Tested this scratch build recently(3 days) for TUI clean install/reinstall/and tui upgrade, I did not encounter the kernel panic issue, so I verified this bug on this scratch build currently.
ovirt-node-3.0.1-19.el6.24.noarch
rhev-hypervisor6-6.6-20141119.0.iso (4a9eb08c1c51fffc21a7091832d7462d)
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Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-0128.html