[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. [ 14.094782][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.199' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 23.470190][ T95] usb 1-1: new full-speed USB device number 2 using dummy_hcd [ 23.870225][ T95] usb 1-1: unable to get BOS descriptor or descriptor too short [ 23.910276][ T95] usb 1-1: not running at top speed; connect to a high speed hub [ 23.990232][ T95] usb 1-1: config 31 has an invalid interface number: 68 but max is 3 [ 24.003650][ T95] usb 1-1: config 31 has an invalid interface number: 163 but max is 3 [ 24.012032][ T95] usb 1-1: config 31 has an invalid interface descriptor of length 2, skipping [ 24.021032][ T95] usb 1-1: config 31 has an invalid interface number: 37 but max is 3 [ 24.029258][ T95] usb 1-1: config 31 contains an unexpected descriptor of type 0x1, skipping [ 24.038106][ T95] usb 1-1: config 31 has an invalid interface number: 83 but max is 3 [ 24.046288][ T95] usb 1-1: config 31 contains an unexpected descriptor of type 0x1, skipping [ 24.055074][ T95] usb 1-1: config 31 has no interface number 0 [ 24.061239][ T95] usb 1-1: config 31 has no interface number 1 [ 24.067370][ T95] usb 1-1: config 31 has no interface number 2 [ 24.073544][ T95] usb 1-1: config 31 has no interface number 3 [ 24.079721][ T95] usb 1-1: config 31 interface 163 altsetting 3 endpoint 0x4 has invalid wMaxPacketSize 0 [ 24.089681][ T95] usb 1-1: config 31 interface 163 altsetting 3 has 1 endpoint descriptor, different from the interface descriptor's value: 4 [ 24.102743][ T95] usb 1-1: config 31 interface 37 altsetting 8 endpoint 0xC has invalid maxpacket 1023, setting to 64 [ 24.113700][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0x8, skipping [ 24.124400][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0x1, skipping [ 24.135103][ T95] usb 1-1: config 31 interface 37 altsetting 8 endpoint 0xF has an invalid bInterval 255, changing to 4 [ 24.146261][ T95] usb 1-1: config 31 interface 37 altsetting 8 endpoint 0xF has invalid maxpacket 1024, setting to 1023 [ 24.157450][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0x2, skipping [ 24.168147][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0x2, skipping [ 24.178871][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0xC, skipping [ 24.189560][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0xF, skipping [ 24.200282][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0xC, skipping [ 24.211018][ T95] usb 1-1: config 31 interface 37 altsetting 8 has a duplicate endpoint with address 0x2, skipping [ 24.222117][ T95] usb 1-1: config 31 interface 83 altsetting 2 has a duplicate endpoint with address 0x1, skipping [ 24.232853][ T95] usb 1-1: config 31 interface 83 altsetting 2 endpoint 0xA has invalid maxpacket 88, setting to 64 [ 24.243675][ T95] usb 1-1: config 31 interface 83 altsetting 2 endpoint 0xB has invalid maxpacket 512, setting to 64 [ 24.254560][ T95] usb 1-1: config 31 interface 83 altsetting 2 has a duplicate endpoint with address 0xA, skipping [ 24.265299][ T95] usb 1-1: config 31 interface 83 altsetting 