INFO: task kworker/0:1:12 blocked for more than 143 seconds.
Not tainted 5.2.0-rc1+ #10
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:1 D24816 12 2 0x80004000
Workqueue: events request_firmware_work_func
Call Trace:
schedule+0x96/0x240 kernel/sched/core.c:3508
schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x7fb/0x12b0 kernel/locking/mutex.c:1072
device_lock include/linux/device.h:1207 [inline]
p54u_load_firmware_cb.cold+0xfb/0x13d drivers/net/wireless/intersil/p54/p54usb.c:941
request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:785
process_one_work+0x905/0x1570 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x30b/0x410 kernel/kthread.c:254
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Showing all locks held in the system:
3 locks held by kworker/0:1/12:
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:221 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: process_one_work+0x81a/0x1570 kernel/workqueue.c:2239
#1: 00000000bdbffa6d ((work_completion)(&fw_work->work)){+.+.}, at: process_one_work+0x84e/0x1570 kernel/workqueue.c:2243
#2: 00000000cc477ebd (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 00000000cc477ebd (&dev->mutex){....}, at: p54u_load_firmware_cb.cold+0xfb/0x13d drivers/net/wireless/intersil/p54/p54usb.c:941
5 locks held by kworker/1:1/22:
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:221 [inline]
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 000000002b727979 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81a/0x1570 kernel/workqueue.c:2239
#1: 000000004c9c19a6 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x84e/0x1570 kernel/workqueue.c:2243
#2: 00000000a853df7a (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 00000000a853df7a (&dev->mutex){....}, at: hub_event+0x179/0x3590 drivers/usb/core/hub.c:5378
#3: 000000002a44c797 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#3: 000000002a44c797 (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:820
#4: 00000000f7034aca (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#4: 00000000f7034aca (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:820
1 lock held by khungtaskd/23:
#0: 00000000765adc85 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:5146
1 lock held by rsyslogd/1622:
#0: 00000000d0dda881 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:801
2 locks held by getty/1711:
#0: 000000000305a1ec (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000cc07d3ce (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
2 locks held by getty/1712:
#0: 0000000076462c4a (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000042c4a1c6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
2 locks held by getty/1713:
#0: 0000000058582516 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000aaf6e377 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
2 locks held by getty/1714:
#0: 00000000b1057157 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000056e23619 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
2 locks held by getty/1715:
#0: 00000000ef4a8b0e (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 000000006541b6e6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
2 locks held by getty/1716:
#0: 00000000a4927f35 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000663f8fec (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
2 locks held by getty/1717:
#0: 00000000debd236a (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000d27f9235 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1a50 drivers/tty/n_tty.c:2156
6 locks held by kworker/0:2/2722:
5 locks held by kworker/0:5/2761:
6 locks held by kworker/1:4/2836:
5 locks held by kworker/1:6/2893:
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:221 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 0000000097290ac2 ((wq_completion)events){+.+.}, at: process_one_work+0x81a/0x1570 kernel/workqueue.c:2239
#1: 0000000079b9c335 ((work_completion)(&fw_work->work)){+.+.}, at: process_one_work+0x84e/0x1570 kernel/workqueue.c:2243
#2: 00000000789992c8 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
#2: 00000000789992c8 (&dev->mutex){....}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1077 [inline]
