From: Hans Verkuil hverkuil-cisco@xs4all.nl
[ Upstream commit 1f65ea411cc7b6ff128d82a3493d7b5648054e6f ]
Whenever the compose width/height values change, the dev->bitmap_cap vmalloc'ed array must be freed and dev->bitmap_cap set to NULL.
This was done in some places, but not all. This is only an issue if overlay support is enabled and the bitmap clipping is used.
Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Fixes: ef834f7836ec ([media] vivid: add the video capture and output parts) Signed-off-by: Mauro Carvalho Chehab mchehab@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/vivid/vivid-vid-cap.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/media/platform/vivid/vivid-vid-cap.c b/drivers/media/platform/vivid/vivid-vid-cap.c index 182d8a2b3c98..459cff1626a6 100644 --- a/drivers/media/platform/vivid/vivid-vid-cap.c +++ b/drivers/media/platform/vivid/vivid-vid-cap.c @@ -458,6 +458,12 @@ void vivid_update_format_cap(struct vivid_dev *dev, bool keep_controls) tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap); dev->crop_cap = dev->src_rect; dev->crop_bounds_cap = dev->src_rect; + if (dev->bitmap_cap && + (dev->compose_cap.width != dev->crop_cap.width || + dev->compose_cap.height != dev->crop_cap.height)) { + vfree(dev->bitmap_cap); + dev->bitmap_cap = NULL; + } dev->compose_cap = dev->crop_cap; if (V4L2_FIELD_HAS_T_OR_B(dev->field_cap)) dev->compose_cap.height /= 2; @@ -886,6 +892,8 @@ int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection struct vivid_dev *dev = video_drvdata(file); struct v4l2_rect *crop = &dev->crop_cap; struct v4l2_rect *compose = &dev->compose_cap; + unsigned orig_compose_w = compose->width; + unsigned orig_compose_h = compose->height; unsigned factor = V4L2_FIELD_HAS_T_OR_B(dev->field_cap) ? 2 : 1; int ret;
@@ -1002,17 +1010,17 @@ int vivid_vid_cap_s_selection(struct file *file, void *fh, struct v4l2_selection s->r.height /= factor; } v4l2_rect_map_inside(&s->r, &dev->fmt_cap_rect); - if (dev->bitmap_cap && (compose->width != s->r.width || - compose->height != s->r.height)) { - vfree(dev->bitmap_cap); - dev->bitmap_cap = NULL; - } *compose = s->r; break; default: return -EINVAL; }
+ if (dev->bitmap_cap && (compose->width != orig_compose_w || + compose->height != orig_compose_h)) { + vfree(dev->bitmap_cap); + dev->bitmap_cap = NULL; + } tpg_s_crop_compose(&dev->tpg, crop, compose); return 0; }