On Mon, Feb 12, 2024 at 11:04:36AM -0500, Kevan Rehm wrote: > Those routines call ibv_dontfork_range on the page after it’s been > allocated via posix_memalign(). _add_page() then adds the new page > to the mlx5_context field dbr_available_pages. Oh, if this is your trouble then upgrade your kernel. This part is fixed on kernels that have working fork support. Jason