On Fri, Mar 29, 2024 at 02:26:55PM +0800, Chenghai Huang wrote: > 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. I do not understand, why does the export type matter? Just fix any callers to use this properly and send proper parameters. What in-tree caller needs this? thanks, greg k-h