error when compiling on debian buster with kernel 4.19.0-5-amd64

[JohnDoe44526949]

root@debi:/home/lamer/kjackal# make
Replacing MARKER_SYS_CALL_TABLE symbol by ffffffff81c001e0 in source
Replacing MARKER_MODULE_KSET symbol ffffffff825e6bc8 in source
Replacing MARKER_CORE_KERNEL_TEXT symbol ffffffff8109ea00 in source

make -C "/lib/modules/4.19.0-5-amd64/build" M=/home/lamer/kjackal modules
make[1]: Entering directory '/usr/src/linux-headers-4.19.0-5-amd64'
CC [M] /home/lamer/kjackal/src/common.o
CC [M] /home/lamer/kjackal/src/module.o
/home/lamer/kjackal/src/module.c: In function ‘kj_module_find_hidden_from_addr’:
/home/lamer/kjackal/src/module.c:76:38: error: ‘struct module’ has no member named ‘module_core’
if (addr >= (unsigned long) mk->mod->module_core &&
^~
/home/lamer/kjackal/src/module.c:77:36: error: ‘struct module’ has no member named ‘module_core’
addr < (unsigned long) (mk->mod->module_core + mk->mod->core_size)) {
^~
/home/lamer/kjackal/src/module.c:77:61: error: ‘struct module’ has no member named ‘core_size’; did you mean ‘percpu_size’?
addr < (unsigned long) (mk->mod->module_core + mk->mod->core_size)) {
^~~~~~~~~
percpu_size
In file included from /home/lamer/kjackal/src/module.c:28:
/home/lamer/kjackal/src/module.c:83:55: error: ‘struct module’ has no member named ‘module_core’
KJ_DMESG("Address space from 0x%p to 0x%p", mk->mod->module_core,
^~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c:84:13: error: ‘struct module’ has no member named ‘module_core’
mk->mod->module_core + mk->mod->core_size);
^~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c:84:38: error: ‘struct module’ has no member named ‘core_size’; did you mean ‘percpu_size’?
mk->mod->module_core + mk->mod->core_size);
^~~~~~~~~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c: In function ‘kj_module_find_all_hidden’:
/home/lamer/kjackal/src/module.c:140:56: error: ‘struct module’ has no member named ‘module_core’
KJ_DMESG("Address space from 0x%p to 0x%p", mk->mod->module_core,
^~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c:141:14: error: ‘struct module’ has no member named ‘module_core’
mk->mod->module_core + mk->mod->core_size);
^~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c:141:39: error: ‘struct module’ has no member named ‘core_size’; did you mean ‘percpu_size’?
mk->mod->module_core + mk->mod->core_size);
^~~~~~~~~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c: In function ‘kj_module_list_symbols’:
/home/lamer/kjackal/src/module.c:156:47: error: ‘struct module’ has no member named ‘num_symtab’; did you mean ‘num_syms’?
KJ_DMESG("%d internal symbol(s) found", mod->num_symtab);
^~~~~~~~~~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c:159:23: error: ‘struct module’ has no member named ‘num_symtab’; did you mean ‘num_syms’?
for (i = 1; i < mod->num_symtab; i++) {
^~~~~~~~~~
num_syms
/home/lamer/kjackal/src/module.c:160:23: error: ‘struct module’ has no member named ‘strtab’; did you mean ‘state’?
printk("%s ", &mod->strtab[mod->symtab[i].st_name]);
^~~~~~
state
/home/lamer/kjackal/src/module.c:160:35: error: ‘struct module’ has no member named ‘symtab’; did you mean ‘syms’?
printk("%s ", &mod->strtab[mod->symtab[i].st_name]);
^~~~~~
syms
/home/lamer/kjackal/src/module.c: In function ‘kj_module_dump_memory’:
/home/lamer/kjackal/src/module.c:193:41: error: ‘struct module’ has no member named ‘module_init’
bytes_written = fp->f_op->write(fp, mod->module_init, mod->init_size,
^~
/home/lamer/kjackal/src/module.c:193:59: error: ‘struct module’ has no member named ‘init_size’
ytes_written = fp->f_op->write(fp, mod->module_init, mod->init_size,
^~

/home/lamer/kjackal/src/module.c:196:26: error: ‘struct module’ has no member named ‘init_size’
if (bytes_written != mod->init_size) {
^~
In file included from /home/lamer/kjackal/src/module.c:28:
/home/lamer/kjackal/src/module.c:198:23: error: ‘struct module’ has no member named ‘init_size’
bytes_written, mod->init_size);
^~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

/home/lamer/kjackal/src/module.c:205:41: error: ‘struct module’ has no member named ‘module_core’
bytes_written = fp->f_op->write(fp, mod->module_core, mod->core_size,
^~
/home/lamer/kjackal/src/module.c:205:61: error: ‘struct module’ has no member named ‘core_size’; did you mean ‘percpu_size’?
tes_written = fp->f_op->write(fp, mod->module_core, mod->core_size,
^~~~~~~~~
percpu_size
/home/lamer/kjackal/src/module.c:208:28: error: ‘struct module’ has no member named ‘core_size’; did you mean ‘percpu_size’?
if (bytes_written != mod->core_size) {
^~~~~~~~~
percpu_size
In file included from /home/lamer/kjackal/src/module.c:28:
/home/lamer/kjackal/src/module.c:210:25: error: ‘struct module’ has no member named ‘core_size’; did you mean ‘percpu_size’?
bytes_written, mod->core_size);
^~~~~~~~~
/home/lamer/kjackal/src/common.h:23:64: note: in definition of macro ‘KJ_DMESG’
efine KJ_DMESG(fmt, args...) printk("kjackal: " fmt "\n", ## args);
^~~~

make[4]: *** [/usr/src/linux-headers-4.19.0-5-common/scripts/Makefile.build:309: /home/lamer/kjackal/src/module.o] Error 1
make[3]: *** [/usr/src/linux-headers-4.19.0-5-common/Makefile:1539: module/home/lamer/kjackal] Error 2
make[2]: *** [Makefile:146: sub-make] Error 2
make[1]: *** [Makefile:8: all] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.19.0-5-amd64'
make: *** [Makefile:26: default] Error 2