----- "Anirudh Srinivasan" <srianirudh(a)gmail.com&gt; wrote: OK, so you're running -- and have crashed -- a RHEL3 i686 smp kernel, and the vmcore pinpoints the version as version 2.4.21-40.ELsmp. So you need to install the kernel-debuginfo-2.4.21-40.EL.i686.rpm (not the "i386" version), which contains the vmlinux debug files for that kernel version: $ rpm -qpl kernel-debuginfo-2.4.21-40.EL.i686.rpm | grep vmlinux /usr/lib/debug/boot/vmlinux-2.4.21-40.EL.debug /usr/lib/debug/boot/vmlinux-2.4.21-40.ELhugemem.debug /usr/lib/debug/boot/vmlinux-2.4.21-40.ELsmp.debug $ And the relevant file in your case would be located in /usr/lib/debug/boot/vmlinux-2.4.21-40.ELsmp.debug. That's fine -- one way you can get the specific debuginfo package you need is by going to my people page: http://people.redhat.com/anderson 1. Click on the "Red Hat Enterprise Linux debuginfo RPMs" link. 2. On that next page, in the "Red Hat Enterprise Linux 3" box, click on the "AS: i386" link. That will bring you to the ftp site that contains *all* RHEL3 packages, so you have to search for: kernel-debuginfo-2.4.21-40.EL.i686.rpm Again, make sure you get the "i686" version. Hope this helps, Dave