[PATCH 4.19 146/170] media: vivid: free bitmap_cap when updating std/timings/etc.

From: Greg Kroah-Hartman
Date: Mon Jan 07 2019 - 07:59:39 EST


4.19-stable review patch. If anyone has any objections, please let me know.

------------------

From: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>

commit 560ccb75c2caa6b1039dec1a53cd2ef526f5bf03 upstream.

When vivid_update_format_cap() is called it should free any overlay
bitmap since the compose size will change.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Reported-by: syzbot+0cc8e3cc63ca373722c6@xxxxxxxxxxxxxxxxxxxxxxxxx
Cc: <stable@xxxxxxxxxxxxxxx> # for v3.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/media/platform/vivid/vivid-vid-cap.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/media/platform/vivid/vivid-vid-cap.c
+++ b/drivers/media/platform/vivid/vivid-vid-cap.c
@@ -438,6 +438,8 @@ void vivid_update_format_cap(struct vivi
tpg_s_rgb_range(&dev->tpg, v4l2_ctrl_g_ctrl(dev->rgb_range_cap));
break;
}
+ vfree(dev->bitmap_cap);
+ dev->bitmap_cap = NULL;
vivid_update_quality(dev);
tpg_reset_source(&dev->tpg, dev->src_rect.width, dev->src_rect.height, dev->field_cap);
dev->crop_cap = dev->src_rect;