BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908
in_atomic(): 1, irqs_disabled(): 0, pid: 5656, name: kworker/0:5
8 locks held by kworker/0:5/5656:
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
 #0: 000000000eb05f56 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81a/0x1580 kernel/workqueue.c:2240
 #1: 00000000d721a2da ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x84e/0x1580 kernel/workqueue.c:2244
 #2: 00000000def07c72 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
 #2: 00000000def07c72 (&dev->mutex){....}, at: hub_event+0x179/0x35a0 drivers/usb/core/hub.c:5378
 #3: 0000000091390a4d (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
 #3: 0000000091390a4d (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:821
 #4: 000000004978d54c (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
 #4: 000000004978d54c (&dev->mutex){....}, at: __device_attach+0x7b/0x360 drivers/base/dd.c:821
 #5: 00000000b7330b33 (&bus->mdio_lock){+.+.}, at: mdiobus_read+0x43/0x70 drivers/net/phy/mdio_bus.c:616
 #6: 0000000066289147 (&dev->phy_mutex){+.+.}, at: asix_mdio_read+0x93/0x250 drivers/net/usb/asix_common.c:465
 #7: 00000000cfb7b13b ((&toneport->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
 #7: 00000000cfb7b13b ((&toneport->timer)){+.-.}, at: call_timer_fn+0xc9/0x5e0 kernel/time/timer.c:1315
CPU: 0 PID: 5656 Comm: kworker/0:5 Not tainted 5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 ___might_sleep.cold+0x10f/0x129 kernel/sched/core.c:6190
 __mutex_lock_common kernel/locking/mutex.c:908 [inline]
 __mutex_lock+0xc8/0x12b0 kernel/locking/mutex.c:1072
 line6_pcm_acquire+0x30/0x210 sound/usb/line6/pcm.c:311
 call_timer_fn+0x15c/0x5e0 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x586/0x1400 kernel/time/timer.c:1694
 __do_softirq+0x21f/0x8bc 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+0xf1/0x490 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:81 [inline]
RIP: 0010:console_unlock+0xab3/0xb70 kernel/printk/printk.c:2456
Code: 24 80 00 00 00 e8 cd e2 ff ff e9 8f fb ff ff e8 f3 01 15 00 0f 0b e9 19 fe ff ff e8 e7 01 15 00 e8 a2 1a 1a 00 ff 74 24 30 9d <e9> 6f fb ff ff e8 b3 94 3a 00 e9 61 f7 ff ff e8 b9 94 3a 00 e9 1b
RSP: 0018:ffff8881cc77e998 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff11039537429
RDX: 0000000000000000 RSI: ffff8881ca9ba128 RDI: ffff8881ca9ba034
RBP: 0000000000000001 R08: ffff8881ca9b9800 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000072
R13: ffffffff828a0a60 R14: 0000000000000001 R15: dffffc0000000000
 vprintk_emit+0x16e/0x3a0 kernel/printk/printk.c:1975
 dev_vprintk_emit+0x509/0x54e drivers/base/core.c:3185
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:3196
 __netdev_printk net/core/dev.c:9600 [inline]
 __netdev_printk+0x1c7/0x27d net/core/dev.c:9596
 netdev_warn+0xd7/0x109 net/core/dev.c:9653
 asix_write_cmd.cold+0x3a/0x46 drivers/net/usb/asix_common.c:64
 asix_set_sw_mii+0x27/0x50 drivers/net/usb/asix_common.c:288
 asix_mdio_read+0xc1/0x250 drivers/net/usb/asix_common.c:467
 __mdiobus_read+0x97/0x2e0 drivers/net/phy/mdio_bus.c:540
 mdiobus_read+0x51/0x70 drivers/net/phy/mdio_bus.c:617
 get_phy_id drivers/net/phy/phy_device.c:794 [inline]
 get_phy_device+0x101/0x450 drivers/net/phy/phy_device.c:819
 mdiobus_scan+0x79/0x340 drivers/net/phy/mdio_bus.c:504
 __mdiobus_register+0x3a3/0x690 drivers/net/phy/mdio_bus.c:403
 ax88172a_init_mdio drivers/net/usb/ax88172a.c:117 [inline]
