------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff8881903dda78 object type: timer_list hint: br_ip6_multicast_port_query_expired+0x0/0x380
WARNING: lib/debugobjects.c:632 at debug_check_no_obj_freed+0x405/0x550, CPU#0: ipvs-e:2:0/5821
Modules linked in:
CPU: 0 UID: 0 PID: 5821 Comm: ipvs-e:2:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:debug_check_no_obj_freed+0x44a/0x550
Code: 89 44 24 20 e8 17 4e 74 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 20 b4 28 8c 48 c7 c2 a0 b9 28 8c 8b 0c 24 4d 89 f8 50 <67> 48 0f b9 3a 48 83 c4 08 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc
RSP: 0018:ffffc90000007c70 EFLAGS: 00010246
RAX: ffffffff8a7e1f50 RBX: ffffffff9a6d9ce8 RCX: 0000000000000000
RDX: ffffffff8c28b9a0 RSI: ffffffff8c28b420 RDI: ffffffff903bc8a0
RBP: ffffffff8bcf3a20 R08: ffff8881903dda78 R09: ffffffff8bcf4d80
R10: dffffc0000000000 R11: ffffffff81b21a20 R12: ffff8881903ddc00
R13: ffffffff903bc8a0 R14: ffff8881903dd000 R15: ffff8881903dda78
FS:  0000000000000000(0000) GS:ffff88818dc87000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3b7bdf5b0 CR3: 000000000e74a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 kfree+0x13e/0x640
 kobject_put+0x228/0x560
 rcu_core+0x7cd/0x1070
 handle_softirqs+0x22a/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 ad f5 f5 f5 f7 c3 00 02 00 00 74 05 e8 b0 8b 21 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 24 78 e7 f5 65 8b 05 ed 30 8d 07 85 c0 74 18 5b 41 5e e9 51 48
RSP: 0018:ffffc900071bf9e8 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000282 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dfaaec4 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9030def7 R09: 1ffffffff2061bde
R10: dffffc0000000000 R11: fffffbfff2061bdf R12: ffffffff81b2cae0
R13: ffffc900071bfa80 R14: ffffffff9a6a1c08 R15: ffffc900071bfa80
 timer_init_key_on_stack+0x3c/0x110
 schedule_timeout+0x146/0x2c0
 ip_vs_estimation_kthread+0x29e8/0x3950
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
