Hi Huihong,
this is a known problem. The list is corrupted for some reason but I
don't know where it gets corrupted yet.
I'm working on it.
Regards,
Alexander Eichner
Am 05.11.2009 um 21:03 schrieb Huihong Luo:
this doesn't happen often, just FYI
static PPDMASYNCCOMPLETIONTASK
pdmR3AsyncCompletionGetTask(PPDMASYNCCOMPLETIONENDPOINT pEndpoint,
void *pvUser)
{
else
{
/* Grab a free task from the head. */
AssertMsg(pEndpoint->cTasksCached > 0, ("No tasks cached but list
contain more than one element\n"));
pTask = pEndpoint->pTasksFreeHead;
pEndpoint->pTasksFreeHead = pTask->pNext; <==== CRASH HERE
ASMAtomicDecU32(&pEndpoint->cTasksCached);
}
}
> VBoxVMM.dll!pdmR3AsyncCompletionGetTask(PDMASYNCCOMPLETIONENDPOINT
* pEndpoint=0x020442d0, void * pvUser=0x00000000) Line 824 + 0x5
bytes C++
VBoxVMM.dll!PDMR3AsyncCompletionEpRead(PDMASYNCCOMPLETIONENDPOINT
* pEndpoint=0x020442d0, __int64 off=845623296, const PDMDATASEG *
paSegments=0x06f7fd98, unsigned int cSegments=1, unsigned int
cbRead=512, void * pvUser=0x00000000, PDMASYNCCOMPLETIONTASK * *
ppTask=0x06f7fdac) Line 1076 + 0xa bytes C++
VBoxDD.dll!drvvdAsyncIOReadSync(void * pvUser=0x059c0ea8, void *
pStorage=0x030974a0, unsigned __int64 uOffset=845623296, unsigned
int cbRead=512, void * pvBuf=0x03162b18, unsigned int *
pcbRead=0x00000000) Line 321 + 0x28 bytes C++
VBoxDDU.dll!vhdFileReadSync(VHDIMAGE * pImage=0x00000000, unsigned
__int64 off=845623296, void * pvBuf=0x03162b18, unsigned int
cbRead=512, unsigned int * pcbRead=0x00000000) Line 350 + 0x25
bytes C++
VBoxDDU.dll!vhdRead(void * pBackendData=0x03162840, unsigned
__int64 uOffset=846021632, void * pvBuf=0x05930000, unsigned int
cbRead=1651608, unsigned int * pcbActuallyRead=0x06f7fe1c) Line
1159 + 0x2c bytes C++
VBoxDDU.dll!vdReadHelper(VBOXHDD * pDisk=0x06f7fe44, VDIMAGE *
pImage=0x030a28b0, unsigned __int64 uOffset=68732457472, void *
pvBuf=0x00000000, unsigned int cbRead=512) Line 322 + 0x17 bytes C++
VBoxDDU.dll!VDRead(VBOXHDD * pDisk=0x030034f0, unsigned __int64
uOffset=68732457472, void * pvBuf=0x05930000, unsigned int
cbRead=512) Line 2653 + 0xc bytes C++
VBoxDD.dll!drvvdRead(PDMIMEDIA * pInterface=0x059c0eac, unsigned
__int64 off=68732457472, void * pvBuf=0x05930000, unsigned int
cbRead=512) Line 608 + 0x1d bytes C++
VBoxDD.dll!drvblockRead(PDMIBLOCK * pInterface=0x020ea654,
unsigned __int64 off=68732457472, void * pvBuf=0x05930000, unsigned
int cbRead=512) Line 140 + 0x18 bytes C++
VBoxDD.dll!ataReadSectors(ATADevState * s=0x00000000, unsigned
__int64 u64Sector=134243081, void * pvBuf=0x05930000, unsigned int
cSectors=1, bool * fRedo=0x06f7fee3) Line 1475 C++
VBoxDD.dll!ataReadSectorsSS(ATADevState * s=0x04411d00) Line 1549
+ 0x18 bytes C++
VBoxDD.dll!ataAsyncIOLoop(RTTHREADINT * ThreadSelf=0x0204c138,
void * pvUser=0x00000002) Line 4872 + 0xd bytes C++
VBoxRT.dll!rtThreadMain(RTTHREADINT * pThread=0x0204c138, unsigned
int NativeThread=252, const char * pszThreadName=0x0204c1a0) Line
637 + 0xa bytes C++
VBoxRT.dll!rtThreadNativeMain(void * pvArgs=0x0204c138) Line 106
+ 0xb bytes C++
msvcr80.dll!_callthreadstartex() Line 348 + 0x6 bytes C
msvcr80.dll!_threadstartex(void * ptd=0x031555b8) Line 326 + 0x5
bytes C
kernel32.d...@basethreadinitthunk@12() + 0x12 bytes
ntdll.dll!___rtluserthreadst...@8() + 0x27 bytes
ntdll.dll!__rtluserthreadst...@8() + 0x1b bytes
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