[vbox-dev] vhd format not stable?
Alexander Eichner
Alexander.Eichner at Sun.COM
Mon Jun 15 19:46:45 GMT 2009
Hmm same offset again.
Is it possible to get the image somehow and instructions what you did to
reproduce it?
Regards,
Alexander Eichner
Am Montag, den 15.06.2009, 12:41 -0700 schrieb huisinro at yahoo.com:
> Alex,
>
> After longer testing, the crash still occured, same values for those
> params from the debugger.
>
> vmlitediskmp!vhdRead(void * pBackendData = 0x86f80350, unsigned int64
> uOffset = 0xf`df9fce00, void * pvBuf = 0xd06a6000, unsigned int cbRead
> = 0x1000, unsigned int * pcbActuallyRead = 0x8e22299c)+0x292 (FPO:
> [Non-Fpo]) (CONV: cdecl)
>
>
>
> --- On Mon, 6/15/09, Alexander Eichner <Alexander.Eichner at Sun.COM>
> wrote:
>
>
> From: Alexander Eichner <Alexander.Eichner at Sun.COM>
> Subject: Re: [vbox-dev] vhd format not stable?
> To: "Huihong Luo" <huisinro at yahoo.com>
> Cc: vbox-dev at virtualbox.org
> Date: Monday, June 15, 2009, 12:05 PM
>
> Great I will commit the fix if your tests are successful.
>
> The fix for the other crash you reported is already committed
> and
> visible in the public svn.
>
> Regards,
> Alexander Eichner
>
> Am Montag, den 15.06.2009, 11:55 -0700 schrieb Huihong Luo:
> > Alex,
> >
> > Thanks for your immediate response and fixes. I am running
> the tests
> > now, so far so good.
> >
> > By the way, does the latest svn contain the fix to the bug
> (crash on
> > vhd snapshot discarding) I reported a few days ago?
> >
> > - Huihong
> >
> > --- On Mon, 6/15/09, Alexander Eichner
> <Alexander.Eichner at Sun.COM>
> > wrote:
> >
> >
> > From: Alexander Eichner <Alexander.Eichner at Sun.COM>
> > Subject: Re: [vbox-dev] vhd format not stable?
> > To: "Huihong Luo" <huisinro at yahoo.com>
> > Cc: vbox-dev at virtualbox.org
> > Date: Monday, June 15, 2009, 11:09 AM
> >
> > Hi Huihong,
> >
> > I attached a patch which I think fixes the crash.
> > If it is possible please apply it and verify that
> this fixes
> > the crash.
> > Thanks a lot!
> >
> > Kind regards,
> > Alexander Eichner
> >
> > Am Donnerstag, den 11.06.2009, 08:05 -0700 schrieb
> Huihong
> > Luo:
> > > Alex,
> > >
> > > No problem, and thanks for the quick fix.
> > >
> > > There might be more bugs, I will keep testing.
> > >
> > > Some times, the error occurs some other places, an
> error
> > message
> > > something like "there are 5993 child disks", the
> number is
> > kind of
> > > random. When this error occurs, the whole disk
> become
> > inaccessible,
> > > and I have to recreate the whole vm.
> > >
> > > Huihong
> > >
> > > --- On Thu, 6/11/09, Alexander Eichner
> > <Alexander.Eichner at Sun.COM>
> > > wrote:
> > >
> > >
> > > From: Alexander Eichner
> <Alexander.Eichner at Sun.COM>
> > > Subject: Re: [vbox-dev] vhd format not
> stable?
> > > To: vbox-dev at virtualbox.org
> > > Date: Thursday, June 11, 2009, 1:52 AM
> > >
> > > Hi Huihong,
> > >
> > > thanks for the report. This bug is fixed
> now and
> > should appear
> > > soon in
> > > the public svn.
> > >
> > > Kind regards,
> > > Alexander Eichner
> > >
> > > Am Donnerstag, den 11.06.2009, 09:55 +0200
> schrieb
> > Frank
> > > Mehnert:
> > > > Actually the .vhd format is less tested
> than
> > the .vdi
> > > format. Which
> > > > VBox version are you using?
