--- arch/x86/include/asm/traps.h.orig	2024-01-11 17:27:31.149340916 +0300
+++ arch/x86/include/asm/traps.h	2024-01-11 17:29:36.585340438 +0300
@@ -23,6 +23,9 @@
 void handle_invalid_op(struct pt_regs *regs);
 #endif
 
+void setup_invalid_op_handler(int (*handler)(struct pt_regs *regs));
+void remove_invalid_op_handler(void);
+
 static inline int get_si_code(unsigned long condition)
 {
 	if (condition & DR_STEP)
--- arch/x86/kernel/traps.c.orig	2024-01-05 17:13:40.000000000 +0300
+++ arch/x86/kernel/traps.c	2024-01-11 17:12:24.829344376 +0300
@@ -73,6 +73,21 @@
 
 DECLARE_BITMAP(system_vectors, NR_VECTORS);
 
+static int (*invalid_op_handler)(struct pt_regs *regs);
+
+void setup_invalid_op_handler(int (*handler)(struct pt_regs *regs))
+{
+	invalid_op_handler = handler;
+}
+EXPORT_SYMBOL_GPL(setup_invalid_op_handler);
+
+void remove_invalid_op_handler(void)
+{
+	invalid_op_handler = NULL;
+}
+EXPORT_SYMBOL_GPL(remove_invalid_op_handler);
+
+
 static inline void cond_local_irq_enable(struct pt_regs *regs)
 {
 	if (regs->flags & X86_EFLAGS_IF)
@@ -182,6 +197,7 @@
 		cond_local_irq_disable(regs);
 	}
 }
+/* EXPORT_SYMBOL_GPL(do_error_trap); */
 
 /*
  * Posix requires to provide the address of the faulting instruction for
@@ -209,15 +225,21 @@
 	do_error_trap(regs, 0, "overflow", X86_TRAP_OF, SIGSEGV, 0, NULL);
 }
 
-#ifdef CONFIG_X86_F00F_BUG
+#if 1 /* defined CONFIG_X86_F00F_BUG */
 void handle_invalid_op(struct pt_regs *regs)
 #else
 static inline void handle_invalid_op(struct pt_regs *regs)
 #endif
 {
+	if (invalid_op_handler)
+		if (invalid_op_handler(regs)) return;
+
 	do_error_trap(regs, 0, "invalid opcode", X86_TRAP_UD, SIGILL,
 		      ILL_ILLOPN, error_get_trap_addr(regs));
 }
+#if 1
+EXPORT_SYMBOL_GPL(handle_invalid_op);
+#endif
 
 static noinstr bool handle_bug(struct pt_regs *regs)
 {
--- kernel/kallsyms.c.orig	2024-01-05 17:13:40.000000000 +0300
+++ kernel/kallsyms.c	2024-01-11 12:48:04.281404912 +0300
@@ -203,6 +203,7 @@
 	}
 	return module_kallsyms_lookup_name(name);
 }
+EXPORT_SYMBOL_GPL(kallsyms_lookup_name);
 
 /*
  * Iterate over all symbols in vmlinux.  For symbols from modules use