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 '10.128.0.115' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.851643][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 28.091601][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 28.211698][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 28.222727][ T12] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9 [ 28.235541][ T12] usb 1-1: New USB device found, idVendor=045e, idProduct=07da, bcdDevice= 0.00 [ 28.244592][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.253922][ T12] usb 1-1: config 0 descriptor?? [ 28.733325][ T12] microsoft 0003:045E:07DA.0001: unknown main item tag 0x0 [ 28.741015][ T12] microsoft 0003:045E:07DA.0001: unknown main item tag 0x0 [ 28.753125][ T12] input: HID 045e:07da as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/0003:045E:07DA.0001/input/input5 [ 28.834433][ T12] microsoft 0003:045E:07DA.0001: input,hidraw0: USB HID v0.00 Device [HID 045e:07da] on usb-dummy_hcd.0-1/input0 [ 28.961751][ C0] microsoft 0003:045E:07DA.0001: hid_field_extract() called with n (167) > 32! (swapper/0) [ 28.972166][ C0] ================================================================== [ 28.980274][ C0] BUG: KASAN: slab-out-of-bounds in hid_field_extract+0x150/0x170 [ 28.988075][ C0] Read of size 1 at addr ffff8881d0389010 by task swapper/0/0 [ 28.995513][ C0] [ 28.997831][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc2-syzkaller #0 [ 29.005715][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.015748][ C0] Call Trace: [ 29.019009][ C0] [ 29.021841][ C0] dump_stack+0xef/0x16e [ 29.026076][ C0] ? hid_field_extract+0x150/0x170 [ 29.031169][ C0] ? hid_field_extract+0x150/0x170 [ 29.036259][ C0] print_address_description.constprop.0+0x16/0x200 [ 29.042824][ C0] ? hid_field_extract+0x150/0x170 [ 29.048169][ C0] ? hid_field_extract+0x150/0x170 [ 29.053252][ C0] __kasan_report.cold+0x37/0x7f [ 29.058165][ C0] ? hid_field_extract+0x150/0x170 [ 29.063259][ C0] kasan_report+0xe/0x20 [ 29.067485][ C0] hid_field_extract+0x150/0x170 [ 29.072407][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 29.078271][ C0] hid_report_raw_event+0x5de/0xed0 [ 29.083443][ C0] hid_input_report+0x315/0x3f0 [ 29.088272][ C0] ? ktime_get_mono_fast_ns+0x163/0x1f0 [ 29.094227][ C0] hid_irq_in+0x50e/0x690 [ 29.098543][ C0] __usb_hcd_giveback_urb+0x29a/0x550 [ 29.103888][ C0] usb_hcd_giveback_urb+0x368/0x420 [ 29.109062][ C0] dummy_timer+0x12