------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88802ed9cc90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 0 PID: 17516 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 17516 Comm: syz.4.3289 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 07 e0 92 fd 4d 8b 0f 48 c7 c7 80 12 bf 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 1a 3a f0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 f7 3c ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a00 EFLAGS: 00010296
RAX: aef53746d0f64200 RBX: dffffc0000000000 RCX: ffff888078660000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba684 R12: ffffffff8a394e30
R13: ffffffff8bbf1400 R14: ffff88802ed9cc90 R15: ffffffff8b6cf7e0
FS:  00007f933d8d46c0(0000) GS:ffff888126139000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c000 CR3: 0000000050818000 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:2474 [inline]
 slab_free mm/slub.c:6642 [inline]
 kfree+0x115/0x6d0 mm/slub.c:6849
 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:lock_release+0x89/0x3e0 kernel/locking/lockdep.c:5881
Code: bf df 0d 00 0f 84 44 02 00 00 65 8b 05 80 4d d1 10 85 c0 0f 85 35 02 00 00 65 4c 8b 3c 25 08 70 6e 92 41 83 bf 2c 0b 00 00 00 <0f> 85 1e 02 00 00 49 81 3e 40 23 32 93 0f 84 11 02 00 00 48 c7 44
RSP: 0018:ffffc9000c085df0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff908fd101 RCX: aef53746d0f64200
RDX: ffffc9000c085f01 RSI: ffffffff8bbf08c0 RDI: ffffffff8bbf0880
RBP: dffffc0000000000 R08: ffffc9000c087530 R09: 0000000000000000
R10: ffffc9000c085f78 R11: fffff52001810bf1 R12: ffffc9000c087540
R13: ffffffff81738c45 R14: ffffffff8df3d6e0 R15: ffff888078660000
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:897 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1195 [inline]
 unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf5/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x8d/0x4c0 mm/page_owner.c:332
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x234/0x290 mm/page_alloc.c:1845
 prep_new_page mm/page_alloc.c:1853 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3879
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5178
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3059 [inline]
 allocate_slab+0x96/0x350 mm/slub.c:3232
 new_slab mm/slub.c:3286 [inline]
 ___slab_alloc+0xf56/0x1990 mm/slub.c:4655
 __slab_alloc+0x65/0x100 mm/slub.c:4778
 __slab_alloc_node mm/slub.c:4854 [inline]
 slab_alloc_node mm/slub.c:5276 [inline]
 __kmalloc_cache_noprof+0x411/0x6f0 mm/slub.c:5766
 kmalloc_noprof include/linux/slab.h:957 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 ipv6_add_dev+0x24e/0x1370 net/ipv6/addrconf.c:388
 addrconf_notify+0x794/0x1010 net/ipv6/addrconf.c:3650
 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
 call_netdevice_notifiers net/core/dev.c:2281 [inline]
 register_netdevice+0x1608/0x1ae0 net/core/dev.c:11332
 veth_newlink+0x437/0xa60 drivers/net/veth.c:1856
 rtnl_newlink_create+0x310/0xb00 net/core/rtnetlink.c:3833
 __rtnl_newlink net/core/rtnetlink.c:3950 [inline]
 rtnl_newlink+0x16e4/0x1c80 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6951
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x505/0x830 net/socket.c:2630
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684
 __sys_sendmsg net/socket.c:2716 [inline]
 __do_sys_sendmsg net/socket.c:2721 [inline]
 __se_sys_sendmsg net/socket.c:2719 [inline]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2719
 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: 0033:0x7f933c98f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f933d8d4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f933cbe5fa0 RCX: 00007f933c98f749
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000006
RBP: 00007f933ca13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f933cbe6038 R14: 00007f933cbe5fa0 R15: 00007ffd51b406c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	bf df 0d 00 0f       	mov    $0xf000ddf,%edi
   5:	84 44 02 00          	test   %al,0x0(%rdx,%rax,1)
   9:	00 65 8b             	add    %ah,-0x75(%rbp)
   c:	05 80 4d d1 10       	add    $0x10d14d80,%eax
  11:	85 c0                	test   %eax,%eax
  13:	0f 85 35 02 00 00    	jne    0x24e
  19:	65 4c 8b 3c 25 08 70 	mov    %gs:0xffffffff926e7008,%r15
  20:	6e 92
  22:	41 83 bf 2c 0b 00 00 	cmpl   $0x0,0xb2c(%r15)
  29:	00
* 2a:	0f 85 1e 02 00 00    	jne    0x24e <-- trapping instruction
  30:	49 81 3e 40 23 32 93 	cmpq   $0xffffffff93322340,(%r14)
  37:	0f 84 11 02 00 00    	je     0x24e
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	44                   	rex.R