[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[   17.026311][    C1] random: crng init done
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.107' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   28.581487][   T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   28.791551][   T12] usb 1-1: config 0 has an invalid interface number: 15 but max is 0
[   28.799905][   T12] usb 1-1: config 0 has no interface number 0
[   28.806252][   T12] usb 1-1: config 0 interface 15 altsetting 0 endpoint 0x8D has invalid wMaxPacketSize 0
[   28.816586][   T12] usb 1-1: config 0 interface 15 altsetting 0 bulk endpoint 0x8D has invalid maxpacket 0
[   28.826564][   T12] usb 1-1: New USB device found, idVendor=1286, idProduct=204a, bcdDevice=f2.a9
[   28.835867][   T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   28.845374][   T12] usb 1-1: config 0 descriptor??
[   28.887484][  T102] usb 1-1: Direct firmware load for mrvl/usb8801_uapsta.bin failed with error -2
[   28.897046][  T102] usb 1-1: Failed to get firmware mrvl/usb8801_uapsta.bin
[   28.904429][  T102] usb 1-1: info: _mwifiex_fw_dpc: unregister device
[   28.911351][  T102] INFO: trying to register non-static key.
[   28.917515][  T102] the code is fine but needs lockdep annotation.
[   28.923966][  T102] turning off the locking correctness validator.
[   28.930311][  T102] CPU: 0 PID: 102 Comm: kworker/0:2 Not tainted 5.5.0-rc6-syzkaller #0
[   28.938648][  T102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.948834][  T102] Workqueue: events request_firmware_work_func
[   28.955026][  T102] Call Trace:
[   28.958304][  T102]  dump_stack+0xef/0x16e
[   28.962639][  T102]  register_lock_class+0x1022/0x11d0
[   28.967919][  T102]  ? ret_from_fork+0x24/0x30
[   28.972527][  T102]  ? is_dynamic_key+0x1b0/0x1b0
[   28.977375][  T102]  ? stack_trace_save+0x9f/0xe0
[   28.982220][  T102]  __lock_acquire+0xfc/0x3b60
[   28.986979][  T102]  ? save_stack+0x4c/0x80
[   28.991296][  T102]  ? ret_from_fork+0x24/0x30
[   28.995864][  T102]  ? mark_held_locks+0xe0/0xe0
[   29.000603][  T102]  ? _cond_resched+0x10/0x20
[   29.005189][  T102]  ? usb_kill_urb+0x198/0x2c0
[   29.009859][  T102]  lock_acquire+0x130/0x340
[   29.014364][  T102]  ? try_to_del_timer_sync+0x110/0x110
[   29.019796][  T102]  del_timer_sync+0x3a/0x130
[   29.024373][  T102]  ? try_to_del_timer_sync+0x110/0x110
[   29.029825][  T102]  mwifiex_unregister_dev+0x416/0x690
[   29.035289][  T102]  _mwifiex_fw_dpc+0x732/0xe00
[   29.040078][  T102]  ? mwifiex_usb_prepare_tx_aggr_skb+0x8c0/0x8c0
[   29.046410][  T102]  ? mwifiex_drv_info_dump+0xf70/0xf70
[   29.051869][  T102]  ? _request_firmware+0x935/0x1210
[   29.057044][  T102]  ? kfree+0xd5/0x300
[   29.061139][  T102]  ? _request_firmware+0x10b/0x1210
[   29.066325][  T102]  ? assign_fw+0x480/0x480
[   29.070733][  T102]  ? find_held_lock+0x2d/0x110
[   29.075493][  T102]  ? mark_held_locks+0xe0/0xe0
[   29.080256][  T102]  ? _mwifiex_fw_dpc+0xe00/0xe00
[   29.085285][  T102]  request_firmware_work_func+0x126/0x242
[   29.091001][  T102]  ? request_firmware_into_buf+0x90/0x90
[   29.096777][  T102]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   29.102362][  T102]  ? rcu_read_lock_bh_held+0xb0/0xb0
[   29.107681][  T102]  process_one_work+0x945/0x15c0
[   29.112614][  T102]  ? pwq_dec_nr_in_flight+0x310/0x310
[   29.117986][  T102]  ? do_raw_spin_lock+0x129/0x290
[   29.123002][  T102]  worker_thread+0x96/0xe20
[   29.127500][  T102]  ? process_one_work+0x15c0/0x15c0
[   29.132695][  T102]  kthread+0x318/0x420
[   29.136857][  T102