10.0 RC5 panic after a clean buildworld on Hyper-V

[Michael]

Jean-Luc Dupont <jl.dupont <at> outlook.com> writes:
> I installed 10.0 RC5 on a new virtual machine running on Hyper-V.
> I svn checkout /base/stable/10
> cpuid = 0
> KDB: stack backtrace:
> #0 0xffffffff808d1670 at kdb_backtrace+0x60
> #1 0xffffffff80899045 at panic+0x155
> #2 0xffffffff80c73672 at trap_fatal+0x3a2
> #3 0xffffffff80c73949 at trap_pfault+0x2c9
> #4 0xffffffff80c730d6 at trap+0x5e6
> #5 0xffffffff80c5a462 at calltrap+0x8
> #6 0xffffffff80885ff0 at __mtx_unlock_sleep+0x60
> #7 0xffffffff80885b4a at unlock_mtx+0x2a
> #8 0xffffffff808a1c4e at _sleep+0x18e
> #9 0xffffffff802dc2be at cam_periph_runccb+0x9e
> #10 0xffffffff80cfe6f4 at storvsc_attach+0x6d4
> #11 0xffffffff808c89e2 at device_attach+0x3a2
> #12 0xffffffff80d0311b at hv_vmbus_child_deuice_register+0xdb
> #13 0xffffffff80d01a33 at vmbus_channel_process_offer+0x133
> #14 0xffffffff80d01576 at work_item_callback+0x26
> #15 0xffffffff808df406 at taskqueue_run_locked+0xe6
> #16 0xffffffff808dfc88 at taskqueue_thread_loop+0xa8
> #17 0xffffffff8086b11a at fork_exit+0x9a

Nothing has changed. Windows 2008 R2 Hyper-V :
FreeBSD-10.0-STABLE-amd64-20140203-r261419.vhd
FreeBSD-11.0-CURRENT-amd64-20140203-r261419.vhd
all i386-arch
  - the same panic / do not want to be booting and it's *-stable-10.iso and 
*-current-11.iso - the same panic+0x155 after >storvsc0 on vmbus0 /

But FreeBSD-10.0-RELEASE-amd64-disc1.iso :
git clone git://github.com/freebsd/freebsd.git --progress -v --single-
branch -b releng/10.0 /usr/src ;
make buildworld && make buildkernel KERNCONF=GENERIC+my_conf && make 
installkernel KERNCONF=GENERIC+my_conf && make installworld
mergemaster -Ui
  - work perfect / No problem /