[ 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 '10.128.0.84' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.475866][ T3674] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 49.835826][ T3674] usb 1-1: too many endpoints for config 0 interface 0 altsetting 0: 253, using maximum allowed: 30 [ 49.846769][ T3674] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 49.857732][ T3674] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 49.867559][ T3674] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 253 [ 49.880596][ T3674] usb 1-1: New USB device found, idVendor=056a, idProduct=0093, bcdDevice= 0.40 [ 49.889655][ T3674] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 49.898284][ T3674] usb 1-1: config 0 descriptor?? [ 50.366285][ T3674] wacom 0003:056A:0093.0001: item fetching failed at offset 0/1 [ 50.373993][ T3674] wacom 0003:056A:0093.0001: parse failed [ 50.379762][ T3674] wacom: probe of 0003:056A:0093.0001 failed with error -22 [ 50.566510][ T4912] usb 1-1: USB disconnect, device number 2 executing program [ 56.044826][ T4912] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 56.404865][ T4912] usb 1-1: too many endpoints for config 0 interface 0 altsetting 0: 253, using maximum allowed: 30 [ 56.415806][ T4912] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 56.427096][ T4912] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 56.437050][ T4912] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 253 [ 56.450223][ T4912] usb 1-1: New USB device found, idVendor=056a, idProduct=0093, bcdDevice= 0.40 [ 56.459540][ T4912] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 56.468260][ T4912] usb 1-1: config 0 descriptor?? [ 56.945392][ T4912] wacom 0003:056A:0093.0002: item fetching failed at offset 0/1 [ 56.953310][ T4912] wacom 0003:056A:0093.0002: parse failed [ 56.962713][ T4912] wacom: probe of 0003:056A:0093.0002 failed with error -22 [ 57.145340][ T4912] usb 1-1: USB disconnect, device number 3 executing program [ 62.634185][ T3674] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 62.994248][ T3674] usb 1-1: too many endpoints for config 0 interface 0 altsetting 0: 253, using maximum allowed: 30 [ 63.005044][ T3674] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 63.016373][ T3674] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 63.026384][ T3674] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 253 [ 63.039608][ T3674] usb 1-1: New USB device found, idVendor=056a, idProduct=0093, bcdDevice= 0.40 [ 63.049013][ T3674] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 63.057753][ T3674] usb 1-1: config 0 descriptor?? [ 63.525882][ T3674] wacom 0003:056A:0093.0003: item fetching failed at offset 0/1 [ 63.533613][ T3674] wacom 0003:056A:0093.0003: parse failed [ 63.539691][ T3674] wacom: probe of 0003:056A:0093.0003 failed with error -22 [ 63.724718][ T3674] usb 1-1: USB disconnect, device number 4 executing program [ 69.213755][ T3674] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 69.573829][ T3674] usb 1-1: too many endpoints for config 0 interface 0 altsetting 0: 253, using maximum allowed: 30 [ 69.584862][ T3674] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 69.595817][ T3674] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 69.605631][ T3674] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 253 [ 69.618662][ T3674] usb 1-1: New USB device found, idVendor=056a, idProduct=0093, bcdDevice= 0.40 [ 69.627750][ T3674] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 69.636427][ T3674] usb 1-1: config 0 descriptor?? [ 70.135413][ T3674] wacom 0003:056A:0093.0004: item fetching failed at offset 0/1 [ 70.144521][ T3674] wacom 0003:056A:0093.0004: parse failed [ 70.150292][ T3674] wacom: probe of 0003:056A:0093.0004 failed with error -22 [ 70.334317][ T3674] usb 1-1: USB disconnect, device number 5 [ 71.381770][ T8490] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810dc44a00 (size 512): comm "kworker/1:2", pid 3674, jiffies 4294943617 (age 14.100s) 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: [<0000000023e1afac>] __kfifo_alloc+0xad/0x100 [<00000000c477f737>] wacom_probe+0x1a1/0x3b0 [<00000000b3109aca>] hid_device_probe+0x16b/0x210 [<00000000aff7c640>] really_probe+0x159/0x480 [<00000000778d0bc3>] driver_probe_device+0x84/0x100 [<000000005108dbb5>] __device_attach_driver+0xee/0x110 [<00000000efb7c59e>] bus_for_each_drv+0xb7/0x100 [<0000000024ab1590>] __device_attach+0x122/0x250 [<000000004c7ac048>] bus_probe_device+0xc6/0xe0 [<00000000b93050a3>] device_add+0x5ac/0xc30 [<00000000e5b46ea5>] hid_add_device+0x151/0x390 [<00000000c6add147>] usbhid_probe+0x412/0x560 [<00000000c33acdb4>] usb_probe_interface+0x177/0x370 [<00000000aff7c640>] really_probe+0x159/0x480 [<00000000778d0bc3>] driver_probe_device+0x84/0x100 [<000000005108dbb5>] __device_attach_driver+0xee/0x110