PVE 8 - Kernel 6.8.12-29 Issue

M

Matt84

New Member
Jun 10, 2026
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I've been running PVE 8 for quite a while and have kept my system up to date without issue until now. Tonight when I ran apt upgrade, it installed a new kernel version 6.8.12-29-pve and after reboot my management NIC would not connect, and my pfSense VM with 5 passed through NICs would not start.

I pulled the logs and found the below:

I could see the console, but attempting to login it would just freeze, and never ask for my password. The last item in the log was

Jun 10 21:11:20 pve systemd-journald[400]: Time spent on flushing to /var/log/journal/a2efdef8ee09453d933200b5aa21cbaa is 24.247ms for 998 entries.
I used proxmox-boot-tool to list the other kernels and I had 6.8.12-24 still installed so I chose that and it started up again without issue. I then tried 6.8.12-29 again and the system failed to let me login, failed to connect my management NIC and failed to start my pfSense VM.

I've pinned the old kernel version for now. Is there an issue with this -29 kernel version?

I pasted the start of my log and end of my log below. Full log at https://pastebin.com/AaTRX2aE

Code: 
Jun 10 21:11:20 pve kernel: Linux version 6.8.12-29-pve (build@proxmox) (gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC PMX 6.8.12-29 (2026-05-29T17:48Z) ()
Jun 10 21:11:20 pve kernel: Command line: initrd=\EFI\proxmox\6.8.12-29-pve\initrd.img-6.8.12-29-pve root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet intel_iommu=on iommu=pt
Jun 10 21:11:20 pve kernel: KERNEL supported cpus:
Jun 10 21:11:20 pve kernel:   Intel GenuineIntel
Jun 10 21:11:20 pve kernel:   AMD AuthenticAMD
Jun 10 21:11:20 pve kernel:   Hygon HygonGenuine
Jun 10 21:11:20 pve kernel:   Centaur CentaurHauls
Jun 10 21:11:20 pve kernel:   zhaoxin   Shanghai 
Jun 10 21:11:20 pve kernel: x86/split lock detection: #AC: crashing the kernel on kernel split_locks and warning on user-space split_locks

Jun 10 21:11:20 pve kernel: Kernel command line: initrd=\EFI\proxmox\6.8.12-29-pve\initrd.img-6.8.12-29-pve root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet intel_iommu=on iommu=pt
Jun 10 21:11:20 pve kernel: DMAR: IOMMU enabled
Jun 10 21:11:20 pve kernel: Unknown kernel command line parameters "boot=zfs", will be passed to user space.

Jun 10 21:11:20 pve systemd-journald[400]: Journal started
Jun 10 21:11:20 pve systemd-journald[400]: Runtime Journal (/run/log/journal/a2efdef8ee09453d933200b5aa21cbaa) is 8.0M, max 318.7M, 310.7M free.
Jun 10 21:11:20 pve systemd-modules-load[401]: Inserted module 'vfio'
Jun 10 21:11:20 pve systemd-modules-load[401]: Inserted module 'vfio_pci'
Jun 10 21:11:20 pve systemd-modules-load[401]: Failed to find module 'vfio_virqfd'
Jun 10 21:11:20 pve systemd-modules-load[401]: Inserted module 'vhost_net'
Jun 10 21:11:20 pve systemd[1]: Finished systemd-sysctl.service - Apply Kernel Variables.
Jun 10 21:11:20 pve systemd: Started systemd-journald.service - Journal Service.
Jun 10 21:11:20 pve systemd[1]: Starting systemd-journal-flush.service - Flush Journal to Persistent Storage...
Jun 10 21:11:20 pve systemd[1]: Finished systemd-tmpfiles-setup-dev.service - Create Static Device Nodes in /dev.
Jun 10 21:11:20 pve systemd[1]: Reached target local-fs-pre.target - Preparation for Local File Systems.
Jun 10 21:11:20 pve systemd[1]: Set up automount mnt-backups.automount.
Jun 10 21:11:20 pve systemd[1]: Starting systemd-udevd.service - Rule-based Manager for Device Events and Files...
Jun 10 21:11:20 pve systemd-journald[400]: Time spent on flushing to /var/log/journal/a2efdef8ee09453d933200b5aa21cbaa is 24.247ms for 998 entries.
-- Reboot --
 
I was on 24, I jumped to 29 during the update. I just tried 28.1 and it worked so definitely the 29 version. I'm pinning 28.1 now and I guess I just wait till 30 is released?
 
hmm I read in the bug reports above that 24 was the previous kernel but looking at the repo I saw 28.1. Now that I've installed and pinned that I still have 24 installed but it is not shown in proxmox-boot-tool. Have I broken something now?


Code: 
root@pve:~# proxmox-boot-tool kernel list
Manually selected kernels:
None.

Automatically selected kernels:
6.5.13-6-pve
6.8.12-28.1-pve
6.8.12-29-pve

Pinned kernel:
6.8.12-28.1-pve
root@pve:~#
 
if 28.1 works, use that, it contains more security fixes. proxmox-boot-tool will only pick the last N versions per series, you can add more with `proxmox-boot-tool kernel add ..`
 
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