--On 9 September 2013 14:49:50 +0000 "Abhishek Gupta (LIS)" <abgu...@microsoft.com> wrote:

Hi Kari,

No this is not known. Does it give a stack trace and point to some
culprit functions? Please let me know.


Ok a 'bt' after the panic gives:

Tracing pid 0 tid 1000000 td 0xffffffff815dd9f0
kdb_enter() at kdb_enter+0x3e/frame 0xffffffff8192e7c0
vpanic() at vpanic+0x146/frame 0xffffffff8192e800
kassert_panic() at kassert_panic+0x136/frame 0xffffffff8192e870
witness_checkorder() at witness_checkorder+0x102/frame 0xffffffff8192e900
__mtx_lock_flags() at __mtx_lock_flags+0x96/frame 0xffffffff8192e940
uma_dbg_getslab() at uma_dgb_getslab+0x67/frame 0xffffffff8192e970
uma_dbg_free() at uma_dbg_free+0x33/frame 0xffffffff8192e990
uma_zfree_arg() at uma_zfree_arg+0x42/frame 0xffffffff8192e9f0
uma_zalloc_arg() at uma_zalloc_arg+0x14e/frame 0xffffffff8192ea60
malloc() at malloc+0x101/frame 0xffffffff8192eab0
hv_vmbus_synic_init() at hv_vmbus_synic_init+0x50/frame 0xffffffff8192eae0
smp_rendezvous_cpus() at smp_rendevous_cpus+0x187/frame 0xffffffff8192eb30
vmbus_bus_init() at vmbus_bus_init+0x1b6/frame 0xffffffff8192eb50
mi_startup() at mi_startup+0x118/frame 0xffffffff8192eb70
btext() at btext+0x2c

(The above was typed by hand - so sorry for any errors).

If you want another db commands running let me know - I'll leave this VM 'as is' for now.

The underlying host is a SuperMicro X9SCL(+)/X9SCM w/8Gb of RAM, and an Intel 1220Lv2 CPU - running Windows Server Hyper V 2012.

I checked out the hyperv source with SVN onto a FreeBSD 9.2-RC3 system, successfully ran 'make buildworld' and 'make buildkernel' - then installed the kernel. This is after the first reboot (i.e. beyond which you'd usually go to single user and do all the mergemaster/make installworld stuff).

The VM was created using 4 CPU's and given 2Gb of RAM and a 30Gb IDE hard drive (at controller 0, location 0).

If you need any more info or anything, please let me know,



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