No space left on device when trying to install a stock kernel image

[PeterPall]

I have no separate boot partition. Still when trying to install a kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D I get the following error message:

xitcp: cannot create regular file '/var/tmp/mkinitramfs_uNlQUF//lib/firmware/nvidia/gp100/gr/fecs_data.bin': No space left on device

If the initramfs filesystem isn't growable or big enough?

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: initramfs-tools 0.125ubuntu9
Uname: Linux 4.13.0-041300rc2-lowlatency x86_64
ApportVersion: 2.20.6-0ubuntu4
Architecture: amd64
Date: Mon Aug 7 06:37:27 2017
EcryptfsInUse: Yes
PackageArchitecture: all
SourcePackage: initramfs-tools
UpgradeStatus: No upgrade log present (probably fresh install)