There is no such limitations on kernel command line.
The bug is present only in kernel v6.8
I have tested kernel versions v6.6 .... v6.7 .... v6.8-rc1. to v6.8-rc8.... v6.8.... v6.9-rc1 ... v6.9
The kernel bug was introduced in v6.8-rc1 and was undetected but fixed in v6.9-rc1. All older kernels v5.15 till v6.7 work fine and v6.9-rc1 to v6.9 work fine too.
This should be fixed in Linux 6.8 kernel for both linux-hwe-6.8 for Ubuntu 22.04.4 and linux-6.8 for Ubuntu 24.04.
I am bisecting right now to find the exact commit that introduced this bug.
@Jacopo - I disagree that this is MAAS bug.
There is no such limitations on kernel command line.
The bug is present only in kernel v6.8
I have tested kernel versions v6.6 .... v6.7 .... v6.8-rc1. to v6.8-rc8.... v6.8.... v6.9-rc1 ... v6.9
The kernel bug was introduced in v6.8-rc1 and was undetected but fixed in v6.9-rc1. All older kernels v5.15 till v6.7 work fine and v6.9-rc1 to v6.9 work fine too.
This should be fixed in Linux 6.8 kernel for both linux-hwe-6.8 for Ubuntu 22.04.4 and linux-6.8 for Ubuntu 24.04.
I am bisecting right now to find the exact commit that introduced this bug.