4.20-stable review patch. If anyone has any objections, please let me know.
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From: Hans Verkuil hverkuil-cisco@xs4all.nl
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@xs4all.nl Reported-by: syzbot+0cc8e3cc63ca373722c6@syzkaller.appspotmail.com Cc: stable@vger.kernel.org # for v3.18 and up Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -449,6 +449,8 @@ 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;