Hello,<div><br></div><div>I'd like to start by thanking you for your awesome VPN client. I experienced two BSODs today while not connected to the VPN, but loading them in windbg shows they are occurring in vfilter.sys (see output pasted below). From browsing through the list archives it seems this has been reported before, so I guess the purpose of this e-mail is just to confirm that this is happening on Windows 7 Professional 64bit in 2.1.5rc4, and to see if there is an expected ETA for when a fix will be available. I've had the client installed for a number of weeks so it's odd that it happened twice today for the first time, but it would be really inconvenient for this to start happening often, and uninstalling the VPN is not an option at the moment!</div>
<div><br></div><div><div>Windows 7 Kernel Version 7600 MP (8 procs) Free x64</div><div>Product: WinNt, suite: TerminalServer SingleUserTS</div><div>Built by: 7600.16385.amd64fre.win7_rtm.090713-1255</div><div>Machine Name:</div>
<div>Kernel base = 0xfffff800`02802000 PsLoadedModuleList = 0xfffff800`02a3fe50</div><div>Debug session time: Fri Nov 27 10:41:48.596 2009 (GMT-5)</div><div>System Uptime: 4 days 0:33:51.626</div><div>Loading Kernel Symbols</div>
<div>...............................................................</div><div>................................................................</div><div>........................</div><div>Loading User Symbols</div><div>Loading unloaded module list</div>
<div>........................</div><div>*******************************************************************************</div><div>* *</div><div>* Bugcheck Analysis *</div>
<div>* *</div><div>*******************************************************************************</div><div><br></div><div>Use !analyze -v to get detailed debugging information.</div>
<div><br></div><div>BugCheck A, {0, 2, 0, fffff800028780b6}</div><div><br></div><div>Unable to load image \SystemRoot\system32\DRIVERS\vfilter.sys, Win32 error 0n2</div><div>*** WARNING: Unable to verify timestamp for vfilter.sys</div>
<div>*** ERROR: Module load completed but symbols could not be loaded for vfilter.sys</div><div>Probably caused by : vfilter.sys ( vfilter+290f )</div><div><br></div><div>Followup: MachineOwner</div><div>---------</div><div>
<br></div><div>2: kd> !analyze -v</div><div>*******************************************************************************</div><div>* *</div>
<div>* Bugcheck Analysis *</div><div>* *</div><div>*******************************************************************************</div>
<div><br></div><div>IRQL_NOT_LESS_OR_EQUAL (a)</div><div>An attempt was made to access a pageable (or completely invalid) address at an</div><div>interrupt request level (IRQL) that is too high. This is usually</div><div>
caused by drivers using improper addresses.</div><div>If a kernel debugger is available get the stack backtrace.</div><div>Arguments:</div><div>Arg1: 0000000000000000, memory referenced</div><div>Arg2: 0000000000000002, IRQL</div>
<div>Arg3: 0000000000000000, bitfield :</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>bit 0 : value 0 = read operation, 1 = write operation</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>bit 3 : value 0 = not an execute operation, 1 = execute operation (only on chips which support this level of status)</div>
<div>Arg4: fffff800028780b6, address which referenced memory</div><div><br></div><div>Debugging Details:</div><div>------------------</div><div><br></div><div><br></div><div>READ_ADDRESS: GetPointerFromAddress: unable to read from fffff80002aaa0e0</div>
<div> 0000000000000000 </div><div><br></div><div>CURRENT_IRQL: 2</div><div><br></div><div>FAULTING_IP: </div><div>nt!KeSetEvent+226</div><div>fffff800`028780b6 488b09 mov rcx,qword ptr [rcx]</div><div><br></div>
<div>CUSTOMER_CRASH_COUNT: 1</div><div><br></div><div>DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT</div><div><br></div><div>BUGCHECK_STR: 0xA</div><div><br></div><div>PROCESS_NAME: svchost.exe</div><div><br></div><div>TRAP_FRAME: fffff88007da5fb0 -- (.trap 0xfffff88007da5fb0)</div>
<div>NOTE: The trap frame does not contain all registers.</div><div>Some register values may be zeroed or incorrect.</div><div>rax=fffffa800be838a8 rbx=0000000000000000 rcx=0000000000000000</div><div>rdx=0000000000000001 rsi=0000000000000000 rdi=0000000000000000</div>
<div>rip=fffff800028780b6 rsp=fffff88007da6140 rbp=0000000000000002</div><div> r8=0000000000000000 r9=0000000000000000 r10=0000000000000000</div><div>r11=0000000000000002 r12=0000000000000000 r13=0000000000000000</div><div>
r14=0000000000000000 r15=0000000000000000</div><div>iopl=0 nv up ei pl nz ac pe cy</div><div>nt!KeSetEvent+0x226:</div><div>fffff800`028780b6 488b09 mov rcx,qword ptr [rcx] ds:0002:00000000`00000000=????????????????</div>
<div>Resetting default scope</div><div><br></div><div>LAST_CONTROL_TRANSFER: from fffff80002873469 to fffff80002873f00</div><div><br></div><div>STACK_TEXT: </div><div>fffff880`07da5e68 fffff800`02873469 : 00000000`0000000a 00000000`00000000 00000000`00000002 00000000`00000000 : nt!KeBugCheckEx</div>
<div>fffff880`07da5e70 fffff800`028720e0 : 00000000`00000002 fffffa80`0be838a0 00000000`00000000 00000000`00000000 : nt!KiBugCheckDispatch+0x69</div><div>fffff880`07da5fb0 fffff800`028780b6 : fffff880`07da61b0 fffff880`02daaa74 00000000`00000050 fffff880`07da6230 : nt!KiPageFault+0x260</div>
<div>fffff880`07da6140 fffff880`02daa90f : fffffa80`00000000 00000000`00000000 00000000`00000000 fffffa80`0be83890 : nt!KeSetEvent+0x226</div><div>fffff880`07da61b0 fffffa80`00000000 : 00000000`00000000 00000000`00000000 fffffa80`0be83890 00000000`00000000 : vfilter+0x290f</div>
<div>fffff880`07da61b8 00000000`00000000 : 00000000`00000000 fffffa80`0be83890 00000000`00000000 fffff880`02daa3fd : 0xfffffa80`00000000</div><div><br></div><div><br></div><div>STACK_COMMAND: kb</div><div><br></div><div>
FOLLOWUP_IP: </div><div>vfilter+290f</div><div>fffff880`02daa90f ?? ???</div><div><br></div><div>SYMBOL_STACK_INDEX: 4</div><div><br></div><div>SYMBOL_NAME: vfilter+290f</div><div><br></div><div>FOLLOWUP_NAME: MachineOwner</div>
<div><br></div><div>MODULE_NAME: vfilter</div><div><br></div><div>IMAGE_NAME: vfilter.sys</div><div><br></div><div>DEBUG_FLR_IMAGE_TIMESTAMP: 49703e23</div><div><br></div><div>FAILURE_BUCKET_ID: X64_0xA_vfilter+290f</div>
<div><br></div><div>BUCKET_ID: X64_0xA_vfilter+290f</div><div><br></div><div>Followup: MachineOwner</div><div>---------</div><div><br></div></div>