media_addon_server crashes in BMessage::FindData

[win8linux]

Upon startup, media_addon_server immediately crashes. This results in no audio output whatsoever. This occurs even after attempting to start it again manually or killing media_server, which restarts it and media_addon_server.

[win8linux]

syslog

[win8linux]

Crash report

[win8linux]

Audio hardware details

Device name:	Family 17h (Models 00h-0fh) HD Audio Controller
Manufacturer:	Advanced Micro Devices, Inc. [AMD]

device/type	0x4
device/subtype	0x3
device/interface	0
device/vendor	0x1022
device/id	0x1457

[win8linux]

Corrupted System Audio Mixer settings file

[waddlesplash]

When using the "message" command in Terminal, I get:

failed to unflatten message: Invalid Argument

So, is something left in a corrupt state when this happens, and media_addon_server tries to use the mixer anyway?

[Carl_Miller]

Also occurred on my system under beta5; the fix for me was to remove media_addon_server's settings file.

[waddlesplash]

The next time this happens, please upload the file here rather than deleting it.

Interestingly the MixerSettings logic does check that the message unflattened correctly, and bails out of it didn't. I wonder what went wrong in BMessage here then. The attached corrupt message doesn't seem to cause crashes when used with the "message" command in various ways for me.

[waddlesplash]

I managed to reproduce the problem with the "message" command and the debug heap. Fixed in hrev58196.