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AULab crashes during recording
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AULab crashes during recording

  • Subject: AULab crashes during recording
  • From: Alex Weiss <email@hidden>
  • Date: Fri, 9 Jul 2010 17:14:44 +0200
Hi,

I have an AULab file with two 8-channel tracks and an AUAudioFilePlayer that feeds both tracks. Whenever I try to record one of the tracks, AULab immediately crashes after I close the file dialog. Here's an excerpt from the problem report:

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread:  6

[snip]

Thread 6 Crashed:
0   libSystem.B.dylib             0xffff08b7 __memcpy + 279
1   ....audio.toolbox.AudioToolbox 0x961c6285 AudioRingBuffer::Store(AudioBufferList const*, unsigned long, long long) + 721
2   ....audio.toolbox.AudioToolbox 0x961c45b3 ExtAudioFile::WriteFramesAsync(unsigned long, AudioBufferList const*) + 375
3   ....audio.toolbox.AudioToolbox 0x961ba446 ExtAudioFileWriteAsync + 82
4   com.apple.audio.aulab         0x0000ad05 0x1000 + 40197
5   com.apple.audio.aulab         0x0000b9f5 0x1000 + 43509
6   com.apple.audio.aulab         0x00022bcf 0x1000 + 138191
7   ...pple.audio.units.Components 0x70005853 0x70000000 + 22611
8   ...pple.audio.units.Components 0x7003054d SystemOutputAUEntry + 670
9   ...pple.audio.units.Components 0x70008b9f 0x70000000 + 35743
10  ...pple.audio.units.Components 0x70009830 0x70000000 + 38960
11  ...pple.audio.units.Components 0x70008d08 0x70000000 + 36104
12  ....audio.toolbox.AudioToolbox 0x96166f5b AudioConverterChain::CallInputProc(unsigned long) + 881
13  ....audio.toolbox.AudioToolbox 0x96166a83 AudioConverterChain::FillBufferFromInputProc(unsigned long*, CABufferList*) + 95
14  ....audio.toolbox.AudioToolbox 0x96166a11 BufferedAudioConverter::GetInputBytes(unsigned long, unsigned long&, CABufferList const*&) + 199

I tested this a bit further, and it seems that this always happen when there is more than 8-channel track - if there's only one, it works just fine. Also, it doesn't matter whether there are plug-ins inserted or not.

Has anybody experienced something similar?

Alex
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