[ 19.765427] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 19.765520] #PF: supervisor write access in kernel mode [ 19.765571] #PF: error_code(0x0002) - not-present page [ 19.765619] PGD 0 P4D 0 [ 19.765642] Oops: Oops: 0002 [#1] SMP [ 19.765679] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 19.765765] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.765821] Workqueue: netns cleanup_net [ 19.765863] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 19.765917] 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 [ 19.766079] RSP: 0018:ffffad14c024fbb8 EFLAGS: 00010046 [ 19.766124] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 19.766194] RDX: ffffad14c024fbf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 19.766263] RBP: ffffad14c024fbf0 R08: ffffffff87093e00 R09: 0000000000000101 [ 19.766332] R10: ffffffff87c080d8 R11: ffffad14c0003ff8 R12: 0000000000000000 [ 19.766400] R13: ffffad14c024fce8 R14: 0000000000000020 R15: ffffad14c024fdf0 [ 19.766473] FS: 0000000000000000(0000) GS:ffff9675f6791000(0000) knlGS:0000000000000000 [ 19.766541] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.766598] CR2: 0000000000000000 CR3: 0000000038e46006 CR4: 0000000000772ef0 [ 19.766669] PKRU: 55555554 [ 19.766690] Call Trace: [ 19.766716] [ 19.766740] __cancel_work+0x29/0xe0 [ 19.766781] ? dev_deactivate_many+0x2c9/0x300 [ 19.766834] __cancel_work_sync+0x16/0x80 [ 19.766876] __dev_close_many+0x113/0x2b0 [ 19.766919] netif_close_many+0x98/0x160 [ 19.766958] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 19.767004] default_device_exit_batch+0x29b/0x300 [ 19.767048] ? mutex_lock+0x12/0x30 [ 19.767084] ops_undo_list+0xec/0x1f0 [ 19.767119] cleanup_net+0x1b7/0x300 [ 19.767154] process_one_work+0x162/0x380 [ 19.767196] worker_thread+0x299/0x3c0 [ 19.767231] ? rescuer_thread+0x4c0/0x4c0 [ 19.767265] kthread+0x101/0x1f0 [ 19.767300] ? kthreads_online_cpu+0x110/0x110 [ 19.767352] ? kthreads_online_cpu+0x110/0x110 [ 19.767405] ret_from_fork+0x11c/0x140 [ 19.767445] ? kthreads_online_cpu+0x110/0x110 [ 19.767492] ret_from_fork_asm+0x11/0x20 [ 19.767528] [ 19.767551] Modules linked in: xt_conntrack nf_conntrack nf_defrag_ipv4 nft_compat nf_tables nf_defrag_ipv6 [ 19.767639] CR2: 0000000000000000 [ 19.767672] ---[ end trace 0000000000000000 ]--- [ 19.767717] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 19.767762] 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 [ 19.767924] RSP: 0018:ffffad14c024fbb8 EFLAGS: 00010046 [ 19.767970] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 19.768039] RDX: ffffad14c024fbf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 19.768108] RBP: ffffad14c024fbf0 R08: ffffffff87093e00 R09: 0000000000000101 [ 19.768176] R10: ffffffff87c080d8 R11: ffffad14c0003ff8 R12: 0000000000000000 [ 19.768246] R13: ffffad14c024fce8 R14: 0000000000000020 R15: ffffad14c024fdf0 [ 19.768318] FS: 0000000000000000(0000) GS:ffff9675f6791000(0000) knlGS:0000000000000000 [ 19.768393] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.768450] CR2: 0000000000000000 CR3: 0000000038e46006 CR4: 0000000000772ef0 [ 19.768523] PKRU: 55555554 [ 19.768545] note: kworker/u16:1[66] exited with irqs disabled