[ 2.399137] ip (255) used greatest stack depth: 12136 bytes left [ 21.983514] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 21.983619] #PF: supervisor write access in kernel mode [ 21.983670] #PF: error_code(0x0002) - not-present page [ 21.983714] PGD 0 P4D 0 [ 21.983746] Oops: Oops: 0002 [#1] SMP [ 21.983786] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 21.983867] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.983917] Workqueue: netns cleanup_net [ 21.983962] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 21.984007] 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 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41 [ 21.984147] RSP: 0018:ffffa8a3c0067bb8 EFLAGS: 00010046 [ 21.984193] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000800 [ 21.984260] RDX: ffffa8a3c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 21.984328] RBP: ffffa8a3c0067bf0 R08: ffff8f9ec1393683 R09: 0000000000000002 [ 21.984389] R10: ffff8f9efec28640 R11: ffff8f9ec1392e90 R12: 0000000000000000 [ 21.984460] R13: ffffa8a3c0067ce8 R14: 0000000000000020 R15: ffffa8a3c0067df0 [ 21.984526] FS: 0000000000000000(0000) GS:ffff8f9f4d7d8000(0000) knlGS:0000000000000000 [ 21.984598] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.984655] CR2: 0000000000000000 CR3: 0000000003d0c003 CR4: 0000000000772ef0 [ 21.984719] PKRU: 55555554 [ 21.984743] Call Trace: [ 21.984769] [ 21.984795] __cancel_work+0x29/0xe0 [ 21.984835] ? queue_delayed_work_on+0x54/0x60 [ 21.984884] __cancel_work_sync+0x16/0x80 [ 21.984921] __dev_close_many+0x11b/0x280 [ 21.984956] netif_close_many+0x98/0x160 [ 21.984990] unregister_netdevice_many_notify+0x1d8/0xa50 [ 21.985037] ? unregister_netdevice_queue+0x29/0xe0 [ 21.985090] default_device_exit_batch+0x29b/0x300 [ 21.985134] ops_undo_list+0xec/0x1f0 [ 21.985176] cleanup_net+0x1b7/0x2b0 [ 21.985209] process_one_work+0x162/0x380 [ 21.985245] worker_thread+0x299/0x3c0 [ 21.985281] ? rescuer_thread+0x4c0/0x4c0 [ 21.985317] kthread+0x101/0x1f0 [ 21.985352] ? kthreads_online_cpu+0x110/0x110 [ 21.985408] ? kthreads_online_cpu+0x110/0x110 [ 21.985452] ret_from_fork+0x11c/0x140 [ 21.985493] ? kthreads_online_cpu+0x110/0x110 [ 21.985539] ret_from_fork_asm+0x11/0x20 [ 21.985580] [ 21.985604] Modules linked in: inet_diag nft_tproxy nf_tproxy_ipv6 nf_tproxy_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth [ 21.985710] CR2: 0000000000000000 [ 21.985744] ---[ end trace 0000000000000000 ]--- [ 21.985786] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 21.985834] 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 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41 [ 21.985985] RSP: 0018:ffffa8a3c0067bb8 EFLAGS: 00010046 [ 21.986035] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000800 [ 21.986106] RDX: ffffa8a3c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 21.986170] RBP: ffffa8a3c0067bf0 R08: ffff8f9ec1393683 R09: 0000000000000002 [ 21.986233] R10: ffff8f9efec28640 R11: ffff8f9ec1392e90 R12: 0000000000000000 [ 21.986293] R13: ffffa8a3c0067ce8 R14: 0000000000000020 R15: ffffa8a3c0067df0 [ 21.986359] FS: 0000000000000000(0000) GS:ffff8f9f4d7d8000(0000) knlGS:0000000000000000 [ 21.986437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.986489] CR2: 0000000000000000 CR3: 0000000003d0c003 CR4: 0000000000772ef0 [ 21.986569] PKRU: 55555554 [ 21.986593] note: kworker/u16:0[12] exited with irqs disabled