[vpn-help] crash in vfilter.sys

[David Psurny]

Hi, I'm running windows 7 64bit and I just got a crash in vfilter.sys while using the 2.1.5 client.  It looks like KeSetEvent() was called with an invalid event object.  You can download the memory dump here: 
http://www.filefactory.com/file/b0f8b9h/n/MEMORY.zip 

Here is the stack trace:

4: kd> kn
 # Child-SP          RetAddr           Call Site
00 fffff880`07a4c098 fffff800`02acb469 nt!KeBugCheckEx
01 fffff880`07a4c0a0 fffff800`02aca0e0 nt!KiBugCheckDispatch+0x69
02 fffff880`07a4c1e0 fffff800`02ad00b6 nt!KiPageFault+0x260
03 fffff880`07a4c370 fffff880`02dd19a6 nt!KeSetEvent+0x226
04 fffff880`07a4c3e0 fffff880`02dd142b vfilter+0x29a6
05 fffff880`07a4c410 fffff880`02dd0ba0 vfilter+0x242b
06 fffff880`07a4c560 fffff880`02dd067c vfilter+0x1ba0
07 fffff880`07a4c5d0 fffff880`014fbaf4 vfilter+0x167c
08 fffff880`07a4c620 fffff880`02d94199 ndis!NdisFSendNetBufferLists+0x64
09 fffff880`07a4c660 fffff880`014fba39 pacer!PcFilterSendNetBufferLists+0x29
0a fffff880`07a4c760 fffff880`015b7785 ndis!ndisSendNBLToFilter+0x69
0b fffff880`07a4c7c0 fffff880`0166404e ndis!NdisSendNetBufferLists+0x85
0c fffff880`07a4c820 fffff880`01665767 tcpip!IppFragmentPackets+0x39e
0d fffff880`07a4c940 fffff880`016614d5 tcpip!IppDispatchSendPacketHelper+0x87
0e fffff880`07a4ca00 fffff880`01662e24 tcpip!IppPacketizeDatagrams+0x2d5
0f fffff880`07a4cb20 fffff880`01667a7e tcpip!IppSendDatagramsCommon+0x754
10 fffff880`07a4cdf0 fffff880`01716155 tcpip!IpNlpSendDatagrams+0x3e
11 fffff880`07a4ce30 fffff880`01697c3c tcpip!IppSlowSendDatagram+0x45
12 fffff880`07a4cf30 fffff880`016766f2 tcpip! ?? ::FNODOBFM::`string'+0x16ef0
13 fffff880`07a4d2c0 fffff880`0167489a tcpip!TcpTcbSend+0x4a2

David
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