f57648] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f57668] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f576b8] update_load_avg+0x42b at ffffffff980cda5b
  [ffff9cb9a9f576c0] account_entity_enqueue+0xbf at ffffffff980cc13f
  [ffff9cb9a9f576f8] enqueue_entity+0xe4 at ffffffff980cea64
  [ffff9cb9a9f57700] record_times+0x10 at ffffffff980e8140
  [ffff9cb9a9f57750] check_preempt_wakeup+0x182 at ffffffff980cd422
  [ffff9cb9a9f57798] check_preempt_curr+0x70 at ffffffff980c2ce0
  [ffff9cb9a9f577a8] ttwu_do_wakeup+0x12 at ffffffff980c2d02
  [ffff9cb9a9f577c8] __update_load_avg_se+0x200 at ffffffff980e05d0
  [ffff9cb9a9f57810] update_load_avg+0x76 at ffffffff980cd6a6
  [ffff9cb9a9f57850] set_next_entity+0x89 at ffffffff980cdc29
  [ffff9cb9a9f57870] pick_next_task_fair+0x590 at ffffffff980d4a50
  [ffff9cb9a9f57890] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f578a0] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f57928] isolate_migratepages_block+0xd5 at ffffffff981b35a5
  [ffff9cb9a9f57930] apic_timer_interrupt+0xa at ffffffff9880146a
  [ffff9cb9a9f57950] isolate_migratepages_block+0x2ed at ffffffff981b37bd
  [ffff9cb9a9f579b8] isolate_migratepages_block+0x9 at ffffffff981b34d9
  [ffff9cb9a9f57a10] compact_zone+0x577 at ffffffff981b4c07
  [ffff9cb9a9f57ab8] compact_zone_order+0xde at ffffffff981b51de
  [ffff9cb9a9f57b78] try_to_compact_pages+0x187 at ffffffff981b5a17
  [ffff9cb9a9f57bd8] __alloc_pages_direct_compact+0x87 at ffffffff981d95a7
  [ffff9cb9a9f57c30] __alloc_pages_slowpath+0x20e at ffffffff981d99ee
  [ffff9cb9a9f57cd0] release_pages+0x348 at ffffffff9819aa08
  [ffff9cb9a9f57d00] __pagevec_lru_add_fn+0x189 at ffffffff9819ada9
  [ffff9cb9a9f57d40] __alloc_pages_nodemask+0x268 at ffffffff981da668
  [ffff9cb9a9f57da0] do_huge_pmd_anonymous_page+0x131 at ffffffff98202c01
  [ffff9cb9a9f57df0] __handle_mm_fault+0xc0c at ffffffff981bfa4c
  [ffff9cb9a9f57ea0] handle_mm_fault+0xa9 at ffffffff981c01f9
  [ffff9cb9a9f57ec8] __do_page_fault+0x237 at ffffffff9803d5c7
  [ffff9cb9a9f57f28] do_page_fault+0x1d at ffffffff9803d85d
  [ffff9cb9a9f57f48] page_fault+0x8 at ffffffff98800de8
  [ffff9cb9a9f57f50] page_fault+0x1e at ffffffff98800dfe
    RIP: 00005879fc8c4c10  RSP: 00007ffd393aa0d0  RFLAGS: 00010206
    RAX: 0000000010b8a000  RBX: 0000714104876010  RCX: 0000714358a5a3db
    RDX: 0000000000000000  RSI: 00000002540bf000  RDI: 0000714104876000
    RBP: 00005879fc8c5a54   R8: 0000714104876010   R9: 0000000000000000
    R10: 0000000000000022  R11: 00000002540be400  R12: ffffffffffffffff
    R13: 0000000000000002  R14: 0000000000001000  R15: 00000002540be400
    ORIG_RAX: ffffffffffffffff  CS: 0033  SS: 002b
crash>

diff of the above two:
$ colordiff -up /tmp/{c,d}
--- /tmp/c	2019-07-16 05:20:20.959239746 +0200
+++ /tmp/d	2019-07-16 05:20:29.450239665 +0200
@@ -29,8 +29,10 @@ PID: 21120  TASK: ffff8fd7f10ddac0  CPU:
   [ffff9cb9a9f57870] pick_next_task_fair+0x590 at ffffffff980d4a50
   [ffff9cb9a9f57890] apic_timer_interrupt+0xa at ffffffff9880146a
   [ffff9cb9a9f578a0] apic_timer_interrupt+0xa at ffffffff9880146a
-  [ffff9cb9a9f57928] isolate_migratepages_block+0x2a7 at ffffffff981b3777
+  [ffff9cb9a9f57928] isolate_migratepages_block+0xd5 at ffffffff981b35a5
+  [ffff9cb9a9f57930] apic_timer_interrupt+0xa at ffffffff9880146a
   [ffff9cb9a9f57950] isolate_migratepages_block+0x2ed at ffffffff981b37bd
+  [ffff9cb9a9f579b8] isolate_migratepages_block+0x9 at ffffffff981b34d9
   [ffff9cb9a9f57a10] compact_zone+0x577 at ffffffff981b4c07
   [ffff9cb9a9f57ab8] compact_zone_order+0xde at ffffffff981b51de
   [ffff9cb9a9f57b78] try_to_compact_pages+0x187 at ffffffff981b5a17







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