[ 13.689347] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 13.689438] #PF: supervisor write access in kernel mode [ 13.689476] #PF: error_code(0x0002) - not-present page [ 13.689515] PGD 0 P4D 0 [ 13.689544] Oops: Oops: 0002 [#1] SMP [ 13.689586] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 13.689650] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.689699] Workqueue: netns cleanup_net [ 13.689752] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 13.689812] 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 [ 13.689946] RSP: 0018:ffffc216c0067bb8 EFLAGS: 00010046 [ 13.689989] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 13.690042] RDX: ffffc216c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 13.690096] RBP: ffffc216c0067bf0 R08: ffffffffbc6779b0 R09: 0000000000000101 [ 13.690149] R10: ffffffffbce080d8 R11: ffffc216c0003ff8 R12: 0000000000000000 [ 13.690202] R13: ffffc216c0067ce8 R14: 0000000000000020 R15: ffffc216c0067df0 [ 13.690262] FS: 0000000000000000(0000) GS:ffff9e15015c1000(0000) knlGS:0000000000000000 [ 13.690321] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.690370] CR2: 0000000000000000 CR3: 000000000a89f003 CR4: 0000000000772ef0 [ 13.690428] PKRU: 55555554 [ 13.690458] Call Trace: [ 13.690488] [ 13.690530] __cancel_work+0x29/0xe0 [ 13.690569] ? dev_deactivate_many+0x2c9/0x300 [ 13.690621] __cancel_work_sync+0x16/0x80 [ 13.690651] __dev_close_many+0x11b/0x280 [ 13.690689] netif_close_many+0x98/0x160 [ 13.690721] unregister_netdevice_many_notify+0x1d8/0xa50 [ 13.690768] default_device_exit_batch+0x29b/0x300 [ 13.690813] ops_undo_list+0xec/0x1f0 [ 13.690852] cleanup_net+0x1b7/0x2b0 [ 13.690885] process_one_work+0x162/0x380 [ 13.690920] worker_thread+0x299/0x3c0 [ 13.690953] ? rescuer_thread+0x4c0/0x4c0 [ 13.690988] kthread+0x101/0x1f0 [ 13.691029] ? kthreads_online_cpu+0x110/0x110 [ 13.691067] ? kthreads_online_cpu+0x110/0x110 [ 13.691107] ret_from_fork+0x11c/0x140 [ 13.691154] ? kthreads_online_cpu+0x110/0x110 [ 13.691197] ret_from_fork_asm+0x11/0x20 [ 13.691237] [ 13.691259] Modules linked in: [ 13.691304] CR2: 0000000000000000 [ 13.691339] ---[ end trace 0000000000000000 ]--- [ 13.691382] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 13.691425] 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 [ 13.691538] RSP: 0018:ffffc216c0067bb8 EFLAGS: 00010046 [ 13.691578] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 13.691640] RDX: ffffc216c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 13.691694] RBP: ffffc216c0067bf0 R08: ffffffffbc6779b0 R09: 0000000000000101 [ 13.691748] R10: ffffffffbce080d8 R11: ffffc216c0003ff8 R12: 0000000000000000 [ 13.691813] R13: ffffc216c0067ce8 R14: 0000000000000020 R15: ffffc216c0067df0 [ 13.691868] FS: 0000000000000000(0000) GS:ffff9e15015c1000(0000) knlGS:0000000000000000 [ 13.691928] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.691976] CR2: 0000000000000000 CR3: 000000000a89f003 CR4: 0000000000772ef0 [ 13.692030] PKRU: 55555554 [ 13.692054] note: kworker/u16:0[12] exited with irqs disabled