diff --git a/kernel/Makefile b/kernel/Makefile
index 9a35b3bf..33b204e3 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -37,6 +37,18 @@ ifeq ($(shell grep -q "struct selinux_state " $(srctree)/security/selinux/includ
 ccflags-y += -DKSU_COMPAT_HAS_SELINUX_STATE
 endif
 
+ifeq ($(shell grep -q "strncpy_from_user_nofault" $(srctree)/include/linux/uaccess.h; echo $$?),0)
+ccflags-y += -DKSU_STRNCPY_FROM_USER_NOFAULT
+endif
+
+ifeq ($(shell grep -q "ssize_t kernel_read" $(srctree)/fs/read_write.c; echo $$?),0)
+ccflags-y += -DKSU_KERNEL_READ
+endif
+
+ifeq ($(shell grep "ssize_t kernel_write" $(srctree)/fs/read_write.c | grep -q "const void" ; echo $$?),0)
+ccflags-y += -DKSU_KERNEL_WRITE
+endif
+
 ifndef KSU_NEXT_EXPECTED_SIZE
 KSU_NEXT_EXPECTED_SIZE := 0x3e6
 endif
diff --git a/kernel/kernel_compat.c b/kernel/kernel_compat.c
index a1886433..841a0e52 100644
--- a/kernel/kernel_compat.c
+++ b/kernel/kernel_compat.c
@@ -107,7 +107,7 @@ struct file *ksu_filp_open_compat(const char *filename, int flags, umode_t mode)
 ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
 			       loff_t *pos)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0) || defined(KSU_KERNEL_READ)
 	return kernel_read(p, buf, count, pos);
 #else
 	loff_t offset = pos ? *pos : 0;
@@ -122,7 +122,7 @@ ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
 ssize_t ksu_kernel_write_compat(struct file *p, const void *buf, size_t count,
 				loff_t *pos)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0) || defined(KSU_KERNEL_WRITE)
 	return kernel_write(p, buf, count, pos);
 #else
 	loff_t offset = pos ? *pos : 0;
@@ -134,7 +134,7 @@ ssize_t ksu_kernel_write_compat(struct file *p, const void *buf, size_t count,
 #endif
 }
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0) || defined(KSU_STRNCPY_FROM_USER_NOFAULT)
 long ksu_strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
 				   long count)
 {