Win98 installlation crashes VirtualBox

[alehandro]

VirtualBox got crashed during Windows98 installation (yes, VT-X was ON) logs attached

[alehandro]

I believe that VBox.log.1 is a previous log file when Windows98 installer asked to reboot and all was fine VBox.log - latest log when after reboot VirtualBox crashed

[alehandro]

and here is the info from crash (under Win7 Ultimate)

Problem signature:

Problem Event Name: APPCRASH Application Name: VirtualBox.exe Application Version: 3.1.6.0 Application Timestamp: 4babb120 Fault Module Name: VBoxDD.DLL Fault Module Version: 0.0.0.0 Fault Module Timestamp: 4babb144 Exception Code: c0000094 Exception Offset: 00000000000564a6 OS Version: 6.1.7600.2.0.0.256.1 Locale ID: 1033 Additional Information 1: 0309 Additional Information 2: 0309522899dc5f08e44bd904dd003cd7 Additional Information 3: ab8c Additional Information 4: ab8c7bfceb4bfe9803ddda8d3d4b385c

Read our privacy statement online:

 http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

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C:\Windows\system32\en-US\erofflps.txt

---

Problem signature:

Problem Event Name: APPCRASH Application Name: VirtualBox.exe Application Version: 3.1.6.0 Application Timestamp: 4babb120 Fault Module Name: VBoxDD.DLL Fault Module Version: 0.0.0.0 Fault Module Timestamp: 4babb144 Exception Code: c0000094 Exception Offset: 00000000000564a6 OS Version: 6.1.7600.2.0.0.256.1 Locale ID: 1033 Additional Information 1: 0309 Additional Information 2: 0309522899dc5f08e44bd904dd003cd7 Additional Information 3: ab8c Additional Information 4: ab8c7bfceb4bfe9803ddda8d3d4b385c

Read our privacy statement online:

 http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:

C:\Windows\system32\en-US\erofflps.txt

[mhanor]

I can always reproduce this crash with VB 3.1.6 and 3.2.0 beta2 (host XP SP3), with VT-x,NX,LAN,audio all disabled. USB also disabled in VM settings (USB support is not even installed, I don't need it), 64 or 265MB RAM, 4 or 32MB VRAM
It always crashes with exception c0000094 (divide by zero), @VBoxDD!VBoxUsbRegister+offset, at the first run of the OS, after the Win98 setup restars from hw detection.

[mhanor]

3.1.6 and 3.2.0 VB crash dumps and logs (host xp sp3)

[mhanor]

Sorry, it wasn't the first run of the OS, it's the last run of the setup (where you set up the time zone)... By messing around with the registers of several div instructions, I managed to get the setup to continue (this time with VT-x enabled)... Of course, it does that every time it boots, unless you disable some things

[Technologov]

Duplicate of #2865

-Technologov

[mhanor]

this is not a duplicate... it triggers c0000094 (divide by zero), it doesn't matter if VT-x is enabled or disabled

[jtr1888]

Crash during install (host win7 ultimate x64 - guest win 98 SE)

[frank]

jtr18888, your crash might be fixed by the upcoming release 3.2.10.

[frank]

Please reopen if still relevant with VBox 3.2.10.

[mhanor]

if the OS is already installed, VB 3.2.10 crashes in the same manner (division by zero inside VBoxDD), while the guest OS starts, with or without VT-x

with VT-x enabled, the Win98 setup fails shortly after starting the setup GUI for the first time, with the message "Standard mode: fault outside of MS-DOS extender"

[frank]

Please attach a VBox.log file.

[mhanor]

I found out where it crashes with divide by zero (VT-x disabled),
\vbox\src\VBox\Devices\Storage\DevATA.cpp, line 1425, CHS "else" branch

cyl = iLBA / (s->PCHSGeometry.cHeads * s->PCHSGeometry.cSectors);

SVN 35302, 32 bit, non-debug build

[mhanor]

I forgot the stack backtrace

VBoxDD!ataSetSector+0xae  vbox\src\vbox\devices\storage\devata.cpp @ 1425 
VBoxDD!ataReadSectorsSS+0x49  vbox\src\vbox\devices\storage\devata.cpp @ 1583 
VBoxDD!ataAsyncIOLoop+0x307  vbox\src\vbox\devices\storage\devata.cpp @ 4751 
VBoxRT!rtThreadMain+0x33  vbox\src\vbox\runtime\common\misc\thread.cpp @ 680 
VBoxRT!rtThreadNativeMain+0x68  vbox\src\vbox\runtime\r3\win\thread-win.cpp @ 109 
MSVCR100!_callthreadstartex+0x1b  dd\vctools\crt_bld\self_x86\crt\src\threadex.c @ 314 
MSVCR100!_threadstartex+0x64  dd\vctools\crt_bld\self_x86\crt\src\threadex.c @ 292 
kernel32!BaseThreadStart+0x37

[mhanor]

The ATADevState structure passed to the ataSetSector function, indicates that it crashes when the function is working with the virtual "VBOX CD-ROM", indicated by szModelNumber and szInquiryProductId. The PCHSGeometry (part of ATADevState) structure's members are all set to zero.

[mhanor]

After removing the virtual CD-ROM from VM settings, the Win98 setup is able to continue without crashing the VM.

[frank]

Thanks for the additional information, we will investigate!

[klaus]

I'm wondering what makes Win98 think a CD-ROM will support hard disk read commands. Either VirtualBox reports something incorrectly (unlikely, as I haven't heard of such a problem in years), or Win98 is buggy and issues such commands to the wrong drive.

The command parsing in VirtualBox is a bit too simple, it prevents most hard disk commands but not the read/write ones.

As you built VirtualBox yourself you could try replacing "if (!s->pDrvBlock)" with "if (!s->pDrvBlock || s->fATAPI)" in line 3655 in src/VBox/Devices/Storage/DevATA.cpp. If this works around the problem let us know. There are more places to fix, but the information alone would be rather interesting and you have the testcase at hand.

[mhanor]

With that modification, it doesn't crash. The VM is able to start and finish the Win98 installation process, without any other problems.

[mhanor]

Btw, it always crashed at the same point, during Win98 setup hardware detection. Maybe it's probing the optical device in an unusual manner.

[frank]

The crash should be fixed in VBox 4.0.2.