BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908
in_atomic(): 1, irqs_disabled(): 0, pid: 4667, name: syz-executor.2
1 lock held by syz-executor.2/4667:
 #0: 00000000f38db16f ((&toneport->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
 #0: 00000000f38db16f ((&toneport->timer)){+.-.}, at: call_timer_fn+0xc9/0x5e0 kernel/time/timer.c:1315
CPU: 0 PID: 4667 Comm: syz-executor.2 Not tainted 5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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: 0033:0x402781
Code: 00 48 83 c4 08 5b 5d c3 90 48 83 ec 28 bf 01 00 00 00 48 89 e6 64 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 e8 2f 99 05 00 <85> c0 75 37 48 ba db 34 b6 d7 82 de 1b 43 48 89 d0 48 f7 64 24 08
RSP: 002b:00007ffdbfb5d210 EFLAGS: 00000207 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000024ee7 RCX: 000000000045c0ba
RDX: 0000000000000000 RSI: 00007ffdbfb5d210 RDI: 0000000000000001
RBP: 000000000000005d R08: 0000000000000001 R09: 0000000000d38940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffdbfb5d270 R14: 00000000000246e7 R15: 00007ffdbfb5d280
==================================================================
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 syz-executor.2/4667

CPU: 0 PID: 4667 Comm: syz-executor.2 Tainted: G        W         5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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: 0033:0x402781
Code: 00 48 83 c4 08 5b 5d c3 90 48 83 ec 28 bf 01 00 00 00 48 89 e6 64 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 e8 2f 99 05 00 <85> c0 75 37 48 ba db 34 b6 d7 82 de 1b 43 48 89 d0 48 f7 64 24 08
RSP: 002b:00007ffdbfb5d210 EFLAGS: 00000207 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000024ee7 RCX: 000000000045c0ba
RDX: 0000000000000000 RSI: 00007ffdbfb5d210 RDI: 0000000000000001
RBP: 000000000000005d R08: 0000000000000001 R09: 0000000000d38940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffdbfb5d270 R14: 00000000000246e7 R15: 00007ffdbfb5d280
==================================================================