Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   44.363267][   T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   44.603234][   T12] usb 1-1: Using ep0 maxpacket: 8
[   44.723291][   T12] usb 1-1: config 0 has an invalid interface number: 49 but max is 0
[   44.731462][   T12] usb 1-1: config 0 has no interface number 0
[   44.737679][   T12] usb 1-1: config 0 interface 49 has no altsetting 0
[   44.744572][   T12] usb 1-1: New USB device found, idVendor=0e41, idProduct=4150, bcdDevice=72.03
[   44.753723][   T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   44.763661][   T12] usb 1-1: config 0 descriptor??
[   44.805851][   T12] snd_usb_toneport 1-1:0.49: Line 6 POD Studio UX1 found
[   45.123409][   T12] snd_usb_toneport 1-1:0.49: read request failed (error -110)
[   45.323256][   T12] snd_usb_toneport 1-1:0.49: receive length failed (error -110)
[   45.403272][   T12] snd_usb_toneport 1-1:0.49: write failed (error 0)
[   45.523246][   T12] usb 1-1: send failed (error -110)
[   45.643261][   T12] usb 1-1: send failed (error -110)
[   45.653622][   T12] snd_usb_toneport 1-1:0.49: Line 6 POD Studio UX1 now attached
[   46.723656][   T12] ==================================================================
[   46.731824][   T12] BUG: KASAN: null-ptr-deref in submit_audio_out_urb+0x919/0x1780
[   46.739636][   T12] Write of size 20 at addr 0000000000000010 by task kworker/0:1/12
[   46.747529][   T12] 
[   46.750431][   T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc6+ #13
[   46.758848][   T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.768940][   T12] Workqueue: events line6_startup_work
[   46.774475][   T12] Call Trace:
[   46.777766][   T12]  dump_stack+0xca/0x13e
[   46.781997][   T12]  ? submit_audio_out_urb+0x919/0x1780
[   46.787441][   T12]  ? submit_audio_out_urb+0x919/0x1780
[   46.792894][   T12]  __kasan_report.cold+0x5/0x32
[   46.797729][   T12]  ? __mutex_lock+0x301/0x12b0
[   46.802478][   T12]  ? submit_audio_out_urb+0x919/0x1780
[   46.807924][   T12]  kasan_report+0xe/0x20
[   46.812174][   T12]  memset+0x20/0x40
[   46.815986][   T12]  submit_audio_out_urb+0x919/0x1780
[   46.821251][   T12]  ? line6_stream_start+0x50/0x1f0
[   46.826368][   T12]  line6_submit_audio_out_all_urbs+0xc9/0x120
[   46.832425][   T12]  line6_stream_start+0x156/0x1f0
[   46.837440][   T12]  line6_pcm_acquire+0x134/0x210
[   46.842382][   T12]  ? snd_toneport_source_info+0x160/0x160
[   46.848104][   T12]  line6_startup_work+0x42/0x50
[   46.852944][   T12]  process_one_work+0x905/0x1570
[   46.857867][   T12]  ? pwq_dec_nr_in_flight+0x310/0x310
[   46.863216][   T12]  ? do_raw_spin_lock+0x11a/0x280
[   46.868252][   T12]  worker_thread+0x96/0xe20
[   46.872754][   T12]  ? process_one_work+0x1570/0x1570
[   46.877954][   T12]  kthread+0x30b/0x410
[   46.882027][   T12]  ? kthread_park+0x1a0/0x1a0
[   46.886688][   T12]  ret_from_fork+0x24/0x30
[   46.891095][   T12] ==================================================================
[   46.899232][   T12] Disabling lock debugging due to kernel taint
[   46.905380][   T12] Kernel panic - not syncing: panic_on_warn set ...
[   46.911950][   T12] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G    B             5.2.0-rc6+ #13
[   46.920800][   T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.930864][   T12] Workqueue: events line6_startup_work
[   46.936303][   T12] Call Trace:
[   46.939580][   T12]  dump_stack+0xca/0x13e
[   46.943808][   T12]  panic+0x292/0x6c9
[   46.947702][   T12]  ? __warn_printk+0xf3/0xf3
[   46.952274][   T12]  ? lock_downgrade+0x630/0x630
[   46.957109][   T12]  ? trace_hardirqs_off+0x50/0x1c0
[   46.962206][   T12]  ? submit_audio_out_urb+0x919/0x1780
[   46.967654][   T12]  end_report+0x43/0x49
[   46.971824][   T12]  ? submit_audio_out_urb+0x919/0x1780
[   46.977370][   T12]  __kasan_report.cold+0xd/0x32
[   46.982211][   T12]  ? __mutex_lock+0x301/0x12b0
[   46.987080][   T12]  ? submit_audio_out_urb+0x919/0x1780
[   46.992622][   T12]  kasan_report+0xe/0x20
[   46.996850][   T12]  memset+0x20/0x40
[   47.000642][   T12]  submit_audio_out_urb+0x919/0x1780
[   47.005923][   T12]  ? line6_stream_start+0x50/0x1f0
[   47.011014][   T12]  line6_submit_audio_out_all_urbs+0xc9/0x120
[   47.017060][   T12]  line6_stream_start+0x156/0x1f0
[   47.022079][   T12]  line6_pcm_acquire+0x134/0x210
[   47.027024][   T12]  ? snd_toneport_source_info+0x160/0x160
[   47.032857][   T12]  line6_startup_work+0x42/0x50
[   47.037712][   T12]  process_one_work+0x905/0x1570
[   47.042631][   T12]  ? pwq_dec_nr_in_flight+0x310/0x310
[   47.048003][   T12]  ? do_raw_spin_lock+0x11a/0x280
[   47.053010][   T12]  worker_thread+0x96/0xe20
[   47.057509][   T12]  ? process_one_work+0x1570/0x1570
[   47.062707][   T12]  kthread+0x30b/0x410
[   47.066756][   T12]  ? kthread_park+0x1a0/0x1a0
[   47.071422][   T12]  ret_from_fork+0x24/0x30
[   47.076192][   T12] Kernel Offset: disabled
[   47.081325][   T12] Rebooting in 86400 seconds..