hid-generic 0000:0000:0000.007E: unknown main item tag 0x0
hid-generic 0000:0000:0000.007E: unknown main item tag 0x0
hid-generic 0000:0000:0000.007E: unknown main item tag 0x0
hid-generic 0000:0000:0000.007E: unknown main item tag 0x0
hid-generic 0000:0000:0000.007E: hidraw0: <UNKNOWN> HID v0.00 Device [syz1] on syz1
WARNING: CPU: 1 PID: 8650 at lib/debugobjects.c:263 debug_print_object+0x181/0x210 lib/debugobjects.c:260()
ODEBUG: free active (active state 0) object type: work_struct hint: xfrm_state_gc_task+0x0/0x500 include/linux/compiler.h:247
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8650 Comm: kworker/u4:11 Not tainted 4.4.151-g727cfac #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
 0000000000000000 7b05cfd46969ab5a ffff8800a41ef788 ffffffff81e15eed
 ffffffff83a44e40 ffff8800b638e000 ffffffff83c159c0 0000000000000009
 0000000000000107 ffff8800a41ef848 ffffffff8140d4e4 0000000041b58ab3
Call Trace:
 [<ffffffff81e15eed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e15eed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff8140d4e4>] panic+0x19e/0x38d kernel/panic.c:112
 [<ffffffff8140d708>] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455
 [<ffffffff8113302f>] warn_slowpath_fmt+0xbf/0x100 kernel/panic.c:471
 [<ffffffff81e764f1>] debug_print_object+0x181/0x210 lib/debugobjects.c:260
 [<ffffffff81e78e0b>] __debug_check_no_obj_freed lib/debugobjects.c:697 [inline]
 [<ffffffff81e78e0b>] debug_check_no_obj_freed+0x4fb/0x940 lib/debugobjects.c:726
 [<ffffffff814fb2d8>] slab_free_hook mm/slub.c:1376 [inline]
 [<ffffffff814fb2d8>] slab_free_freelist_hook mm/slub.c:1405 [inline]
 [<ffffffff814fb2d8>] slab_free mm/slub.c:2859 [inline]
 [<ffffffff814fb2d8>] kmem_cache_free+0x188/0x340 mm/slub.c:2881
 [<ffffffff82f68bc7>] net_free net/core/net_namespace.c:362 [inline]
 [<ffffffff82f68bc7>] net_drop_ns+0x67/0x80 net/core/net_namespace.c:369
 [<ffffffff82f690ac>] cleanup_net+0x4cc/0x600 net/core/net_namespace.c:469
 [<ffffffff8118501f>] process_one_work+0x7df/0x1600 kernel/workqueue.c:2064
 [<ffffffff81185f19>] worker_thread+0xd9/0xfc0 kernel/workqueue.c:2196
 [<ffffffff81193a28>] kthread+0x268/0x300 kernel/kthread.c:211
 [<ffffffff838cc655>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Shutting down cpus with NMI
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..