panic: mutex vr0 not owned at ...if_vr.c:571 when doing ifconfig

Hi,

with sources from earlier today, I get a panic when doing ifconfig (no
arguments):

panic
_mtx_assert
vr_setcfg
vr_miibus_statchg
miibus_statchg
mii_phy_update
ukphy_service
mii_pollstat
vr_ifmedia_sts
ifmedia_ioctl
ifhwioctl
ifioctl
soo_ioctl
ioctl
syscall(2f, 2f, 2f, bfbfe838, 3)

The exact message is:
panic: mutex vr0 not owned at /usr/src/sys/pci/if_vr.c:571
cpuid = 0;

I have a dump available, but currently no network access on this box. 

Regards,
Andreas

(PS: I also get the panic phk_at_ reported in
http://lists.freebsd.org/pipermail/freebsd-current/2004-August/033500.html:
when the linuxulator is loaded from rc. Dump available as well.)

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