The functions copy_page_to_iter_pipe() and push_pipe() can both allocate a new pipe_buffer, but the "flags" member initializer is missing.

Fixes: 241699cd72a8 ("new iov_iter flavour: pipe-backed") To: Alexander Viro viro@zeniv.linux.org.uk To: linux-fsdevel@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Max Kellermann max.kellermann@ionos.com --- lib/iov_iter.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/lib/iov_iter.c b/lib/iov_iter.c index b0e0acdf96c1..6dd5330f7a99 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -414,6 +414,7 @@ static size_t copy_page_to_iter_pipe(struct page *page, size_t offset, size_t by return 0;

buf->ops = &page_cache_pipe_buf_ops; + buf->flags = 0; get_page(page); buf->page = page; buf->offset = offset; @@ -577,6 +578,7 @@ static size_t push_pipe(struct iov_iter *i, size_t size, 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);