Hi,

I've got an issue with OpenLDAP 2.4.28 on Ubuntu 12.04 where it unexpectedly shutdown due to a bad file descriptor. I wonder if anyone know what could be causing this problem or where I should be looking to figure it out. This seems to occur when the server is handling many simultaneous queries. Judging by the bugtracker there has been similar issues in earlier versions.

A few log entries: Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: slapd(23): setsockopt(SO_KEEPALIVE) failed errno=9 (Bad file descriptor) Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: slapd(23): setsockopt(TCP_NODELAY) failed errno=9 (Bad file descriptor) Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: daemon: epoll_ctl(ADD,fd=23) failed, errno=1, shutting down Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: daemon: abnormal condition, shutdown initiated. Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: conn=109877 fd=18 closed (slapd shutdown) Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: conn=109881 fd=20 closed (slapd shutdown) Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: conn=109879 fd=21 closed (slapd shutdown) Apr 13 15:03:14 sukat-test-ldapro02 slapd[30273]: conn=109880 fd=22 closed (slapd shutdown)

For a complete log: https://gist.github.com/2994c23ff506ffdaf21f