This reported from cert#786268 kdump test output(https://hardware.redhat.com/results.cgi?cert_id=786268&id=250597) shows: <snip> reboot took 00:30:00 method: panic kernel: 2.6.32-220.el6.x86_64 Apr 25 13:56:56 localhost kernel: Linux version 2.6.32-220.el6.x86_64 (mockbuild.bos.redhat.com) (gcc version 4.4.5 20110214 (Red Hat 4.4.5-6) (GCC) ) #1 SMP Wed Nov 9 08:03:13 EST 2011 Apr 25 14:20:13 localhost kernel: Linux version 2.6.32-220.el6.x86_64 (mockbuild.bos.redhat.com) (gcc version 4.4.5 20110214 (Red Hat 4.4.5-6) (GCC) ) #1 SMP Wed Nov 9 08:03:13 EST 2011 Error: system rebooted 2 times Looking for vmcore image directories under /var/crash Error: could not locate vmcore file <snip> From serial console log, there is no sign that crash was triggered. https://hardware.redhat.com/attachment.cgi?id=580544