Re: AudioConvertor crash on i386 - what does it mean?
Re: AudioConvertor crash on i386 - what does it mean?
- Subject: Re: AudioConvertor crash on i386 - what does it mean?
- From: Doug Wyatt <email@hidden>
- Date: Mon, 5 Jun 2006 14:12:07 -0700
A bad pointer: 0x0f22b000 appears in "KERN_INVALID_ADDRESS" and is in
register esi
Doug
On Jun 5, 2006, at 13:37 , Evan Olcott wrote:
OK, just got a few reports of this from an i386 user.
I'm familiar with what the PPC registers might have told me about
this, but I'm not familiar with the i386 registers.
Am I passing AudioConverterConvertBuffer a *nil* pointer or a *bad*
pointer?
And to quote Purple Rain: "Any idea how she mighta got dat way?"
It's only come from one user, and Intel users of our products are
abound - and this is coming from a VERY commonly called routine
(buffer filling). 99.9999% of the time, this routine has no problem.
====
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_INVALID_ADDRESS (0x0001) at 0x0f22b000
<snip>
Thread 12 Crashed:
0 <<00000000>> 0xffff0832 __memcpy + 146 (cpu_capabilities.h:186)
1 ....audio.toolbox.AudioToolbox 0x93e79c03
AudioConverterChain::FillBufferFromInputProc(unsigned long*,
unsigned long*, CABufferList*) + 313
2 ....audio.toolbox.AudioToolbox 0x93e79376
BufferedAudioConverter::GetInputBytes(unsigned long, unsigned
long&, CABufferList const*&) + 234
3 ....audio.toolbox.AudioToolbox 0x93e79207
CBRConverter::RenderOutput(CABufferList*, unsigned long, unsigned
long&, AudioStreamPacketDescription*) + 119
4 ....audio.toolbox.AudioToolbox 0x93e78f6b
BufferedAudioConverter::FillBuffer(unsigned long&,
AudioBufferList&, AudioStreamPacketDescription*) + 211
5 ....audio.toolbox.AudioToolbox 0x93e790f9
AudioConverterChain::RenderOutput(CABufferList*, unsigned long,
unsigned long&, AudioStreamPacketDescription*) + 93
6 ....audio.toolbox.AudioToolbox 0x93ee8034
AudioConverterChain::ConvertBuffer(unsigned long, unsigned char*,
unsigned long&, unsigned char*) + 148
7 ....audio.toolbox.AudioToolbox 0x93e9cb3b
AudioConverterConvertBuffer + 143
8 com.audiofile.AFAudioFile 0x002403ca -[AFEditBlock
fillBuffer:forRange:convertor:bitsPerSample:] + 500
<snip>
Thread 12 crashed with i386 Thread State:
eax: 0x00004000 ebx: 0x93e9cab9 ecx:0x00001000 edx: 0xffffc000
edi: 0x0e807000 esi: 0x0f22b000 ebp:0xb02b0ea8 esp: 0xb02b0ea0
ss: 0x0000002f efl: 0x00010207 eip:0xffff0832 cs: 0x00000027
ds: 0x0000002f es: 0x0000002f fs:0x00000000 gs: 0x00000037
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Doug Wyatt
Core Audio, Apple
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