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 '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.596362][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 40.686541][ T94] usb 1-1: Using ep0 maxpacket: 16 [ 40.846401][ T94] usb 1-1: unable to get BOS descriptor or descriptor too short [ 40.926405][ T94] usb 1-1: config 7 has an invalid interface number: 138 but max is 0 [ 40.934726][ T94] usb 1-1: config 7 has an invalid interface association descriptor of length 2, skipping [ 40.944703][ T94] usb 1-1: config 7 has no interface number 0 [ 40.950822][ T94] usb 1-1: config 7 interface 138 altsetting 128 has a duplicate endpoint with address 0x4, skipping [ 40.961704][ T94] usb 1-1: config 7 interface 138 altsetting 128 endpoint 0xD has an invalid bInterval 176, changing to 11 [ 40.973107][ T94] usb 1-1: config 7 interface 138 altsetting 128 endpoint 0x3 has invalid maxpacket 1024, setting to 64 [ 40.984293][ T94] usb 1-1: config 7 interface 138 altsetting 128 endpoint 0x9 has invalid maxpacket 1023, setting to 64 [ 40.995447][ T94] usb 1-1: config 7 interface 138 altsetting 128 endpoint 0xF has invalid maxpacket 512, setting to 64 [ 41.006509][ T94] usb 1-1: config 7 interface 138 altsetting 128 has a duplicate endpoint with address 0x4, skipping [ 41.017394][ T94] usb 1-1: config 7 interface 138 altsetting 128 endpoint 0x5 has invalid maxpacket 1024, setting to 64 [ 41.028532][ T94] usb 1-1: config 7 interface 138 altsetting 128 has a duplicate endpoint with address 0x9, skipping [ 41.039406][ T94] usb 1-1: config 7 interface 138 has no altsetting 0 [ 41.206417][ T94] usb 1-1: New USB device found, idVendor=0711, idProduct=0900, bcdDevice=99.a3 [ 41.215575][ T94] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 41.223608][ T94] usb 1-1: Product: syz [ 41.227845][ T94] usb 1-1: Manufacturer: syz [ 41.232456][ T94] usb 1-1: SerialNumber: syz executing program [ 41.517680][ T94] usb 1-1: USB2VGA dongle found at address 2 [ 41.525786][ T94] usb 1-1: Allocated 8 output buffers [ 41.531268][ T94] ------------[ cut here ]------------ [ 41.536743][ T94] usb 1-1: BOGUS urb xfer, pipe 3 != type 1 [ 41.542742][ T94] WARNING: CPU: 0 PID: 94 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x1460 [ 41.552184][ T94] Kernel panic - not syncing: panic_on_warn set ... [ 41.558751][ T94] CPU: 0 PID: 94 Comm: kworker/0:2 Not tainted 5.6.0-rc3-syzkaller #0 [ 41.566905][ T94] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.576970][ T94] Workqueue: usb_hub_wq hub_event [ 41.581971][ T94] Call Trace: [ 41.585241][ T94] dump_stack+0xef/0x16e [ 41.589478][ T94] ? usb_submit_urb+0x1090/0x1460 [ 41.594497][ T94] panic+0x2aa/0x6e1 [ 41.598385][ T94] ? add_taint.cold+0x16/0x16 [ 41.603039][ T94] ? __probe_kernel_read+0x188/0x1d0 [ 41.608298][ T94] ? __warn.cold+0x14/0x30 [ 41.612693][ T94] ? __warn+0xd5/0x1c8 [ 41.616740][ T94] ? usb_submit_urb+0x1188/0x1460 [ 41.621756][ T94] __warn.cold+0x2f/0x30 [ 41.625991][ T94] ? usb_submit_urb+0x1188/0x1460 [ 41.630990][ T94] report_bug+0x27b/0x2f0 [ 41.635312][ T94] do_error_trap+0x12b/0x1e0 [ 41.639897][ T94] ? usb_submit_urb+0x1188/0x1460 [ 41.644900][ T94] do_invalid_op+0x32/0x40 [ 41.649295][ T94] ? usb_submit_urb+0x1188/0x1460 [ 41.654303][ T94] invalid_op+0x23/0x30 [ 41.658447][ T94] RIP: 0010:usb_submit_urb+0x1188/0x1460 [ 41.664073][ T94] Code: 4d 85 ed 74 46 e8 18 ce dd fd 4c 89 f7 e8 d0 5c 17 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 e0 e7 3b 86 e8 a0 5f b2 fd <0f> 0b e9 20 f4 ff ff e8 ec cd dd fd 0f 1f 44 00 00 e8 e2 cd dd fd [ 41.683669][ T94] RSP: 0018:ffff8881d5cd6d50 EFLAGS: 00010286 [ 41.689719][ T94] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 41.697675][ T94] RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103ab9ad9c [ 41.705627][ T94] RBP: ffff8881ce683850 R08: ffff8881d7314980 R09: ffffed103b64439f [ 41.713579][ T94] R10: ffffed103b64439e R11: ffff8881db221cf3 