[pulseaudio-discuss] PulseAudio crashes when setting a source output volume

[David Henningsson]

Note that this only happened after disabling flat-volumes.

This is from currently recording into Audacity, and using pavucontrol to 
change the source output volume.

I: alsa-sink.c: Increasing minimal latency to 2.00 ms
D: alsa-sink.c: Latency set to 20.00ms
D: alsa-sink.c: hwbuf_unused=349272
D: alsa-sink.c: setting avail_min=87760
D: alsa-sink.c: Latency set to 20.00ms
D: alsa-sink.c: hwbuf_unused=349272
D: alsa-sink.c: setting avail_min=87760
D: protocol-native.c: Client pavucontrol changes volume of source output 
ALSA Capture.
E: sample-util.c: Assertion 'c->length % pa_frame_size(spec) == 0' 
failed at pulsecore/sample-util.c:737, function pa_volume_memchunk(). 
Aborting.

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7fffeceb8700 (LWP 4790)]
0x00007ffff663ec55 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt full
#0  0x00007ffff663ec55 in raise () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007ffff6642a06 in abort () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007ffff7b82fa7 in pa_volume_memchunk (c=0x7fffeceb7cd0, 
spec=0x88d724, volume=0x88d69c) at pulsecore/sample-util.c:736
         ptr = <value optimized out>
         linear = {{f = 1.23594525e-42, i = 882}, {f = 0, i = 0}, {f = 
-5.90432221e+33, i = 4153511299}, {f = 4.59163468e-41,
             i = 32767}, {f = -7.34647593e+33, i = 4155841224}, {f = 
4.59163468e-41, i = 32767}, {f = -5.91324343e+33,
             i = 4153525712}, {f = 4.59163468e-41, i = 32767}, {f = 
1.76628907e-39, i = 1260466}, {f = 0, i = 0}, {
             f = -5.88461049e+33, i = 4153479453}, {f = 4.59163468e-41, 
i = 32767}, {f = nan(0x7fffff), i = 2147483647}, {f = 0,
             i = 0}, {f = 8.98059676e-39, i = 6408768}, {f = 0, i = 0}, 
{f = 1.23594525e-42, i = 882}, {f = 0, i = 0}, {
             f = -5.90901462e+33, i = 4153518880}, {f = 4.59163468e-41, 
i = 32767}, {f = 1.22487387e-38, i = 8740992}, {f = 0,
             i = 0}, {f = 1.22487387e-38, i = 8740992}, {f = 0, i = 0}, 
{f = -7.34647593e+33, i = 4155841224}, {f = 4.59163468e-41,
             i = 32767}, {f = -5.91324343e+33, i = 4153525712}, {f = 
4.59163468e-41, i = 32767}, {f = 0, i = 0}, {f = 0, i = 0}, {
             f = 1.23594525e-42, i = 882}, {f = 0, i = 0}, {f = 
8.98059676e-39, i = 6408768}, {f = 0, i = 0}, {f = 0, i = 0}, {
             f = 0, i = 0}, {f = 1.25646026e-38, i = 8966400}, {f = 0, i 
= 0}, {f = -5.90925912e+33, i = 4153519275}, {
             f = 4.59163468e-41, i = 32767}, {f = 1.76752502e-39, i = 
1261348}, {f = 0, i = 0}, {f = 1.25375183e-38, i = 8947072}, {
             f = 0, i = 0}, {f = 1.23594525e-42, i = 882}, {f = 0, i = 
0}, {f = -5.91387478e+33, i = 4153526732}, {
             f = 4.59163468e-41, i = 32767}, {f = 1.22768543e-38, i = 
8761056}, {f = 0, i = 0}, {f = -5.8559429e+33,
             i = 4153433138}, {f = 4.59163468e-41, i = 32767}, {f = 
-2.27749582e+27, i = 3974855888}, {f = 4.59163468e-41,
             i = 32767}, {f = -7.77774515e+28, i = 4017836032}, {f = 
4.59163468e-41, i = 32767}, {f = -9.70501044e+33,
             i = 4159651642}, {f = 4.59163468e-41, i = 32767}, {f = 
-5.91959839e+33, i = 4153535979}, {f = 4.59163468e-41,
             i = 32767}, {f = 1.23594525e-42, i = 882}, {f = 0, i = 0}, 
{f = 1.2564894e-38, i = 8966608}, {f = 0, i = 0}}
         do_volume = <value optimized out>
         __func__ = "pa_volume_memchunk"
         __PRETTY_FUNCTION__ = "pa_volume_memchunk"
#3  0x00007ffff7ba34b8 in pa_source_output_push (o=0x88d1d0, 
chunk=<value optimized out>) at pulsecore/source-output.c:750
         qchunk = {memblock = 0x7fffef7b5000, index = 0, length = 882}
         nvfs = false
         need_volume_factor_source = false
         volume_is_norm = false
         length = <value optimized out>
         limit = 0
         mbs = 0
         __func__ = "pa_source_output_push"
         __PRETTY_FUNCTION__ = "pa_source_output_push"
#4  0x00007ffff7ba9651 in pa_source_post (s=0x7fffe8022e50, 
chunk=0x7fffeceb7e00) at pulsecore/source.c:874
         o = 0x88d1d0
         state = 0xffffffffffffffff
         __func__ = "pa_source_post"
---Type <return> to continue, or q <return> to quit---
         __PRETTY_FUNCTION__ = "pa_source_post"
#5  0x00007fffedee025f in mmap_read (userdata=0x7fffe80083c0) at 
modules/alsa/alsa-source.c:583
         chunk = {memblock = 0x87c240, index = 0, length = 882}
         err = <value optimized out>
         frames = 441
         sframes = <value optimized out>
         p = <value optimized out>
         areas = 0x889870
         offset = 42909
         n = <value optimized out>
         n_bytes = 882
         r = <value optimized out>
         after_avail = false
         process_usec = 10000
         work_done = false
         max_sleep_usec = 10000
         left_to_record = <value optimized out>
         j = 1
#6  thread_func (userdata=0x7fffe80083c0) at modules/alsa/alsa-source.c:1375
         work_done = <value optimized out>
         sleep_usec = 0
         on_timeout = <value optimized out>
         ret = <value optimized out>
         rtpoll_sleep = 0
         u = 0x7fffe80083c0
         revents = 0
         __func__ = "thread_func"
         __PRETTY_FUNCTION__ = "thread_func"
#7  0x00007ffff7932d28 in internal_thread_func (userdata=0x7fffe80050b0) 
at pulsecore/thread-posix.c:83
         t = 0x7fffe80050b0
#8  0x00007ffff7048d8c in start_thread () from 
/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#9  0x00007ffff66f11dd in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.


-- 
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic