id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	mlocked
10809	[PATCH] libmyth: Prevent an access violation by the ALSA library	Lawrence Rust <lvr@…>	JYA	"In audiooutputalsa.cpp, AudioOutputALSA::GetDevices calls the ALSA API snd_device_name_hint with a card index of -1 to obtain a list of hints for all cards.  Unfortunately, with libasound.so.2.0 this API can cause an access violation when the card index is -1. See [http://code.google.com/p/chromium/issues/detail?id=95797]

Running with valgrind shows that snd_device_name_hint makes reference to previously freed memory when called with a card index of -1.

This patch enumerates the cards using other ALSA APIs, thus avoiding the SEGV.

The access violation is often seen when starting from an empty dbase and attempting to enter the audio setup screen.  The bug also applies to fixes/0.25 and 0.24.
"	Patch - Bug Fix	closed	minor	unknown	MythTV - Audio Output	Master Head	medium	Fixed	ALSA snd_device_name_hint		0