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Subject: media: atmel-isi: Fix crash due to missing subdev in state
Author: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Date: Fri Dec 8 14:06:37 2023 +0200
As a result of converting to the stream-aware state functions, commit
bc0e8d91feec ("media: v4l: subdev: Switch to stream-aware state
functions") caused the sd pointer of the state passed to the
v4l2_subdev_state_get_crop() function to be dereferenced. It however
missed that the atmel-isi driver creates the v4l2_subdev_state instance
on the stack (which it shouldn't do, but that's a separate problem),
without initializing the sd field. This results in a null pointer
dereference.
Fix it by initializing the sd field.
Fixes: bc0e8d91feec ("media: v4l: subdev: Switch to stream-aware state
functions")
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/platform/atmel/atmel-isi.c | 1 +
1 file changed, 1 insertion(+)
---
diff --git a/drivers/media/platform/atmel/atmel-isi.c
b/drivers/media/platform/atmel/atmel-isi.c
index da58f33b6b0a..ed70c030858d 100644
--- a/drivers/media/platform/atmel/atmel-isi.c
+++ b/drivers/media/platform/atmel/atmel-isi.c
@@ -589,6 +589,7 @@ static int isi_try_fmt(struct atmel_isi *isi, struct
v4l2_format *f,
struct v4l2_pix_format *pixfmt = &f->fmt.pix;
struct v4l2_subdev_pad_config pad_cfg = {};
struct v4l2_subdev_state pad_state = {
+ .sd = isi->entity.subdev,
.pads = &pad_cfg,
};
struct v4l2_subdev_format format = {
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