hid-generic 0000:0000:0000.2B0F: unknown main item tag 0x0
hid-generic 0000:0000:0000.2B0F: unknown main item tag 0x0
hid-generic 0000:0000:0000.2B0F: unknown main item tag 0x0
hid-generic 0000:0000:0000.2B0F: unknown main item tag 0x0
hid-generic 0000:0000:0000.2B0F: hidraw0: <UNKNOWN> HID v0.00 Device [syz0] on syz0
INFO: task init:2446 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #23
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
init            D28824  2446      1 0x00000000
 ffff8801d64d4740 0000000000000000 ffff8801d74b0000 ffffffff83029180
 ffff8801db621018 ffff8801c4587738 ffffffff828075c2 0000000000000000
 ffff8801d64d4ff0 ffffed003ac9a9fd 00ff8801d64d4740 ffff8801db6218f0
Call Trace:
 [<ffffffff82808aef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828094a3>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff8280b51d>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff8280b51d>] mutex_lock_nested+0x38d/0x900 kernel/locking/mutex.c:621
 [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
 [<ffffffff81517bdd>] chrdev_open+0x22d/0x5c0 fs/char_dev.c:392
 [<ffffffff81501e3f>] do_dentry_open+0x3ef/0xc90 fs/open.c:766
 [<ffffffff8150576c>] vfs_open+0x11c/0x210 fs/open.c:879
 [<ffffffff8153c542>] do_last fs/namei.c:3410 [inline]
 [<ffffffff8153c542>] path_openat+0x542/0x2790 fs/namei.c:3534
 [<ffffffff81541617>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff8150617d>] do_sys_open+0x30d/0x5c0 fs/open.c:1072
 [<ffffffff8150645d>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff8150645d>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe63f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/1908:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8156cc7c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/2035:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by init/2446:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/2447:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/2448:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/2449:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130
1 lock held by init/3462:
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open_by_driver drivers/tty/tty_io.c:2052 [inline]
 #0:  (tty_mutex){+.+.+.}, at: [<ffffffff81d2bb96>] tty_open+0x476/0xdf0 drivers/tty/tty_io.c:2130

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #23
 ffff8801d9907d08 ffffffff81b42e79 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810983b0 ffff8801d9907d40
 ffffffff81b4df89 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81b42e79>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42e79>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4df89>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4df1c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff810984b4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c65d>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c65d>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c65d>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c65d>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff81142c3d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82817a5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 590 Comm: udevd Not tainted 4.9.141+ #23
task: ffff8801cfdf2f80 task.stack: ffff8801cfe78000
RIP: 0010:[<ffffffff81167431>] 
c [<ffffffff81167431>] __preempt_count_sub arch/x86/include/asm/preempt.h:74 [inline]
RIP: 0010:[<ffffffff81167431>] 
c [<ffffffff81167431>] preempt_count_sub+0x61/0x170 kernel/sched/core.c:3281
RSP: 0000:ffff8801cfe7fb48  EFLAGS: 00000202
RAX: 0000000080000001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000004 RSI: 0000000000000001 RDI: ffffffff841eb840
RBP: ffff8801cfe7fb50 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801cff5d960
R13: 80000001cf59d067 R14: 0000000000000008 R15: ffffea00073d6740
FS:  00007fdf091ac7a0(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001de4a88 CR3: 00000001cfe4a000 CR4: 00000000001606b0
Stack:
 ffff8801cfde9a50
c ffff8801cfe7fb68
c ffffffff82816efc
c ffff8801cfe7fdd0
c
 ffff8801cfe7fce0
c ffffffff81497a1f
c 0000000000000000
c ffff8801cfe7fba8
c
 0000000000000246
c ffff8801cfdf2f80
c ffff8801cfe7fdd8
c 80000001cf59d065
c
Call Trace:
 [<ffffffff82816efc>] __raw_spin_unlock include/linux/spinlock_api_smp.h:154 [inline]
 [<ffffffff82816efc>] _raw_spin_unlock+0x2c/0x50 kernel/locking/spinlock.c:183
 [<ffffffff81497a1f>] spin_unlock include/linux/spinlock.h:347 [inline]
 [<ffffffff81497a1f>] wp_page_reuse mm/memory.c:2103 [inline]
 [<ffffffff81497a1f>] do_wp_page+0xd7f/0x2010 mm/memory.c:2425
 [<ffffffff814a333b>] handle_pte_fault mm/memory.c:3531 [inline]
 [<ffffffff814a333b>] __handle_mm_fault mm/memory.c:3603 [inline]
 [<ffffffff814a333b>] handle_mm_fault+0xfcb/0x2350 mm/memory.c:3640
 [<ffffffff810b2b33>] __do_page_fault+0x403/0xa60 arch/x86/mm/fault.c:1406
 [<ffffffff810b31e7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff828188b5>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:951
Code: 
c00 
c00 
c8b 
c0d 
c32 
c44 
c08 
c03 
c85 
cc9 
c75 
c18 
c65 
c8b 
c05 
c77 
c09 
ceb 
c7e 
c25 
cff 
cff 
cff 
c7f 
c39 
cc3 
c7f 
c1b 
c81 
cfb 
cfe 
c00 
c00 
c00 
c76 
c78 
c65 
c8b 
c05 
c5f 
c09 
ceb 
c7e 
c<f7> 
cdb 
c65 
c01 
c1d 
c56 
c09 
ceb 
c7e 
c5b 
c5d 
cc3 
ce8 
cee 
c07 
ca1 
c00 
c85 
cc0 
c74 
cf4 
c