diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index f6c0bdb0238be74bc386f7fa6e58500da496a78a..7c2afa8cc4e7ce9b3e92ff20dc100f17d578525b 100644
--- a/arch/loongarch/kernel/process.c
+++ b/arch/loongarch/kernel/process.c
@@ -280,13 +280,15 @@ unsigned long stack_top(void)
 {
 	unsigned long top = TASK_SIZE & PAGE_MASK;
 
-	/* Space for the VDSO & data page */
-	top -= PAGE_ALIGN(current->thread.vdso->size);
-	top -= PAGE_SIZE;
-
-	/* Space to randomize the VDSO base */
-	if (current->flags & PF_RANDOMIZE)
-		top -= VDSO_RANDOMIZE_SIZE;
+	if (current->thread.vdso) {
+		/* Space for the VDSO & data page */
+		top -= PAGE_ALIGN(current->thread.vdso->size);
+		top -= PAGE_SIZE;
+
+		/* Space to randomize the VDSO base */
+		if (current->flags & PF_RANDOMIZE)
+			top -= VDSO_RANDOMIZE_SIZE;
+	}
 
 	return top;
 }