CVE-2023-53082: In the Linux kernel, the following vulnerability has been resolved:  vp_vdpa: fix the crash in hot unplug with vp_vdpa  While unplugging the vp_vdpa device, it triggers a kernel panic The root cause is: vdpa_mgmtdev_unregister() will accesses modern devices which will cause a use after free. So need to change the sequence in vp_vdpa_remove  [  195.003359] BUG: unable to handle page fault for address: ff4e8beb80199014 [  195.004012] #PF: supervisor read access in kernel mode [  195.004486] #PF: error_code(0x0000) - not-present page [  195.004960] PGD 100000067 P4D 1001b6067 PUD 1001b7067 PMD 1001b8067 PTE 0 [  195.005578] Oops: 0000 1 PREEMPT SMP PTI [  195.005968] CPU: 13 PID: 164 Comm: kworker/u56:10 Kdump: loaded Not tainted 5.14.0-252.el9.x86_64 #1 [  195.006792] Hardware name: Red Hat KVM/RHEL, BIOS edk2-20221207gitfff6d81270b5-2.el9 unknown [  195.007556] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [  195.008059] RIP: 0010:ioread8+0x31/0x80 [  195.008418] Code: 77 28 48 81 ff 00 00 01 00 76 0b 89 fa ec 0f b6 c0 c3 cc cc cc cc 8b 15 ad 72 93 01 b8 ff 00 00 00 85 d2 75 0f c3 cc cc cc cc <8a> 07 0f b6 c0 c3 cc cc cc cc 83 ea 01 48 83 ec 08 48 89 fe 48 c7 [  195.010104] RSP: 0018:ff4e8beb8067bab8 EFLAGS: 00010292 [  195.010584] RAX: ffffffffc05834a0 RBX: ffffffffc05843c0 RCX: ff4e8beb8067bae0 [  195.011233] RDX: ff1bcbd580f88000 RSI: 0000000000000246 RDI: ff4e8beb80199014 [  195.011881] RBP: ff1bcbd587e39000 R08: ffffffff916fa2d0 R09: ff4e8beb8067ba68 [  195.012527] R10: 000000000000001c R11: 0000000000000000 R12: ff1bcbd5a3de9120 [  195.013179] R13: ffffffffc062d000 R14: 0000000000000080 R15: ff1bcbe402bc7805 [  195.013826] FS:  0000000000000000(0000) GS:ff1bcbe402740000(0000) knlGS:0000000000000000 [  195.014564] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [  195.015093] CR2: ff4e8beb80199014 CR3: 0000000107dea002 CR4: 0000000000771ee0 [  195.015741] PKRU: 55555554 [  195.016001] Call Trace: [  195.016233]  <TASK> [  195.016434]  vp_modern_get_status+0x12/0x20 [  195.016823]  vp_vdpa_reset+0x1b/0x50 [vp_vdpa] [  195.017238]  virtio_vdpa_reset+0x3c/0x48 [virtio_vdpa] [  195.017709]  remove_vq_common+0x1f/0x3a0 [virtio_net] [  195.018178]  virtnet_remove+0x5d/0x70 [virtio_net] [  195.018618]  virtio_dev_remove+0x3d/0x90 [  195.018986]  device_release_driver_internal+0x1aa/0x230 [  195.019466]  bus_remove_device+0xd8/0x150 [  195.019841]  device_del+0x18b/0x3f0 [  195.020167]  ? kernfs_find_ns+0x35/0xd0 [  195.020526]  device_unregister+0x13/0x60 [  195.020894]  unregister_virtio_device+0x11/0x20 [  195.021311]  device_release_driver_internal+0x1aa/0x230 [  195.021790]  bus_remove_device+0xd8/0x150 [  195.022162]  device_del+0x18b/0x3f0 [  195.022487]  device_unregister+0x13/0x60 [  195.022852]  ? vdpa_dev_remove+0x30/0x30 [vdpa] [  195.023270]  vp_vdpa_dev_del+0x12/0x20 [vp_vdpa] [  195.023694]  vdpa_match_remove+0x2b/0x40 [vdpa] [  195.024115]  bus_for_each_dev+0x78/0xc0 [  195.024471]  vdpa_mgmtdev_unregister+0x65/0x80 [vdpa] [  195.024937]  vp_vdpa_remove+0x23/0x40 [vp_vdpa] [  195.025353]  pci_device_remove+0x36/0xa0 [  195.025719]  device_release_driver_internal+0x1aa/0x230 [  195.026201]  pci_stop_bus_device+0x6c/0x90 [  195.026580]  pci_stop_and_remove_bus_device+0xe/0x20 [  195.027039]  disable_slot+0x49/0x90 [  195.027366]  acpiphp_disable_and_eject_slot+0x15/0x90 [  195.027832]  hotplug_event+0xea/0x210 [  195.028171]  ? hotplug_event+0x210/0x210 [  195.028535]  acpiphp_hotplug_notify+0x22/0x80 [  195.028942]  ? hotplug_event+0x210/0x210 [  195.029303]  acpi_device_hotplug+0x8a/0x1d0 [  195.029690]  acpi_hotplug_work_fn+0x1a/0x30 [  195.030077]  process_one_work+0x1e8/0x3c0 [  195.030451]  worker_thread+0x50/0x3b0 [  195.030791]  ? rescuer_thread+0x3a0/0x3a0 [  195.031165]  kthread+0xd9/0x100 [  195.031459]  ? kthread_complete_and_exit+0x20/0x20 [  195.031899]  ret_from_fork+0x22/0x30 [  195.032233]  </TASK>