[pulseaudio-discuss] Why do I keep finding crashes?

[Weedy]

Hello again, I've gotten better at back traces.

I: [pulseaudio] module.c: Loaded "module-alsa-card" (index: #5;
argument: "device_id="0" name="pci-0000_00_1b.0"
card_name="alsa_card.pci-0000_00_1b.0" namereg_fail=false tsched=yes
fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes
card_properties="module-udev-detect.discovered=1"").
I: [pulseaudio] module-udev-detect.c: Card
/devices/pci0000:00/0000:00:1b.0/sound/card0
(alsa_card.pci-0000_00_1b.0) module loaded.
D: [pulseaudio] module-udev-detect.c: /dev/snd/controlC1 is accessible: yes
D: [pulseaudio] module-udev-detect.c:
/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.2/sound/card1 is busy: no
D: [pulseaudio] module-udev-detect.c: Loading module-alsa-card with
arguments 'device_id="1" name="usb-HP_HP_Webcam_3110-02-H3110"
card_name="alsa_card.usb-HP_HP_Webcam_3110-02-H3110" namereg_fail=false
tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes
use_ucm=yes card_properties="module-udev-detect.discovered=1"'
D: [pulseaudio] reserve-wrap.c: Successfully acquired reservation lock
on device 'Audio1'
I: [pulseaudio] utils.c: could not open configuration file
/usr/share/alsa/ucm/HP Webcam 3110/HP Webcam 3110.conf
I: [pulseaudio] parser.c: error: could not parse configuration for card
HP Webcam 3110
I: [pulseaudio] main.c: error: failed to import HP Webcam 3110 use case
configuration -2
I: [pulseaudio] alsa-ucm.c: UCM not available for card HP Webcam 3110
D: [pulseaudio] alsa-mixer.c: Looking at profile input:analog-mono
D: [pulseaudio] alsa-mixer.c: Checking for recording on Analog Mono
(analog-mono)
D: [pulseaudio] alsa-util.c: Trying hw:1 with SND_PCM_NO_AUTO_FORMAT ...
D: [pulseaudio] alsa-util.c: Managed to open hw:1
D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 11888 ms

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffed2aa700 (LWP 14479)]
snd_pcm_area_silence (dst_area=dst_area at entry=0x7fffed2a9c50,
dst_offset=dst_offset at entry=15566, samples=2, samples at entry=17202,
format=format at entry=SND_PCM_FORMAT_S16_LE)
    at
/var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:2571
2571
/var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:
No such file or directory.
(gdb) bt full
#0  snd_pcm_area_silence (dst_area=dst_area at entry=0x7fffed2a9c50,
dst_offset=dst_offset at entry=15566, samples=2, samples at entry=17202,
    format=format at entry=SND_PCM_FORMAT_S16_LE) at
/var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:2571
        dwords = <optimized out>
        dstp = <optimized out>
        dst = <optimized out>
        dst_step = <optimized out>
        width = 16
        silence = 0
        __FUNCTION__ = "snd_pcm_area_silence"
#1  0x00007fffed2fd20d in snd_pcm_areas_silence (dst_areas=0x677070,
dst_offset=7783, channels=<optimized out>, frames=8601,
format=SND_PCM_FORMAT_S16_LE)
    at
/var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:2684
        d = {addr = 0x7ffff7fdb000, first = 0, step = 16}
        step = <optimized out>
        begin = <optimized out>
        chns = 2
        err = <optimized out>
        addr = <optimized out>
        width = 16
#2  0x00007fffed33ea85 in snd_pcm_softvol_write_areas (pcm=0x7317e0,
areas=0x677050, offset=<optimized out>, size=8601,
slave_areas=<optimized out>, slave_offset=7783,
    slave_sizep=0x7fffed2a9d60) at
/var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm_softvol.c:607
        svol = 0x71f8d0
#3  0x00007fffed30f403 in snd_pcm_plugin_mmap_commit (pcm=0x7317e0,
offset=<optimized out>, size=8601)
    at
/var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm_plugin.c:424
        frames = 8601
        cont = 8601
        slave_frames = 8601
        err = <optimized out>
        slave_areas = 0x677050
        slave_offset = 7783
        result = <optimized out>
        plugin = 0x71f8d0
        slave = 0x72e060
        areas = 0x677050
        appl_offset = 7783
        slave_size = 15528
        xfer = <optimized out>
        __FUNCTION__ = "snd_pcm_plugin_mmap_commit"
#4  0x00007fffed5b923a in mmap_write (on_timeout=false, polled=false,
sleep_usec=<synthetic pointer>, u=0x6d1570) at modules/alsa/alsa-sink.c:647
        chunk = {memblock = 0x7fffe80019b0, index = 0, length = 34404}
        err = <optimized out>
        frames = 8601
        sframes = <optimized out>
        written = 34404
        p = <optimized out>
        areas = 0x677050
        offset = 7783
        n = <optimized out>
        n_bytes = 62112
        r = <optimized out>
        after_avail = false
---Type <return> to continue, or q <return> to quit---
        process_usec = 20000
        left_to_play = <optimized out>
        input_underrun = <optimized out>
        work_done = false
        max_sleep_usec = 351519
        j = 1
#5  thread_func (userdata=0x6d1570) at modules/alsa/alsa-sink.c:1734
        work_done = <optimized out>
        sleep_usec = 0
        on_timeout = <optimized out>
        ret = <optimized out>
        rtpoll_sleep = 0
        real_sleep = <optimized out>
        u = 0x6d1570
        revents = 0
        __func__ = "thread_func"
        __PRETTY_FUNCTION__ = "thread_func"
#6  0x00007ffff76d6356 in internal_thread_func (userdata=0x68d820) at
pulsecore/thread-posix.c:83
        t = 0x68d820
#7  0x00007ffff6e28fdb in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#8  0x00007ffff696027d in clone () from /lib64/libc.so.6
No symbol table info available.
(gdb)