Regression - MPD v.0.20.15 crashes when playing 8-channel file. The same file plays fine with MPD v.0.19.19.

[exa065]

The attached test file plays fine with MPD v.0.19.19 but crashes MPD v.0.20.15.

MPD-v.0.20.15-crashes-with-8-channel-file.zip
Test environment:

1. Xonar U7 DAC connected to Lubuntu 16.04 computer.

2. Both MPD v.0.19.19 and MPD v.0.20.15 are started with the same command line parameters and with the same config file (see attached mpd.conf)
   "-v --stdout --no-daemon /etc/mpd.conf"

3. We use Gnome Music Player Client 11.8.16 running on the same computer.

4. The attached 8_Channel_ID_flac.flac is the only file in the MPD queue.

5. Playback is started.

Test Results:

1. MPD v.0.19.19 plays fine. See the attaches log file mpd-0-19-19-log.txt.

2. MPD v.0.20.15 crashes - See the attaches log file mpd-0-20-15-log.txt and the core dump mpd-core-dump.txt

Here is the output of "aplay -l":

**** List of PLAYBACK Hardware Devices **** card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC283 Analog [ALC283 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 5: U7 [Xonar U7], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 5: U7 [Xonar U7], device 1: USB Audio [USB Audio #1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 5: U7 [Xonar U7], device 2: USB Audio [USB Audio #2]
Subdevices: 1/1
Subdevice #0: subdevice #0

Here is the output of "aplay -L":

null
Discard all samples (playback) or generate zero samples (capture) exasound
exaSound device
exasound-DoP
exaSound device in DSD over PCM mode
hdmi:CARD=HDMI,DEV=0
HDA Intel HDMI, HDMI 0
HDMI Audio Output
hdmi:CARD=HDMI,DEV=1
HDA Intel HDMI, HDMI 1
HDMI Audio Output
hdmi:CARD=HDMI,DEV=2
HDA Intel HDMI, HDMI 2
HDMI Audio Output
dmix:CARD=HDMI,DEV=3
HDA Intel HDMI, HDMI 0
Direct sample mixing device
dmix:CARD=HDMI,DEV=7
HDA Intel HDMI, HDMI 1
Direct sample mixing device
dmix:CARD=HDMI,DEV=8
HDA Intel HDMI, HDMI 2
Direct sample mixing device
dsnoop:CARD=HDMI,DEV=3
HDA Intel HDMI, HDMI 0
Direct sample snooping device
dsnoop:CARD=HDMI,DEV=7
HDA Intel HDMI, HDMI 1
Direct sample snooping device
dsnoop:CARD=HDMI,DEV=8
HDA Intel HDMI, HDMI 2
Direct sample snooping device
hw:CARD=HDMI,DEV=3
HDA Intel HDMI, HDMI 0
Direct hardware device without any conversions
hw:CARD=HDMI,DEV=7
HDA Intel HDMI, HDMI 1
Direct hardware device without any conversions
hw:CARD=HDMI,DEV=8
HDA Intel HDMI, HDMI 2
Direct hardware device without any conversions
plughw:CARD=HDMI,DEV=3
HDA Intel HDMI, HDMI 0
Hardware device with all software conversions
plughw:CARD=HDMI,DEV=7
HDA Intel HDMI, HDMI 1
Hardware device with all software conversions
plughw:CARD=HDMI,DEV=8
HDA Intel HDMI, HDMI 2
Hardware device with all software conversions default:CARD=PCH
HDA Intel PCH, ALC283 Analog
Default Audio Device
sysdefault:CARD=PCH
HDA Intel PCH, ALC283 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
Front speakers
surround21:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
dmix:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
Direct sample mixing device
dsnoop:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
Direct sample snooping device
hw:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
Direct hardware device without any conversions
plughw:CARD=PCH,DEV=0
HDA Intel PCH, ALC283 Analog
Hardware device with all software conversions
default:CARD=U7
Xonar U7, USB Audio
Default Audio Device
sysdefault:CARD=U7
Xonar U7, USB Audio
Default Audio Device
front:CARD=U7,DEV=0
Xonar U7, USB Audio
Front speakers
surround21:CARD=U7,DEV=0
Xonar U7, USB Audio
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=U7,DEV=0
Xonar U7, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=U7,DEV=0
Xonar U7, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=U7,DEV=0
Xonar U7, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=U7,DEV=0
Xonar U7, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=U7,DEV=0
Xonar U7, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=U7,DEV=0
Xonar U7, USB Audio
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=U7,DEV=0
Xonar U7, USB Audio
Direct sample mixing device
dmix:CARD=U7,DEV=1
Xonar U7, USB Audio #1
Direct sample mixing device
dmix:CARD=U7,DEV=2
Xonar U7, USB Audio #2
Direct sample mixing device
dsnoop:CARD=U7,DEV=0
Xonar U7, USB Audio
Direct sample snooping device
dsnoop:CARD=U7,DEV=1
Xonar U7, USB Audio #1
Direct sample snooping device
dsnoop:CARD=U7,DEV=2
Xonar U7, USB Audio #2
Direct sample snooping device
hw:CARD=U7,DEV=0
Xonar U7, USB Audio
Direct hardware device without any conversions
hw:CARD=U7,DEV=1
Xonar U7, USB Audio #1
Direct hardware device without any conversions
hw:CARD=U7,DEV=2
Xonar U7, USB Audio #2
Direct hardware device without any conversions
plughw:CARD=U7,DEV=0
Xonar U7, USB Audio
Hardware device with all software conversions
plughw:CARD=U7,DEV=1
Xonar U7, USB Audio #1
Hardware device with all software conversions
plughw:CARD=U7,DEV=2
Xonar U7, USB Audio #2
Hardware device with all software conversions