当我从 ubuntu 22.04 中删除 usb 网络设备时，内核崩溃了，所以我为 ubuntu 22.04 重新编译了 5.15.75 内核，此时内核不会崩溃。5.15.75 内核是从 kernel.org 下载的源代码，5.15.0 是 ubuntu 发行版自带的内核。是不是因为 5.15.0 内核中有 bug，在 5.15.75 中已经修复？崩溃日志如下
1,6996,243022202,-;BUG: kernel NULL pointer dereference, address: 0000000000000018
1,6997,243022205,-;#PF: supervisor read access in kernel mode
1,6998,243022207,-;#PF: error_code(0x0000) - not-present page
6,6999,243022208,-;PGD 800000004df9b067 P4D 800000004df9b067 PUD 0
4,7000,243022211,-;Oops: 0000 [#1] SMP PTI
4,7001,243022213,-;CPU: 3 PID: 154 Comm: kworker/3:2 Tainted: G OE 5.15.0-43-generic #46-Ubuntu
4,7002,243022216,-;Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/29/2019
4,7003,243022217,-;Workqueue: usb_hub_wq hub_event
4,7004,243022222,-;RIP: 0010:__dev_close_many+0x91/0x120
4,7005,243022226,-;Code: fe 48 8b 43 70 48 8d 58 90 49 39 c4 75 cc 4c 89 e7 e8 13 74 07 00 49 8b 04 24 48 8d 58 90 49 39 c4 74 34 48 8b 83 c8 00 00 00 <48> 8b 40 18 48 85 c0 74 08 48 89 df e8 5e 37 56 00 83 a3 c0 00 00
4,7006,243022228,-;RSP: 0018:ffff9c5a4060f930 EFLAGS: 00010206
4,7007,243022229,-;RAX: 0000000000000000 RBX: ffff90fc49eb4000 RCX: 0000000000000000
4,7008,243022230,-;RDX: 0000000000000001 RSI: 00000000fffffe01 RDI: ffffffff8fb1625e
4,7009,243022231,-;RBP: ffff9c5a4060f958 R08: ffffffff90f7f8b0 R09: 0000000000000000
4,7010,243022232,-;R10: ffff90fc4a659000 R11: 0000000000000000 R12: ffff9c5a4060f9c0
4,7011,243022233,-;R13: 0000000000000001 R14: ffff9c5a4060f9c0 R15: ffff9c5a4060f9c0
4,7012,243022234,-;FS: 0000000000000000(0000) GS:ffff90fcbbec0000(0000) knlGS:0000000000000000
4,7013,243022235,-;CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
4,7014,243022236,-;CR2: 0000000000000018 CR3: 000000004dc38004 CR4: 00000000003706e0
4,7015,243022254,-;Call Trace:
4,7016,243022256,-; <TASK>
4,7017,243022258,-; dev_close_many+0x7f/0x120
4,7018,243022261,-; ? vprintk_emit+0x8b/0x230
4,7019,243022265,-; unregister_netdevice_many+0x138/0x590
4,7020,243022267,-; ? vprintk+0x58/0x90
4,7021,243022269,-; unregister_netdevice_queue+0x90/0xe0
4,7022,243022270,-; unregister_netdev+0x1d/0x30
4,7023,243022273,-; usbnet_disconnect+0x5e/0xc0 [usbnet]
4,7024,243022279,-; USBNetDisconnect+0x68/0x80
4,7025,243022285,-; usb_unbind_interface+0x90/0x270
4,7026,243022288,-; __device_release_driver+0x27f/0x290
4,7027,243022291,-; device_release_driver+0x29/0x40
4,7028,243022292,-; bus_remove_device+0xde/0x150
4,7029,243022294,-; device_del+0x19c/0x3f0
4,7030,243022295,-; ? kobject_put+0x53/0x70
4,7031,243022297,-; usb_disable_device+0xde/0x270
4,7032,243022299,-; usb_disconnect.cold+0x7c/0x20c
4,7033,243022302,-; hub_port_connect+0x88/0x8e0
4,7034,243022304,-; ? usb_control_msg+0xfe/0x140
4,7035,243022306,-; hub_port_connect_change+0xa1/0x3b0
4,7036,243022308,-; port_event+0x5b7/0x700
4,7037,243022310,-; hub_event+0x1e7/0x430
4,7038,243022313,-; process_one_work+0x22b/0x3d0
4,7039,243022316,-; worker_thread+0x53/0x410
4,7040,243022318,-; ? process_one_work+0x3d0/0x3d0
4,7041,243022321,-; kthread+0x12a/0x150
4,7042,243022322,-; ? set_kthread_struct+0x50/0x50
4,7043,243022324,-; ret_from_fork+0x22/0x30
4,7044,243022328,-; </TASK>
4,7045,243022329,-;Modules linked in: qmi_wwan option(OE) usb_wwan cdc_wdm usbserial usbnet mii intel_rapl_msr intel_rapl_common crct10dif_pclmul ghash_clmulni_intel aesni_intel vmw_balloon crypto_simd cryptd rapl snd_ens1371 snd_ac97_codec nls_iso8859_1 gameport ac97_bus snd_pcm snd_seq_midi snd_seq_midi_event joydev snd_rawmidi vmwgfx input_leds serio_raw ttm snd_seq drm_kms_helper snd_seq_device cec rc_core snd_timer fb_sys_fops snd syscopyarea sysfillrect soundcore sysimgblt vmw_vmci mac_hid sch_fq_codel ipmi_devintf ipmi_msghandler msr parport_pc ppdev lp parport ramoops reed_solomon pstore_blk pstore_zone drm efi_pstore mtd ip_tables x_tables autofs4 hid_generic usbhid hid crc32_pclmul psmouse ahci e1000 libahci mptspi mptscsih mptbase xhci_pci xhci_pci_renesas scsi_transport_spi pata_acpi i2c_piix4
4,7046,243022369,-;CR2: 0000000000000018
4,7047,243022371,-;---[ end trace 8a6e2984b74b64ab ]---
4,7048,243022373,-;RIP: 0010:__dev_close_many+0x91/0x120
4,7049,243022376,-;Code: fe 48 8b 43 70 48 8d 58 90 49 39 c4 75 cc 4c 89 e7 e8 13 74 07 00 49 8b 04 24 48 8d 58 90 49 39 c4 74 34 48 8b 83 c8 00 00 00 <48> 8b 40 18 48 85 c0 74 08 48 89 df e8 5e 37 56 00 83 a3 c0 00 00
4,7050,243022378,-;RSP: 0018:ffff9c5a4060f930 EFLAGS: 00010206
4,7051,243022379,-;RAX: 0000000000000000 RBX: ffff90fc49eb4000 RCX: 0000000000000000
4,7052,243022380,-;RDX: 0000000000000001 RSI: 00000000fffffe01 RDI: ffffffff8fb1625e
4,7053,243022381,-;RBP: ffff9c5a4060f958 R08: ffffffff90f7f8b0 R09: 0000000000000000
4,7054,243022382,-;R10: ffff90fc4a659000 R11: 0000000000000000 R12: ffff9c5a4060f9c0
4,7055,243022383,-;R13: 0000000000000001 R14: ffff9c5a4060f9c0 R15: ffff9c5a4060f9c0
4,7056,243022384,-;FS: 0000000000000000(0000) GS:ffff90fcbbec0000(0000) knlGS:0000000000000000
4,7057,243022385,-;CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
4,7058,243022386,-;CR2: 0000000000000018 CR3: 000000004dc38004 CR4: 00000000003706e0