usb 2-1: USB disconnect, device number 59
INFO: task kworker/1:4:5411 blocked for more than 143 seconds.
Not tainted 5.1.0-rc4-319354-g9a33b36 #3
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/1:4 D22880 5411 2 0x80000000
Workqueue: usb_hub_wq hub_event
Call Trace:
schedule+0x8f/0x180 kernel/sched/core.c:3562
schedule_preempt_disabled+0x11/0x20 kernel/sched/core.c:3620
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x800/0x12b0 kernel/locking/mutex.c:1072
drm_dev_register+0x4f/0x540 drivers/gpu/drm/drm_drv.c:782
udl_usb_probe+0x72/0xc4 drivers/gpu/drm/udl/udl_drv.c:88
usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
really_probe+0x2da/0xb10 drivers/base/dd.c:509
driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
__device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
__device_attach+0x223/0x3a0 drivers/base/dd.c:844
bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
device_add+0xad2/0x16e0 drivers/base/core.c:2106
usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021
generic_probe+0xa2/0xda drivers/usb/core/generic.c:210
usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266
really_probe+0x2da/0xb10 drivers/base/dd.c:509
driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
__device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
__device_attach+0x223/0x3a0 drivers/base/dd.c:844
bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
device_add+0xad2/0x16e0 drivers/base/core.c:2106
usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534
hub_port_connect drivers/usb/core/hub.c:5089 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
port_event drivers/usb/core/hub.c:5350 [inline]
hub_event+0x138e/0x3b00 drivers/usb/core/hub.c:5432
process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
worker_thread+0x9b/0xe20 kernel/workqueue.c:2415
kthread+0x313/0x420 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Showing all locks held in the system:
5 locks held by kworker/1:1/22:
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81f/0x1580 kernel/workqueue.c:2240
#1: 00000000e4cff862 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x853/0x1580 kernel/workqueue.c:2244
#2: 0000000059f5b059 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 0000000059f5b059 (&dev->mutex){....}, at: hub_event+0x18a/0x3b00 drivers/usb/core/hub.c:5378
#3: 00000000f8ade1f3 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#3: 00000000f8ade1f3 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#4: 000000009b7da1f4 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#4: 000000009b7da1f4 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
1 lock held by khungtaskd/23:
#0: 00000000c10987f4 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:5059
6 locks held by kworker/1:2/520:
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81f/0x1580 kernel/workqueue.c:2240
#1: 00000000d368c627 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x853/0x1580 kernel/workqueue.c:2244
#2: 000000009a062921 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 000000009a062921 (&dev->mutex){....}, at: hub_event+0x18a/0x3b00 drivers/usb/core/hub.c:5378
#3: 00000000cb836f00 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#3: 00000000cb836f00 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#4: 0000000089e02533 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#4: 0000000089e02533 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#5: 00000000898b32ce (&priv->usb_buf_mutex){+.+.}, at: rtl8xxxu_read32+0x59/0x140 drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c:703
1 lock held by rsyslogd/5208:
#0: 0000000079d2f1e7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe8/0x100 fs/file.c:801
2 locks held by getty/5298:
#0: 000000009231c7a5 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000001e361229 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
2 locks held by getty/5299:
#0: 000000003c1928e7 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000fc076c9c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
2 locks held by getty/5300:
#0: 00000000cd04e977 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000491fe2ff (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
2 locks held by getty/5301:
#0: 00000000d8dd9334 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000893351f1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
2 locks held by getty/5302:
#0: 00000000f4ca584c (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000003b086d19 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
2 locks held by getty/5303:
#0: 000000006fb4445e (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000429b3771 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
2 locks held by getty/5304:
#0: 00000000d653fca0 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x27/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000b9821a31 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21c/0x1a60 drivers/tty/n_tty.c:2156
5 locks held by kworker/0:4/5388:
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81f/0x1580 kernel/workqueue.c:2240
#1: 000000002e68f2ed ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x853/0x1580 kernel/workqueue.c:2244
#2: 000000000442606b (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 000000000442606b (&dev->mutex){....}, at: hub_event+0x18a/0x3b00 drivers/usb/core/hub.c:5378
