From 5a402af5e19f215689e8bf3cc244c21d94eba3c4 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Date: Wed, 13 Jan 2021 10:00:27 +0100
Subject: [PATCH] media: ti-vpe: cal: fix write to unallocated memory
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: 8fcb7576ad19 ("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>
---
drivers/media/platform/ti-vpe/cal.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index 293cbac905b30..5fb627811c6b0 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -607,7 +607,7 @@ 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;
};
@@ -694,7 +694,7 @@ 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);