[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[ 14.461003][ C1] random: crng init done [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.158' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.737331][ T83] usb 1-1: new full-speed USB device number 2 using dummy_hcd [ 31.096973][ T83] usb 1-1: config 0 has an invalid interface number: 229 but max is 0 [ 31.105229][ T83] usb 1-1: config 0 has no interface number 0 [ 31.111665][ T83] usb 1-1: config 0 interface 229 altsetting 0 endpoint 0x85 has an invalid bInterval 0, changing to 10 [ 31.125288][ T83] usb 1-1: config 0 interface 229 altsetting 0 endpoint 0x1 has an invalid bInterval 0, changing to 10 [ 31.136869][ T83] usb 1-1: New USB device found, idVendor=10cf, idProduct=5500, bcdDevice= d.ee [ 31.145893][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 31.155398][ T83] usb 1-1: config 0 descriptor?? [ 31.210904][ T83] kasan: CONFIG_KASAN_INLINE enabled [ 31.216671][ T83] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.224806][ T83] general protection fault: 0000 [#1] SMP KASAN [ 31.231345][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.3.0-rc5+ #28 [ 31.239193][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.249244][ T83] Workqueue: usb_hub_wq hub_event [ 31.254399][ T83] RIP: 0010:vmk80xx_write_packet+0x75/0x260 [ 31.260282][ T83] 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 [ 31.280426][ T83] RSP: 0018:ffff8881d9387268 EFLAGS: 00010202 [ 31.286612][ T83] RAX: dffffc0000000000 RBX: ffff8881d3fdd900 RCX: 0000000000000000 [ 31.294573][ T83] RDX: 0000000000000002 RSI: ffffffff846c0293 RDI: ffff8881d3fdd968 [ 31.302655][ T83] RBP: ffff8881d32f8f00 R08: ffff8881d9378000 R09: 0000000000000010 [ 31.310619][ T83] R10: fffffbfff11ad7a0 R11: ffffffff88d6bd07 R12: ffff8881d7619980 [ 31.318724][ T83] R13: 0000000000000010 R14: 0000000000000000 R15: ffff8881d9b25968 [ 31.326876][ T83] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 31.335973][ T83] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.342784][ T83] CR2: 00007f0d7a004000 CR3: 00000001d3896000 CR4: 00000000001406e0 [ 31.350842][ T83] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.358920][ T83] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.366886][ T83] Call Trace: [ 31.370168][ T83] vmk80xx_auto_attach+0x13b1/0x17c0 [ 31.375554][ T83] comedi_auto_config+0x16e/0x240 [ 31.380577][ T83] usb_probe_interface+0x305/0x7a0 [ 31.385676][ T83] ? usb_probe_device+0x100/0x100 [ 31.390686][ T83] really_probe+0x281/0x6d0 [ 31.395337][ T83] driver_probe_device+0x101/0x1b0 [ 31.400526][ T83] __device_attach_driver+0x1c2/0x220 [ 31.406013][ T83] ? driver_allows_async_probing+0x160/0x160 [ 31.412113][ T83] bus_for_each_drv+0x162/0x1e0 [ 31.417086][ T83] ? bus_rescan_devices+0x20/0x20 [ 31.422095][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 31.427893][ T83] ? lockdep_hardirqs_on+0x379/0x580 [ 31.433367][ T83] __device_attach+0x217/0x360 [ 31.438226][ T83] ? device_bind_driver+0xd0/0xd0 [ 31.443244][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 31.448786][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 31.454205][ T83] bus_probe_device+0x1e4/0x290 [ 31.459413][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 31.465412][ T83] device_add+0xae6/0x16f0 [ 31.469948][ T83] ? uevent_store+0x50/0x50 [ 31.474559][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 31.480458][ T83] usb_set_configuration+0xdf6/0x1670 [ 31.485820][ T83] generic_probe+0x9d/0xd5 [ 31.490229][ T83] usb_probe_device+0x99/0x100 [ 31.495062][ T83] ? usb_suspend+0x620/0x620 [ 31.499646][ T83] really_probe+0x281/0x6d0 [ 31.504132][ T83] driver_probe_device+0x101/0x1b0 [ 31.509227][ T83] __device_attach_driver+0x1c2/0x220 [ 31.514580][ T83] ? driver_allows_async_probing+0x160/0x160 [ 31.520797][ T83] bus_for_each_drv+0x162/0x1e0 [ 31.525652][ T83] ? bus_rescan_devices+0x20/0x20 [ 31.530667][ T83] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 31.536471][ T83] ? lockdep_hardirqs_on+0x379/0x580 [ 31.541999][ T83] __device_attach+0x217/0x360 [ 31.546850][ T83] ? device_bind_driver+0xd0/0xd0 [ 31.551995][ T83] ? kobject_uevent_env+0x29e/0x1160 [ 31.557272][ T83] ? kobject_uevent_env+0x2a8/0x1160 [ 31.562926][ T83] bus_probe_device+0x1e4/0x290 [ 31.567910][ T83] ? blocking_notifier_call_chain+0x54/0xa0 [ 31.573793][ T83] device_add+0xae6/0x16f0 [ 31.578291][ T83] ? uevent_store+0x50/0x50 [ 31.582948][ T83] usb_new_device.cold+0x6a4/0xe79 [ 31.588050][ T83] hub_event+0x1b5c/0x3640 [ 31.592455][ T83] ? hub_port_debounce+0x260/0x260 [ 31.597639][ T83] process_one_work+0x92b/0x1530 [ 31.602700][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 31.608347][ T83] ? do_raw_spin_lock+0x11a/0x280