Kdump is not working on Red Hat Enterprise Linux 5 systems with 1TB of memory or more

Issue

• The kdump utility in Red Hat Enterprise Linux 5 (RHEL 5) fails on systems with 1TB of memory or more.

Environment

• RHEL5

Root Cause

• The RHEL 5 kernel can address up to 40 bits (1 TB) of memory; any pages beyond that limit will be discarded. The /proc/vmcore entry will not list any memory above the 40-bit boundary due...