This bug has been copied from bug #597789 and has been proposed to be backported to 5.5 z-stream (EUS).
The RHEL 5.6 has been ported.
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: Adding and removing a path in quick succession could have caused it to be removed while the multipathd was still using it, which used to lead to a segmentation fault. This has been resolved, and multipathd no longer crashes when the path is added and quickly removed again.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2010-0532.html