[  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

syzkaller login: [   33.318352][ T8441] bash (8441) used greatest stack depth: 11280 bytes left
Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts.
executing program
[   48.422042][   T55] usb 1-1: new low-speed USB device number 2 using dummy_hcd
[   48.801991][   T55] usb 1-1: unable to get BOS descriptor or descriptor too short
[   48.872004][   T55] usb 1-1: unable to read config index 0 descriptor/start: -71
[   48.879559][   T55] usb 1-1: can't read configurations, error -71
executing program
[   54.131319][   T55] usb 1-1: new low-speed USB device number 4 using dummy_hcd
[   54.531289][   T55] usb 1-1: unable to get BOS descriptor or descriptor too short
[   54.591365][   T55] usb 1-1: unable to read config index 0 descriptor/start: -71
[   54.598921][   T55] usb 1-1: can't read configurations, error -71
[   55.464522][ T8474] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88810cac1d60 (size 32):
  comm "softirq", pid 0, jiffies 4294942118 (age 13.150s)
  hex dump (first 32 bytes):
    02 00 00 00 08 00 00 00 80 06 00 01 00 00 40 00  ..............@.
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000000fdae85c>] gadget_setup+0xf6/0x220
    [<000000001ba7a9d6>] dummy_timer+0xb9f/0x14c0
    [<000000002f4d47df>] call_timer_fn+0x38/0x200
    [<00000000f3616bf6>] __run_timers.part.0+0x319/0x400
    [<000000009b3791ae>] run_timer_softirq+0x3d/0x80
    [<000000008de8f3d5>] __do_softirq+0xcc/0x2c2
    [<00000000de435420>] asm_call_irq_on_stack+0xf/0x20
    [<0000000029286a3b>] do_softirq_own_stack+0x32/0x40
    [<000000004a70c24a>] irq_exit_rcu+0x91/0xc0
    [<00000000f46b3bc6>] sysvec_apic_timer_interrupt+0x36/0x80
    [<0000000055f485d0>] asm_sysvec_apic_timer_interrupt+0x12/0x20
    [<00000000b502c238>] acpi_idle_do_entry+0xc3/0xd0
    [<00000000381ae45e>] acpi_idle_enter+0x128/0x1f0
    [<00000000c9e55194>] cpuidle_enter_state+0xc9/0x650
    [<00000000c35c1b32>] cpuidle_enter+0x29/0x40
    [<00000000b620e449>] do_idle+0x1c8/0x250