On Wed, Apr 20, 2022 at 09:50 AM -07, Andrii Nakryiko wrote: > bpf_attr is supposed to be zeroed out with memset(), so that hole > should have zero even before core_relo_cnt was added Thanks for clarifying. Didn't realize this was the contract. Thought it was worth adding to the bpf(2) man page: https://lore.kernel.org/linux-man/20220425160803.114851-1-jakub@xxxxxxxxxxxxxx/