[ 3.118792] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 3.118870] #PF: supervisor write access in kernel mode [ 3.118912] #PF: error_code(0x0002) - not-present page [ 3.118964] PGD 0 P4D 0 [ 3.118991] Oops: Oops: 0002 [#1] SMP [ 3.119034] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 3.119106] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.119161] Workqueue: netns cleanup_net [ 3.119205] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 3.119257] 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 [ 3.119409] RSP: 0018:ffffbf83c0067bb8 EFLAGS: 00010046 [ 3.119458] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 3.119519] RDX: ffffbf83c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 3.119581] RBP: ffffbf83c0067bf0 R08: ffffffff94c93e00 R09: 0000000000000101 [ 3.119638] R10: ffffffff958080d8 R11: ffffbf83c0003ff8 R12: 0000000000000000 [ 3.119704] R13: ffffbf83c0067ce8 R14: 0000000000000020 R15: ffffbf83c0067df0 [ 3.119768] FS: 0000000000000000(0000) GS:ffff9cf6e8b91000(0000) knlGS:0000000000000000 [ 3.119829] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.119880] CR2: 0000000000000000 CR3: 000000000602d003 CR4: 0000000000772ef0 [ 3.119954] PKRU: 55555554 [ 3.119977] Call Trace: [ 3.120004] [ 3.120029] __cancel_work+0x29/0xe0 [ 3.120064] ? queue_delayed_work_on+0x54/0x60 [ 3.120107] __cancel_work_sync+0x16/0x80 [ 3.120141] __dev_close_many+0x113/0x2b0 [ 3.120178] netif_close_many+0x98/0x160 [ 3.120214] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 3.120258] ? unregister_netdevice_queue+0x29/0xe0 [ 3.120298] default_device_exit_batch+0x29b/0x300 [ 3.120343] ? mutex_lock+0x12/0x30 [ 3.120379] ops_undo_list+0xec/0x1f0 [ 3.120414] cleanup_net+0x1b7/0x300 [ 3.120450] process_one_work+0x162/0x380 [ 3.120488] worker_thread+0x299/0x3c0 [ 3.120531] ? rescuer_thread+0x4c0/0x4c0 [ 3.120565] kthread+0x101/0x1f0 [ 3.120593] ? kthreads_online_cpu+0x110/0x110 [ 3.120638] ? kthreads_online_cpu+0x110/0x110 [ 3.120683] ret_from_fork+0x11c/0x140 [ 3.120727] ? kthreads_online_cpu+0x110/0x110 [ 3.120765] ret_from_fork_asm+0x11/0x20 [ 3.120801] [ 3.120824] Modules linked in: [ 3.120853] CR2: 0000000000000000 [ 3.120881] ---[ end trace 0000000000000000 ]--- [ 3.120920] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 3.120975] 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 [ 3.121114] RSP: 0018:ffffbf83c0067bb8 EFLAGS: 00010046 [ 3.121158] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 3.121220] RDX: ffffbf83c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 3.121277] RBP: ffffbf83c0067bf0 R08: ffffffff94c93e00 R09: 0000000000000101 [ 3.121339] R10: ffffffff958080d8 R11: ffffbf83c0003ff8 R12: 0000000000000000 [ 3.121396] R13: ffffbf83c0067ce8 R14: 0000000000000020 R15: ffffbf83c0067df0 [ 3.121458] FS: 0000000000000000(0000) GS:ffff9cf6e8b91000(0000) knlGS:0000000000000000 [ 3.121519] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.121572] CR2: 0000000000000000 CR3: 000000000602d003 CR4: 0000000000772ef0 [ 3.121635] PKRU: 55555554 [ 3.121653] note: kworker/u16:0[12] exited with irqs disabled WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr