Maintainers for corosync are Debian HA Maintainers <debian-ha-maintainers@lists.alioth.debian.org>.
You may want to refer to the following packages that are part of the same source: corosync-doc, corosync-notifyd, corosync-vqsim, libcfg-dev, libcfg7, libcmap-dev, libcmap4, libcorosync-common-dev, libcorosync-common4, libcpg-dev, libcpg4, libquorum-dev, libquorum5, libsam-dev, libsam4, libvotequorum-dev, libvotequorum8.
You might like to refer to the corosync package page, to the Package Tracking System, or to the source package src:corosync's bug page.
If you find a bug not listed here, please report it.