Bug#1052584: linux-image-6.5.0-1-amd64: NFS4 stopped working in 6.5 with SELinux error

[Salvatore Bonaccorso <carnil@debian.org>]

Control: tags -1 + moreinfo

Hi Michal,

On Mon, Sep 25, 2023 at 12:52:16AM +0200, Michal Kaspar wrote:
> Package: src:linux
> Version: 6.5.3-1
> Severity: normal
> 
> Dear Maintainer,
> After upgrading to kernel version 6.5.0-1-amd64, the NFS4 stopped
> working on the station. Whe trying to mount nf4 FS, the mount fails with
> error:
> mount.nfs: an incorrect mount option was specified for
> The kernel log contains error message:
> kernel: SELinux: Unable to set superblock options before the security server
> is initialized
> This puzzles me a bit as I've got SELinux disabled (don't even have
> SELinux userspace installed, /sys/fs/selinux/enforce says 0). Tried
> booting with selinux=0 boot parameter but with the same result.
> Rebooting wih previou (6.4.0-4-amd64) kernel version fixes the problem
> immediately.

I suspect this is fixed by
https://git.kernel.org/linus/ccf1dab96be4caed7c5235b1cfdb606ac161b996
in 6.6-rc2, and which went into 6.5.5 (will be included on next
unstable upload). 

Can you apply the patch on top to confirm if that fixes the issue for
you?

Regards,
Salvatore