crash with host on Windows 7 and iSCSI to FreeBSD 11.1

[wonko1953]

Scenario:

• Windows 7 host, VirtualBox 5.1.28
• FreeBSD 11.1 client
• iSCSI disk going to FreeBSD 11.1 fileserver

Result:

• With enough disk activity, the client crashes. VBox.Log has the following last lines:

00:07:54.184158 PIIX3 IDE: guest issued command 0xca while controller busy
00:07:54.186337 
00:07:54.186338 !!Assertion Failed!!
00:07:54.186338 Expression: ReqType == ATA_AIO_RESET_ASSERTED || ReqType == ATA_AIO_RESET_CLEARED || ReqType == ATA_AIO_ABORT || pCtl->uAsyncIOState == ReqType
00:07:54.186339 Location  : F:\tinderbox\win-5.1\src\VBox\Devices\Storage\DevATA.cpp(5524) int __cdecl ataR3AsyncIOThread(struct RTTHREADINT *,void *)
00:07:54.186373 I/O state inconsistent: state=0 request=1
00:07:54.197491 PIIX3 IDE: guest issued command 0xca while controller busy
00:08:24.192298 PIIX3 ATA: Ctl#0: RESET, DevSel=0 AIOIf=0 CmdIf0=0xca (-1 usec ago) CmdIf1=0x00 (-1 usec ago)

• This is always reproducible

Note:

• When running the same client on a FreeBSD 11.1 host these crashes do not occur (VirtualBox compiled using FreeBSD port emulators/virtualbox-ose)

[wonko1953]

The issue really seems to stem from setting the number of emulated CPUs to 8, where the host CPU is a Core i7 6820HQ.

Setting the number of emulated CPUs to only 4 resolves the issue.

[aeichner]

Please attach the complete VBox.log of the affected VM.

[aeichner]

No response and no VBox.log, closing as obsolete.