The test_send_password_to_socket_EMSGSIZE function should not use a hard-coded constant to trigger an EMSGSIZE error from send().
* dracut-module/password-agent.c (send_password_to_socket): Only save errno from send() if it returned < 0. Show strerror(errno) if send() does return EMSGSIZE. Show number of bytes sent if send() sends less than all bytes. (test_send_password_to_socket_EMSGSIZE): Do not skip this test on non-AMD64 platforms. Try to find a suitable message size to trigger EMSGSIZE before testing send_password_to_socket(), and only skip this test if such a triggering message size is not found.
Reported-By: Simon McVittie <smcv@debian.org> Closes: #975457