#2: 00000000789992c8 (&dev->mutex){....}, at: ath9k_hif_usb_firmware_cb+0x379/0x500 drivers/net/wireless/ath/ath9k/hif_usb.c:1210
#3: 00000000b5b9c2e9 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x4c0 drivers/base/dd.c:1109
#4: 0000000066351018 (hcd->bandwidth_mutex){+.+.}, at: usb_set_configuration+0x492/0x1670 drivers/usb/core/message.c:1886
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.2.0-rc1+ #10
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+0xca/0x13e 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+0x989/0xe20 kernel/hung_task.c:288
kthread+0x30b/0x410 kernel/kthread.c:254
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
dummy_hcd dummy_hcd.0: no ep configured for urb 00000000302e3c2b
NMI backtrace for cpu 1
CPU: 1 PID: 107 Comm: kworker/1:2 Not tainted 5.2.0-rc1+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:io_serial_out+0x68/0x80 drivers/tty/serial/8250/8250_port.c:456
Code: e9 00 00 00 48 8d 7d 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 15 03 5d 38 44 89 e0 89 da ee <5b> 5d 41 5c c3 e8 ee a4 4e ff eb c7 e8 17 a5 4e ff eb e4 0f 1f 44
RSP: 0018:ffff8881db3095c0 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff82140ac1 RDI: ffffffff89c5dd18
RBP: ffffffff89c5dce0 R08: ffff8881d4228000 R09: ffffed103b6612ab
R10: ffffed103b6612aa R11: 0000000000000003 R12: 0000000000000000
R13: ffffffff89c5df38 R14: ffffffff8711a640 R15: ffffffff89c5dd30
FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc666257000 CR3: 00000001b2632000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_port_out include/linux/serial_core.h:278 [inline]
serial8250_console_write+0x45b/0x830 drivers/tty/serial/8250/8250_port.c:3255
call_console_drivers kernel/printk/printk.c:1780 [inline]
console_unlock+0x862/0xbf0 kernel/printk/printk.c:2462
vprintk_emit+0x171/0x3e0 kernel/printk/printk.c:1985
dev_vprintk_emit+0x4fc/0x541 drivers/base/core.c:3190
dev_printk_emit+0xba/0xf1 drivers/base/core.c:3201
__dev_printk+0x1db/0x203 drivers/base/core.c:3213
dev_printk+0xd0/0x104 drivers/base/core.c:3230
dummy_timer.cold+0x41/0x3c0 drivers/usb/gadget/udc/dummy_hcd.c:1837
call_timer_fn+0x15e/0x5e0 kernel/time/timer.c:1322
expire_timers kernel/time/timer.c:1366 [inline]
__run_timers kernel/time/timer.c:1685 [inline]
__run_timers kernel/time/timer.c:1653 [inline]
run_timer_softirq+0x597/0x1410 kernel/time/timer.c:1698
__do_softirq+0x219/0x8b0 kernel/softirq.c:293
invoke_softirq kernel/softirq.c:374 [inline]
irq_exit+0x17c/0x1a0 kernel/softirq.c:414
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0xe2/0x480 arch/x86/kernel/apic/apic.c:1067
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_unlock+0xb00/0xbf0 kernel/printk/printk.c:2466
Code: 24 80 00 00 00 e8 80 e2 ff ff e9 52 fb ff ff e8 86 38 15 00 0f 0b e9 1b fe ff ff e8 7a 38 15 00 e8 25 5e 1a 00 ff 74 24 30 9d 32 fb ff ff e8 96 1c 3b 00 e9 d8 f6 ff ff e8 7c 1c 3b 00 e9 0a
RSP: 0018:ffff8881d4237498 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff1103a845110
RDX: 0000000000000000 RSI: ffff8881d42288d8 RDI: ffff8881d4228834
RBP: 0000000000000001 R08: ffff8881d4228000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000033
R13: ffffffff828c85b0 R14: ffffffff87269fa0 R15: dffffc0000000000
vprintk_emit+0x171/0x3e0 kernel/printk/printk.c:1985
dev_vprintk_emit+0x4fc/0x541 drivers/base/core.c:3190
dev_printk_emit+0xba/0xf1 drivers/base/core.c:3201
__dev_printk+0x1db/0x203 drivers/base/core.c:3213
_dev_info+0xd7/0x109 drivers/base/core.c:3259
usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423
__device_release_driver drivers/base/dd.c:1081 [inline]
device_release_driver_internal+0x404/0x4c0 drivers/base/dd.c:1112
bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556
device_del+0x460/0xb80 drivers/base/core.c:2274
usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237
usb_disconnect+0x284/0x830 drivers/usb/core/hub.c:2197
hub_port_connect drivers/usb/core/hub.c:4940 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
port_event drivers/usb/core/hub.c:5350 [inline]
hub_event+0x1409/0x3590 drivers/usb/core/hub.c:5432
process_one_work+0x905/0x1570 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x30b/0x410 kernel/kthread.c:254
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352