[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 61.326919][ T3723] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 61.686942][ T3723] usb 1-1: config 0 interface 0 altsetting 252 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 61.698000][ T3723] usb 1-1: config 0 interface 0 altsetting 252 has 1 endpoint descriptor, different from the interface descriptor's value: 9 [ 61.710968][ T3723] usb 1-1: config 0 interface 0 has no altsetting 0 [ 61.717594][ T3723] usb 1-1: New USB device found, idVendor=056a, idProduct=0057, bcdDevice= 0.00 [ 61.726608][ T3723] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 61.735241][ T3723] usb 1-1: config 0 descriptor?? [ 62.217209][ T3723] hid (null): unknown global tag 0xc [ 62.222502][ T3723] hid (null): unknown global tag 0xd [ 62.229215][ T3723] wacom 0003:056A:0057.0001: unknown main item tag 0x0 [ 62.236085][ T3723] wacom 0003:056A:0057.0001: item 0 4 0 11 parsing failed [ 62.248050][ T3723] wacom 0003:056A:0057.0001: parse failed [ 62.253787][ T3723] wacom: probe of 0003:056A:0057.0001 failed with error -22 [ 62.417501][ T3259] usb 1-1: USB disconnect, device number 2 [ 68.230579][ T8470] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810821fa00 (size 512): comm "kworker/0:2", pid 3723, jiffies 4294943495 (age 8.040s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000068403789>] __kfifo_alloc+0xad/0x100 [<000000009ca642a8>] wacom_probe+0x1a1/0x3b0 [<000000008ef3a7c0>] hid_device_probe+0x16b/0x210 [<00000000fc9628d9>] really_probe+0x159/0x480 [<00000000ff2c75e6>] driver_probe_device+0x84/0x100 [<00000000afdd96c5>] __device_attach_driver+0xee/0x110 [<000000008761abf3>] bus_for_each_drv+0xb7/0x100 [<00000000f5c833ed>] __device_attach+0x122/0x250 [<00000000b5c7f162>] bus_probe_device+0xc6/0xe0 [<00000000d0b0a1c6>] device_add+0x5ac/0xc30 [<00000000d66f3c7e>] hid_add_device+0x151/0x390 [<00000000f559542c>] usbhid_probe+0x412/0x560 [<000000006b3d2016>] usb_probe_interface+0x177/0x370 [<00000000fc9628d9>] really_probe+0x159/0x480 [<00000000ff2c75e6>] driver_probe_device+0x84/0x100 [<00000000afdd96c5>] __device_attach_driver+0xee/0x110