R12: 0000000000000003 [ 41.721531][ T94] R13: ffff8881d33f61e0 R14: ffff8881ce6770a0 R15: ffff8881d4e26b00 [ 41.729495][ T94] ? vprintk_func+0x7d/0x113 [ 41.734067][ T94] sisusb_send_bulk_msg.constprop.0+0x8b4/0x1070 [ 41.740375][ T94] ? sisusb_recv_bulk_msg.constprop.0+0x830/0x830 [ 41.746767][ T94] ? wake_up_klogd+0x41/0x50 [ 41.751422][ T94] ? vprintk_emit+0x18c/0x3d0 [ 41.756091][ T94] sisusb_send_bridge_packet.constprop.0+0x11c/0x240 [ 41.762798][ T94] ? sisusb_send_bulk_msg.constprop.0+0x1070/0x1070 [ 41.769367][ T94] sisusb_do_init_gfxdevice+0x8a/0x450 [ 41.774810][ T94] ? sisusb_read_memio_word+0x2f0/0x2f0 [ 41.780333][ T94] ? dev_printk_emit+0xba/0xf1 [ 41.785076][ T94] ? dev_vprintk_emit+0x541/0x541 [ 41.790088][ T94] ? really_probe+0x290/0xac0 [ 41.794753][ T94] sisusb_init_gfxdevice+0xe1/0x18d0 [ 41.800057][ T94] ? hub_event+0x21cb/0x4300 [ 41.804627][ T94] ? worker_thread+0x96/0xe20 [ 41.809334][ T94] ? kthread+0x318/0x420 [ 41.813565][ T94] ? __dev_printk+0x1db/0x203 [ 41.818219][ T94] ? sisusb_set_default_mode+0xa50/0xa50 [ 41.823827][ T94] ? _dev_info+0xd7/0x109 [ 41.828137][ T94] ? _dev_notice+0x109/0x109 [ 41.832708][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 41.837987][ T94] ? lockdep_init_map+0x1b0/0x5e0 [ 41.842987][ T94] ? kobject_get+0xbc/0x150 [ 41.847467][ T94] sisusb_probe+0x902/0xaf4 [ 41.851960][ T94] usb_probe_interface+0x310/0x800 [ 41.857055][ T94] ? usb_probe_device+0x230/0x230 [ 41.862059][ T94] really_probe+0x290/0xac0 [ 41.866585][ T94] driver_probe_device+0x223/0x350 [ 41.871677][ T94] __device_attach_driver+0x1d1/0x290 [ 41.877029][ T94] ? driver_allows_async_probing+0x160/0x160 [ 41.882998][ T94] bus_for_each_drv+0x162/0x1e0 [ 41.887842][ T94] ? bus_rescan_devices+0x20/0x20 [ 41.892847][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 41.898630][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 41.903905][ T94] __device_attach+0x217/0x390 [ 41.908658][ T94] ? device_bind_driver+0xd0/0xd0 [ 41.913662][ T94] bus_probe_device+0x1e4/0x290 [ 41.918498][ T94] device_add+0x1459/0x1bf0 [ 41.922979][ T94] ? wait_for_completion+0x3c0/0x3c0 [ 41.928258][ T94] ? device_link_remove+0x110/0x110 [ 41.933441][ T94] usb_set_configuration+0xe47/0x17d0 [ 41.938804][ T94] usb_generic_driver_probe+0x9d/0xe0 [ 41.944158][ T94] usb_probe_device+0xd9/0x230 [ 41.948897][ T94] ? usb_suspend+0x5f0/0x5f0 [ 41.953470][ T94] really_probe+0x290/0xac0 [ 41.957952][ T94] driver_probe_device+0x223/0x350 [ 41.963053][ T94] __device_attach_driver+0x1d1/0x290 [ 41.968424][ T94] ? driver_allows_async_probing+0x160/0x160 [ 41.974482][ T94] bus_for_each_drv+0x162/0x1e0 [ 41.979382][ T94] ? bus_rescan_devices+0x20/0x20 [ 41.984391][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 41.990191][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 41.995455][ T94] __device_attach+0x217/0x390 [ 42.000197][ T94] ? device_bind_driver+0xd0/0xd0 [ 42.005199][ T94] bus_probe_device+0x1e4/0x290 [ 42.010029][ T94] device_add+0x1459/0x1bf0 [ 42.014508][ T94] ? device_link_remove+0x110/0x110 [ 42.019686][ T94] usb_new_device.cold+0x540/0xcd0 [ 42.024776][ T94] hub_event+0x21cb/0x4300 [ 42.029173][ T94] ? hub_port_debounce+0x350/0x350 [ 42.034281][ T94] ? find_held_lock+0x2d/0x110 [ 42.039022][ T94] ? mark_held_locks+0xe0/0xe0 [ 42.043766][ T94] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 42.049304][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 42.054572][ T94] process_one_work+0x94b/0x1620 [ 42.059488][ T94] ? pwq_dec_nr_in_flight+0x310/0x310 [ 42.064872][ T94] ? do_raw_spin_lock+0x129/0x290 [ 42.069876][ T94] worker_thread+0x96/0xe20 [ 42.074358][ T94] ? process_one_work+0x1620/0x1620 [ 42.079533][ T94] kthread+0x318/0x420 [ 42.083598][ T94] ? kthread_create_on_node+0xf0/0xf0 [ 42.088955][ T94] ret_from_fork+0x24/0x30 [ 42.094071][ T94] Kernel Offset: disabled [ 42.098448][ T94] Rebooting in 86400 seconds..