#3: 00000000631f0ca0 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#3: 00000000631f0ca0 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#4: 0000000052553df6 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#4: 0000000052553df6 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
6 locks held by kworker/1:4/5411:
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81f/0x1580 kernel/workqueue.c:2240
#1: 000000000f122351 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x853/0x1580 kernel/workqueue.c:2244
#2: 00000000d98c3178 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 00000000d98c3178 (&dev->mutex){....}, at: hub_event+0x18a/0x3b00 drivers/usb/core/hub.c:5378
#3: 00000000df055d8c (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#3: 00000000df055d8c (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#4: 000000008104df83 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#4: 000000008104df83 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#5: 00000000a7d3bd27 (drm_global_mutex){+.+.}, at: drm_dev_register+0x4f/0x540 drivers/gpu/drm/drm_drv.c:782
6 locks held by kworker/0:5/5439:
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81f/0x1580 kernel/workqueue.c:2240
#1: 00000000ed95694a ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x853/0x1580 kernel/workqueue.c:2244
#2: 000000004c184907 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 000000004c184907 (&dev->mutex){....}, at: hub_event+0x18a/0x3b00 drivers/usb/core/hub.c:5378
#3: 0000000031b8ca6a (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2994 [inline]
#3: 0000000031b8ca6a (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5020 [inline]
#3: 0000000031b8ca6a (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
#3: 0000000031b8ca6a (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5350 [inline]
#3: 0000000031b8ca6a (&port_dev->status_lock){+.+.}, at: hub_event+0x11a3/0x3b00 drivers/usb/core/hub.c:5432
#4: 000000006d5e5707 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1bb/0x2d30 drivers/usb/core/hub.c:4529
#5: 000000006a9fb08b (ehci_cf_port_reset_rwsem){.+.+}, at: hub_port_reset+0x18a/0x1770 drivers/usb/core/hub.c:2856
usb 2-1: new high-speed USB device number 60 using dummy_hcd
6 locks held by kworker/0:6/5575:
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000cb38bebf ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81f/0x1580 kernel/workqueue.c:2240
#1: 000000003bae70b0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x853/0x1580 kernel/workqueue.c:2244
#2: 0000000034a6ae57 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 0000000034a6ae57 (&dev->mutex){....}, at: hub_event+0x18a/0x3b00 drivers/usb/core/hub.c:5378
#3: 000000002fd63002 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#3: 000000002fd63002 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#4: 00000000d73b4282 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#4: 00000000d73b4282 (&dev->mutex){....}, at: __device_attach+0x80/0x3a0 drivers/base/dd.c:821
#5: 00000000a7d3bd27 (drm_global_mutex){+.+.}, at: drm_dev_register+0x4f/0x540 drivers/gpu/drm/drm_drv.c:782
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.1.0-rc4-319354-g9a33b36 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xe8/0x16e lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x48/0x87 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1bd lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
watchdog+0x98e/0xe20 kernel/hung_task.c:288
kthread+0x313/0x420 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5390 Comm: syz-executor.5 Not tainted 5.1.0-rc4-319354-g9a33b36 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:write_comp_data+0x1e/0x70 kernel/kcov.c:195
Code: 48 89 11 c3 0f 1f 84 00 00 00 00 00 65 4c 8b 04 25 00 ee 01 00 65 8b 05 c0 27 90 7e a9 00 01 1f 00 75 51 41 8b 80 b0 12 00 00 <83> f8 03 75 45 49 8b 80 b8 12 00 00 45 8b 80 b4 12 00 00 4c 8b 08
RSP: 0000:ffff888070f07ad0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81a3c483
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8880a871b100 R08: ffff8880a871b100 R09: ffffed1015a05c28
R10: ffffed1015a05c27 R11: ffff8880ad02e13b R12: 0000000000000000
R13: ffff8880a057e280 R14: ffff8880a871b100 R15: ffff8880a871b100
FS: 0000000000a57940(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a57c14 CR3: 0000000070efe000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
task_css include/linux/cgroup.h:480 [inline]
blk_cgroup_congested include/linux/blk-cgroup.h:299 [inline]
mem_cgroup_throttle_swaprate+0x283/0x659 mm/swapfile.c:3633
mem_cgroup_try_charge_delay+0x64/0x90 mm/memcontrol.c:5951
wp_page_copy+0x356/0x1b90 mm/memory.c:2277
do_wp_page+0x647/0x1d60 mm/memory.c:2571
handle_pte_fault mm/memory.c:3826 [inline]
__handle_mm_fault+0x20a0/0x3870 mm/memory.c:3934
handle_mm_fault+0x373/0x9e0 mm/memory.c:3971
do_user_addr_fault arch/x86/mm/fault.c:1475 [inline]
__do_page_fault+0x606/0xd20 arch/x86/mm/fault.c:1541
page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143
RIP: 0033:0x45731e
Code: 5c 41 5d 41 5e 5d c3 48 c7 c2 d4 ff ff ff f7 d8 41 bd ff ff ff ff 64 89 02 64 8b 04 25 d0 02 00 00 41 39 c4 0f 85 2f 01 00 00 <64> 44 89 04 25 d4 02 00 00 45 85 f6 0f 85 7f 00 00 00 48 85 db 74
RSP: 002b:00007ffd0f6b40e0 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 00007ffd0f6b40e0 RCX: 00000000004571fa
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd0f6b4120 R08: 0000000000000001 R09: 0000000000a57940
R10: 0000000000a57c10 R11: 0000000000000246 R12: 0000000000000001
R13: 000000000000031f R14: 0000000000000000 R15: 00007ffd0f6b4170