AppleUSBAudioPlugin::pluginDeviceRequest symbol not available

Originator:bakedscrod
Number:rdar://21367554 Date Originated:12-Jun-2015 06:26 PM
Status:Closed Resolved:Yes
Product:OS X Product Version:10.11 / 15A178w
Classification:Serious Bug Reproducible:Always
 
Kernel extensions based on the AppleUSBAudioPlugin API (dependent on com.apple.driver.AppleUSBAudio) and using the "pluginDeviceRequest" member function, cannot be loaded because the symbol is unresolved.

Steps to Reproduce:
1. Install kernel extension under /Library/Extensions/
2. Load kernel extension with kextutil -t
3. Verify loading with kextstat

Expected Results:
kextutil should return with a successful exit code (0), and kextstat should list the bundle identifier

Notes:
AppleUSBAudioPlugin::pluginDeviceRequest is available on previous versions of OS X and is defined in AppleUSBAudioPlugin.h of the SampleUSBAudioPlugin sample code. 

Configuration:
A code-signed x86_64 build of SampleUSBAudioPlugin (which does not use pluginDeviceRequest) loads on 10.11 without issue. Kexts which use pluginDeviceRequest load without issue on OS X 10.9 and 10.10, but fails to load on 10.11.

Comments


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