[ 2.605063] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 2.605184] #PF: supervisor write access in kernel mode [ 2.605225] #PF: error_code(0x0002) - not-present page [ 2.605261] PGD 0 P4D 0 [ 2.605287] Oops: Oops: 0002 [#1] SMP [ 2.605322] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 2.605399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.605452] Workqueue: netns cleanup_net [ 2.605532] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 2.605584] 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 [ 2.605711] RSP: 0018:ffffa3f58024fbb8 EFLAGS: 00010046 [ 2.605757] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 2.605817] RDX: ffffa3f58024fbf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.605886] RBP: ffffa3f58024fbf0 R08: ffffffffbca93e00 R09: 0000000000000101 [ 2.605948] R10: ffffffffbd6080d8 R11: ffffa3f58013cff8 R12: 0000000000000000 [ 2.606006] R13: ffffa3f58024fce8 R14: 0000000000000020 R15: ffffa3f58024fdf0 [ 2.606062] FS: 0000000000000000(0000) GS:ffff981800f11000(0000) knlGS:0000000000000000 [ 2.606137] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.606186] CR2: 0000000000000000 CR3: 0000000015446006 CR4: 0000000000772ef0 [ 2.606250] PKRU: 55555554 [ 2.606276] Call Trace: [ 2.606302] [ 2.606326] __cancel_work+0x29/0xe0 [ 2.606372] ? queue_delayed_work_on+0x54/0x60 [ 2.606419] __cancel_work_sync+0x16/0x80 [ 2.606454] __dev_close_many+0x113/0x2b0 [ 2.606498] netif_close_many+0x98/0x160 [ 2.606538] ? rcu_barrier_entrain+0xb0/0xb0 [ 2.606581] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 2.606623] ? unregister_netdevice_queue+0x29/0xe0 [ 2.606659] default_device_exit_batch+0x29b/0x300 [ 2.606704] ? mutex_lock+0x12/0x30 [ 2.606745] ops_undo_list+0xec/0x1f0 [ 2.606776] cleanup_net+0x1b7/0x300 [ 2.606809] process_one_work+0x162/0x380 [ 2.606852] worker_thread+0x299/0x3c0 [ 2.606886] ? rescuer_thread+0x4c0/0x4c0 [ 2.606920] kthread+0x101/0x1f0 [ 2.606953] ? kthreads_online_cpu+0x110/0x110 [ 2.606994] ? kthreads_online_cpu+0x110/0x110 [ 2.607038] ret_from_fork+0x11c/0x140 [ 2.607081] ? kthreads_online_cpu+0x110/0x110 [ 2.607124] ret_from_fork_asm+0x11/0x20 [ 2.607160] [ 2.607182] Modules linked in: [ 2.607218] CR2: 0000000000000000 [ 2.607254] ---[ end trace 0000000000000000 ]--- [ 2.607307] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 2.607350] 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 [ 2.607501] RSP: 0018:ffffa3f58024fbb8 EFLAGS: 00010046 [ 2.607544] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 2.607605] RDX: ffffa3f58024fbf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.607660] RBP: ffffa3f58024fbf0 R08: ffffffffbca93e00 R09: 0000000000000101 [ 2.607721] R10: ffffffffbd6080d8 R11: ffffa3f58013cff8 R12: 0000000000000000 [ 2.607784] R13: ffffa3f58024fce8 R14: 0000000000000020 R15: ffffa3f58024fdf0 [ 2.607854] FS: 0000000000000000(0000) GS:ffff981800f11000(0000) knlGS:0000000000000000 [ 2.607919] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.607969] CR2: 0000000000000000 CR3: 0000000015446006 CR4: 0000000000772ef0 [ 2.608026] PKRU: 55555554 [ 2.608050] note: kworker/u16:1[66] exited with irqs disabled WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr