diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 20ae67949e05..62324282fcae 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -4023,20 +4023,33 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file,
 			return -EINVAL;
 	}
 	runtime = substream->runtime;
-	if (runtime->state == SNDRV_PCM_STATE_OPEN)
-		return -EBADFD;
-	if (!(runtime->info & SNDRV_PCM_INFO_MMAP))
-		return -ENXIO;
+	/* don't race with buffer reallocation in hw_params/hw_free */
+	if (!atomic_inc_unless_negative(&runtime->buffer_accessing))
+		return -EBUSY;
+	if (runtime->state == SNDRV_PCM_STATE_OPEN) {
+		err = -EBADFD;
+		goto out;
+	}
+	if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) {
+		err = -ENXIO;
+		goto out;
+	}
 	if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED ||
-	    runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
-		return -EINVAL;
+	    runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) {
+		err = -EINVAL;
+		goto out;
+	}
 	size = area->vm_end - area->vm_start;
 	offset = area->vm_pgoff << PAGE_SHIFT;
 	dma_bytes = PAGE_ALIGN(runtime->dma_bytes);
-	if ((size_t)size > dma_bytes)
-		return -EINVAL;
-	if (offset > dma_bytes - size)
-		return -EINVAL;
+	if ((size_t)size > dma_bytes) {
+		err = -EINVAL;
+		goto out;
+	}
+	if (offset > dma_bytes - size) {
+		err = -EINVAL;
+		goto out;
+	}
 
 	area->vm_ops = &snd_pcm_vm_ops_data;
 	area->vm_private_data = substream;
@@ -4046,6 +4059,8 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file,
 		err = snd_pcm_lib_default_mmap(substream, area);
 	if (!err)
 		atomic_inc(&substream->mmap_count);
+out:
+	atomic_dec(&runtime->buffer_accessing);
 	return err;
 }
 EXPORT_SYMBOL(snd_pcm_mmap_data);