 ax88172a_bind+0x57e/0x79e drivers/net/usb/ax88172a.c:255
 usbnet_probe+0xb42/0x2480 drivers/net/usb/usbnet.c:1728
 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_new_device.cold+0x8b8/0x1030 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+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x30e/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
==================================================================
BUG: KASAN: null-ptr-deref in memset include/linux/string.h:337 [inline]
BUG: KASAN: null-ptr-deref in submit_audio_out_urb+0x919/0x1780 sound/usb/line6/playback.c:246
Write of size 20 at addr 0000000000000010 by task kworker/0:5/5656

CPU: 0 PID: 5656 Comm: kworker/0:5 Tainted: G        W         5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 kasan_report.cold+0x5/0x35 mm/kasan/report.c:321
 memset+0x20/0x40 mm/kasan/common.c:115
 memset include/linux/string.h:337 [inline]
 submit_audio_out_urb+0x919/0x1780 sound/usb/line6/playback.c:246
 line6_submit_audio_out_all_urbs+0xc9/0x120 sound/usb/line6/playback.c:295
 line6_stream_start+0x156/0x1f0 sound/usb/line6/pcm.c:199
 line6_pcm_acquire+0x134/0x210 sound/usb/line6/pcm.c:322
 call_timer_fn+0x15c/0x5e0 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x586/0x1400 kernel/time/timer.c:1694
 __do_softirq+0x21f/0x8bc 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+0xf1/0x490 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:81 [inline]
RIP: 0010:console_unlock+0xab3/0xb70 kernel/printk/printk.c:2456
Code: 24 80 00 00 00 e8 cd e2 ff ff e9 8f fb ff ff e8 f3 01 15 00 0f 0b e9 19 fe ff ff e8 e7 01 15 00 e8 a2 1a 1a 00 ff 74 24 30 9d <e9> 6f fb ff ff e8 b3 94 3a 00 e9 61 f7 ff ff e8 b9 94 3a 00 e9 1b
RSP: 0018:ffff8881cc77e998 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff11039537429
RDX: 0000000000000000 RSI: ffff8881ca9ba128 RDI: ffff8881ca9ba034
RBP: 0000000000000001 R08: ffff8881ca9b9800 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000072
R13: ffffffff828a0a60 R14: 0000000000000001 R15: dffffc0000000000
 vprintk_emit+0x16e/0x3a0 kernel/printk/printk.c:1975
 dev_vprintk_emit+0x509/0x54e drivers/base/core.c:3185
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:3196
 __netdev_printk net/core/dev.c:9600 [inline]
 __netdev_printk+0x1c7/0x27d net/core/dev.c:9596
 netdev_warn+0xd7/0x109 net/core/dev.c:9653
 asix_write_cmd.cold+0x3a/0x46 drivers/net/usb/asix_common.c:64
 asix_set_sw_mii+0x27/0x50 drivers/net/usb/asix_common.c:288
 asix_mdio_read+0xc1/0x250 drivers/net/usb/asix_common.c:467
 __mdiobus_read+0x97/0x2e0 drivers/net/phy/mdio_bus.c:540
 mdiobus_read+0x51/0x70 drivers/net/phy/mdio_bus.c:617
 get_phy_id drivers/net/phy/phy_device.c:794 [inline]
 get_phy_device+0x101/0x450 drivers/net/phy/phy_device.c:819
 mdiobus_scan+0x79/0x340 drivers/net/phy/mdio_bus.c:504
 __mdiobus_register+0x3a3/0x690 drivers/net/phy/mdio_bus.c:403
 ax88172a_init_mdio drivers/net/usb/ax88172a.c:117 [inline]
 ax88172a_bind+0x57e/0x79e drivers/net/usb/ax88172a.c:255
 usbnet_probe+0xb42/0x2480 drivers/net/usb/usbnet.c:1728
 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_new_device.cold+0x8b8/0x1030 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+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269
 worker_thread+0x96/0xe20 kernel/workqueue.c:2415
 kthread+0x30e/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
==================================================================