BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908
in_atomic(): 1, irqs_disabled(): 0, pid: 4669, name: syz-executor.5
1 lock held by syz-executor.5/4669:
 #0: 0000000095ee9465 ((&toneport->timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:170 [inline]
 #0: 0000000095ee9465 ((&toneport->timer)){+.-.}, at: call_timer_fn+0xc9/0x5e0 kernel/time/timer.c:1315
CPU: 0 PID: 4669 Comm: syz-executor.5 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: 0033:0x40d037
Code: 00 e8 4d 57 ff ff 49 89 c6 48 8b 05 7b 34 66 00 4c 89 f3 44 8b 20 eb 48 0f 1f 00 bf e8 03 00 00 e8 ce c1 04 00 e8 29 57 ff ff <48> 8b 15 5a 34 66 00 8b 0a 48 89 c2 41 39 cc 48 0f 45 d8 4c 29 f2
RSP: 002b:00007ffc46a827f0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: 0000000000092f39 RBX: 0000000000092e16 RCX: 0000000000092ba8
RDX: 0000000000000391 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000263 R08: 0000000000000001 R09: 0000000000c2c940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc46a82820 R14: 0000000000092e16 R15: 00007ffc46a82830
==================================================================
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.5/4669

CPU: 0 PID: 4669 Comm: syz-executor.5 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: 0033:0x40d037
Code: 00 e8 4d 57 ff ff 49 89 c6 48 8b 05 7b 34 66 00 4c 89 f3 44 8b 20 eb 48 0f 1f 00 bf e8 03 00 00 e8 ce c1 04 00 e8 29 57 ff ff <48> 8b 15 5a 34 66 00 8b 0a 48 89 c2 41 39 cc 48 0f 45 d8 4c 29 f2
RSP: 002b:00007ffc46a827f0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: 0000000000092f39 RBX: 0000000000092e16 RCX: 0000000000092ba8
RDX: 0000000000000391 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000263 R08: 0000000000000001 R09: 0000000000c2c940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc46a82820 R14: 0000000000092e16 R15: 00007ffc46a82830
==================================================================