crasher with stock USB audio driver
crasher with stock USB audio driver
- Subject: crasher with stock USB audio driver
- From: david tay <email@hidden>
- Date: Fri, 17 Jun 2005 17:00:04 -0700
Hi,
I've been working with a class compliant USB audio device and
whenever attempting to play sounds, I get a Kernel panic with the
following bt. The device enumerates and shows up as USB audio class
compliant. I'm suspecting that it crashes soon after
AppleUSBAudioEngine::sampleRateHandler is called.
Could a problem during the initialization phase (ie - when the driver
matches and loads up) cause the crash?
#0 0x2e08865c in ?? ()
#1 0x2e08b164 in ?? ()
warning: Previous frame identical to this frame (corrupt stack?)
#2 0x2e08b164 in ?? ()
#3 0x2e08a1f4 in ?? ()
#4 0x2e0870f8 in ?? ()
#5 0x004f370c in IOAudioEngine::startAudioEngine ()
#6 0x004f28f8 in IOAudioEngine::incrementActiveUserClients ()
#7 0x004f27ec in IOAudioEngine::startClient ()
#8 0x004f81d4 in IOAudioEngineUserClient::startClient ()
#9 0x004f8084 in IOAudioEngineUserClient::startClientAction ()
#10 0x00268684 in IOCommandGate::runAction (this=0x271bb00,
inAction=0x4f8040 <IOAudioEngineUserClient::startClientAction
(OSObject*, void*, void*, void*, void*)>, arg0=0x0, arg1=0x0,
arg2=0x0, arg3=0x0) at /SourceCache/xnu/xnu-517.12.7/iokit/Kernel/
IOCommandGate.cpp:98
#11 0x002809d4 in is_io_connect_method_scalarI_scalarO
(connect=0x2001800, index=3758097090, input=0x26e8b38, inputCount=0,
output=0x269de38, outputCount=0x269de34) at /SourceCache/xnu/
xnu-517.12.7/iokit/Kernel/IOUserClient.cpp:2113
#12 0x0007b09c in _Xio_connect_method_scalarI_scalarO
(InHeadP=0x26e8b10, OutHeadP=0x269de10) at device/device_server.c:4250
Thanks,
David
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