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| author | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-11 15:42:12 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-12 08:21:31 +0200 |
| commit | 7a1c67d78094236e8ba0c5f6f83a8baf33a53860 (patch) | |
| tree | df1a5915f10e8a51d9ce893b1f5b97947b81417c /drivers/dma-buf | |
| parent | 0d17455ca85ecbc757bf7a2fefed6ca9cfae5054 (diff) | |
| download | linux-7a1c67d78094236e8ba0c5f6f83a8baf33a53860.tar.gz linux-7a1c67d78094236e8ba0c5f6f83a8baf33a53860.tar.bz2 linux-7a1c67d78094236e8ba0c5f6f83a8baf33a53860.zip | |
udmabuf: use EBADFD in case we didn't got a memfd
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-10-kraxel@redhat.com
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/udmabuf.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index a3d225fd4d90..e0465a9bf3f9 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -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; |