The uacce_alloc() is the member of the EXPORT_SYMBOL_GPL. Therefore, null pointer verification is added on the pointer type input parameter and its pointer members. Signed-off-by: Chenghai Huang <huangchenghai2@xxxxxxxxxx> --- drivers/misc/uacce/uacce.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c index bdc2e6fda782..964f1a6a16e0 100644 --- a/drivers/misc/uacce/uacce.c +++ b/drivers/misc/uacce/uacce.c @@ -514,6 +514,9 @@ struct uacce_device *uacce_alloc(struct device *parent, struct uacce_device *uacce; int ret; + if (!parent || !interface || !interface->ops) + return ERR_PTR(-EINVAL); + uacce = kzalloc(sizeof(struct uacce_device), GFP_KERNEL); if (!uacce) return ERR_PTR(-ENOMEM); -- 2.30.0
