[    3.009120] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    3.080325] br0: port 1(c1) entered blocking state
[    3.080404] br0: port 1(c1) entered disabled state
[    3.080504] c1: entered allmulticast mode
[    3.080614] c1: entered promiscuous mode
[    3.142613] br0: port 2(c2) entered blocking state
[    3.142686] br0: port 2(c2) entered disabled state
[    3.142746] c2: entered allmulticast mode
[    3.142871] c2: entered promiscuous mode
[    3.202876] br0: port 3(c3) entered blocking state
[    3.202970] br0: port 3(c3) entered disabled state
[    3.203045] c3: entered allmulticast mode
[    3.203138] c3: entered promiscuous mode
[    3.265575] br0: port 4(sender) entered blocking state
[    3.265641] br0: port 4(sender) entered disabled state
[    3.265709] sender: entered allmulticast mode
[    3.265799] sender: entered promiscuous mode
[    3.290101] br0: port 4(sender) entered blocking state
[    3.290187] br0: port 4(sender) entered forwarding state
[    3.290244] br0: port 3(c3) entered blocking state
[    3.290290] br0: port 3(c3) entered forwarding state
[    3.290335] br0: port 2(c2) entered blocking state
[    3.290391] br0: port 2(c2) entered forwarding state
[    3.290438] br0: port 1(c1) entered blocking state
[    3.290481] br0: port 1(c1) entered forwarding state
[    3.308046] Bridge firewalling registered
[   14.290412] ------------[ cut here ]------------
[   14.290520] refcount_t: underflow; use-after-free.
[   14.290609] WARNING: CPU: 1 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[   14.290688] Modules linked in: nf_conntrack_netlink nfnetlink_queue nft_queue nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables br_netfilter veth bridge stp llc
[   14.290829] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[   14.290900] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.290951] Workqueue: netns cleanup_net
[   14.290988] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[   14.291031] Code: 86 e8 18 ed b9 ff 90 0f 0b 90 90 c3 80 3d d9 ea ea 00 00 75 89 c6 05 d0 ea ea 00 01 90 48 c7 c7 78 de 71 86 e8 f5 ec b9 ff 90 <0f> 0b 90 90 c3 80 3d b4 ea ea 00 00 0f 85 62 ff ff ff c6 05 a7 ea
[   14.291170] RSP: 0018:ffffb011c0067d50 EFLAGS: 00010286
[   14.291213] RAX: 0000000000000000 RBX: ffffb011c0067d60 RCX: 00000000ffffdfff
[   14.291272] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[   14.291331] RBP: ffffb011c0067868 R08: ffffffff86b56d28 R09: 00000000ffffdfff
[   14.291401] R10: ffffffff86a76d40 R11: ffffffff86b26d40 R12: dead000000000122
[   14.291463] R13: 00000000fffba374 R14: 0000000000000001 R15: ffff98024112c000
[   14.291524] FS:  0000000000000000(0000) GS:ffff9802f7a58000(0000) knlGS:0000000000000000
[   14.291586] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   14.291646] CR2: 00007f8334dcf000 CR3: 0000000005855003 CR4: 0000000000772ef0
[   14.291707] PKRU: 55555554
[   14.291737] Call Trace:
[   14.291763]  <TASK>
[   14.291785]  netdev_run_todo+0x21a/0x550
[   14.291825]  ops_undo_list+0x1e3/0x1f0
[   14.291863]  cleanup_net+0x1b7/0x2b0
[   14.291896]  process_one_work+0x162/0x380
[   14.291934]  worker_thread+0x299/0x3c0
[   14.291967]  ? rescuer_thread+0x4c0/0x4c0
[   14.292000]  kthread+0x101/0x1f0
[   14.292047]  ? kthreads_online_cpu+0x110/0x110
[   14.292091]  ? kthreads_online_cpu+0x110/0x110
[   14.292133]  ret_from_fork+0x11c/0x140
[   14.292173]  ? kthreads_online_cpu+0x110/0x110
[   14.292213]  ret_from_fork_asm+0x11/0x20
[   14.292258]  </TASK>
[   14.292293] ---[ end trace 0000000000000000 ]---
[   14.292460] br0: port 1(c1) entered disabled state
[   14.292742] c1 (unregistering): left allmulticast mode
[   14.292793] c1 (unregistering): left promiscuous mode
[   14.292881] br0: port 1(c1) entered disabled state
[   14.340522] br0: port 2(c2) entered disabled state
[   14.340895] c2 (unregistering): left allmulticast mode
[   14.341000] c2 (unregistering): left promiscuous mode
[   14.341052] br0: port 2(c2) entered disabled state
[   14.389536] br0: port 3(c3) entered disabled state
[   14.389833] c3 (unregistering): left allmulticast mode
[   14.389899] c3 (unregistering): left promiscuous mode
[   14.389937] br0: port 3(c3) entered disabled state
[   14.446554] br0: port 4(sender) entered disabled state
[   14.446854] sender (unregistering): left allmulticast mode
[   14.446906] sender (unregistering): left promiscuous mode
[   14.446945] br0: port 4(sender) entered disabled state