kernel

  1. X

    Dirty Frag: Universal Linux LPE - proxmox vulnerable (in the wild already)

    See: https://github.com/V4bel/dirtyfrag/tree/master (patch is included) Proof: https://github.com/V4bel/dirtyfrag/issues/11#issue-4402742566 TLDR: Anyone with ssh access to your proxmox servers can become root I have reported this to security@proxmox.com but since this is in the wild now...
  2. T

    Dell R730 cannot boot Proxmox 9 kernel (boot loop after install)

    Hello ! I'm relatively new to proxmox, I was installing it for my homelab on two dell R730 servers: - Dell PowerEdge R730 - 2x Intel Xeon E5-2699 v3 @ 2.30GHz (72 threads total) - 768GB RAM (DDR4 2133MHz) - Dell PERC H730 mini RAID controller (firmware 25.5.0.0) (RAID50 mode) - iDRAC 8 I...
  3. J

    VM freezes during snapshot/backup on NFS (Proxmox 9, no errors in logs)

    I have a Proxmox VE 9.1 production environment with 2 nodes and 1 qdevice (for quorum) using shared NFS storage. During snapshot or backup operations, VMs (especially Windows) become completely unresponsive: VM freezes completely Loses network connectivity (no ping) Console is frozen VM...
  4. E

    Nic problems with Realtek R8126 and R8127

    Hi Proxmox pros ! I'm installing a bare metal Proxmox and having some problems with my Realtek R8126 and R8127 network cards, which are having trouble being recognized by Proxmox VE 9.1.1 Version 9.1.1 uses kernel 6.17.2-1-pve by default and I've tried a lot of fix but nothing works. I managed...
  5. J

    Regression in 6.17.13-1/2-pve: DMAR faults with VFIO when intel_iommu=on iommu=pt (works on 6.17.9-1-pve)

    Hello, I would like to report what appears to be a kernel regression affecting VFIO passthrough. Summary On my system VFIO passthrough works correctly with kernel 6.17.9-1-pve, but after upgrading to 6.17.13-1-pve or 6.17.13-2-pve, DMAR faults start appearing after the VM runs for some time...
  6. L

    RTX 5080 (Blackwell GB203) VFIO Passthrough Failing on PVE 9.1 / Kernel 6.17 — Has Anyone Solved This?

    Hi everyone, I've spent a significant amount of time trying to get GPU passthrough working for an NVIDIA RTX 5080 on a fresh PVE 9.1 install and have hit a wall that I believe is a kernel-level incompatibility specific to PVE 9.1 / kernel 6.17. I'm posting here to share my findings, ask if...
  7. K

    Wrong kernel installed

    I've just had to restore some VMs on PVE due to power outage creating some corruption on my local-lvm array. When I restored the PBS VM from a recent backup, I noticed a lot of breakages (since fixed), with apparmor not allowing dhclient, python being broken and upgrades not working. But one...
  8. U

    enable CONFIG_RUST for Proxmox kernel

    Hello! BcacheFS is going to utilize CONFIG_RUST in the kernel, can this option be enabled in upcoming kernels? ❯ dmesg -Tw | grep bcachefs [...] [Sat Feb 21 12:51:51 2026] bcachefs (20b15bfd-e996-4f45-8ab6-07b15bd9bae7): kernel does not have CONFIG_RUST enabled; this will be required for...
  9. M

    Proxmox server not booting kernel 6.17.9

    Hello Proxmox community, I have a headless Proxmox server that I just upgraded by running apt dist-upgrade - as usual. One of the upgrades that got installed is the new kernel 6.17.9. After rebooting the system I noticed that it is still running the old kernel 6.17.4-2. I even tried pinning...
  10. H

    [SOLVED] Problem mit Update PBS

    Hallo, ich habe aktuell das Problem, das der Kernel nicht aktualisiert wird, da angeblich auf der Festplatte kein Platz mehr ist, was komisch ist, da dies nicht stimmt. Das ist der Fehler: No /etc/kernel/cmdline found - falling back to /proc/cmdline Copying and configuring kernels on...
  11. J

