diff --git a/MAINTAINERS b/MAINTAINERS
index 28e20975c26f..b8512887ffb1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22635,6 +22635,8 @@ L:	kasan-dev@googlegroups.com
 L:	linux-hardening@vger.kernel.org
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
+F:	arch/x86/include/asm/ubsan.h
+F:	arch/x86/kernel/ubsan.c
 F:	Documentation/dev-tools/ubsan.rst
 F:	include/linux/ubsan.h
 F:	lib/Kconfig.ubsan
diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h
index a3ec87d198ac..1023c149f93d 100644
--- a/arch/x86/include/asm/bug.h
+++ b/arch/x86/include/asm/bug.h
@@ -13,6 +13,14 @@
 #define INSN_UD2	0x0b0f
 #define LEN_UD2		2
 
+/*
+ * In clang we have UD1s reporting UBSAN failures on X86, 64 and 32bit.
+ */
+#define INSN_UD1	0xb90f
+#define LEN_UD1		2
+#define INSN_ASOP	0x67
+#define LEN_ASOP	1
+
 #ifdef CONFIG_GENERIC_BUG
 
 #ifdef CONFIG_X86_32
diff --git a/arch/x86/include/asm/ubsan.h b/arch/x86/include/asm/ubsan.h
new file mode 100644
index 000000000000..896ad7bf587f
--- /dev/null
+++ b/arch/x86/include/asm/ubsan.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_UBSAN_H
+#define _ASM_X86_UBSAN_H
+
+/*
+ * Clang Undefined Behavior Sanitizer trap mode support.
+ */
+#include <linux/bug.h>
+#include <linux/ubsan.h>
+#include <asm/ptrace.h>
+
+#ifdef CONFIG_UBSAN_TRAP
+void handle_ubsan_failure(struct pt_regs *regs, int insn);
+#else
+static inline void handle_ubsan_failure(struct pt_regs *regs, int insn) { return; }
+#endif /* CONFIG_UBSAN_TRAP */
+
+#endif /* _ASM_X86_UBSAN_H */
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 74077694da7d..fe1d9db27500 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -145,6 +145,7 @@ obj-$(CONFIG_UNWINDER_GUESS)		+= unwind_guess.o
 obj-$(CONFIG_AMD_MEM_ENCRYPT)		+= sev.o
 
 obj-$(CONFIG_CFI_CLANG)			+= cfi.o
+obj-$(CONFIG_UBSAN_TRAP)		+= ubsan.o
 
 obj-$(CONFIG_CALL_THUNKS)		+= callthunks.o
 
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 4fa0b17e5043..ee77c868090a 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -67,6 +67,7 @@
 #include <asm/vdso.h>
 #include <asm/tdx.h>
 #include <asm/cfi.h>
+#include <asm/ubsan.h>
 
 #ifdef CONFIG_X86_64
 #include <asm/x86_init.h>
@@ -79,6 +80,9 @@
 
 DECLARE_BITMAP(system_vectors, NR_VECTORS);
 
+/*
+ * Check for UD1, UD2, with or without Address Size Override Prefixes instructions.
+ */
 __always_inline int is_valid_bugaddr(unsigned long addr)
 {
 	if (addr < TASK_SIZE_MAX)
@@ -88,7 +92,13 @@ __always_inline int is_valid_bugaddr(unsigned long addr)
 	 * We got #UD, if the text isn't readable we'd have gotten
 	 * a different exception.
 	 */
-	return *(unsigned short *)addr == INSN_UD2;
+	if (*(u16 *)addr == INSN_UD2)
+		return INSN_UD2;
+	if (*(u16 *)addr == INSN_UD1)
+		return INSN_UD1;
+	if (*(u8 *)addr == INSN_ASOP && *(u16 *)(addr + 1) == INSN_UD1)
+		return INSN_ASOP;
+	return 0;
 }
 
 static nokprobe_inline int
@@ -216,6 +226,7 @@ static inline void handle_invalid_op(struct pt_regs *regs)
 static noinstr bool handle_bug(struct pt_regs *regs)
 {
 	bool handled = false;
+	int insn;
 
 	/*
 	 * Normally @regs are unpoisoned by irqentry_enter(), but handle_bug()
@@ -223,7 +234,8 @@ static noinstr bool handle_bug(struct pt_regs *regs)
 	 * irqentry_enter().
 	 */
 	kmsan_unpoison_entry_regs(regs);
-	if (!is_valid_bugaddr(regs->ip))
+	insn = is_valid_bugaddr(regs->ip);
+	if (insn == 0)
 		return handled;
 
 	/*
@@ -236,10 +248,15 @@ static noinstr bool handle_bug(struct pt_regs *regs)
 	 */
 	if (regs->flags & X86_EFLAGS_IF)
 		raw_local_irq_enable();
-	if (report_bug(regs->ip, regs) == BUG_TRAP_TYPE_WARN ||
-	    handle_cfi_failure(regs) == BUG_TRAP_TYPE_WARN) {
-		regs->ip += LEN_UD2;
-		handled = true;
+
+	if (insn == INSN_UD2) {
+		if (report_bug(regs->ip, regs) == BUG_TRAP_TYPE_WARN ||
+		handle_cfi_failure(regs) == BUG_TRAP_TYPE_WARN) {
+			regs->ip += LEN_UD2;
+			handled = true;
+		}
+	} else {
+		handle_ubsan_failure(regs, insn);
 	}
 	if (regs->flags & X86_EFLAGS_IF)
 		raw_local_irq_disable();
diff --git a/arch/x86/kernel/ubsan.c b/arch/x86/kernel/ubsan.c
new file mode 100644
index 000000000000..35b2039a3b8f
--- /dev/null
+++ b/arch/x86/kernel/ubsan.c
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Clang Undefined Behavior Sanitizer trap mode support.
+ */
+#include <linux/bug.h>
+#include <linux/string.h>
+#include <linux/printk.h>
+#include <linux/ubsan.h>
+#include <asm/ptrace.h>
+#include <asm/ubsan.h>
+
+/*
+ * Checks for the information embedded in the UD1 trap instruction
+ * for the UB Sanitizer in order to pass along debugging output.
+ */
+void handle_ubsan_failure(struct pt_regs *regs, int insn)
+{
+	u32 type = 0;
+
+	if (insn == INSN_ASOP) {
+		type = (*(u16 *)(regs->ip + LEN_ASOP + LEN_UD1));
+		if ((type & 0xFF) == 0x40)
+			type = (type >> 8) & 0xFF;
+	} else {
+		type = (*(u16 *)(regs->ip + LEN_UD1));
+		if ((type & 0xFF) == 0x40)
+			type = (type >> 8) & 0xFF;
+	}
+	pr_crit("%s at %pS\n", report_ubsan_failure(regs, type), (void *)regs->ip);
+}
