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[ChrisM]

Hi guys,

A long shot, I know, but recently my software has been crashing quite often. The crash logs show this...

Faulting application name: AuDEC.exe, version: 2.1.0.0, time stamp: 0x4a995ed4
Faulting module name: bass.dll_unloaded, version: 0.0.0.0, time stamp: 0x4a16b463
Exception code: 0xc0000005

...before I go off to try and find what's happening, would anyone know what the above error refers to and where to start looking?

Thanks in advance!
Chris

[Ionut Cristea]

  I'm getting this too, but only on some VB 6 applications.

[ChrisM]

Yea, this particular app is written in VB6 too.

Chris

[Ian @ un4seen]

A long shot, I know, but recently my software has been crashing quite often. The crash logs show this...

Faulting application name: AuDEC.exe, version: 2.1.0.0, time stamp: 0x4a995ed4
Faulting module name: bass.dll_unloaded, version: 0.0.0.0, time stamp: 0x4a16b463
Exception code: 0xc0000005

...before I go off to try and find what's happening, would anyone know what the above error refers to and where to start looking?

That looks like it may be trying to access BASS.DLL after it has been unloaded. Does the crash only happen after closing the app when running it under the VB6 IDE, ie. not a compiled EXE? If so, is it also only when BASS_Free/RecordFree hasn't been called?

[ChrisM]

It apparently happens randomly on its own. I only unload the DLL when the program is closed manually. This is the error that appears in the logs at the time of the crash...

Log Name:      Application
Source:        Application Error
Date:          24/10/2011 12:45:05
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      WIN-94UISBLD65Q
Description:
Faulting application name: AuDEC.exe, version: 2.1.0.0, time stamp: 0x4e9586ee
Faulting module name: bass.dll_unloaded, version: 0.0.0.0, time stamp: 0x4e66166b
Exception code: 0xc0000005
Fault offset: 0x04c2251a
Faulting process id: 0x78ac
Faulting application start time: 0x01cc91d8b0230e1f
Faulting application path: C:\Program Files (x86)\AuDEC Professional\AuDEC.exe
Faulting module path: bass.dll
Report Id: 9cfff057-fe35-11e0-9352-00259022e04d
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2011-10-24T11:45:05.000000000Z" />
    <EventRecordID>755239</EventRecordID>
    <Channel>Application</Channel>
    <Computer>WIN-94UISBLD65Q</Computer>
    <Security />
  </System>
  <EventData>
    <Data>AuDEC.exe</Data>
    <Data>2.1.0.0</Data>
    <Data>4e9586ee</Data>
    <Data>bass.dll_unloaded</Data>
    <Data>0.0.0.0</Data>
    <Data>4e66166b</Data>
    <Data>c0000005</Data>
    <Data>04c2251a</Data>
    <Data>78ac</Data>
    <Data>01cc91d8b0230e1f</Data>
    <Data>C:\Program Files (x86)\AuDEC Professional\AuDEC.exe</Data>
    <Data>bass.dll</Data>
    <Data>9cfff057-fe35-11e0-9352-00259022e04d</Data>
  </EventData>
</Event>

Does that help at all? Perhaps this is the error that happens after the crash :-(

Many thanks,
Chris

[Ian @ un4seen]

I will send you a debug version to get some information on what's happening.

[Lowdown]

What is the conclusion ?

I also have the same problem, and it drives me nuts.
Access violation - c0000005.

Program randomly freezes with uncatchable exception.
I have run program through WinDbg and finally get what cosing the exception.

Details about my program:
Stream / hardware recorder.
When I use program as Line/Mic recorder works without exception.
When used as stream recorder get's freezed.

It seems that this exception only recurs when stream needs to get restarted and not on every restart !
But the strange thing is, everything continues to work .. :S

Please help me (as would Beatles said)

[Ian @ un4seen]

Please post/upload any details that you have on the crash, eg. the location/call-stack/etc. If you have a dump file, that can be uploaded here...

   ftp.un4seen.com/incoming/

Also confirm what Windows version and programming language/IDE you're using.

[Lowdown]

I'm using C# 3.5 with Bass.NET library, exception is thrown on Windows XP SP3, Windows 7 32&64.

This is what DrWtsn mini dump has:
Access violation - code c0000005 (first/second chance not available)
eax=000d1100 ebx=00000001 ecx=0000000b edx=00000001 esi=06210710 edi=03f1fdb8
eip=5cc84a54 esp=03f19b04 ebp=03f1fdb8 iopl=0         nv up ei pl nz ac pe nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00000216
5cc84a54 ??

Application event:
Faulting application mrrec.exe,
version 1.0.0.0, stamp 4ed4cbf3,
faulting module ntdll.dll (some times here is msvcrt.dll,kernel32.dll),
version 5.1.2600.6055,
stamp 4d00f27d,
debug? 0,
fault address 0x00011689.

If you need more just tell me, I just run WinDbg to my application, and now waiting to throw exception.

[Ian @ un4seen]

OK, please upload a dump file for the crash to have a look at. You can generate the dump file in WinDbg like this: .dump /ma path\filename.dmp ... The file could be quite large, so you should ZIP it before uploading.

[Lowdown]

I uploaded two dump files.
First is with some exceptions what didn't happen before, and I don't understand what they are.
Second file is just after first with GO function.

file: mrec_dumps.rar

[Ian @ un4seen]

Both dump files appear to be of the same crash, which happened in the BASS_AAC add-on. Do you remember what file you were playing (or trying to) when it happened? Please first try it again with the latest BASS_AAC build, available here...

   www.un4seen.com/stuff/bass_aac.dll

And if the problem still happens with that, then upload the troublesome file to have a look at.

[Lowdown]

I have started new debug session with latest BASS_AAC build.

Application is recording multiple streams, mp3/aac.
Crash appears randomly, as far as I can see, with no visible pattern.

[Lowdown]

Hi, I've uploaded new dump .. 

[Ian @ un4seen]

In this case it appears to have crashed in an internet download thread, at the end of the download. It looks like some memory (containing info on the download) may have been freed before the thread was finished with it. I'll send you a debug version to get some more info on what's happening there.

[Jens Lühmann]

Hi Ian,

did you find a solution for the msvcrt.dll crash ?
I have still the same problem since one year. In my case it crashes immediately if i try to open more streams than the cpu can work off.

best wishes
Jens

[Ian @ un4seen]

It's still being tested, but it's looking like a solution has been found. Please try this latest build and let me know if you still see crashing in your case...

   www.un4seen.com/stuff/bass.dll

[Jens Lühmann]

Hi Ian,

i just tested the new bass.dll. It seems to be better with this update, but it still crashes.
I tried to upload 2 dmp-files to your server, but the second one is incomplete, permission is now denied.

The complete file ( AirplayControl.exe.4252.dmp ) crashed with wmvcore error. The second one, which i cannot upload, crashed with msvcrt.dll error.
It would be good, if you'd send me an actual debug version of bass.dll 

best wishes
Jens

[Ian @ un4seen]

Oops, the upload space was full. Some old stuff has now been removed and the allocation raised, so please retry uploading the 2nd dump file.

Regarding the "4252" dump file, it has crashed in a Windows Media thread. That is something different to the previous crashing in this thread (so the BASS.DLL update is unlikely to help), but the call-stack does look familiar. I seem to recall seeing similar crash reports years ago. I don't recall what happened regarding that, but I haven't seen any reports in quite a while. I guess it's possible there has been a regression in BASSWMA. I'll try to find out.

[Jens Lühmann]

Hi Ian,

i just uploaded the second file.
bass.dll and basswma.dll i use are up-to-date.

thanks and best wishes
Jens