This bug has been copied from bug #594086 and has been proposed to be backported to 4.8 z-stream (EUS).
A patch addressing this issue has been included in kernel-2.6.9-89.32.1.
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/RHSA-2010-0936.html
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: With multipath enabled, systems would occasionally halt when the do_cciss_request function was used. This was caused by wrongly-generated requests. Additional checks have been added to avoid the aforementioned issue.