TwinCAT crashes every now and then with the following message in the eventlog
Debug: CSysService::SysUnhandledExceptionFilter(); Addr:770A2092 Code:C0000005
Search on Google reveals nothing about why this is happening, how to troubleshoot this or even what CSysService is or what the SysUnhandledExceptionFilter method is doing. My guess is that an access violation is happening which is unhandled.
I'm hoping that someone here can help me determine if this is caused by our own code or if this is a problem of TwinCAT itself. And hopefully get some pointers on how to get this resolved.
I tried reproducing this by creating an access violation in code. This however shows a different log message.
You are providing too few informations.
Which Twincat version are you using?
Does it crash while doing some specific operations
(For example pressing a button in the visualization or while doing online change)?
How often does it crash?And since when?
We are using TwinCAT 3.1.4022.28. The crashes don't seem to be related to a use case. At one point it crashed during the night while nobody was operating it. It crashes at random intervals, typically multiple days apart. We have seen about 4 to 5 crashes till now.
On codeguru.com there is an article about the CSysService class and it states:
CSysService is a C++ class which wraps methods around several of the
Win32. API service functions, providing an object-oriented interface
to these functions, grouping common variables and structures in a
single class object. The result is an extensible base class capable of
installing, enumerating, modifying, controlling and removing a service
application in the Service Control Manager.
It means it is an Exception raised by the Win32 API.
On the Beckhoff infosys website you can find the Win32 error codes and their meaning:
https://infosys.beckhoff.com/index.php?content=../content/1031/TcDiagnostics/HTML/TcDiagnostics_WIN32_ErrorCodes.htm&id=
The 0x00000005 error means access denied.
If you take a look at this error on the microsoft support page:
https://support.microsoft.com/en-us/help/842792/an-error-access-denied-error-occurs-when-you-try-to-write-to-a-file-th
you will find out that this error happens when:
you try to write to a file that is in a network shared folder
Your plc is probably trying to write a logfile located in a network shared folder to which it may not always have access to, causing the runtime to crash unexpectedly.
(A network maintenance during the night could explain the access denial and the consequent exception on your machine).
If this is the cause of the problem, please inform the Beckhoff support so that they can investigate it further and maybe fix it in a future release.
Related
I have inherited a program written in VB 6 that is not working when the user tries to print. I had some ocx files I needed to register (regsvr32), which I found using Process Monitor, but I can't see where this error is coming from. Is it possible to find out what component the program was trying to create? This program was written by someone else and I don't have access to anything but the original setup program. Thanks.
So the issue was not the old program, but something to do with Access. I happened upon some articles dealing with this particular issue, but nothing worked. I had to install Access 2013 32 bit in order to make this work. I didn't really fix the cause of the problem, but I wanted to put this here to point any future sufferers they check Office and their program if they run into a similar issue.
HTH
Wade
I have a completely random error popping up on a particular piece of software out in the field. The application is a game written in VB6 and is running on Windows 7 64-bit. Every once in a while, the app crashes, with a generic "program.exe has stopped responding" message box. This game can run fine for days on end until this message appears, or within a matter of hours. No exception is being thrown.
We run this app in Windows 2000 compatibility mode (this was its original OS), with visual themes disabled, and as an administrator. The app itself is purposely simple in terms of using external components and API calls.
References:
Visual Basic for Applications
Visual Basic runtime objects and procedures
Visual Basic objects and procedures
OLE Automation
Microsoft DAO 3.51 Object Library
Microsoft Data Formatting Object Library
Components:
Microsoft Comm Control 6.0
Microsoft Windows Common Controls 6.0 (SP6)
Resizer XT
As you can see, these are pretty straightforward, Microsoft-standard tools, for the most part. The database components exist to interact with an Access database used for bookkeeping, and the Resizer XT was inserted to move this game more easily from its original 800x600 resolution to 1920x1080.
There is no networking enabled on the kiosks; no network drivers, and hence no connections to remote databases. Everything is encapsulated in a single box.
In the Windows Application event log, when this happens, there is an Event ID 1000 faulting a seemingly random module -- so far, either ntdll.dll or lpk.dll. In terms of API calls, I don't see any from ntdll.dll. We are using kernel32, user32, and winmm, for various file system and sound functions. I can't reproduce as it is completely random, so I don't even know where to start troubleshooting. Any ideas?
EDIT: A little more info. I've tried several different versions of Dependency Walker, at the suggestion of some other developers, and the latest version shows that I am missing IESHIMS.dll and GRPSVC.dll (these two seems to be well-known bugs in Depends.exe), and that I have missing symbols in COMCTRL32.dll and IEFRAME.dll. Any clues there?
The message from the application event log isn't that useful - what you need is a post mortem process dump from your process - so you can see where in your code things started going wrong.
