ggml-org/llama.cpp b11600

on GitHub

graph: pad the KQ bias of the no-cache attention (#30446)

The no-cache attention pads K, V and the mask to 256, but T5 also adds
a relative position bias of [n_tokens, n_tokens], so the add with KQ
fails unless n_tokens divides the padded width. Pad the bias with
zeros up to the KV dimension of the mask, like K and V.