4 Replies Latest reply on Feb 21, 2017 3:17 PM by Intel Corporation

    USB ports are flaky in RHEL 7

    Kevitivity

      Product Name: D54250WYK

      Version: H13922-304

      Serial Number: GEWY438001FJ

      BIOS: 0041

       

      Because the internal SATA port on my NUC was flaky I moved my ssd drive into an external USB 3.0 enclosure.  This worked fine for a few months and then it too got flaky. The OS enumerated the drive at boot, and I can see it with the fdisk and lsscsi commands and most of the time it mounts fine. But when I try to write to the drive it hangs.  sometimes the mount command hangs.

       

      I've tried all USB ports.  I've tried two different ssd drives in two different enclosures. I've also tried regular old USB thumb drives.

       

      Any ideas?

      Syslog output: during USB hang

      [  741.730736] sd 4:0:0:0: [sdb] tag#0 uas_eh_abort_handler 0 uas-tag 1 inflight: CMD IN

      [  741.730745] sd 4:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 1d cf 2f 80 00 00 08 00

      [  741.730855] scsi host4: uas_eh_bus_reset_handler start

      [  741.899892] usb 3-4: reset SuperSpeed USB device number 2 using xhci_hcd

      [  746.910656] usb 3-4: device descriptor read/8, error -110

      [  747.011564] usb 3-4: reset SuperSpeed USB device number 2 using xhci_hcd

      [  752.022545] usb 3-4: device descriptor read/8, error -110

      [  752.175382] scsi host4: uas_post_reset: alloc streams error -19 after reset

      [  752.175417] usb 3-4: USB disconnect, device number 2

      [  752.177899] sd 4:0:0:0: [sdb] Synchronizing SCSI cache

      [  960.050805] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [  960.050810] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [  960.050813] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [  960.050825] Workqueue: usb_hub_wq hub_event

      [  960.050827]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [  960.050831]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [  960.050835]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [  960.050838] Call Trace:

      [  960.050848]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [  960.050853]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [  960.050858]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [  960.050863]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [  960.050867]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [  960.050872]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [  960.050879]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [  960.050884]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [  960.050888]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [  960.050892]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [  960.050895]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [  960.050901]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [  960.050905]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [  960.050912]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [  960.050917]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1080.048114] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1080.048119] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1080.048122] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1080.048134] Workqueue: usb_hub_wq hub_event

      [ 1080.048137]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1080.048141]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1080.048144]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1080.048148] Call Trace:

      [ 1080.048158]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1080.048163]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1080.048168]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1080.048173]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1080.048177]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1080.048182]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1080.048188]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1080.048194]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1080.048198]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1080.048201]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1080.048204]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1080.048210]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1080.048215]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1080.048222]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1080.048226]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1200.045371] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1200.045377] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1200.045380] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1200.045392] Workqueue: usb_hub_wq hub_event

      [ 1200.045395]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1200.045398]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1200.045402]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1200.045406] Call Trace:

      [ 1200.045416]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1200.045421]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1200.045426]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1200.045430]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1200.045435]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1200.045439]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1200.045446]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1200.045451]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1200.045455]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1200.045459]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1200.045462]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1200.045468]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1200.045473]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1200.045479]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1200.045484]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1320.042662] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1320.042667] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1320.042670] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1320.042682] Workqueue: usb_hub_wq hub_event

      [ 1320.042685]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1320.042689]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1320.042692]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1320.042696] Call Trace:

      [ 1320.042706]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1320.042711]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1320.042716]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1320.042720]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1320.042725]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1320.042729]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1320.042736]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1320.042741]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1320.042746]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1320.042749]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1320.042752]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1320.042758]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1320.042763]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1320.042769]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1320.042774]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1440.039931] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1440.039936] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1440.039939] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1440.039951] Workqueue: usb_hub_wq hub_event

      [ 1440.039954]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1440.039957]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1440.039961]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1440.039965] Call Trace:

      [ 1440.039975]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1440.039980]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1440.039985]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1440.039989]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1440.039994]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1440.039998]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1440.040005]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1440.040010]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1440.040014]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1440.040018]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1440.040021]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1440.040027]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1440.040032]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1440.040038]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1440.040043]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1560.037249] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1560.037255] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1560.037258] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1560.037271] Workqueue: usb_hub_wq hub_event

