Crash when having CONFIG_NET_SCH_DUALPI2=m (was: Re: Fireqos and kernel with SECCOMP because of ssh 10.4+)

[Jorge Bastos]

Hi List,

I discovered that when i have CONFIG_NET_SCH_DUALPI2=m on the kernel, 
fireqos crashes the kernel on start,
Disabling this module, makes everything work OK,

Jorge,

On 2026-07-19 9:47, Jorge Bastos wrote:

> Marc,
> 
> I compiled a 7.1x kernel without seccomp, and i can confirm you that:
> 
> - kernel 7.1 with seccomp, fireqos/tc craches
> - kernel 7.1 without seccomp, fireqos/tc craches
> - kernel 8.18 as you stated also crashes
> 
> iproute2 tools are 7.1 (just a coincidence with the kernel version)
> 
> which list should i report this, can you help?
> 
> On 2026-07-18 19:42, Marc Lavallée wrote:
> 
> I just saw that you are running kernel 6.13:
> 
> CPU: 0 UID: 0 PID: 50796 Comm: tc Not tainted 6.18.38 #3 PREEMPT(none)
> Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, > 
> BIOS 090007 05/18/2018
> So I guess my advice would not help.
> 
> But still, instead of running Debian sid with your own vanilla kernel,
> maybe it'd work with the kernel provided with Debian
> and openssh also from Debian.
> 
> Marc
> 
> Le 2026-07-18 à 14 h 28, Marc Lavallée a écrit : hi Jorge,
> 
> Another possibility: maybe it's a Microsoft VM bug,
> and/or a compatibility issue with kernel 7.13.
> 
> So maybe it'd work with an earlier version of Debian,
> (running an earlier kernel), with a backport of openssh 10:
> 
> https://packages.debian.org/bookworm-backports/openssh-server
> or:
> https://packages.debian.org/trixie-backports/openssh-server
> 
> Marc
> 
> Le 2026-07-18 à 13 h 45, Jorge Bastos a écrit : Hi,
> 
> OK, going to try to report to kernel, but maybe would be more 
> productive if is was fireqos reporting kernel, i believe they would 
> give a different attention,
> 
> Would that be possible?
> 
> On 2026-07-18 9:11, Marcin Mirosław wrote:
> 
> W dniu 14.07.2026 o 13:25, Jorge Bastos pisze:
> 
> Howdy,
> 
> I've been using fireqos and perfect,
> But now that i have to use SECCOMP due to SSH 10.4+ needs, fireqos 
> crashes my kernel. Hi,
> I think this is kernel side bug not fireqos.