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 '10.128.0.47' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.557864][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 26.797835][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 26.917926][ T12] usb 1-1: config 0 has an invalid interface number: 231 but max is 0 [ 26.926180][ T12] usb 1-1: config 0 has no interface number 0 [ 26.932365][ T12] usb 1-1: config 0 interface 231 altsetting 0 endpoint 0x6 has wMaxPacketSize 0, skipping [ 26.946953][ T12] usb 1-1: config 0 interface 231 altsetting 0 endpoint 0x8A has wMaxPacketSize 0, skipping [ 26.957953][ T12] usb 1-1: New USB device found, idVendor=10cf, idProduct=5500, bcdDevice=23.13 [ 26.967410][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.976746][ T12] usb 1-1: config 0 descriptor?? [ 26.998051][ T1720] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 27.005522][ T1720] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 27.031730][ T12] kasan: CONFIG_KASAN_INLINE enabled [ 27.037163][ T12] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.045330][ T12] general protection fault: 0000 [#1] SMP KASAN [ 27.051918][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.4.0-rc6+ #0 [ 27.059395][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.069464][ T12] Workqueue: usb_hub_wq hub_event [ 27.074498][ T12] RIP: 0010:vmk80xx_write_packet+0x75/0x260 [ 27.080384][ T12] Code: 48 8d 7b 68 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d3 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 68 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 84 01 00 00 [ 27.100051][ T12] RSP: 0018:ffff8881da227218 EFLAGS: 00010202 [ 27.106109][ T12] RAX: dffffc0000000000 RBX: ffff8881d1577d00 RCX: 0000000000000000 [ 27.114053][ T12] RDX: 0000000000000002 RSI: ffffffff846f1233 RDI: ffff8881d1577d68 [ 27.122052][ T12] RBP: ffff8881d2691c00 R08: ffff8881da211800 R09: 0000000000000010 [ 27.130146][ T12] R10: fffffbfff11aadb4 R11: ffffffff88d56da7 R12: ffff8881cfe2a000 [ 27.138450][ T12] R13: 0000000000000010 R14: 0000000000000000 R15: ffff8881d1f6e388 [ 27.146615][ T12] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 27.155613][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.162174][ T12] CR2: 00007f8c5a8a0000 CR3: 00000001c7742000 CR4: 00000000001406f0 [ 27.170124][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.178069][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.186013][ T12] Call Trace: [ 27.189305][ T12] vmk80xx_auto_attach+0x13b1/0x17c0 [ 27.194837][ T12] comedi_auto_config+0x16e/0x250 [ 27.200008][ T12] usb_probe_interface+0x305/0x7a0 [ 27.205093][ T12] ? usb_probe_device+0x100/0x100 [ 27.210101][ T12] really_probe+0x281/0x6d0 [ 27.214580][ T12] driver_probe_device+0x104/0x210 [ 27.219663][ T12] __device_attach_driver+0x1c2/0x220 [ 27.225006][ T12] ? driver_allows_async_probing+0x160/0x160 [ 27.230956][ T12] bus_for_each_drv+0x162/0x1e0 [ 27.235780][ T12] ? bus_rescan_devices+0x20/0x20 [ 27.240778][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.246554][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 27.251810][ T12] __device_attach+0x217/0x360 [ 27.257420][ T12] ? device_bind_driver+0xd0/0xd0 [ 27.262417][ T12] ? kobject_uevent_env+0x29e/0x1160 [ 27.267926][ T12] ? kobject_uevent_env+0x2a8/0x1160 [ 27.273221][ T12] bus_probe_device+0x1e4/0x290 [ 27.278050][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 27.284355][ T12] device_add+0xae6/0x16f0 [ 27.288846][ T12] ? uevent_store+0x50/0x50 [ 27.293393][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.299188][ T12] usb_set_configuration+0xdf6/0x1670 [ 27.304553][ T12] generic_probe+0x9d/0xd5 [ 27.308950][ T12] usb_probe_device+0x99/0x100 [ 27.313689][ T12] ? usb_suspend+0x620/0x620 [ 27.318256][ T12] really_probe+0x281/0x6d0 [ 27.322734][ T12] driver_probe_device+0x104/0x210 [ 27.327820][ T12] __device_attach_driver+0x1c2/0x220 [ 27.333165][ T12] ? driver_allows_async_probing+0x160/0x160 [ 27.339117][ T12] bus_for_each_drv+0x162/0x1e0 [ 27.344116][ T12] ? bus_rescan_devices+0x20/0x20 [ 27.349123][ T12] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 27.355507][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 27.360763][ T12] __device_attach+0x217/0x360 [ 27.365509][ T12] ? device_bind_driver+0xd0/0xd0 [ 27.370510][ T12] ? kobject_uevent_env+0x29e/0x1160 [ 27.375784][ T12] ? kobject_uevent_env+0x2a8/0x1160 [ 27.381056][ T12] bus_probe_device+0x1e4/0x290 [ 27.385890][ T12] ? blocking_notifier_call_chain+0x54/0xa0 [ 27.391757][ T12] device_add+0xae6/0x16f0 [ 27.396148][ T12] ? uevent_store+0x50/0x50 [ 27.400662][ T12] usb_new_device.cold+0x6a4/0xe79 [ 27.405756][ T12] hub_event+0x1df8/0x3800 [ 27.411118][ T12] ? hub_port_debounce+0x260/0x260 [ 27.416224][ T12] ? find_held_lock+0x2d/0x110 [ 27.420965][ T12] ? mark_held_locks+0xe0/0xe0 [ 27.425704][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 27.431223][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 27.436493][ T12] process_one_work+0x92b/0x1530 [ 27.441406][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 27.446751][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 27.451761][ T12] worker_thread+0x96/0xe20 [ 27.456243][ T12] ? process_one_work+0x1530/0x1530 [ 27.461761][ T12] kthread+0x318/0x420 [ 27.465812][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 27.471156][ T12] ret_from_fork+0x24/0x30 [ 27.475548][ T12] Modules linked in: [ 27.479520][ T12] ---[ end trace c453485df9aa8