------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88805476b490 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 5831 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 5831 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 77 e4 92 fd 4d 8b 0f 48 c7 c7 80 0f bf 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 4a 4b f0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 57 32 ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a00 EFLAGS: 00010296
RAX: fc042933d1396400 RBX: dffffc0000000000 RCX: ffff88802a5a8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba650 R12: ffffffff8a3925a0
R13: ffffffff8bbf1100 R14: ffff88805476b490 R15: ffffffff8b6cf600
FS:  0000555594af3500(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1265b12f8 CR3: 00000000670e4000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x3a2/0x470 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2470 [inline]
 slab_free mm/slub.c:6630 [inline]
 kfree+0x115/0x6d0 mm/slub.c:6837
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4cb/0x600 net/rose/rose_timer.c:183
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 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+0xa6/0xc0 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 5b dc 7e f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 53 0a 47 f6 65 8b 05 dc 48 25 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000413fc00 EFLAGS: 00000206
RAX: fc042933d1396400 RBX: 0000000000000a02 RCX: fc042933d1396400
RDX: 0000000000000000 RSI: ffffffff8d70da3a RDI: 0000000000000001
RBP: ffffc9000413fc88 R08: ffffffff8f7cd777 R09: 1ffffffff1ef9aee
R10: dffffc0000000000 R11: fffffbfff1ef9aef R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff999c4ee8 R15: 1ffff92000827f80
 debug_timer_init kernel/time/timer.c:788 [inline]
 debug_init kernel/time/timer.c:836 [inline]
 timer_init_key+0x41/0x2d0 kernel/time/timer.c:880
 inet_csk_init_xmit_timers+0x47/0xf0 net/ipv4/inet_connection_sock.c:740
 tcp_init_xmit_timers+0x2a/0x70 net/ipv4/tcp_timer.c:897
 tcp_init_sock+0x74/0xa20 net/ipv4/tcp.c:445
 tcp_v6_init_sock+0x21/0xa0 net/ipv6/tcp_ipv6.c:2097
 inet6_create+0xef4/0x1260 net/ipv6/af_inet6.c:259
 __sock_create+0x4b3/0x9f0 net/socket.c:1605
 sock_create net/socket.c:1663 [inline]
 __sys_socket_create net/socket.c:1700 [inline]
 __sys_socket+0xd7/0x1b0 net/socket.c:1747
 __do_sys_socket net/socket.c:1761 [inline]
 __se_sys_socket net/socket.c:1759 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1759
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe1263915e7
Code: f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffec0f2df58 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe1263915e7
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 000000000000000a
RBP: 00007ffec0f2e68c R08: 00007ffec0f2df7c R09: 0079746972756365
R10: 00007ffec0f2dfe0 R11: 0000000000000206 R12: 00007fe1265b2ca0
R13: 00000000000927c0 R14: 00000000000473a7 R15: 00007fe1265b4e60
 </TASK>
----------------
Code disassembly (best guess):
   0:	74 05                	je     0x7
   2:	e8 5b dc 7e f6       	call   0xf67edc62
   7:	48 c7 44 24 20 00 00 	movq   $0x0,0x20(%rsp)
   e:	00 00
  10:	9c                   	pushf
  11:	8f 44 24 20          	pop    0x20(%rsp)
  15:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
  1a:	75 4f                	jne    0x6b
  1c:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 53 0a 47 f6       	call   0xf6470a82 <-- trapping instruction
  2f:	65 8b 05 dc 48 25 07 	mov    %gs:0x72548dc(%rip),%eax        # 0x7254912
  36:	85 c0                	test   %eax,%eax
  38:	74 40                	je     0x7a
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss