diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index b364231..1b0a349 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -407,6 +407,7 @@
 		return 0;
 
 	buf->ops = &page_cache_pipe_buf_ops;
+	buf->flags = 0;
 	get_page(page);
 	buf->page = page;
 	buf->offset = offset;
@@ -543,6 +544,7 @@
 			break;
 
 		buf->ops = &default_pipe_buf_ops;
+		buf->flags = 0;
 		buf->page = page;
 		buf->offset = 0;
 		buf->len = min_t(ssize_t, left, PAGE_SIZE);