Every time I've seen one of these problems it generally comes down to a bad API parameter rather than something more exotic, this may be caused by bad data coming in, but usually it's a good ol fashioned bug that causes the problem.
As you've probably figured already this isn't going to be easy to debug; ideally you'd have a repeatable failure case to debug, instead of relying on capturing dump files from a remote machine, but until you can make it repeatable remote dumps are the only way forwards.
Dr Watson used to do this, but is no longer shipped, so the alternatives are:
How to use the Userdump.exe tool to create a dump file
Sysinternals ProcDump
Collecting User-Mode dumps
What you need to get is a minidump, these contain the important parts of the process space, excluding standard modules (e.g. Kernel32.dll) - and replacing the dump with a version number.
There are instructions for Automatically Capturing a Dump When a Process Crashes - which uses cdb.exe shipped with the debugging tools, however the crucial item is the registry key \\HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\AeDebug
You can change your code to add better error handling - especially useful if you can narrow down the cause to a few procedures and use the techniques described in Using symbolic debug information to locate a program crash. to directly process the map files.
Once you've got a minidump and the symbol files WinDbg is the tool of choice for digging into these dumps - however it can be a bit of a voyage to discover what the cause is.
The only other thing I'd consider, and this depends on your application structure, is to attempt to capture all input events for replay.
Another option is to find a copy of VMWare 7.1 which has replay debugging and use that as the first step in capturing a reproducible set of steps.
Right click your executable object and let it be WINXP compatible pending
when you discover source of the problem to finally solve it
I have a cocoa app which uses core data. Everything seems to be working fine.
However, in a very specific scenario the app was behaving very strangely for our client.
In particular the logs shows this appearing in the output many times (which I've never seen in my testing):
Core Data: annotation: -executeRequest: encountered exception = Updating max pk failed: with userInfo = {
NSSQLiteErrorDomain = 14;
}
Has anyone ever seen this message and do you know what it means? I've tried googling it but found no information other than a few message boards regarding the Growl app having similar problems, with no solution yet available.
Sorry that I can't be more specific regarding what causes this as I'm not even sure myself. I know how to reproduce this on the client's machine but this message seems very random.
I was hoping someone could give me some more information as to what this error means exactly so that I can maybe narrow it down some more. Right now I'm pretty clueless.
Note: This appears on a macbook pro running 10.7.2 (if that matters).
Thanks for any kind of help you can provide, even something vague would help me at this point.
Update:
The managed context "save" method also fails with the following error:
The operation couldn’t be completed. (Cocoa error 134030.)
This is not really a Core Data problem as such, but more an issue of you process running out of file descriptors.
Each process has a limited number of file descriptors. If you run out, Core Data (and many other things) will stop working, because they can no longer open files -- any they'll fail.
First of all, make sure you're not leaking file descriptors, i.e. make sure you close files when you no longer need them.
I'm not sure what kind of changes you're trying to track. Take a look at Tracking File-System Changes.
If you're on 10.7, take a look at dispatch sources and DISPATCH_SOURCE_TYPE_VNODE for a very powerful tool to track file system changes (corresponds to kqueue, but is easier to use).
Core Data also gives this error in a Sandboxed app when it tries to save DB to a location where it doesn't have full read/write access to (if a user opens file for example, Core Data will be able to read/write this file, but not anything else to the same folder).
Core Data fails to write the temporary _journal file to this folder and reports this error.
For my work, I need to create a service that will detect an abnormal program termination and, instead of displaying a message to the user (default behavior), send the generated core dump to a remote server.
I'm pretty sure this can be done, but I have absolutely no clue on where to start. Is there any API/registry settings for this ?
Thank you.
One method is to install an Unhandled Exception Filter and then write a minidump from it which you can then upload to some place of your choosing. I wouldn't totally disregard Windows Error Reporting -- that's an addition to any crash reporting of your own. If your application is for public release then registering for Windows Error Reporting is well worthwhile as you get information about which crashes users are encountering in the wild and when crashes have been fixed you can add a response code to point them to a new version or other relevant information.
Another tool that may be useful depending on how your application is deployed in your organisation is to run Adplus on a user's machine which will collect together crash dumps. This is more useful for one-off crashes that seem to affect an individual user but aren't reproducible in a development environment.
Some other useful links:
http://www.debuginfo.com/articles/effminidumps.html - some useful sample code
http://www.codeproject.com/KB/debug/postmortemdebug_standalone1.aspx
It seems my question was either obvious or stupid (both ?) but anyway, i found some interesting pages after some researches.
Here are the links I found useful:
Track application crashes and disable Windows Error Reporting at the same time!
