Kernel Panic on Hyper-V Virtual Machine after switching from (unsupported) kmod modules to (supported) Hyper-V kernel modules shipped in RHEL 6.4.

Issue

• Switching from the ( ETES / Microsoft LIC ) (unsupported) kmod RPM packages to (supported) Hyper-V kernel module shipped in RHEL 6.4 fails during boot with below kernel panic.

kernel panic - not syncing: Attempted to kill init!
Pid: 1. comm: init Not tainted 2.6.32.358.0.1.el6.x86_64 #1
Call Trace:
  [<ffffffff814fd11a>] ? panic+0xa7/0x16f
  [<ffffffff81070db2>] ? do_exit+0862/0x870
  [<ffffffff8117ca75>] ? fput+0x25/0x30
  [<ffffffff81070c38>] ? do_group_exit+0x58/0x10
  [<ffffffff81070cc7>] ? sys_exit_group+0x17/0x20
  [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b
atkbd.c: Unknown Key pressed (translated set 2, code 0x00 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e000 <keycode>' to make it known

• Performed yum update and emptied /lib/modules/2.6.32-358.0.1.el6.x86_64/weak-updates (symlinks to old kmod RPM) and recreated the initramfs via following command:

# dracut --drivers "hv_netvsc hv_storvsc hv_utils hv_vmbus hid-hyperv" --force /boot/initramfs-2.6.32-358.0.1.el6.x86_64.img 2.6.32-358.0.1.el6.x86_64