After passing device, lxc won't boot

[Anagastes]

Describe the bug
I'm followd this to passthrough the audio device to lxc.

after it, the lxc didnt boot with latest pve and kernel

To Reproduce
Follow the wiki with pct set ^^

Expected behavior
lxc boot with sound devices :)

ENV (please complete the following information):

• OS: debian12
• ARCH: arm64
• Version:

proxmox-ve: 8.2.0 (running kernel: 6.6.31+rpt-rpi-v8)
pve-manager: 8.2.4 (running version: 8.2.4/0098b77b88c86db8)
proxmox-kernel-helper: 8.1.0
ceph-fuse: 17.2.7-pve3
corosync: 3.1.7-pve3
criu: 3.17.1-2
glusterfs-client: 10.3-5
ifupdown: residual config
ifupdown2: 3.2.0-1+pmx8
libjs-extjs: 7.0.0-4
libknet1: 1.28-pve1
libproxmox-acme-perl: 1.5.1
libproxmox-backup-qemu0: 1.4.0
libproxmox-rs-perl: 0.3.3
libpve-access-control: 8.1.4
libpve-apiclient-perl: 3.3.1
libpve-cluster-api-perl: 8.0.7
libpve-cluster-perl: 8.0.7
libpve-common-perl: 8.2.1
libpve-guest-common-perl: 5.1.3
libpve-http-server-perl: 5.1.0
libpve-network-perl: 0.9.8
libpve-rs-perl: 0.8.9
libpve-storage-perl: 8.2.1
libspice-server1: 0.15.1-1
lvm2: 2.03.16-2
lxc-pve: 6.0.0-1
lxcfs: 6.0.0-pve2
novnc-pve: 1.4.0-3
proxmox-backup-client: 3.2.5-1
proxmox-backup-file-restore: 3.2.4-1
proxmox-kernel-helper: 8.1.0
proxmox-mail-forward: 0.2.0
proxmox-mini-journalreader: 1.4.0
proxmox-offline-mirror-helper: 0.6.2
proxmox-widget-toolkit: 4.2.3
pve-cluster: 8.0.7
pve-container: 5.1.11
pve-docs: 8.2.2
pve-edk2-firmware: not correctly installed
pve-firewall: 5.0.7
pve-firmware: not correctly installed
pve-ha-manager: 4.0.5
pve-i18n: 3.2.2
pve-qemu-kvm: 9.0.2-1
pve-xtermjs: 5.3.0-3
qemu-server: 8.2.1
smartmontools: 7.3-pve1
spiceterm: 3.3.0
swtpm: 0.8.0+pve1
vncterm: 1.8.0
zfsutils-linux: 2.2.4-pve1

Additional context
I will help to debug, but in the normal debug output only this is found...

lxc-start 104 20240906080954.393 ERROR    utils - ../src/lxc/utils.c:run_buffer:571 - Script exited with status 2
lxc-start 104 20240906080954.393 ERROR    start - ../src/lxc/start.c:lxc_init:845 - Failed to run lxc.hook.pre-start for container "104"
lxc-start 104 20240906080954.393 ERROR    start - ../src/lxc/start.c:__lxc_start:2034 - Failed to initialize container "104"
lxc-start 104 20240906080954.393 INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxc/hooks/lxc-pve-poststop-hook" for container "104", config section "lxc"
lxc-start 104 20240906080956.320 DEBUG    utils - ../src/lxc/utils.c:run_buffer:560 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: umount: /var/lib/lxc/.pve-staged-mounts/mp1: not mounted.

lxc-start 104 20240906080956.321 DEBUG    utils - ../src/lxc/utils.c:run_buffer:560 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: command 'umount -- /var/lib/lxc/.pve-staged-mounts/mp1' failed: exit code 32

lxc-start 104 20240906080956.350 DEBUG    utils - ../src/lxc/utils.c:run_buffer:560 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: umount: /var/lib/lxc/.pve-staged-mounts/mp0: not mounted.

lxc-start 104 20240906080956.353 DEBUG    utils - ../src/lxc/utils.c:run_buffer:560 - Script exec /usr/share/lxc/hooks/lxc-pve-poststop-hook 104 lxc post-stop produced output: command 'umount -- /var/lib/lxc/.pve-staged-mounts/mp0' failed: exit code 32

lxc-start 104 20240906080956.439 INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxcfs/lxc.reboot.hook" for container "104", config section "lxc"
lxc-start 104 20240906080956.943 ERROR    lxc_start - ../src/lxc/tools/lxc_start.c:lxc_start_main:307 - The container failed to start
lxc-start 104 20240906080956.943 ERROR    lxc_start - ../src/lxc/tools/lxc_start.c:lxc_start_main:312 - Additional information can be obtained by setting the --logfile and --logpriority options

[tiehfood]

Same issue here

[mgranberry]

lxc-start -n 128 -F -lDEBUG -o lxc-101.log
ot@orange1:/tmp# cat lxc-101.log 
lxc-start 128 20241123045123.780 INFO     confile - ../src/lxc/confile.c:set_config_idmaps:2273 - Read uid map: type u nsid 0 hostid 100000 range 65536
lxc-start 128 20241123045123.780 INFO     confile - ../src/lxc/confile.c:set_config_idmaps:2273 - Read uid map: type g nsid 0 hostid 100000 range 65536
lxc-start 128 20241123045123.785 INFO     lsm - ../src/lxc/lsm/lsm.c:lsm_init_static:38 - Initialized LSM security driver AppArmor
lxc-start 128 20241123045123.785 INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxc/hooks/lxc-pve-prestart-hook" for container "128", config section "lxc"
lxc-start 128 20241123045124.669 DEBUG    utils - ../src/lxc/utils.c:run_buffer:560 - Script exec /usr/share/lxc/hooks/lxc-pve-prestart-hook 128 lxc pre-start produced output: https://github.com/jiangcuo/Proxmox-Arm64/issues/58 at /usr/share/perl5/PVE/Tools.pm line 1756.

lxc-start 128 20241123045124.700 ERROR    utils - ../src/lxc/utils.c:run_buffer:571 - Script exited with status 2
lxc-start 128 20241123045124.700 ERROR    start - ../src/lxc/start.c:lxc_init:845 - Failed to run lxc.hook.pre-start for container "128"
lxc-start 128 20241123045124.700 ERROR    start - ../src/lxc/start.c:__lxc_start:2034 - Failed to initialize container "128"
lxc-start 128 20241123045124.701 INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxcfs/lxc.reboot.hook" for container "128", config section "lxc"
lxc-start 128 20241123045125.206 INFO     utils - ../src/lxc/utils.c:run_script_argv:587 - Executing script "/usr/share/lxc/hooks/lxc-pve-poststop-hook" for container "128", config section "lxc"
lxc-start 128 20241123045126.466 ERROR    lxc_start - ../src/lxc/tools/lxc_start.c:lxc_start_main:307 - The container failed to start
lxc-start 128 20241123045126.467 ERROR    lxc_start - ../src/lxc/tools/lxc_start.c:lxc_start_main:312 - Additional information can be obtained by setting the --logfile and --logpriority options

PVE is expecting to be able to mknod the new devices, but that functionality got stripped in jiangcuo/Proxmox-Arm64#58 and hasn't been reintroduced.