diff --git a/lib/tests/kunit_iov_iter.c b/lib/tests/kunit_iov_iter.c
index 37bd6eb25896..f02f7b7aa796 100644
--- a/lib/tests/kunit_iov_iter.c
+++ b/lib/tests/kunit_iov_iter.c
@@ -1128,7 +1128,7 @@ static void __init iov_kunit_iter_to_sg_kvec(struct kunit *test)
 	struct kvec kvec;
 	size_t bufsize;
 
-	bufsize = 0x100000;
+	bufsize = 0x200000;
 	iov_kunit_iter_to_sg_init(test, bufsize, false, &data);
 
 	kvec.iov_base = data.buffer;
@@ -1146,7 +1146,7 @@ static void __init iov_kunit_iter_to_sg_bvec(struct kunit *test)
 	struct bio_vec *bvec;
 	struct iov_iter iter;
 
-	bufsize = 0x100000;
+	bufsize = 0x200000;
 	iov_kunit_iter_to_sg_init(test, bufsize, false, &data);
 
 	bvec = kunit_kmalloc_array(test, data.npages, sizeof(*bvec),
@@ -1173,7 +1173,7 @@ static void __init iov_kunit_iter_to_sg_folioq(struct kunit *test)
 	struct iov_iter iter;
 	size_t bufsize;
 
-	bufsize = 0x100000;
+	bufsize = 0x200000;
 	iov_kunit_iter_to_sg_init(test, bufsize, false, &data);
 
 	folioq = iov_kunit_create_folioq(test);
@@ -1190,7 +1190,7 @@ static void __init iov_kunit_iter_to_sg_xarray(struct kunit *test)
 	struct iov_iter iter;
 	size_t bufsize;
 
-	bufsize = 0x100000;
+	bufsize = 0x200000;
 	iov_kunit_iter_to_sg_init(test, bufsize, false, &data);
 
 	xarray = iov_kunit_create_xarray(test);
@@ -1206,7 +1206,7 @@ static void __init iov_kunit_iter_to_sg_ubuf(struct kunit *test)
 	struct iov_iter iter;
 	size_t bufsize;
 
-	bufsize = 0x100000;
+	bufsize = 0x200000;
 	iov_kunit_iter_to_sg_init(test, bufsize, true, &data);
 
 	iov_iter_ubuf(&iter, READ, data.ubuf, bufsize);