gnome-control-center crashed with SIGSEGV -- pipewire

[Garrett Comeaux]

Just upgraded from 22.04 to 22.10 and am trying to get pipewire + pulseaudio working. It seems like some of the apps (gsd-sound?) aren't quite ready for pipewire ... restarting the services (systemctl --user restart pipewire pipewire-pulse) causes the sound settings dialog to collect a lot of stale entries for output devices. When I select them and try to test, the app crashes.

ProblemType: Crash
DistroRelease: Ubuntu 22.10
Package: gnome-control-center 1:43.0-1ubuntu2
ProcVersionSignature: Ubuntu 5.19.0-26.27-generic 5.19.7
Uname: Linux 5.19.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Tue Jan 3 10:03:34 2023
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2022-01-05 (363 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
ProcCmdline: gnome-control-center
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
SegvAnalysis:
 Segfault happened at: 0x7f3523070a2f: mov %esi,(%rdx)
 PC (0x7f3523070a2f) ok
 source "%esi" ok
 destination "(%rdx)" (0x00000021) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: gnome-control-center
StacktraceTop:
 () at /lib/x86_64-linux-gnu/libpulse.so.0
 pa_context_set_card_profile_by_index () at /lib/x86_64-linux-gnu/libpulse.so.0
 gvc_mixer_card_change_profile ()
 gvc_mixer_control_change_profile_on_selected_device ()
 g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-control-center crashed with SIGSEGV
UpgradeStatus: Upgraded to kinetic on 2022-12-28 (5 days ago)
UserGroups: adm cdrom dialout dip disk docker libvirt lpadmin lxd plugdev sambashare sudo wireshark
mtime.conffile..etc.apport.crashdb.conf: 2022-08-24T09:03:25.873541
separator:

[Apport retracing service (apport)]

StacktraceTop:
 pa_context_set_error (c=0x564620746c60, error=15) at ../src/pulse/context.c:333
 pa_context_set_card_profile_by_index (c=0x564620746c60, idx=96, profile=0x5646216e9780 "output:hdmi-stereo-extra4", cb=cb@entry=0x56461fd0f0d0 <_pa_context_set_card_profile_by_index_cb>, userdata=userdata@entry=0x564620bc9a30) at ../src/pulse/introspect.c:1078
 gvc_mixer_card_change_profile (card=0x564620bc9a30, profile=<optimized out>) at ../subprojects/gvc/gvc-mixer-card.c:254
 gvc_mixer_control_change_profile_on_selected_device (control=0x564620bca230, device=0x564620de1ca0, profile=<optimized out>) at ../subprojects/gvc/gvc-mixer-control.c:570
 g_closure_invoke (closure=0x564620bb8630, return_value=0x0, n_param_values=1, param_values=0x7ffde16927b0, invocation_hint=0x7ffde1692730) at ../../../gobject/gclosure.c:832

[Marc Deslauriers (mdeslaur)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.