Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   54.873601][   T17] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   55.113579][   T17] usb 1-1: Using ep0 maxpacket: 8
[   55.233646][   T17] usb 1-1: config 9 has an invalid interface number: 108 but max is 0
[   55.241923][   T17] usb 1-1: config 9 has an invalid descriptor of length 17, skipping remainder of the config
[   55.252385][   T17] usb 1-1: config 9 has no interface number 0
[   55.258547][   T17] usb 1-1: config 9 interface 108 altsetting 2 endpoint 0x5 has invalid maxpacket 1787, setting to 64
[   55.269783][   T17] usb 1-1: config 9 interface 108 altsetting 2 has 1 endpoint descriptor, different from the interface descriptor's value: 2
[   55.282769][   T17] usb 1-1: config 9 interface 108 has no altsetting 0
[   55.289756][   T17] usb 1-1: New USB device found, idVendor=0e41, idProduct=4150, bcdDevice=20.8a
[   55.298805][   T17] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   55.345638][   T17] snd_usb_toneport 1-1:9.108: Line 6 POD Studio UX1 found
[   55.663769][   T17] snd_usb_toneport 1-1:9.108: read request failed (error -110)
[   55.783617][   T17] snd_usb_toneport 1-1:9.108: read request failed (error -110)
[   55.903612][   T17] snd_usb_toneport 1-1:9.108: write request failed (error -110)
[   56.023602][   T17] usb 1-1: send failed (error -110)
[   56.143628][   T17] usb 1-1: send failed (error -110)
[   56.151765][   T17] snd_usb_toneport 1-1:9.108: Line 6 POD Studio UX1 now attached
[   57.153981][   T17] ==================================================================
[   57.162118][   T17] BUG: KASAN: null-ptr-deref in submit_audio_out_urb+0x919/0x1780
[   57.169893][   T17] Write of size 20 at addr 0000000000000010 by task kworker/1:0/17
[   57.177969][   T17] 
[   57.180282][   T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.2.0-rc1+ #10
[   57.187714][   T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.198171][   T17] Workqueue: events toneport_start_pcm
[   57.203612][   T17] Call Trace:
[   57.207016][   T17]  dump_stack+0xca/0x13e
[   57.211251][   T17]  ? submit_audio_out_urb+0x919/0x1780
[   57.216728][   T17]  ? submit_audio_out_urb+0x919/0x1780
[   57.222358][   T17]  __kasan_report.cold+0x5/0x32
[   57.228337][   T17]  ? submit_audio_out_urb+0x919/0x1780
[   57.233782][   T17]  kasan_report+0xe/0x20
[   57.238005][   T17]  memset+0x20/0x40
[   57.241799][   T17]  submit_audio_out_urb+0x919/0x1780
[   57.247062][   T17]  ? line6_stream_start+0x50/0x1f0
[   57.252147][   T17]  line6_submit_audio_out_all_urbs+0xc9/0x120
[   57.258536][   T17]  line6_stream_start+0x156/0x1f0
[   57.263543][   T17]  line6_pcm_acquire+0x134/0x210
[   57.268611][   T17]  process_one_work+0x905/0x1570
[   57.273625][   T17]  ? pwq_dec_nr_in_flight+0x310/0x310
[   57.278986][   T17]  ? do_raw_spin_lock+0x11a/0x280
[   57.284158][   T17]  worker_thread+0x96/0xe20
[   57.288656][   T17]  ? process_one_work+0x1570/0x1570
[   57.293957][   T17]  kthread+0x30b/0x410
[   57.298090][   T17]  ? kthread_park+0x1a0/0x1a0
[   57.302779][   T17]  ret_from_fork+0x24/0x30
[   57.307174][   T17] ==================================================================
[   57.315211][   T17] Disabling lock debugging due to kernel taint
[   57.321349][   T17] Kernel panic - not syncing: panic_on_warn set ...
[   57.327925][   T17] CPU: 1 PID: 17 Comm: kworker/1:0 Tainted: G    B             5.2.0-rc1+ #10
[   57.336749][   T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.346806][   T17] Workqueue: events toneport_start_pcm
[   57.352246][   T17] Call Trace:
[   57.355766][   T17]  dump_stack+0xca/0x13e
[   57.359996][   T17]  panic+0x292/0x6c9
[   57.363873][   T17]  ? __warn_printk+0xf3/0xf3
[   57.368446][   T17]  ? lock_downgrade+0x630/0x630
[   57.373381][   T17]  ? trace_hardirqs_off+0x50/0x1c0
[   57.378493][   T17]  ? submit_audio_out_urb+0x919/0x1780
[   57.383936][   T17]  end_report+0x43/0x49
[   57.388070][   T17]  ? submit_audio_out_urb+0x919/0x1780
[   57.393508][   T17]  __kasan_report.cold+0xd/0x32
[   57.398332][   T17]  ? submit_audio_out_urb+0x919/0x1780
[   57.403762][   T17]  kasan_report+0xe/0x20
[   57.407980][   T17]  memset+0x20/0x40
[   57.411768][   T17]  submit_audio_out_urb+0x919/0x1780
[   57.417032][   T17]  ? line6_stream_start+0x50/0x1f0
[   57.422113][   T17]  line6_submit_audio_out_all_urbs+0xc9/0x120
[   57.428374][   T17]  line6_stream_start+0x156/0x1f0
[   57.433388][   T17]  line6_pcm_acquire+0x134/0x210
[   57.438412][   T17]  process_one_work+0x905/0x1570
[   57.443344][   T17]  ? pwq_dec_nr_in_flight+0x310/0x310
[   57.448798][   T17]  ? do_raw_spin_lock+0x11a/0x280
[   57.453817][   T17]  worker_thread+0x96/0xe20
[   57.458306][   T17]  ? process_one_work+0x1570/0x1570
[   57.463625][   T17]  kthread+0x30b/0x410
[   57.467672][   T17]  ? kthread_park+0x1a0/0x1a0
[   57.472324][   T17]  ret_from_fork+0x24/0x30
[   57.477348][   T17] Kernel Offset: disabled
[   57.481660][   T17] Rebooting in 86400 seconds..