The "channel" is added to the "dev->channels" but then if
v4l2_m2m_ctx_init() fails then we free "channel" but it's still on the
list so it could lead to a use after free. Let's not add it to the
list until after v4l2_m2m_ctx_init() succeeds.
Fixes:
cc62c74749a3 ("media: allegro: add missed checks in allegro_open()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
INIT_LIST_HEAD(&channel->buffers_reference);
INIT_LIST_HEAD(&channel->buffers_intermediate);
- list_add(&channel->list, &dev->channels);
-
channel->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, channel,
allegro_queue_init);
goto error;
}
+ list_add(&channel->list, &dev->channels);
file->private_data = &channel->fh;
v4l2_fh_add(&channel->fh);