diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 6023c6d..74c8f5e 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -562,10 +562,9 @@
 	void *base;
 
 	buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr);
-	base = vmalloc(buf_size);
+	base = vzalloc(buf_size);
 	if (!base)
 		return -ENOMEM;
-	memset(base, 0, buf_size);
 	d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr);
 	rc = diag204_do_store(d204->buf, diag204_buf_pages);
 	if (rc) {
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index 76058a5..08c6603 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -335,10 +335,9 @@
 		return -EINVAL;
 	if (user_len > 65536)
 		user_len = 65536;
-	buf = vmalloc (user_len + 1); /* maybe better use the stack? */
+	buf = vzalloc(user_len + 1); /* maybe better use the stack? */
 	if (buf == NULL)
 		return -ENOMEM;
-	memset(buf, 0, user_len + 1);
 
 	if (strncpy_from_user (buf, user_buf, user_len) < 0) {
 		rc = -EFAULT;