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Commit 7a1c67d7 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

udmabuf: use EBADFD in case we didn't got a memfd 



Reported-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-10-kraxel@redhat.com
parent 0d17455c

drivers/dma-buf/udmabuf.c

+5 −2
Original line number Diff line number Diff line
@@ -154,14 +154,17 @@ static long udmabuf_create(const struct udmabuf_create_list *head, 


	pgbuf = 0;

	for (i = 0; i < head->count; i++) {

		ret = -EBADFD;

		memfd = fget(list[i].memfd);

		if (!memfd)

			goto err;

		if (!shmem_mapping(file_inode(memfd)->i_mapping))

			goto err;

		seals = memfd_fcntl(memfd, F_GET_SEALS, 0);

		if (seals == -EINVAL ||

		    (seals & SEALS_WANTED) != SEALS_WANTED ||

		if (seals == -EINVAL)

			goto err;

		ret = -EINVAL;

		if ((seals & SEALS_WANTED) != SEALS_WANTED ||

		    (seals & SEALS_DENIED) != 0)

			goto err;

		pgoff = list[i].offset >> PAGE_SHIFT;