diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index c7c943c661e6..0b8a1c3eae1b 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -176,8 +176,11 @@ EXPORT_SYMBOL_GPL(snd_devm_alloc_pages);
 int snd_dma_buffer_mmap(struct snd_dma_buffer *dmab,
 			struct vm_area_struct *area)
 {
-	const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab);
+	const struct snd_malloc_ops *ops;
 
+	if (!dmab)
+		return -ENOENT;
+	ops = snd_dma_get_ops(dmab);
 	if (ops && ops->mmap)
 		return ops->mmap(dmab, area);
 	else