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Crash dump anaylsis

June 30, 2015

Here is how to analyze a kernel crash dump in CentOs

First, to install vmlinux with debugging symbols

strings /var/crash/\:15\:01/vmcore | less

Look for the kernel version. In this case:


Go to and download
kernel-debuginfo-2.6.32-220.el6.x86_64.rpm  and

Install on target machine with

rpm -ivh kernel-debuginfo-common-x86_64-2.6.32-220.el6.x86_64.rpm
rpm -ivh kernel-debuginfo-2.6.32-220.el6.x86_64.rpm

Finally, the crash dump analysis:

  crash /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64/vmlinux ./vmcore

Use the “bt” command to pull up a backtrace. It will tell you what program was running and what happened to cause the crash.

From → Technology

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