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ODEBUG: free active (active state 0) object: ffff88816f2a2278 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: ksoftirqd/0/15
Modules linked in:
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/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 f7 4d 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:ffffc90000147a30 EFLAGS: 00010246
RAX: ffffffff8a7e1b10 RBX: ffffffff9a6f0488 RCX: 0000000000000000
RDX: ffffffff8c28b9a0 RSI: ffffffff8c28b420 RDI: ffffffff903b9ba0
RBP: ffffffff8bcf3a20 R08: ffff88816f2a2278 R09: ffffffff8bcf4d80
R10: dffffc0000000000 R11: ffffffff81b21a20 R12: ffff88816f2a2400
R13: ffffffff903b9ba0 R14: ffff88816f2a2000 R15: ffff88816f2a2278
FS:  0000000000000000(0000) GS:ffff88818dc8d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d9fc4f0d1 CR3: 000000010f85e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 kfree+0x13e/0x640
 kobject_put+0x228/0x560
 rcu_core+0x7cd/0x1070
 handle_softirqs+0x22a/0x840
 run_ksoftirqd+0x36/0x60
 smpboot_thread_fn+0x541/0xa50
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
