------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888029781c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x150 include/linux/skbuff.h:2927
WARNING: CPU: 1 PID: 5914 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 5914 Comm: kworker/1:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 41 56 48 8b 14 dd 20 85 f0 8b 4c 89 e6 48 c7 c7 a0 79 f0 8b e8 ef b4 d0 fc 90 <0f> 0b 90 90 58 83 05 d6 e6 d7 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc90000a08a18 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff817b2ee8
RDX: ffff88801ebd0000 RSI: ffffffff817b2ef5 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8bf08040
R13: ffffffff8b901fe0 R14: ffffffff8a4b88a0 R15: ffffc90000a08b18
FS:  0000000000000000(0000) GS:ffff888124b09000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fada6bb12f8 CR3: 000000000e182000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x4b7/0x600 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2470 [inline]
 slab_free mm/slub.c:6630 [inline]
 kfree+0x291/0x6d0 mm/slub.c:6837
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x53f/0x630 net/rose/rose_timer.c:183
 call_timer_fn+0x19a/0x620 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers+0x6ef/0x960 kernel/time/timer.c:2372
 __run_timer_base kernel/time/timer.c:2384 [inline]
 __run_timer_base kernel/time/timer.c:2376 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2393
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
 handle_softirqs+0x219/0x8e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872
Code: 94 08 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 12 53 e9 0e 0f 82 74 02 00 00 8b 35 6a 83 e9 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 29 94 08 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc900044876c8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3c4460 RCX: 00000000be11702e
RDX: 0000000000000000 RSI: ffffffff8da034e4 RDI: ffffffff8bf07440
RBP: 0000000000000002 R08: 0145b15ecd694db9 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
 kernfs_root+0x34/0x2a0 fs/kernfs/kernfs-internal.h:75
 kernfs_find_ns+0x366/0x540 fs/kernfs/dir.c:860
 kernfs_remove_by_name_ns+0x4b/0x110 fs/kernfs/dir.c:1714
 kernfs_remove_by_name include/linux/kernfs.h:633 [inline]
 sysfs_unmerge_group+0xe7/0x170 fs/sysfs/group.c:402
 rpm_sysfs_remove drivers/base/power/sysfs.c:823 [inline]
 dpm_sysfs_remove+0x7f/0xb0 drivers/base/power/sysfs.c:832
 device_del+0x1a0/0x9f0 drivers/base/core.c:3853
 device_unregister+0x1d/0xc0 drivers/base/core.c:3919
 usb_remove_ep_devs+0x42/0x80 drivers/usb/core/endpoint.c:189
 remove_intf_ep_devs drivers/usb/core/message.c:1266 [inline]
 usb_disable_device+0x309/0x7d0 drivers/usb/core/message.c:1417
 usb_disconnect+0x2e1/0x9c0 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1c81/0x4fe0 drivers/usb/core/hub.c:5952
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	94                   	xchg   %eax,%esp
   1:	08 12                	or     %dl,(%rdx)
   3:	83 f8 07             	cmp    $0x7,%eax
   6:	0f 87 bc 02 00 00    	ja     0x2c8
   c:	89 c0                	mov    %eax,%eax
   e:	48 0f a3 05 12 53 e9 	bt     %rax,0xee95312(%rip)        # 0xee95328
  15:	0e
  16:	0f 82 74 02 00 00    	jb     0x290
  1c:	8b 35 6a 83 e9 0e    	mov    0xee9836a(%rip),%esi        # 0xee9838c
  22:	85 f6                	test   %esi,%esi
  24:	0f 85 8d 00 00 00    	jne    0xb7
* 2a:	48 8b 44 24 30       	mov    0x30(%rsp),%rax <-- trapping instruction
  2f:	65 48 2b 05 29 94 08 	sub    %gs:0x12089429(%rip),%rax        # 0x12089460
  36:	12
  37:	0f 85 c7 02 00 00    	jne    0x304
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4