Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   37.456023][ T2466] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   37.696032][ T2466] usb 1-1: Using ep0 maxpacket: 8
[   37.816122][ T2466] usb 1-1: config 0 interface 0 has no altsetting 0
[   37.823206][ T2466] usb 1-1: New USB device found, idVendor=0e41, idProduct=4151, bcdDevice=7a.8f
[   37.832441][ T2466] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   37.842231][ T2466] usb 1-1: config 0 descriptor??
[   37.888309][ T2466] snd_usb_toneport 1-1:0.0: Line 6 POD Studio UX2 found
[   38.206283][ T2466] snd_usb_toneport 1-1:0.0: read request failed (error -110)
[   38.326105][ T2466] snd_usb_toneport 1-1:0.0: read request failed (error -110)
[   38.446051][ T2466] snd_usb_toneport 1-1:0.0: write request failed (error -110)
[   38.566079][ T2466] usb 1-1: send failed (error -110)
[   38.686071][ T2466] usb 1-1: send failed (error -110)
[   38.696192][ T2466] snd_usb_toneport 1-1:0.0: Line 6 POD Studio UX2 now attached
[   39.736516][ T2466] ==================================================================
[   39.744801][ T2466] BUG: KASAN: null-ptr-deref in submit_audio_out_urb+0x919/0x1780
[   39.752579][ T2466] Write of size 20 at addr 0000000000000010 by task kworker/1:2/2466
[   39.760742][ T2466] 
[   39.763057][ T2466] CPU: 1 PID: 2466 Comm: kworker/1:2 Not tainted 5.2.0-rc1+ #9
[   39.770797][ T2466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.781010][ T2466] Workqueue: events toneport_start_pcm
[   39.786650][ T2466] Call Trace:
[   39.789951][ T2466]  dump_stack+0xca/0x13e
[   39.794176][ T2466]  ? submit_audio_out_urb+0x919/0x1780
[   39.799640][ T2466]  ? submit_audio_out_urb+0x919/0x1780
[   39.805081][ T2466]  __kasan_report.cold+0x5/0x32
[   39.810219][ T2466]  ? submit_audio_out_urb+0x919/0x1780
[   39.815665][ T2466]  kasan_report+0xe/0x20
[   39.820062][ T2466]  memset+0x20/0x40
[   39.823866][ T2466]  submit_audio_out_urb+0x919/0x1780
[   39.829264][ T2466]  ? line6_stream_start+0x50/0x1f0
[   39.834385][ T2466]  line6_submit_audio_out_all_urbs+0xc9/0x120
[   39.840442][ T2466]  line6_stream_start+0x156/0x1f0
[   39.845547][ T2466]  line6_pcm_acquire+0x134/0x210
[   39.850593][ T2466]  process_one_work+0x90a/0x1580
[   39.855515][ T2466]  ? pwq_dec_nr_in_flight+0x310/0x310
[   39.860872][ T2466]  ? do_raw_spin_lock+0x11a/0x280
[   39.865895][ T2466]  worker_thread+0x96/0xe20
[   39.870487][ T2466]  ? process_one_work+0x1580/0x1580
[   39.875675][ T2466]  kthread+0x30e/0x420
[   39.879725][ T2466]  ? kthread_park+0x1a0/0x1a0
[   39.884482][ T2466]  ret_from_fork+0x3a/0x50
[   39.888875][ T2466] ==================================================================
[   39.897061][ T2466] Disabling lock debugging due to kernel taint
[   39.903294][ T2466] Kernel panic - not syncing: panic_on_warn set ...
[   39.909868][ T2466] CPU: 1 PID: 2466 Comm: kworker/1:2 Tainted: G    B             5.2.0-rc1+ #9
[   39.918895][ T2466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.929050][ T2466] Workqueue: events toneport_start_pcm
[   39.934615][ T2466] Call Trace:
[   39.937910][ T2466]  dump_stack+0xca/0x13e
[   39.942274][ T2466]  panic+0x292/0x6df
[   39.946145][ T2466]  ? __warn_printk+0xf3/0xf3
[   39.950727][ T2466]  ? lock_downgrade+0x630/0x630
[   39.955568][ T2466]  ? trace_hardirqs_off+0x50/0x1c0
[   39.960676][ T2466]  ? submit_audio_out_urb+0x919/0x1780
[   39.966129][ T2466]  end_report+0x43/0x49
[   39.970363][ T2466]  ? submit_audio_out_urb+0x919/0x1780
[   39.976024][ T2466]  __kasan_report.cold+0xd/0x32
[   39.980974][ T2466]  ? submit_audio_out_urb+0x919/0x1780
[   39.986423][ T2466]  kasan_report+0xe/0x20
[   39.990860][ T2466]  memset+0x20/0x40
[   39.994656][ T2466]  submit_audio_out_urb+0x919/0x1780
[   39.999934][ T2466]  ? line6_stream_start+0x50/0x1f0
[   40.005035][ T2466]  line6_submit_audio_out_all_urbs+0xc9/0x120
[   40.011141][ T2466]  line6_stream_start+0x156/0x1f0
[   40.016154][ T2466]  line6_pcm_acquire+0x134/0x210
[   40.021259][ T2466]  process_one_work+0x90a/0x1580
[   40.026236][ T2466]  ? pwq_dec_nr_in_flight+0x310/0x310
[   40.031610][ T2466]  ? do_raw_spin_lock+0x11a/0x280
[   40.036643][ T2466]  worker_thread+0x96/0xe20
[   40.041221][ T2466]  ? process_one_work+0x1580/0x1580
[   40.046401][ T2466]  kthread+0x30e/0x420
[   40.050651][ T2466]  ? kthread_park+0x1a0/0x1a0
[   40.055315][ T2466]  ret_from_fork+0x3a/0x50
[   40.060159][ T2466] Kernel Offset: disabled
[   40.064481][ T2466] Rebooting in 86400 seconds..