> > > >
> > > > On Thursday 11 June 2009, Huihong Luo
> wrote:
> > > > > It seems VHD format is not stable as
> VDI.
> > VBoxSVC.exe
> > > pretty much always
> > > > > crashes when a snapshot is being
> discarded. I am
> > running
> > > an XP guest on
> > > > > Vista host. The VHD's capacity is over
> 100G.
> > > > > If you look at the following stack,
> the crash
> > was caused
> > > by
> > > > > pImage->pszParentFilename is NULL
> inside
> > > > > static int
> vhdDynamicHeaderUpdate(PVHDIMAGE
> > pImage) in
> > > VHDHDDCore.cpp
> > > > >
> > > > > I used the very recent SVN source.
> > > > >
> > > > > //////////
> > > > > vboxsvc.exe crash stack:
> > > > >
> > > > > VBoxRT.dll!RTPathFilename(const char *
> > pszPath=0x00000000)
> > > Line 240 C++
> > > > > VBoxDDU.dll!
> vhdDynamicHeaderUpdate(VHDIMAGE *
> > > pImage=0x00000000) Line
> > > > > 362 + 0x12 bytes C++ VBoxDDU.dll!
> vhdFlush(void *
> > > pBackendData=0x01c2caf0)
> > > > > Line 1157 C++ VBoxDDU.dll!
> vhdClose(void *
> > > pBackendData=0x01c2caf0, bool
> > > > > fDelete=false) Line 880 + 0x6 bytes C
> ++
> > VBoxDDU.dll!
> > > VDClose(VBOXHDD *
> > > > > pDisk=0x01e0e218, bool fDelete=false)
> Line 2268
> > C++
> > > > > VBoxSVC.exe!
> HardDisk::taskThread(RTTHREADINT *
> > > thread=0x00000000, void *
> > > > > pvUser=0x00e0e2b8) Line 4063 + 0xb
> bytes C++
> > > > > VBoxSVC.exe!HardDisk::Task::runNow()
> Line 220 C
> > ++
> > > > > VBoxSVC.exe!
> > HardDisk::mergeTo(HardDisk::MergeChain *
> > > aChain=0x01c2cfe0,
> > > > > ComObjPtr<Progress,ComStrongRef> *
> > aProgress=0x01e06fe8,
> > > bool aWait=true)
> > > > > Line 2844 + 0x9 bytes C++
> > > > > VBoxSVC.exe!
> > >
> HardDisk::discard(ComObjPtr<Progress,ComStrongRef> &
> > > > > aProgress={...}, HardDisk::MergeChain
> *
> > aChain=0x01c2cfe0)
> > > Line 2248 + 0xe
> > > > > bytes C++
> > > > > VBoxSVC.exe!
> > >
> >
> SessionMachine::discardSnapshotHandler(SessionMachine::DiscardS
> > > > >napshotTask & aTask={...}) Line 10584
> C++
> > > > > VBoxSVC.exe!
> > SessionMachine::DiscardSnapshotTask::handler()
> > > Line 8251 + 0x9
> > > > > bytes C++ VBoxSVC.exe!
> > > SessionMachine::taskHandler(RTTHREADINT *
> > > > > __formal=0x01c32108, void *
> pvUser=0x01e06fe0)
> > Line 11412
> > > C++
> > > > > VBoxRT.dll!rtThreadMain(RTTHREADINT *
> > pThread=0x01c32108,
> > > unsigned int
> > > > > NativeThread=4312, const char *
> > pszThreadName=0x01c32170)
> > > Line 635 + 0xa
> > > > > bytes C++ VBoxRT.dll!
> rtThreadNativeMain(void *
> > > pvArgs=0x01c32108) Line 106
> > > > > + 0xb bytes C++ msvcr80.dll!
> __endthreadex() +
> > 0x3b bytes
> > > > > msvcr80.dll!__endthreadex() + 0xc7
> bytes
> > > > > kernel32.dll!
> @BaseThreadInitThunk at 12() + 0x12
> > bytes
> > > > > ntdll.dll!___RtlUserThreadStart at 8()
> + 0x27
> > bytes
> > > > > ntdll.dll!__RtlUserThreadStart at 8()
> + 0x1b
> > bytes
> > > >
> > > >
> > > >
> > > >
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