There is a longstanding bug in Windows 7 where you can blue screen the machine by interrupting a Ping. Some code to reproduce the issue: while (true) { var ping = new Ping(); var send = ping.Send("www.smh.com.au"); // something with large latency Debug.Print("{0}", send.RoundtripTime); } If you run the above in a debugger, and then terminate the process, a BSOD will happen. Any ideas when this will be fixed? Regards, Fil.

To see the cause I have to take a look at the dumps with the Debugging Tools for Windows. Please start the Windows Explorer and go to the folder C:\Windows\Minidump. Next, copy the dmp files to your desktop, zip all dmp into 1 zip file and upload the zip file to your public Skydrive [1] folder and post a link here. André [1] http://social.technet.microsoft.com/Forums/en-US/w7itproui/thread/4fc10639-02db-4665-993a-08d865088d65"A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

Thanks for the reply Andre. I've previously posted the dumps etc. to another forum here is the link. We came to the conclusion it was a bug in Windows, not the network driver? (considered "solved" of sorts :) See the OSVDB link in the post.. http://www.techsupportforum.com/forums/f217/solved-tcpip-sys-bsod-issue-530767.html Regards, Fil.

I can't download the dumps from the forums. Upload the newest dumps as 1 zip to your SkyDrive. André"A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

That's weird, I just clicked on the ZIP in the post and it downloaded fine (?) Anyway, here's the skydrive: http://kdgqjw.blu.livefilestore.com/y1pJSPrYtZwXVcA96o_rX2EM-Xwy07UviBvjnqwFf1J6rYxrsk5EWQ2RfVEH-3M-rcsmDyeSpgXHXIkdwRTMYrAiLQLAJlMqkPM/dumps.zip?download&psid=1 Regards, Fil.

That's weird, I just clicked on the ZIP in the post and it downloaded fine (?) because you're a member of the board and logged in. Bug Check 0xCB: DRIVER_LEFT_LOCKED_PAGES_IN_PROCESS This indicates that a driver or the I/O manager failed to release locked pages after an I/O operation. http://msdn.microsoft.com/en-us/library/ff560212%28VS.85%29.aspx Remarks This bug check is issued only if the registry value \\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\TrackLockedPages is equal to DWORD 1. If this value is not set, the system will issue the less-informative bug check 0x76 (PROCESS_HAS_LOCKED_PAGES). So, remove this value and configure your Windows to create a kernel dump [1] and upload the zipped dump (C:\Windows\memory.dmp) to your SkyDrive and post a link here. André [1] http://www.brighthub.com/computing/windows-platform/articles/81867.aspx"A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

So just to be clear: you want the less informative (no TrackLockedPages) version of the dump? This dump is 143MB compressed, sky drive wont accept anything over 50MB. Any ideas for a better option?Regards, Fil.

give me both kernel dumps. Use a 3rd party tool like 7-zip to create the zip with a max size of 50MB. In this case 7zip creates several parts."A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

Try this one: http://dl.dropbox.com/u/18494365/Memory.zip It might take up to an hour from now to complete uploading.. Regards, Fil.

I've given you a dropbox link to the dump without the registry key.. 35 mins left 50MB?! Come on Skydrive.... ;) Regards, Fil.

ok, the dump was not useful. can you upload a kernel dump with the value set? what are those drivers? they are very old. VSTAZL6.SYS Thu Oct 16 02:53:42 2008 (48F69096) VSTCNXT6.SYS Thu Oct 16 02:52:22 2008 (48F69046) VSTDPV6.SYS Thu Oct 16 02:57:45 2008 (48F69189) WwanUsbMp64.sys Tue Oct 13 15:10:52 2009 Tppwr64v.sys Wed Oct 18 10:40:21 2006 smiifx64.sys Mon May 12 11:01:13 2008 rixdpx64.sys Sat Nov 18 05:07:46 2006 PxHlpa64.sys Fri Feb 02 22:24:22 2007 Make sure that the network card drivers are up to date."A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

OK, I set the registry value and updated my drivers. I noticed some of the above were not even networking related (sound, power etc.) so I did the lot. It still crashes, have uploaded the kernel dump - use the same link as last time in an hours time. Regards, Fil.

Latest dump is good to go at: http://dl.dropbox.com/u/18494365/Memory.zip Regards, Fil.

have you uploaded the new file? I wanted that you set the value back to get a DRIVER_LEFT_LOCKED_PAGES_IN_PROCESS (0xCB) crash. I want to look at the difference."A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

Yes the new uploaded file has the registry value set... do you not see it? Regards, Fil.

no. I got the PROCESS_HAS_LOCKED_PAGES kernel dump. create a new sharing link . maybe I got the old one."A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

Apologies for that, you are right - the registry value had not taken effect. This one is definitely DRIVER_LEFT_LOCKED_PAGES_IN_PROCESS. To avoid any confusion download link is now: http://dl.dropbox.com/u/18494365/Memory2.zip It is saying 50 mins for the file to be in the dropbox.. Regards, Fil.

the dump is not helpful. How do you trigger this BSOD? I tried it with VS2010 and I get no BSOD."A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

Just run it (making sure you have highest latency on the IP you are pinging possible - ideally 300ms+), and stop in the debugger. If the ping is 'in flight' at the stop (after a few attempts) BSOD.... Why was the dump not useful? If you cannot repro it, where to from here? There is a lot of chatter about this issue - it is impacting a population of people, not just me ;) Regards, Fil. Regards, Fil.

Are we going anywhere from here, or is the issue not fixable? Any idea why the dump didn't have any useful information in it? Regards, Fil.

I tried it and for me it never crashed. Which ping response time do you have to get the crash. I have a ping of 500ms to a site and it didn't crash my Windows. Update all network related drivers and tools."A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

Any further thoughts on this? I have a totally new laptop (hardware, software...) and it happens on this too. I have had reports from friends with the same issue on completely different hardware.. Regards, Fil.

I tried it and for me it never crashed. Which ping response time do you have to get the crash. I have a ping of 500ms to a site and it didn't crash my Windows. Update all network related drivers and tools. "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/ Fonud out why you can't repro it: http://www.codeguru.com/forum/showthread.php?t=509623 Set the timeout time to 500ms makes it not crash - use a smaller number :) Regards, Fil.

I'm curious if anyone has found a resolution to this; I'm encountering a very similar problem. Here is the exact scenario: Start Visual Studio 2010 Ultimate Open my Project Start Debugging Debugger encounters an exception on a line like 'TcpClient.Connect(IPAddress.Parse("127.0.0.1"), 2000)' (Simply because the remote endpoint isnt available yet) 'Stop Debugging' Button BlueScreen Associated File: tcpip.sys None of my network drivers ( repeat... none ) USE tcpip.sys, so I am a little baffled as to why this is being encountered in this file - but I don't suppose that matters. I just pulled the latest drivers from HP and installed the original set. No improvement. Anyone?