Host crashed after a processor offline

[mzprx]

I'm running VirtualBox 4.3.2 on this host:

• OS: OpenIndiana 151a8
• CPU: Intel Xeon E3-1240 V2

I had one virtual machine guest running.

Once I ran psradm -f 1 on the host to offline one CPU the machine panicked with this info:

> ::status
debugging crash dump vmcore.0 (64-bit) from raven
operating system: 5.11 oi_151a8 (i86pc)
image uuid: bce29343-bd66-4abc-9670-96f69cb1d15c
panic message: BAD TRAP: type=6 (#ud Invalid opcode) rp=ffffff001f36aab0 addr=1
dump content: kernel pages only
> ::stack
0xfffffffff822afa4()
0xfffffffff822aae6()
0xfffffffff823d6bb()
supdrvIOCtlFast+0x8c()
VBoxDrvSolarisIOCtl+0x109()
cdev_ioctl+0x45(10e00000002, 200056c1, 1, 202003, ffffff04e462a468, ffffff001f36ae24)
spec_ioctl+0x5a(ffffff04e65e5700, 200056c1, 1, 202003, ffffff04e462a468, ffffff001f36ae24)
fop_ioctl+0x7b(ffffff04e65e5700, 200056c1, 1, 202003, ffffff04e462a468, ffffff001f36ae24)
ioctl+0x18e(12, 200056c1, 1)
sys_syscall+0x17a()
> ::cpuinfo
 ID ADDR             FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD           PROC
  0 fffffffffbc30640  1f    0    0  -1   no    no t-0    ffffff001e005c40 (idle)
  1 ffffff04d865e080  2f    0    0  -1   no    no t-10   ffffff001e364c40 (idle)
  2 ffffff04d8642a80  1f    0    0  59   no    no t-0    ffffff04db148ae0 VBoxHeadless
  3 ffffff04d8ac8540  1f    0    0  -1   no    no t-0    ffffff001e4a2c40 (idle)
  4 ffffff04d8ac7040  1f    0    0  -1   no    no t-0    ffffff001e852c40 (idle)
  5 ffffff04d8ac5080  1f    0    0  -1   no    no t-4    ffffff001e454c40 (idle)
  6 fffffffffbc3ae50  1b    0    0  59   no    no t-0    ffffff04da579bc0 VBoxHeadless
  7 ffffff04d8aba540  1f    1    0  -1   no    no t-9    ffffff001e97bc40 (idle)
>

I'll provide the crash dump file on request.

[Ramshankar Venkataraman]

Could you please attach VBox.log for the VM when the crash happened.