framebuffer_alloc() ignores its size argument and never sets info->par — silent API-contract divergence, latent NULL-deref for any caller passing size > 0

Summary

LinuxKPI shim kzallocs only sizeof(struct fb_info), ignoring size and never setting info->par - Linux allocates the tail and points par at it. Sole in-tree caller passes 0 and assigns par itself, so latent only; any future ported caller following the Linux contract gets an attach-time NULL deref. Honor-the-contract fix.