Why is the sssd daemon throwing 'dereference processing failed : Input/output error' on Red Hat Enterprise Linux?

Solution Verified - Updated -


  • On a Red Hat Enterprise Linux 6 system configured as Active Directory client using sssd, sssd daemon is logging the following message in /var/log/messages :
sssd[be[AD.EXAMPLE.COM]]: dereference processing failed : Input/output error


  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • LDAP server (Active Directory server/ Red Hat Directory Server(RHDS) / OpenLDAP / SunOne Directory server)

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In