INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.47' (ECDSA) to the list of known hosts. syzkaller login: [ 32.768515][ T102] usb 1-1: new full-speed USB device number 2 using dummy_hcd [ 33.128607][ T102] usb 1-1: config 0 has an invalid interface number: 89 but max is 0 [ 33.136842][ T102] usb 1-1: config 0 has no interface number 0 [ 33.143163][ T102] usb 1-1: New USB device found, idVendor=07fd, idProduct=0004, bcdDevice=dc.94 [ 33.152373][ T102] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 33.161695][ T102] usb 1-1: config 0 descriptor?? [ 33.200737][ T102] usb 1-1: Waiting for MOTU Microbook II to boot up... [ 33.207724][ T102] kasan: CONFIG_KASAN_INLINE enabled [ 33.213111][ T102] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.221202][ T102] general protection fault: 0000 [#1] SMP KASAN [ 33.227582][ T102] CPU: 1 PID: 102 Comm: kworker/1:2 Not tainted 5.3.0-rc2+ #25 [ 33.235424][ T102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.245477][ T102] Workqueue: usb_hub_wq hub_event [ 33.250485][ T102] RIP: 0010:snd_usb_pipe_sanity_check+0x80/0x130 [ 33.256991][ T102] Code: 48 c1 ea 03 80 3c 02 00 0f 85 b3 00 00 00 48 8b 6d 00 c1 eb 1e 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 03 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 7b 48 b8 00 00 [ 33.276698][ T102] RSP: 0018:ffff8881d507f010 EFLAGS: 00010246 [ 33.282811][ T102] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff8496a5a2 [ 33.290775][ T102] RDX: 0000000000000000 RSI: ffffffff8496a5bc RDI: 0000000000000003 [ 33.298726][ T102] RBP: 0000000000000000 R08: ffff8881d57a1800 R09: ffffed103b665d58 [ 33.306747][ T102] R10: ffffed103b665d57 R11: ffff8881db32eabf R12: 0000000000000000 [ 33.314704][ T102] R13: ffff8881d3ec8a80 R14: 1ffff1103aa0fe06 R15: ffff8881d2910920 [ 33.322840][ T102] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 33.331893][ T102] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.338846][ T102] CR2: 00000000011e3fd0 CR3: 00000001d4251000 CR4: 00000000001406e0 [ 33.346793][ T102] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.354953][ T102] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.362902][ T102] Call Trace: [ 33.366176][ T102] snd_usb_motu_microbookii_communicate.constprop.0+0xa0/0x2fb [ 33.373831][ T102] ? create_standard_audio_quirk.cold+0x77/0x77 [ 33.380052][ T102] snd_usb_apply_boot_quirk.cold+0x163/0x370 [ 33.386016][ T102] ? snd_usb_apply_interface_quirk+0x5f0/0x5f0 [ 33.392152][ T102] ? mark_lock+0xbc/0x1130 [ 33.396541][ T102] ? __lock_acquire+0x145e/0x3b50 [ 33.401654][ T102] ? mark_lock+0xbc/0x1130 [ 33.406059][ T102] usb_audio_probe+0x2ec/0x2010 [ 33.410891][ T102] ? usb_audio_resume+0x20/0x20 [ 33.415827][ T102] ? mark_held_locks+0x9f/0xe0 [ 33.420580][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 33.426373][ T102] usb_probe_interface+0x305/0x7a0 [ 33.431467][ T102] ? usb_probe_device+0x100/0x100 [ 33.436469][ T102] really_probe+0x281/0x650 [ 33.440954][ T102] driver_probe_device+0x101/0x1b0 [ 33.446049][ T102] __device_attach_driver+0x1c2/0x220 [ 33.451399][ T102] ? driver_allows_async_probing+0x160/0x160 [ 33.457359][ T102] bus_for_each_drv+0x15c/0x1e0 [ 33.462297][ T102] ? bus_rescan_devices+0x20/0x20 [ 33.467307][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 33.473156][ T102] ? lockdep_hardirqs_on+0x379/0x580 [ 33.478427][ T102] __device_attach+0x217/0x360 [ 33.483168][ T102] ? device_bind_driver+0xd0/0xd0 [ 33.488167][ T102] ? kobject_uevent_env+0x29e/0x1160 [ 33.493536][ T102] ? kobject_uevent_env+0x2a8/0x1160 [ 33.498934][ T102] bus_probe_device+0x1e4/0x290 [ 33.503775][ T102] ? blocking_notifier_call_chain+0x54/0xa0 [ 33.509640][ T102] device_add+0xae6/0x16f0 [ 33.514030][ T102] ? uevent_store+0x50/0x50 [ 33.518510][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 33.524460][ T102] usb_set_configuration+0xdf6/0x1670 [ 33.529925][ T102] generic_probe+0x9d/0xd5 [ 33.534609][ T102] usb_probe_device+0x99/0x100 [ 33.539347][ T102] ? usb_suspend+0x620/0x620 [ 33.543913][ T102] really_probe+0x281/0x650 [ 33.548396][ T102] driver_probe_device+0x101/0x1b0 [ 33.553607][ T102] __device_attach_driver+0x1c2/0x220 [ 33.559035][ T102] ? driver_allows_async_probing+0x160/0x160 [ 33.565070][ T102] bus_for_each_drv+0x15c/0x1e0 [ 33.569903][ T102] ? bus_rescan_devices+0x20/0x20 [ 33.574905][ T102] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 33.580807][ T102] ? lockdep_hardirqs_on+0x379/0x580 [ 33.586142][ T102] __device_attach+0x217/0x360 [ 33.590899][ T102] ? device_bind_driver+0xd0/0xd0 [ 33.595911][ T102] ? kobject_uevent_env+0x29e/0x1160 [ 33.601169][ T102] ? kobject_uevent_env+0x2a8/0x1160 [ 33.606479][ T102] bus_probe_device+0x1e4/0x290 [ 33.611314][ T102] ? blocking_notifier_call_chain+0x54/0xa0 [ 33.617193][ T102] device_add+0xae6/0x16f0 [ 33.621586][ T102] ? uevent_store+0x50/0x50 [ 33.626063][ T102] usb_new_device.cold+0x6a4/0xe79 [ 33.631295][ T102] hub_event+0x1b5c/0x3640 [ 33.635686][ T102] ? hub_port_debounce+0x260/0x260 [ 33.640770][ T102] process_one_work+0x92b/0x1530 [ 33.645697][ T102] ? pwq_dec_nr_in_flight+0x310/0x310 [ 33.651057][ T102]