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media: ti-vpe: cal: fix write to unallocated memory

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[ Upstream commit 5a402af5e1 ]

The asd allocated with v4l2_async_notifier_add_fwnode_subdev() must be
of size cal_v4l2_async_subdev, otherwise access to
cal_v4l2_async_subdev->phy will go to unallocated memory.

Fixes: 8fcb7576ad ("media: ti-vpe: cal: Allow multiple contexts per subdev notifier")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tomi Valkeinen 2021-01-13 10:00:27 +01:00 committed by Greg Kroah-Hartman
parent 640da89f3e
commit b1f4731f33
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/ti-vpe/cal.c
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@ -406,7 +406,7 @@ static irqreturn_t cal_irq(int irq_cal, void *data)
*/
struct cal_v4l2_async_subdev {
struct v4l2_async_subdev asd;
struct v4l2_async_subdev asd; /* Must be first */
struct cal_camerarx *phy;
};
@ -472,7 +472,7 @@ static int cal_async_notifier_register(struct cal_dev *cal)
fwnode = of_fwnode_handle(phy->sensor_node);
asd = v4l2_async_notifier_add_fwnode_subdev(&cal->notifier,
fwnode,
sizeof(*asd));
sizeof(*casd));
if (IS_ERR(asd)) {
phy_err(phy, "Failed to add subdev to notifier\n");
ret = PTR_ERR(asd);