Missing kernel source files

[Dakuon]

Hi,

We have been running rtpengine on bottlerocket for a while now, building the kernel module using a bootstrap-container and the kernel header files available from the host. Recently we upgraded our dev cluster to kubernetes v1.33 and noticed that the bootstrap stopped working.

After some digging I noticed that the source files for the kernel 6.12 is not provided - I checked and found no kernel files in 1.55, 1.57 and 1.58. I tried downloading kmod-kit for multiple bottlerocket versions and kubernetes v1.33 without any luck as well.
We tried looking at the changelog here, core-kit and kernel-kit without noticing any change related to this.

Do I need to use the bottlerocket-sdk image now? I assume we have missed information here.

From kubernetes v1.32

[root@admin]# ls -la /lib/modules/6.1.164/
total 352
drwxr-xr-x. 1 root root     20 Apr  1 22:12 .
drwxr-xr-x. 1 root root     21 Apr  9 07:01 ..
lrwxrwxrwx. 1 root root     24 Apr  1 22:12 build -> /usr/src/kernels/6.1.164
......
lrwxrwxrwx. 1 root root     24 Apr  1 22:12 source -> /usr/src/kernels/6.1.164
drwxr-xr-x. 3 root root     46 Apr  1 22:12 updates

From kubernetes v1.33

[root@admin]# ls -la /lib/modules/6.12.74/
total 336
drwxr-xr-x. 1 root root     20 Apr  1 22:12 .
drwxr-xr-x. 1 root root     21 Apr  9 00:00 ..
drwxr-xr-x. 1 root root     21 Apr  1 22:12 kernel
-rw-r--r--. 1 root root 151471 Apr  1 22:12 modules.alias
-rw-r--r--. 1 root root 158825 Apr  1 22:12 modules.alias.bin
-rw-r--r--. 1 root root   5739 Apr  1 22:12 modules.builtin
-rw-r--r--. 1 root root  10117 Apr  1 22:12 modules.builtin.alias.bin
-rw-r--r--. 1 root root   7665 Apr  1 22:12 modules.builtin.bin
-rw-r--r--. 1 root root  55251 Apr  1 22:12 modules.builtin.modinfo
-rw-r--r--. 1 root root  70462 Apr  1 22:12 modules.dep
-rw-r--r--. 1 root root 102911 Apr  1 22:12 modules.dep.bin
-rw-r--r--. 1 root root    300 Apr  1 22:12 modules.devname
-rw-r--r--. 1 root root  29558 Apr  1 22:12 modules.order
-rw-r--r--. 1 root root    744 Apr  1 22:12 modules.softdep
-rw-r--r--. 1 root root 308374 Apr  1 22:12 modules.symbols
-rw-r--r--. 1 root root 362324 Apr  1 22:12 modules.symbols.bin
-rw-r--r--. 1 root root     55 Apr  1 22:12 modules.weakdep
drwxr-xr-x. 3 root root     46 Apr  1 22:12 updates

Thanks