    Proxmox module files only present for 6.17 kernel when I am running 6.14 kernel

    I've just installed proxmox on a new NVME SSD and under /lib/modules the only subdirectories are: 6.17.2-1-pve & 6.17.4-1-pve. When I run uname -a the result is: Linux pve 6.14.8-2-pve #1 SMP PREEMPT_DYNAMIC PMX 6.14.8-2 (2025-07-22T10:04Z) x86_64 GNU/Linux I am trying to set up an NFS share...
  12. S

    Terrible I/O performance after installing 6.1.15-1-pve and 6.8.12-17-pve kernel

    I am running small ZFS pool (2x 2TB SATA SSDs) on my server. Not much things running, it was operating OK for long time (1.5 years). A week ago I upgraded the kernel while adding another node to my cluster - from the old one (not sure which version) to 6.1.15-1-pve. I did some reconfiguration of...
  13. S

    [SOLVED] Lange Kernel Liste

    Moin Allerseits, Ich hab das Gefühl das zu viel alte Kernels noch als rest vorhanden sind aber beim ausführen des Reinigens erhalte ich diese Ausgabe: apt update && apt dist-upgrade && apt autopurge && apt clean && apt purge ~c Get:1 http://security.debian.org/debian-security bookworm-security...
  14. D

    Recent PVE 9 kernel update - OOPSfest in mm/hugetlb

    Hi there :) I have two PostgreSQL servers running in Debian LXCs, both now fail after applying updates from the last 10 days. systemctl start postgresql hangs, and i'm left with dead ("X") postgres processes, the containers cannot be shut down or stopped, nothing in the postgres logs, systemd...
  15. L

    Dependency to isc-dhcp-client for kernel package

    Hi, apparently the package "proxmox-kernel-6.17" was the last one to not have a dependency to isc-dhcp-client. As ISC DHCP Client is EOL since 2022, we have replaced it with udhcpc and Puppet takes care that isc-dhcp-client is purged. Therefore, "apt autoremove" removes newer kernels. Why is...
  16. A

    Proxmox Kernel Panic: Unable to mount root fs ("Cannot open root device")

    Hello, I updated my PVE node, and after rebooting, I can't boot. Booting no longer works. I tried rescue mode, but I get to root@proxmox:/# on the USB drive; I'm limited. On usb key rescue : root@proxmox:/# view /boot/ System.map-6.14.8-2-pve config-6.14.8-2-pve vmlinuz-6.14.8-2-pve...
  17. M

    Pinning vCPU threads to real pCPU cores and preventing host OS to use those pCores

    Hello, I would like to pin VM vCPU threads to physical CPU threads. I mean when you defice CPU affinities in VM / Hardware / Processor / CPU affinitiy: n-m. E.g If I set CPU affinity to 2,5,9-11, I would like to have option that instead of current functionality that VM vCPU threads uses above...
  18. P

    Proxmox host crashing — best way to investigate?

    Hi - my Proxmox installation was running OK. A while back I did some updates which included a kernel update, the system updated to proxmox-kernel-6.8 version 6.8.12-13. A while after (around 2-3 days) I noticed that the system (an Intel NUC) was down — power light on but system unreachable. The...
  19. P

    Proxmox VE 9 host soft lockup on shutdown

    I am experiencing full host freezes on Proxmox VE 9 with kernel 6.14.11-2-pve. The system becomes unresponsive (SSH, Web UI all dead), and I need to reboot manually to recover. Environment CPU: Intel Core i5-12600 Memory: 64GB DDR4 (no ECC) Storage: rpool (NVMe Micron 256GB, firmware...
  20. G

    VMSCAPE CVE-2025-40300

    Hi, Derzeit wird in den Medien über VMSCAPE berichtet. https://www.tenable.com/cve/CVE-2025-40300 Ein Patch ist bereits im Upstream. Weiß man wann beziehungsweise ob das in pve / pmg kommt? Danke!
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