diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index e79eaf047794..2b5fb35ca777 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -403,6 +403,23 @@ int bio_integrity_map_user(struct bio *bio, struct iov_iter *iter)
 	if (unlikely(ret < 0))
 		goto free_bvec;
 
+	/* Handle partial pinning. This can happen when pin_user_pages_fast()
+	 * returns fewer pages than requested
+	 */
+	if (user_backed_iter(iter) && unlikely(ret != bytes)) {
+		if (0 < ret) {
+			int npinned = DIV_ROUND_UP(offset + ret, PAGE_SIZE);
+			int i;
+
+			for (i = 0; i < npinned; i++)
+				unpin_user_page(pages[i]);
+		}
+		if (pages != stack_pages)
+				kvfree(pages);
+		ret = -EFAULT;
+		goto free_bvec;
+	}
+
 	nr_bvecs = bvec_from_pages(bvec, pages, nr_vecs, bytes, offset,
 				   &is_p2p);
 	if (pages != stack_pages)