media: vivid: s_fbuf: add more sanity checks
[ Upstream commit f8bcaf71 ] VIDIOC_S_FBUF is by definition a scary ioctl, which is why only root can use it. But at least check if the framebuffer parameters match that of one of the framebuffer created by vivid, and reject anything else. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: ef834f78 ([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>
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