Broken on Debian 12

[Ne00n]

Hey,

I tried your kernel module, however it seems not to work on Debian 12 at all. It does compile, its slightly smaller, seems to load fine, however iptables is unhappy.

debian 11

rwxr-xr-x 1 root root 16960 Apr  2 15:16 /usr/lib/x86_64-linux-gnu/xtables/libxt_XOR.so

debian 12

rwxr-xr-x 1 root root 14864 Apr  1 16:23 /usr/lib/x86_64-linux-gnu/xtables/libxt_XOR.so

Debian 12 build

gcc -O2 -Wall -I../include -fPIC -c -o libxt_XOR.o libxt_XOR.c
libxt_XOR.c:119:13: warning: ‘_init’ defined but not used [-Wunused-function]
  119 | static void _init(void)
      |             ^~~~~
gcc -shared -o libxt_XOR.so libxt_XOR.o
rm libxt_XOR.o
make -C /lib/modules/6.1.0-18-amd64/build M=$PWD;
make[1]: Entering directory '/usr/src/linux-headers-6.1.0-18-amd64'
  CC [M]  /tmp/ipt_xor/kernel/xt_XOR.o
  MODPOST /tmp/ipt_xor/kernel/Module.symvers
  CC [M]  /tmp/ipt_xor/kernel/xt_XOR.mod.o
  LD [M]  /tmp/ipt_xor/kernel/xt_XOR.ko
  BTF [M] /tmp/ipt_xor/kernel/xt_XOR.ko
Skipping BTF generation for /tmp/ipt_xor/kernel/xt_XOR.ko due to unavailability of vmlinux

Any ideas?