Bug#1042815: linux-image-6.1.0-10-amd64: Fails to load kernel modules due to bpf/btf issue

[Salvatore Bonaccorso <carnil@debian.org>]

Control: tags -1 + moreinfo

Hi,

On Tue, Aug 01, 2023 at 07:22:17PM +1000, AP wrote:
> Package: linux-image-6.1.0-10-amd64
> Severity: important
> Tags: patch
> 
> Dear Maintainer,
> 
> Current kernel failed to load modules for MASQUERADE nat rules giving the following
> in dmesg:
> 
> [37404.063872] BPF: [99720] ENUM STROY 
> [37404.064350] BPF: size=4 vlen=14
> [37404.064699] BPF:  
> [37404.065000] BPF: Invalid name
> [37404.065287] BPF: 
> [37404.065463] failed to validate module [nf_conntrack] BTF: -22
> [37404.067137] missing module BTF, cannot register kfuncs
> 
> The following upstream patch fixes the issue:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3de4d22cc9ac7c9f38e10edcf54f9a8891a9c2aa
> 
> And it has been included in upstream stable 6.1 kernel releases since 6.1.39:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/?h=linux-6.1.y&ofs=400
> 
> Please include in Bookworm as its currently preventing netavark from using iptables
> to load the MASQUERADE module and, thus, preventing me from running containers.
> 
> Thanks. :)
> 
> PS: This, I think, is covered in bug 1003965 but my attempt to email into that bug appears
> to have failed. If it ever succeeds apologies for the dupe report. :(

is the assumption that you updated from 6.1.37-1 or 6.1.38-1 to
6.1.38-2 (or any of the combinations which did not bump ABI) but did
not reboot before loading the module correct?

The particular bug is something which was introduced in 5.18-rc1, and
fixed 6.1.39 and 6.4.4 following the fixing in 6.5-rc1. But if the
above assumption is correct then you just missed the reboot after the
kernel update.

Regards,
Salvatore