On Wed, Dec 13, 2023 at 09:06:39AM -0800, Jeff Johnson wrote: > Currently struct wmi_host_mem_chunks defines: > struct host_memory_chunk items[1]; > > Per the guidance in [1] this should be a flexible array. However there > is a documented requirement: > some fw revisions require at least 1 chunk regardless of count > > To satisfy this requirement, follow the guidance from [2] and wrap the > array in a union which contains both the flexible array and a single > instance of the underlying struct. Since the footprint of the struct > is unchanged, no additional driver changes are required. > > No functional changes, compile tested only. > > [1] https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-arrays > [2] https://lore.kernel.org/linux-wireless/202308301529.AC90A9EF98@keescook/ > > Signed-off-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx> This looks like the right approach here. Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook
