[ 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: [ 34.001285][ T8355] sshd (8355) used greatest stack depth: 11176 bytes left Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. executing program [ 49.097433][ T3702] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 49.287329][ T3702] usb 1-1: device descriptor read/64, error 18 [ 49.557307][ T3702] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 49.747266][ T3702] usb 1-1: device descriptor read/64, error 18 [ 49.867316][ T3702] usb usb1-port1: attempt power cycle [ 50.577169][ T3702] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 50.757177][ T3702] usb 1-1: device descriptor read/8, error -61 [ 51.027107][ T3702] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 51.207160][ T3702] usb 1-1: device descriptor read/8, error -61 [ 51.327145][ T3702] usb usb1-port1: unable to enumerate USB device [ 59.727597][ T8492] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810aee4aa0 (size 32): comm "softirq", pid 0, jiffies 4294942387 (age 10.680s) hex dump (first 32 bytes): 02 00 00 00 08 00 00 00 80 06 00 01 00 00 08 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000001a86e3d9>] gadget_setup+0xf6/0x220 [<0000000086641220>] dummy_timer+0xb9f/0x14c0 [<0000000054c2fdd2>] call_timer_fn+0x38/0x200 [<0000000045fe0300>] __run_timers.part.0+0x319/0x400 [<000000003697d11f>] run_timer_softirq+0x3d/0x80 [<0000000066d03050>] __do_softirq+0xcc/0x2c2 [<00000000d57eb389>] asm_call_irq_on_stack+0xf/0x20 [<00000000321031d0>] do_softirq_own_stack+0x32/0x40 [<0000000054e7e97b>] irq_exit_rcu+0x91/0xc0 [<000000001a9d673a>] sysvec_apic_timer_interrupt+0x36/0x80 [<00000000bfa9c374>] asm_sysvec_apic_timer_interrupt+0x12/0x20 [<0000000007354c4a>] acpi_idle_do_entry+0xc3/0xd0 [<00000000cfdb981b>] acpi_idle_enter+0x128/0x1f0 [<00000000ebd9fef9>] cpuidle_enter_state+0xc9/0x650 [<0000000037d02bfe>] cpuidle_enter+0x29/0x40 [<0000000011c89856>] do_idle+0x1c8/0x250