Oracle VM: Guest Converted from PVM to HVM+PV Fails to Start (Doc ID 2345020.1)

Last updated on JUNE 19, 2020

Applies to:

Symptoms

OL6 Guest converted from PVM to HVM+PV crashes with the following dump

[ 1.603662] Warning: unable to open an initial console.
[ 1.607912] Freeing unused kernel memory: 1796K (ffffffff81bfe000 - ffffffff81dbf000)
[ 1.643406] dracut Warning: Signal caught!
[ 1.649050] dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line.
[ 1.649399] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100

[ 1.649407] CPU: 0 PID: 1 Comm: init Not tainted 4.1.12-61.1.28.el6uek.x86_64 #2
[ 1.649411] Hardware name: Xen HVM domU, BIOS 4.4.4OVM 08/14/2017
[ 1.649415] 0000000000000000 ffff88003e743d58 ffffffff816c6e40 ffffffff81988fc0
[ 1.649422] ffff88003e738000 ffff88003e743dd8 ffffffff816c6b9c ffff880000000010
[ 1.649427] ffff88003e743de8 ffff88003e743d88 ffffffff81105768 ffff88003e743db8
[ 1.649432] Call Trace:
[ 1.649444] [<ffffffff816c6e40>] dump_stack+0x63/0x83
[ 1.649450] [<ffffffff816c6b9c>] panic+0xc1/0x210
[ 1.649457] [<ffffffff81105768>] ? smp_call_function_single+0xc8/0x130
[ 1.649464] [<ffffffff81085833>] forget_original_parent+0x3b3/0x3c0
[ 1.649470] [<ffffffff8117ddd0>] ? perf_cgroup_switch+0x190/0x190
[ 1.649475] [<ffffffff81085d1d>] exit_notify+0x3d/0x1d0
[ 1.649480] [<ffffffff8108786f>] do_exit+0x22f/0x510
[ 1.649486] [<ffffffff812073ae>] ? ____fput+0xe/0x10
[ 1.649492] [<ffffffff810a264c>] ? task_work_run+0xbc/0x120
[ 1.649497] [<ffffffff81087ba6>] do_group_exit+0x56/0x100
[ 1.649502] [<ffffffff81087c67>] SyS_exit_group+0x17/0x20
[ 1.649508] [<ffffffff816cbb2e>] system_call_fastpath+0x12/0x71
[ 1.649613] Kernel Offset: disabled

Changes

 OL6 Guest which was working fine was converted to HVM+PV from PVM.

Cause

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