Bhyve: panic: "Unregistered use of FPU in kernel" when starting guest

[Neel Natu]

Hi svas,

I just submitted a fix for this:
http://svnweb.freebsd.org/base?view=revision&revision=242122

Please let me know if this fixes the panic you reported.

best
Neel

On Sun, Oct 7, 2012 at 11:12 AM, sree.openwrk <sree.openwrk at gmail.com> wrote:
> Hey Neel
> Sure. I will reproduce the issue and try to narrow down the problem.
> Will update you, if I am able to narrow down the problem.
>
> Thanks
>
>
> On Thu, Oct 4, 2012 at 9:07 PM, Neel Natu <neelnatu at gmail.com> wrote:
>>
>> Hi svas,
>>
>> On Thu, Oct 4, 2012 at 5:58 PM, sree.openwrk <sree.openwrk at gmail.com>
>> wrote:
>> > Hi
>> > I am seeing frequent kernel panic when I try to run the guest OS. I have
>> > the
>> > latest Freebsd (I compiled the latest code from
>> > svn://svn.freebsd.org/base/projects/bhyve and installed it in my
>> > machine).
>> > While trying to run the pre-built guest provided at
>> > http://people.freebsd.org/~neel/bhyve/vm1.tar.gz I get the kernel panic
>> > (panic: Unregistered use of FPU in kernel)
>> > I am attaching the core.txt.
>> > I also want to mention that I was successfully able to boot in to the
>> > guest
>> > OS couple of times. But around 7/10 times I get thsi host kernel panic.
>> >
>> > stack trace:
>> > vm_run() at vm_run+0xec
>> > vmmdev_ioctl() at vmmdev_ioctl+0x4ea
>> > devfs_ioctl_f() at devfs_ioctl_f+0x7a
>> > kern_ioctl() at kern_ioctl+0xcd
>> > sys_ioctl() at sys_ioctl+0xfd
>> > amd64_syscall() at amd64_syscall+0x304
>> > Xfast_syscall() at Xfast_syscall+0xf7
>> >
>>
>> I am seeing this too but nowhere as frequently as you are. I hit this
>> last night for the first time and not since.
>>
>> There hasn't been any change in this part of the code for quite some time
>> now.
>>
>> Since you can trigger this much more frequently that me, would it be
>> possible for you to narrow down which change caused this? It would be
>> hugely helpful.
>>
>> best
>> Neel
>>
>> >
>> > regards
>> > svas
>> >
>> >
>
>