Disable error reporting
We've been plagued for several years by occasional reports from customers about a non-descript error message "Cannot set allocations" that appears on startup of our app. We have never been able to reproduce the problem in our own test environments so far. I have now run out of ideas for attempting to track this down. Here's a collection of observations that have accumulated over time:
Error message text reads "Cannot set allocations" (note absence of punctuation).
The window title simply reads "Error" (or the localized equivalent).
The "Cannot set allocations" text is always in English regardless of OS locale.
I have so far not been able to locate the DLL or EXE containing the message text.
Google is chock full of reports of this error for a variety of different products - but no solutions.
The only unifying aspect between the affected products I could make out so far was that they all appear to come in the form of DLLs that load into third-party processes (such as addins for Visual Studio or Windows Explorer shell extensions).
Our app is actually a shareware COM-addin for MS Outlook, written in Delphi (i.e. native code - no .NET).
The prime suspect in our case is the third-party licensing wrapper that we're using which decrypts and uncompresses our DLL into memory on the fly. Obviously I couldn't simply give an unprotected version of our app to the affected customers to verify this suspicion. Maybe the other vendors that this has been reported against are using similar products.
Debug versions of the protection wrapper supplied to us by the licensing vendor yielded no results: The log files looked exactly the same as from sessions where the error did not occur. Apparently the "inner" DLL gets decrypted and uncompressed all right but for some reason still fails to get loaded by the host process.
By creating an unprotected "loader" DLL we have been able to pinpoint the occurrence of the error somewhere behind the LoadLibrary call that is supposed to load our DLL into memory.
Extensive logging and global exception hooks in our own code (both the unprotected loader and the protected "core"-DLL) yielded no results at all. The error is obviously raised somewhere else.
The problem described in this earlier question of mine was very probably prompted by the same issue. This was before we created the unprotected loader stub.
The error only occurs at about 1-2% of our customers - whereas typically all installations at any affected customer's site are affected the same.
Sometimes the error goes away after we release a new version but often it will come back again after a couple of weeks or months.
Once the error has started to occur on a machine it does so consistently.
The error never occurs while connected to the affected machine via remote access (e.g. VNC, RDP, TeamViewer, etc.) and none of the affected customers are within travel distance from us so all we have to go by is log files and "eye-witness reports".
One customer reported that the error message dialog apparently was non-modal, i.e. he was able to simply move the dialog box to the side and continue working with the application (minus the functionality that our DLL would have provided). Not sure whether this is universally true in all other occurrences, too.
In some cases customers have been able to permanently rid themselves of the error by disabling or uninstalling other addins from other vendors that were sharing the host application with our own product.
The error has so far been observed on Windows XP, Vista and 7.
During the last few weeks we had a surge of reports from Outlook 2003 / Windows 7 users. Could the situation have been made worse by a recent Windows/Office-update?
Does anyone have any experience with this error at all?
Or any more ideas for investigating this?
I have only recently had this happen, which prompted my search and I ended up here. I can tell you that with me for sure it is in windows 7 home premium BUT ONLY WITH IE9 (which I hate by the way) it reduces the user back to the dummy stage and assumes that we have to be repeated flagged about everything.It will keep asking you if you want to disable add ons to speed up load times but usually on things that aren't really the things slowing the browser down in the first place,it is there is too much garbage loading in the first place.But back to the "Cannot set allocations", I for one have never expirianced it in any other browser which is not to say it doesn't happen with them.
This is going to be pure guess-work, but it sounds like maybe your third-party licensing software is trying to load your DLL at a particular location in memory, which - on these failing systems - happens to already be occupied by something else, perhaps a global hook DLL.
If you have a customer who is willing to work with you a bit, it might shed some light on the situation to get a crash dump (e.g., with ADPlus or maybe simpler with Sysinternals' ProcDump) when the error message is showing. That would show what modules are loaded and possibly the callstack (if it is from a message box at the time of the error as opposed to one that is catching an exception after the problem).
I also have experienced the "Cannot set allocations" issue. Royal pain. I had disabled Java, since I did not seem to need it, I used add/remove programs to remove Java from my system. Then I stated to get those errors. I have reinstalled, but disabled Java in IE explorer. Now I do not get the error anymore. Not a programmer, don't know why this happened. Maybe a clue for someone.
Win 7 - 64bit OS IE Explorer 10. Hope this helps someone figure this out. John
I've seen this happen. In my case a global hook dll created a large memory file mapping, perhaps to the memory the licensing dll was counting on.
I see "Cannot set Allocations" when I open google chrome only. Also after that, chrome closes with a msg saying "Whoa chrome has crashed..."
Still no solution :(
Also not a programmer, but it always happens when I open Chrome. It opens second window with error message 'cannot set allocation'. I usually close it and go on my way. if i don't it usually causes a crash. doesnt happen on any other browsers.