[    3.532190] bond0: (slave veth0): Enslaving as a backup interface with a down link
[    3.542103] bond0: (slave veth1): Enslaving as a backup interface with a down link
[    3.551702] br0: port 1(veth0) entered blocking state
[    3.551751] br0: port 1(veth0) entered disabled state
[    3.551795] veth0: entered allmulticast mode
[    3.551860] veth0: entered promiscuous mode
[    3.561721] br0: port 2(veth1) entered blocking state
[    3.561806] br0: port 2(veth1) entered disabled state
[    3.561882] veth1: entered allmulticast mode
[    3.561979] veth1: entered promiscuous mode
[    3.982655] br0: port 1(veth0) entered blocking state
[    3.982726] br0: port 1(veth0) entered forwarding state
[    3.982792] br0: port 2(veth1) entered blocking state
[    3.982832] br0: port 2(veth1) entered forwarding state
[    5.598671] bond0: (slave veth1): link status definitely up
[    5.598741] bond0: (slave veth1): making interface the new active one
[    5.598841] bond0: active interface up!
[    5.738028] veth1: left allmulticast mode
[    5.738108] veth1: left promiscuous mode
[    5.738174] br0: port 2(veth1) entered disabled state
[    5.738350] veth0: left allmulticast mode
[    5.738400] veth0: left promiscuous mode
[    5.738447] br0: port 1(veth0) entered disabled state
[    5.738632] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    5.738709] #PF: supervisor write access in kernel mode
[    5.738761] #PF: error_code(0x0002) - not-present page
[    5.738814] PGD 0 P4D 0 
[    5.738850] Oops: Oops: 0002 [#1] SMP
[    5.738900] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    5.738997] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    5.739061] Workqueue: netns cleanup_net
[    5.739116] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    5.739179] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 <f0> 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41
[    5.739346] RSP: 0018:ffffaaa500067c30 EFLAGS: 00010046
[    5.739400] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000001388
[    5.739469] RDX: ffffaaa500067c68 RSI: 0000000000000000 RDI: 0000000000000000
[    5.739543] RBP: ffffaaa500067c68 R08: ffff9f6c446c0e70 R09: ffff9f6c7ec24d60
[    5.739627] R10: ffff9f6c7ec24d78 R11: 000000b6000000b6 R12: 0000000000000000
[    5.739702] R13: ffffaaa500067d60 R14: 0000000000000020 R15: ffffaaa500067df0
[    5.739781] FS:  0000000000000000(0000) GS:ffff9f6ccb3b7000(0000) knlGS:0000000000000000
[    5.739857] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.739917] CR2: 0000000000000000 CR3: 0000000019841006 CR4: 0000000000772ef0
[    5.739998] PKRU: 55555554
[    5.740020] Call Trace:
[    5.740046]  <TASK>
[    5.740077]  __cancel_work+0x29/0xe0
[    5.740126]  __cancel_work_sync+0x16/0x80
[    5.740170]  __dev_close_many+0x113/0x2b0
[    5.740213]  netif_close_many+0x98/0x160
[    5.740255]  ? radix_tree_delete_item+0x67/0xc0
[    5.740307]  ? __call_rcu_common.constprop.0+0x91/0x330
[    5.740363]  unregister_netdevice_many_notify+0x1ea/0xaa0
[    5.740418]  ops_undo_list+0x1de/0x1f0
[    5.740460]  cleanup_net+0x1b7/0x2b0
[    5.740501]  process_one_work+0x162/0x380
[    5.740543]  worker_thread+0x299/0x3c0
[    5.740586]  ? rescuer_thread+0x4c0/0x4c0
[    5.740626]  kthread+0x101/0x1f0
[    5.740672]  ? kthreads_online_cpu+0x110/0x110
[    5.740724]  ? kthreads_online_cpu+0x110/0x110
[    5.740774]  ret_from_fork+0x11c/0x140
[    5.740817]  ? kthreads_online_cpu+0x110/0x110
[    5.740870]  ret_from_fork_asm+0x11/0x20
[    5.740916]  </TASK>
[    5.740940] Modules linked in:
[    5.740976] CR2: 0000000000000000
[    5.741013] ---[ end trace 0000000000000000 ]---
[    5.741069] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    5.741124] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 <f0> 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41
[    5.741297] RSP: 0018:ffffaaa500067c30 EFLAGS: 00010046
[    5.741343] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000001388
[    5.741413] RDX: ffffaaa500067c68 RSI: 0000000000000000 RDI: 0000000000000000
[    5.741486] RBP: ffffaaa500067c68 R08: ffff9f6c446c0e70 R09: ffff9f6c7ec24d60
[    5.741559] R10: ffff9f6c7ec24d78 R11: 000000b6000000b6 R12: 0000000000000000
[    5.741628] R13: ffffaaa500067d60 R14: 0000000000000020 R15: ffffaaa500067df0
[    5.741699] FS:  0000000000000000(0000) GS:ffff9f6ccb3b7000(0000) knlGS:0000000000000000
[    5.741779] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.741842] CR2: 0000000000000000 CR3: 0000000019841006 CR4: 0000000000772ef0
[    5.741917] PKRU: 55555554
[    5.741939] note: kworker/u16:0[12] exited with irqs disabled