diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index f6c0bdb0238be74bc386f7fa6e58500da496a78a..92f336cbd51e4e4140bbd07ab04ec2fcce84946f 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;
 
+	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;
+			top -= VDSO_RANDOMIZE_SIZE;
+	}
 
 	return top;
 }