NekoCWD/libcamera
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libcamera: camera: Ensure queued requests are invalid

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Invalid, or not correctly reset requests can cause undefined behaviour
in the pipeline handlers due to unexpected request state.

If the status has not been reset to Request::RequestPending, it is
either not new, or has not been correctly procesed through
Request::reuse().

This can be caught early by validating the status of the request when it
is queued to a camera.

Reject invalid requests before processing them in the pipeline handlers.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Kieran Bingham 2023-01-30 18:02:43 +00:00
parent d9371444c4
commit e39f046f66
1 changed files with 5 additions and 0 deletions
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5
src/libcamera/camera.cpp
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@ -1126,6 +1126,11 @@ int Camera::queueRequest(Request *request)
return -EXDEV;
}
if (request->status() != Request::RequestPending) {
LOG(Camera, Error) << request->toString() << " is not valid";
return -EINVAL;
}
/*
* The camera state may change until the end of the function. No locking
* is however needed as PipelineHandler::queueRequest() will handle