2 has a duplicate endpoint with address 0x9, skipping [ 24.276074][ T95] usb 1-1: config 31 interface 83 altsetting 2 has a duplicate endpoint with address 0x2, skipping [ 24.286820][ T95] usb 1-1: config 31 interface 68 has no altsetting 0 [ 24.293607][ T95] usb 1-1: config 31 interface 163 has no altsetting 0 [ 24.300491][ T95] usb 1-1: config 31 interface 37 has no altsetting 0 [ 24.307249][ T95] usb 1-1: config 31 interface 83 has no altsetting 0 [ 24.560244][ T95] usb 1-1: string descriptor 0 read error: -22 [ 24.566473][ T95] usb 1-1: New USB device found, idVendor=04bb, idProduct=0a0e, bcdDevice=73.44 [ 24.575540][ T95] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 24.621947][ T95] pl2303 1-1:31.68: required endpoints missing [ 24.633275][ T95] pl2303 1-1:31.163: required endpoints missing [ 24.641761][ T95] pl2303 1-1:31.37: required endpoints missing [ 24.648876][ T95] hwa-hc 1-1:31.37: Wire Adapter v219.213 newer than groked v1.0 [ 24.657305][ T95] hwa-hc 1-1:31.37: FIXME: USB_MAXCHILDREN too low for WUSB adapter (62 ports) [ 24.666431][ T95] ------------[ cut here ]------------ [ 24.671878][ T95] WARNING: CPU: 0 PID: 95 at lib/vsprintf.c:2512 vsnprintf+0xf46/0x14f0 [ 24.680182][ T95] Kernel panic - not syncing: panic_on_warn set ... [ 24.686753][ T95] CPU: 0 PID: 95 Comm: kworker/0:2 Not tainted 5.6.0-rc5-syzkaller #0 [ 24.694884][ T95] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.704941][ T95] Workqueue: usb_hub_wq hub_event [ 24.709946][ T95] Call Trace: [ 24.713218][ T95] dump_stack+0xef/0x16e [ 24.717440][ T95] ? vsnprintf+0xf40/0x14f0 [ 24.721923][ T95] panic+0x2aa/0x6e1 [ 24.725796][ T95] ? add_taint.cold+0x16/0x16 [ 24.730452][ T95] ? printk+0xba/0xed [ 24.734415][ T95] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 24.739860][ T95] ? __warn.cold+0x14/0x30 [ 24.744268][ T95] ? __warn+0xd5/0x1c8 [ 24.748314][ T95] ? vsnprintf+0xf46/0x14f0 [ 24.753318][ T95] __warn.cold+0x2f/0x30 [ 24.757539][ T95] ? vsnprintf+0xf46/0x14f0 [ 24.762021][ T95] report_bug+0x27b/0x2f0 [ 24.766348][ T95] do_error_trap+0x12b/0x1e0 [ 24.770937][ T95] ? vsnprintf+0xf46/0x14f0 [ 24.775418][ T95] do_invalid_op+0x32/0x40 [ 24.779808][ T95] ? vsnprintf+0xf46/0x14f0 [ 24.784289][ T95] invalid_op+0x23/0x30 [ 24.788427][ T95] RIP: 0010:vsnprintf+0xf46/0x14f0 [ 24.793515][ T95] Code: 10 83 c5 08 41 89 2f e8 f8 34 b3 fb 4c 89 f0 48 c1 e8 03 80 3c 18 00 0f 85 38 04 00 00 4d 8b 36 e9 bb f2 ff ff e8 da 34 b3 fb <0f> 0b 45 31 ed e9 71 f3 ff ff e8 cb 34 b3 fb 4c 89 e8 4c 89 ea 48 [ 24.813112][ T95] RSP: 0018:ffff8881d58c6fc8 EFLAGS: 00010293 [ 24.819167][ T95] RAX: ffff8881d7976200 RBX: fffffffffffffff7 RCX: ffffffff858c1258 [ 24.827132][ T95] RDX: 0000000000000000 RSI: ffffffff858c2106 RDI: 0000000000000007 [ 24.835088][ T95] RBP: ffffffff86881480 R08: ffff8881d7976200 R09: ffffed103ab18e4e [ 24.843041][ T95] R10: ffffed103ab18e4d R11: ffff8881d58c7269 R12: ffff8881d58c7279 [ 24.851037][ T95] R13: fffffffffffffff7 R14: ffffffff86881480 R15: ffff8881d58c70c8 [ 24.859002][ T95] ? vsnprintf+0x98/0x14f0 [ 24.863424][ T95] ? vsnprintf+0xf46/0x14f0 [ 24.867907][ T95] ? vsnprintf+0xf46/0x14f0 [ 24.872387][ T95] ? pointer+0x680/0x680 [ 24.876607][ T95] ? __dev_printk+0x1db/0x203 [ 24.881276][ T95] snprintf+0xbb/0xf0 [ 24.885234][ T95] ? vsprintf+0x30/0x30 [ 24.889367][ T95] ? debug_object_fixup+0x30/0x30 [ 24.894382][ T95] ? lockdep_init_map+0x1b0/0x5e0 [ 24.899393][ T95] ? __usb_get_extra_descriptor+0x15d/0x1a0 [ 24.905263][ T95] hwahc_probe+0xfd6/0x1490 [ 24.909742][ T95] ? __hwahc_op_mmcie_add+0x1e0/0x1e0 [ 24.915090][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 24.920352][ T95] ? __pm_runtime_resume+0x111/0x180 [ 24.925702][ T95] usb_probe_interface+0x310/0x800 [ 24.930803][ T95] ? usb_probe_device+0x230/0x230 [ 24.935815][ T95] really_probe+0x290/0xac0 [ 24.940310][ T95] driver_probe_device+0x223/0x350 [ 24.945395][ T95] __device_attach_driver+0x1d1/0x290 [ 24.950743][ T95] ? driver_allows_async_probing+0x160/0x160 [ 24.956700][ T95] bus_for_each_drv+0x162/0x1e0 [ 24.961526][ T95] ? bus_rescan_devices+0x20/0x20 [ 24.966528][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 24.972329][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 24.977600][ T95] __device_attach+0x217/0x390 [ 24.982348][ T95] ? device_bind_driver+0xd0/0xd0 [ 24.987369][ T95] bus_probe_device+0x1e4/0x290 [ 24.992201][ T95] device_add+0x1459/0x1bf0 [ 24.996683][ T95] ? device_link_remove+0x110/0x110 [ 25.001880][ T95] ? create_intf_ep_devs+0x1ba/0x230 [ 25.007157][ T95] usb_set_configuration+0xe47/0x17d0 [ 25.012592][ T95] usb_generic_driver_probe+0x9d/0xe0 [ 25.017965][ T95] usb_probe_device+0xd9/0x230 [ 25.022754][ T95] ? usb_suspend+0x5f0/0x5f0 [ 25.027327][ T95] really_probe+0x290/0xac0 [ 25.031813][ T95] driver_probe_device+0x223/0x350 [ 25.036905][ T95] __device_attach_driver+0x1d1/0x290 [ 25.042259][ T95] ? driver_allows_async_probing+0x160/0x160 [ 25.048342][ T95] bus_for_each_drv+0x162/0x1e0 [ 25.053171][ T95] ? bus_rescan_devices+0x20/0x20 [ 25.058211][ T95] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 25.064043][ T95] ? lockdep_hardirqs_on+0x382/0x580 [ 25.069342][ T95] __device_attach+0x217/0x390 [ 25.074082][ T95] ? device_bind_driver+0xd0/0xd0 [ 25.079112][ T95] bus_probe_device+0x1e4/0x290 [ 25.084037][ T95] device_add+0x1459/0x1bf0 [ 25.088663][ T95] ? device_link_remove+0x110/0x110 [ 25.093853][ T95] usb_new_device.cold+0x540/0xcd0 [ 25.098982][ T95] hub_event+0x21cb/0x4300 [ 25.103420][ T95] ? hub_port_debounce+0x350/0x350 [ 25.108512][ T95] ? find_held_lock+0x2d/0x110 [ 25.113253][ T95] ? mark_held_locks+0xe0/0xe0 [ 25.118012][ T95] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 25.123535][ T95] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 25.128798][ T95] process_one_work+0x94b/0x1620 [ 25.133713][ T95] ? pwq_dec_nr_in_flight+0x310/0x310 [ 25.139061][ T95] ? do_raw_spin_lock+0x129/0x290 [ 25.144061][ T95] worker_thread+0x96/0xe20 [ 25.148541][ T95] ? process_one_work+0x1620/0x1620 [ 25.153713][ T95] kthread+0x318/0x420 [ 25.157758][ T95] ? kthread_create_on_node+0xf0/0xf0 [ 25.163110][ T95] ret_from_fork+0x24/0x30 [ 25.168196][ T95] Kernel Offset: disabled [ 25.172544][ T95] Rebooting in 86400 seconds..