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 '10.128.10.36' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.466176][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 28.706145][ T83] usb 1-1: Using ep0 maxpacket: 16 [ 28.826207][ T83] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 28.837347][ T83] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9 [ 28.850152][ T83] usb 1-1: New USB device found, idVendor=045e, idProduct=07da, bcdDevice= 0.00 [ 28.859202][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.868443][ T83] usb 1-1: config 0 descriptor?? [ 29.348357][ T83] microsoft 0003:045E:07DA.0001: unknown main item tag 0x0 [ 29.355670][ T83] microsoft 0003:045E:07DA.0001: unknown main item tag 0x0 [ 29.366544][ T83] input: HID 045e:07da as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/0003:045E:07DA.0001/input/input5 [ 29.448921][ T83] microsoft 0003:045E:07DA.0001: input,hidraw0: USB HID v0.00 Device [HID 045e:07da] on usb-dummy_hcd.0-1/input0 [ 29.557217][ C1] ================================================================== [ 29.565395][ C1] BUG: KASAN: slab-out-of-bounds in hidinput_hid_event+0x1111/0x15d3 [ 29.573436][ C1] Read of size 8 at addr ffff8881cf4d2cd0 by task swapper/1/0 [ 29.580862][ C1] [ 29.583173][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc2-syzkaller #0 [ 29.591036][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.601088][ C1] Call Trace: [ 29.604350][ C1] [ 29.607180][ C1] dump_stack+0xef/0x16e [ 29.611399][ C1] ? hidinput_hid_event+0x1111/0x15d3 [ 29.616745][ C1] ? hidinput_hid_event+0x1111/0x15d3 [ 29.624178][ C1] print_address_description.constprop.0+0x16/0x200 [ 29.630738][ C1] ? hidinput_hid_event+0x1111/0x15d3 [ 29.636171][ C1] ? hidinput_hid_event+0x1111/0x15d3 [ 29.641632][ C1] __kasan_report.cold+0x37/0x7f [ 29.646561][ C1] ? hidinput_hid_event+0x1111/0x15d3 [ 29.651907][ C1] kasan_report+0xe/0x20 [ 29.656126][ C1] check_memory_region+0x152/0x1c0 [ 29.661214][ C1] hidinput_hid_event+0x1111/0x15d3 [ 29.666387][ C1] hid_process_event+0x4a0/0x580 [ 29.671312][ C1] ? hid_field_extract+0xe4/0x170 [ 29.676311][ C1] ? mf_play.cold+0x99/0x99 [ 29.680807][ C1] ? kmalloc_order_trace+0xe4/0x110 [ 29.685980][ C1] hid_report_raw_event+0xabb/0xed0 [ 29.691161][ C1] hid_input_report+0x315/0x3f0 [ 29.696035][ C1] ? ktime_get_mono_fast_ns+0x163/0x1f0 [ 29.701616][ C1] hid_irq_in+0x50e/0x690 [ 29.705924][ C1]