시작될 때마다 종료되고 종료하지 않으면 종료 중에 중단되는 프로세스

컴퓨터(Ubuntu 20.04.2 LTS)를 부팅할 때마다 작동하지 않는 프로세스가 나타납니다.

johan@johan-desktop:~$ ps -AF | grep qemu
libvirt+    1596       1  0     0     0  15 07:17 ?        00:00:00 [qemu-system-x86] <defunct>
johan       4109    4099  0  2260  2688   6 07:17 pts/1    00:00:00 grep --color=auto qemu

나는 그것을 잘 죽일 수 있고 kill 신호는 즉시 처리됩니다.

johan@johan-desktop:~$ sudo kill -9 1596
johan@johan-desktop:~$ ps -AF | grep qemu
johan       6924    4099  0  2260   660   6 07:30 pts/1    00:00:00 grep --color=auto qemu

이렇게 하지 않으면 시스템이 종료되는 동안 정지됩니다. UI는 닫히지만 "전원 끄기 목표 도달" 후에 멈춥니다.

처음에는 "Waiting for Process" 비트도 표시되지 않아 마지막 비트가 "Target Power Off Reached"가 되었지만 컴퓨터는 계속 실행되었습니다.

dmesg나는 다음을 참조하는 이 항목을 가지고 있습니다 qemu.

[   12.315976] BUG: kernel NULL pointer dereference, address: 0000000000000040
[   12.315978] #PF: supervisor read access in kernel mode
[   12.315978] #PF: error_code(0x0000) - not-present page
[   12.315979] PGD 0 P4D 0 
[   12.315981] Oops: 0000 [#1] SMP NOPTI
[   12.315983] CPU: 15 PID: 1596 Comm: qemu-system-x86 Tainted: P           OE     5.4.0-73-generic #82-Ubuntu
[   12.315984] Hardware name: System manufacturer System Product Name/ROG CROSSHAIR VII HERO, BIOS 2901 10/16/2019
[   12.315990] RIP: 0010:sev_ioctl_do_pdh_export+0x185/0x2f0 [ccp]
[   12.315991] Code: 48 01 d0 48 0b 05 db 0c 2c cb 49 89 44 24 10 8b 45 cc 41 89 44 24 18 eb 06 45 31 ff 45 31 f6 48 8b 05 07 5d 00 00 48 8d 53 0c <83> 78 40 01 74 1b 48 89 d7 48 89 55 b0 e8 29 f5 ff ff 48 8b 55 b0
[   12.315992] RSP: 0018:ffffa87f8248fd98 EFLAGS: 00010246
[   12.315993] RAX: 0000000000000000 RBX: ffffa87f8248fe00 RCX: 0000000000000000
[   12.315994] RDX: ffffa87f8248fe0c RSI: ffffffffc038e2d9 RDI: ffff9b2478407800
[   12.315994] RBP: ffffa87f8248fde8 R08: ffff9b247ebf0080 R09: ffff9b2478407800
[   12.315995] R10: ffff9b247ebe9ac0 R11: ffffffffffc352a6 R12: ffff9b246589f920
[   12.315996] R13: ffff9b247875f690 R14: 0000000000000000 R15: 0000000000000000
[   12.315997] FS:  00007f00b59735c0(0000) GS:ffff9b247ebc0000(0000) knlGS:0000000000000000
[   12.315997] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.315998] CR2: 0000000000000040 CR3: 0000000feb17e000 CR4: 0000000000340ee0
[   12.315999] Call Trace:
[   12.316004]  sev_ioctl+0x3f2/0x510 [ccp]
[   12.316007]  do_vfs_ioctl+0x407/0x670
[   12.316008]  ? putname+0x4a/0x50
[   12.316009]  ksys_ioctl+0x67/0x90
[   12.316011]  __x64_sys_ioctl+0x1a/0x20
[   12.316014]  do_syscall_64+0x57/0x190
[   12.316017]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   12.316018] RIP: 0033:0x7f00b6d7750b
[   12.316019] Code: 0f 1e fa 48 8b 05 85 39 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 39 0d 00 f7 d8 64 89 01 48
[   12.316020] RSP: 002b:00007fffd3258698 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   12.316021] RAX: ffffffffffffffda RBX: 000055aac046fab0 RCX: 00007f00b6d7750b
[   12.316022] RDX: 00007fffd32586b0 RSI: 00000000c0105300 RDI: 0000000000000010
[   12.316022] RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000005
[   12.316023] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffd32586b0
[   12.316023] R13: 00007fffd32587d0 R14: 00007fffd32587c8 R15: 00007fffd32586c0
[   12.316025] Modules linked in: ip6t_REJECT nf_reject_ipv6 xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter bpfilter bridge stp llc aufs overlay binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_usb_audio snd_hda_core snd_usbmidi_lib snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq uvcvideo kvm snd_seq_device videobuf2_vmalloc snd_timer videobuf2_memops videobuf2_v4l2 eeepc_wmi videobuf2_common snd asus_wmi videodev sparse_keymap joydev mc input_leds video wmi_bmof mxm_wmi ccp k10temp soundcore mac_hid nvidia_uvm(OE) sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 uas usb_storage hid_maltron hid_generic usbhid hid nvidia_drm(POE) nvidia_modeset(POE)
[   12.316048]  nvidia(POE) crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel drm_kms_helper crypto_simd cryptd syscopyarea glue_helper sysfillrect sysimgblt fb_sys_fops drm nvme igb i2c_piix4 dca i2c_algo_bit ahci nvme_core libahci gpio_amdpt wmi gpio_generic
[   12.316056] CR2: 0000000000000040
[   12.316057] ---[ end trace f90d6aeffb75307d ]---
[   12.316060] RIP: 0010:sev_ioctl_do_pdh_export+0x185/0x2f0 [ccp]
[   12.316060] Code: 48 01 d0 48 0b 05 db 0c 2c cb 49 89 44 24 10 8b 45 cc 41 89 44 24 18 eb 06 45 31 ff 45 31 f6 48 8b 05 07 5d 00 00 48 8d 53 0c <83> 78 40 01 74 1b 48 89 d7 48 89 55 b0 e8 29 f5 ff ff 48 8b 55 b0
[   12.316061] RSP: 0018:ffffa87f8248fd98 EFLAGS: 00010246
[   12.316062] RAX: 0000000000000000 RBX: ffffa87f8248fe00 RCX: 0000000000000000
[   12.316062] RDX: ffffa87f8248fe0c RSI: ffffffffc038e2d9 RDI: ffff9b2478407800
[   12.316063] RBP: ffffa87f8248fde8 R08: ffff9b247ebf0080 R09: ffff9b2478407800
[   12.316064] R10: ffff9b247ebe9ac0 R11: ffffffffffc352a6 R12: ffff9b246589f920
[   12.316064] R13: ffff9b247875f690 R14: 0000000000000000 R15: 0000000000000000
[   12.316065] FS:  00007f00b59735c0(0000) GS:ffff9b247ebc0000(0000) knlGS:0000000000000000
[   12.316066] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.316066] CR2: 0000000000000040 CR3: 0000000feb17e000 CR4: 0000000000340ee0

마지막으로, 종종 이 작업을 수행해야 합니다 systemctl restart libvirtd. 그렇지 않으면 virsh 명령이 중단되기 때문입니다.

부팅 시 qemu를 실행하려는 이유도 모르고 부팅 시 시작할 것으로 예상되는 VM도 없습니다.

qemu존재하지 않는 프로세스를 종료하고 libvirtd를 다시 시작한 후에는 정상적으로 실행되었습니다. 시작 시 뭔가 이상해져서 모든 것이 이상해진 것 같습니다. 어떤 아이디어가 있나요?