what's current aio status for upcoming 11?

[Volodymyr Kostyrko]

Hi all.

FreeBSD limbo.b1t.name 11.0-PRERELEASE FreeBSD 11.0-PRERELEASE #5 
r304082: Sun Aug 14 19:03:18 EEST 2016 
arcade at limbo.b1t.name:/usr/obj/usr/src/sys/MIN  amd64

VBoxHeadless dumps core at signal 11:

(gdb) bt full
#0  0x0000000801d8200c in RTFileAioReqPrepareWrite (hReq=0x805e1b3c0, 
hFile=0x14, off=9701297152, pvBuf=0x84f573000, cbWrite=4096, 
pvUser=0x805e5aea0)
     at 
/tmp/ports/usr/ports/emulators/virtualbox-ose/work/VirtualBox-5.0.26/src/VBox/Runtime/r3/freebsd/fileaio-freebsd.cpp:227
No locals.
#1  0x00000008053dcc96 in pdmacFileAioMgrNormalReqCompleteRc 
(pAioMgr=0x80a84e3a0, hReq=0x805e1b3c0, rcReq=0, cbTransfered=<value 
optimized out>)
     at 
/tmp/ports/usr/ports/emulators/virtualbox-ose/work/VirtualBox-5.0.26/src/VBox/VMM/VMMR3/PDMAsyncCompletionFileNormal.cpp:1503
         offStart = <value optimized out>
         cbToTransfer = <value optimized out>
         pEndpoint = 0x806257aa0
         pTasksWaiting = <value optimized out>
         pTask = <value optimized out>
#2  0x00000008053dca8e in pdmacFileAioMgrNormalReqsEnqueue () at 
/tmp/ports/usr/ports/emulators/virtualbox-ose/work/VirtualBox-5.0.26/src/VBox/VMM/VMMR3/PDMAsyncCompletionFileNormal.cpp:615
         rcReq = 2
         pAioMgr = Cannot access memory at address 0x0
Current language:  auto; currently c++

I see aio is in MINIMAL kernel now yet I haven't requested it... Is it 
mandatory now? What I should do with VBox dumping core randomly?

Thanks in advance.

-- 
Sphinx of black quartz judge my vow.