BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908
in_atomic(): 1, irqs_disabled(): 0, pid: 5, name: kworker/0:0
5 locks held by kworker/0:0/5:
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
 #0: 00000000651b9ebc ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x81a/0x1580 kernel/workqueue.c:2240
 #1: 000000001b1c9fcb ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x84e/0x1580 kernel/workqueue.c:2244
 #2: 00000000d7965fa9 (&dev->mutex){....}, at: device_lock include/linux/device.h:1207 [inline]
 #2: 00000000d7965fa9 (&dev->mutex){....}, at: hub_event+0x179/0x35a0 drivers/usb/core/hub.c:5378
 #3: 000000002892c99b (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1699 [inline]
 #3: 000000002892c99b (console_lock){+.+.}, at: vprintk_emit+0x155/0x3a0 kernel/printk/printk.c:1974
 #4: 00000000d43185f1 ((&toneport->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
 #4: 00000000d43185f1 ((&toneport->timer)){+.-.}, at: call_timer_fn+0xc9/0x5e0 kernel/time/timer.c:1315
CPU: 0 PID: 5 Comm: kworker/0:0 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+0x98e/0xb70 kernel/printk/printk.c:2460
Code: 00 89 ee 48 c7 c7 40 24 d3 86 e8 cd a4 03 00 65 ff 0d 06 79 da 7e e9 5e fa ff ff e8 0c 03 15 00 e8 c7 1b 1a 00 ff 74 24 30 9d <e9> 2d fe ff ff e8 f8 02 15 00 48 8b bc 24 80 00 00 00 c7 05 e6 48
RSP: 0018:ffff8881d9dc7620 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff1103b3b0d1a
RDX: 0000000000000000 RSI: ffff8881d9d868b0 RDI: ffff8881d9d86834
RBP: 0000000000000000 R08: ffff8881d9d86000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000059
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
 __dev_printk+0x1e8/0x210 drivers/base/core.c:3208
 _dev_info+0xd7/0x109 drivers/base/core.c:3254
 announce_device drivers/usb/core/hub.c:2260 [inline]
 usb_new_device.cold+0x564/0x1030 drivers/usb/core/hub.c:2514
 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/0:0/5

CPU: 0 PID: 5 Comm: kworker/0:0 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+0x98e/0xb70 kernel/printk/printk.c:2460
Code: 00 89 ee 48 c7 c7 40 24 d3 86 e8 cd a4 03 00 65 ff 0d 06 79 da 7e e9 5e fa ff ff e8 0c 03 15 00 e8 c7 1b 1a 00 ff 74 24 30 9d <e9> 2d fe ff ff e8 f8 02 15 00 48 8b bc 24 80 00 00 00 c7 05 e6 48
RSP: 0018:ffff8881d9dc7620 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff1103b3b0d1a
RDX: 0000000000000000 RSI: ffff8881d9d868b0 RDI: ffff8881d9d86834
RBP: 0000000000000000 R08: ffff8881d9d86000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000059
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
 __dev_printk+0x1e8/0x210 drivers/base/core.c:3208
 _dev_info+0xd7/0x109 drivers/base/core.c:3254
 announce_device drivers/usb/core/hub.c:2260 [inline]
 usb_new_device.cold+0x564/0x1030 drivers/usb/core/hub.c:2514
 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
==================================================================