      [ 1560.037274]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1560.037279]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1560.037282]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1560.037286] Call Trace:

      [ 1560.037296]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1560.037301]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1560.037306]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1560.037310]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1560.037315]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1560.037320]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1560.037326]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1560.037331]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1560.037336]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1560.037339]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1560.037343]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1560.037349]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1560.037354]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1560.037361]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1560.037366]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1680.034458] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1680.034463] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1680.034466] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1680.034477] Workqueue: usb_hub_wq hub_event

      [ 1680.034479]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1680.034483]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1680.034487]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1680.034490] Call Trace:

      [ 1680.034500]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1680.034505]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1680.034510]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1680.034514]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1680.034519]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1680.034523]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1680.034529]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1680.034534]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1680.034538]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1680.034541]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1680.034544]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1680.034549]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1680.034553]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1680.034559]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1680.034563]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1800.031791] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1800.031797] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1800.031800] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1800.031812] Workqueue: usb_hub_wq hub_event

      [ 1800.031814]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1800.031818]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1800.031822]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1800.031825] Call Trace:

      [ 1800.031835]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1800.031841]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1800.031846]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1800.031850]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1800.031855]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1800.031860]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1800.031866]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1800.031872]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1800.031876]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1800.031879]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1800.031883]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1800.031889]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1800.031893]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1800.031900]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1800.031905]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1920.029079] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 1920.029084] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 1920.029087] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 1920.029099] Workqueue: usb_hub_wq hub_event

      [ 1920.029102]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 1920.029106]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 1920.029109]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 1920.029113] Call Trace:

      [ 1920.029123]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 1920.029128]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 1920.029133]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 1920.029137]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 1920.029142]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 1920.029146]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 1920.029153]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 1920.029159]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 1920.029163]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 1920.029166]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 1920.029170]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 1920.029175]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 1920.029180]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 1920.029187]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 1920.029191]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 2040.026323] INFO: task kworker/2:1:82 blocked for more than 120 seconds.

      [ 2040.026328] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

      [ 2040.026331] kworker/2:1     D ffff8800c88bf5d4     0    82      2 0x00000000

      [ 2040.026342] Workqueue: usb_hub_wq hub_event

      [ 2040.026345]  ffff8802137dfc10 0000000000000046 ffff8802136abec0 ffff8802137dffd8

      [ 2040.026348]  ffff8802137dffd8 ffff8802137dffd8 ffff8802136abec0 ffff880212cba8f8

      [ 2040.026352]  ffff880212cba8fc ffff8802136abec0 00000000ffffffff ffff880212cba900

      [ 2040.026355] Call Trace:

      [ 2040.026365]  [<ffffffff8168c969>] schedule_preempt_disabled+0x29/0x70

      [ 2040.026369]  [<ffffffff8168a5c5>] __mutex_lock_slowpath+0xc5/0x1c0

      [ 2040.026374]  [<ffffffff81689a2f>] mutex_lock+0x1f/0x2f

      [ 2040.026379]  [<ffffffff81474cf7>] usb_disconnect+0x57/0x250

      [ 2040.026383]  [<ffffffff81476880>] hub_port_connect+0x80/0xa10

      [ 2040.026387]  [<ffffffff8147794f>] hub_event+0x73f/0xb30

      [ 2040.026393]  [<ffffffff810ced3e>] ? dequeue_task_fair+0x41e/0x660

      [ 2040.026398]  [<ffffffff810c7e55>] ? sched_clock_cpu+0x85/0xc0

      [ 2040.026402]  [<ffffffff810a805b>] process_one_work+0x17b/0x470

      [ 2040.026405]  [<ffffffff810a8e96>] worker_thread+0x126/0x410

      [ 2040.026408]  [<ffffffff810a8d70>] ? rescuer_thread+0x460/0x460

      [ 2040.026413]  [<ffffffff810b064f>] kthread+0xcf/0xe0

      [ 2040.026418]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [ 2040.026424]  [<ffffffff81696718>] ret_from_fork+0x58/0x90

      [ 2040.026428]  [<ffffffff810b0580>] ? kthread_create_on_node+0x140/0x140

      [49408.806264] perf: interrupt took too long (2507 > 2500), lowering kernel.perf_event_max_sample_rate to 79000