Warning: Permanently added '10.128.0.15' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.758621][   T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   35.118268][   T12] usb 1-1: New USB device found, idVendor=0681, idProduct=0009, bcdDevice=ed.98
[   35.127340][   T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   35.136637][   T12] usb 1-1: config 0 descriptor??
[   35.180441][   T12] usb 1-1: gigaset_probe: Device matched ... !
[   35.188941][   T12] kasan: CONFIG_KASAN_INLINE enabled
[   35.194287][   T12] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   35.202389][   T12] general protection fault: 0000 [#1] SMP KASAN
[   35.208628][   T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.2.0-rc6+ #15
[   35.216051][   T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.226089][   T12] Workqueue: usb_hub_wq hub_event
[   35.231094][   T12] RIP: 0010:gigaset_probe.cold+0x25d/0xd31
[   35.236871][   T12] Code: e0 2a 80 3c 02 00 74 0a 48 8b 7c 24 08 e8 26 e6 1c fd 4d 8b 6f 18 ba ff ff 37 00 48 c1 e2 2a 49 8d 7d 04 48 89 f8 48 c1 e8 03 <0f> b6 0c 10 49 8d 45 05 48 89 c6 48 c1 ee 03 0f b6 14 16 48 89 fe
[   35.256447][   T12] RSP: 0018:ffff8881d9e0f2e0 EFLAGS: 00010247
[   35.262488][   T12] RAX: 0000000000000000 RBX: ffff8881c6820880 RCX: ffffffff81ddae1d
[   35.270450][   T12] RDX: dffffc0000000000 RSI: ffffffff83456ce6 RDI: 0000000000000004
[   35.278404][   T12] RBP: ffff8881c68200a0 R08: ffff8881d9df9800 R09: ffffed103b3c1e43
[   35.286365][   T12] R10: ffffed103b3c1e42 R11: 0000000000000003 R12: ffff8881d0f4df00
[   35.294322][   T12] R13: 0000000000000000 R14: ffff8881d41aa100 R15: ffff8881d244f488
[   35.302283][   T12] FS:  0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000
[   35.311185][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   35.317739][   T12] CR2: 00007f52a049b000 CR3: 00000001d342f000 CR4: 00000000001406f0
[   35.325682][   T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   35.333623][   T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   35.341580][   T12] Call Trace:
[   35.344845][   T12]  usb_probe_interface+0x305/0x7a0
[   35.349927][   T12]  ? usb_probe_device+0x100/0x100
[   35.354923][   T12]  really_probe+0x281/0x660
[   35.359395][   T12]  driver_probe_device+0x104/0x210
[   35.364476][   T12]  __device_attach_driver+0x1c2/0x220
[   35.369820][   T12]  ? driver_allows_async_probing+0x160/0x160
[   35.375771][   T12]  bus_for_each_drv+0x15c/0x1e0
[   35.380592][   T12]  ? bus_rescan_devices+0x20/0x20
[   35.385588][   T12]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   35.391387][   T12]  ? lockdep_hardirqs_on+0x379/0x580
[   35.396642][   T12]  __device_attach+0x217/0x360
[   35.401395][   T12]  ? device_bind_driver+0xd0/0xd0
[   35.406392][   T12]  ? kobject_uevent_env+0x29e/0x1150
[   35.411647][   T12]  ? kobject_uevent_env+0x2a8/0x1150
[   35.416899][   T12]  bus_probe_device+0x1e4/0x290
[   35.421720][   T12]  ? blocking_notifier_call_chain+0x54/0xa0
[   35.427585][   T12]  device_add+0xae6/0x16f0
[   35.431982][   T12]  ? uevent_store+0x50/0x50
[   35.436478][   T12]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   35.442262][   T12]  usb_set_configuration+0xdf6/0x1670
[   35.447620][   T12]  generic_probe+0x9d/0xd5
[   35.452019][   T12]  usb_probe_device+0x99/0x100
[   35.456755][   T12]  ? usb_suspend+0x620/0x620
[   35.461333][   T12]  really_probe+0x281/0x660
[   35.465809][   T12]  driver_probe_device+0x104/0x210
[   35.470893][   T12]  __device_attach_driver+0x1c2/0x220
[   35.476238][   T12]  ? driver_allows_async_probing+0x160/0x160
[   35.482189][   T12]  bus_for_each_drv+0x15c/0x1e0
[   35.487010][   T12]  ? bus_rescan_devices+0x20/0x20
[   35.492007][   T12]  ? _raw_spin_unlock_irqrestore+0x3e/0x50
[   35.497789][   T12]  ? lockdep_hardirqs_on+0x379/0x580
[   35.503054][   T12]  __device_attach+0x217/0x360
[   35.507793][   T12]  ? device_bind_driver+0xd0/0xd0
[   35.512794][   T12]  ? kobject_uevent_env+0x29e/0x1150
[   35.518053][   T12]  ? kobject_uevent_env+0x2a8/0x1150
[   35.523311][   T12]  bus_probe_device+0x1e4/0x290
[   35.528144][   T12]  ? blocking_notifier_call_chain+0x54/0xa0
[   35.534017][   T12]  device_add+0xae6/0x16f0
[   35.538407][   T12]  ? uevent_store+0x50/0x50
[   35.542897][   T12]  usb_new_device.cold+0x6a4/0xe61
[   35.548064][   T12]  hub_event+0x1abd/0x3550
[   35.552455][   T12]  ? hub_port_debounce+0x260/0x260
[   35.557541][   T12]  process_one_work+0x905/0x1570
[   35.562453][   T12]  ? pwq_dec_nr_in_flight+0x310/0x310
[   35.567797][   T12]  ? do_raw_spin_lock+0x11a/0x280
[   35.572792][   T12]  worker_thread+0x96/0xe20
[   35.577266][   T12]  ? process_one_work+0x1570/0x1570