ubuntustudio-bugs team mailing list archive

[Jakob Lell <1915058@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

When closing pavucontrol with the [CTRL]+[q] keyboard shortcut, it
directly segfaults. The problem affects both Ubuntu 20.04 (pavucontrol
4.0-1build1) and 20.10 (pavucontrol 4.0-2) and can easily be reproduced
(tried it on two different machines and also in a VM).

>From the crash dump (also uploaded one via the crash reporting dialog,
don't know if anyone is actively analyzing crash uploads for universe
packages there):

$ cat Stacktrace
#0  0x00007f408d4822c5 in Gtk::Main::quit() () at /usr/lib/x86_64-linux-gnu/libgtkmm-3.0.so.1
#1  0x000056074fb58204 in  ()
#2  0x00007f408d4ebfe9 in Gtk::Widget_Class::key_press_event_callback(_GtkWidget*, _GdkEventKey*) () at /usr/lib/x86_64-linux-gnu/libgtkmm-3.0.so.1
#3  0x00007f408c9fa7ec in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#4  0x00007f408c5b1b56 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007f408c5c9f09 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007f408c5cada3 in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007f408c9a3514 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#8  0x00007f408c851e0f in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#9  0x00007f408c853a93 in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#10 0x00007f408befde89 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#11 0x00007f408bf328e6 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#12 0x00007f408c4be4db in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f408c4be788 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f408c4be853 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f408bc1f54d in g_application_run () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#16 0x000056074fb45579 in main ()

$ cat SegvAnalysis |c++filt 
Segfault happened at: 0x7f408d4822c5 <Gtk::Main::quit()+21>:	mov    (%rdi),%rax
PC (0x7f408d4822c5) ok
source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
destination "%rax" ok

** Affects: pavucontrol (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1915058

Title:
  pavucontrol segfaults when closing with [CTRL]+[q]

Status in pavucontrol package in Ubuntu:
  New

Bug description:
  When closing pavucontrol with the [CTRL]+[q] keyboard shortcut, it
  directly segfaults. The problem affects both Ubuntu 20.04 (pavucontrol
  4.0-1build1) and 20.10 (pavucontrol 4.0-2) and can easily be
  reproduced (tried it on two different machines and also in a VM).

  From the crash dump (also uploaded one via the crash reporting dialog,
  don't know if anyone is actively analyzing crash uploads for universe
  packages there):

  $ cat Stacktrace
  #0  0x00007f408d4822c5 in Gtk::Main::quit() () at /usr/lib/x86_64-linux-gnu/libgtkmm-3.0.so.1
  #1  0x000056074fb58204 in  ()
  #2  0x00007f408d4ebfe9 in Gtk::Widget_Class::key_press_event_callback(_GtkWidget*, _GdkEventKey*) () at /usr/lib/x86_64-linux-gnu/libgtkmm-3.0.so.1
  #3  0x00007f408c9fa7ec in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
  #4  0x00007f408c5b1b56 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #5  0x00007f408c5c9f09 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #6  0x00007f408c5cada3 in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #7  0x00007f408c9a3514 in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
  #8  0x00007f408c851e0f in  () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
  #9  0x00007f408c853a93 in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
  #10 0x00007f408befde89 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
  #11 0x00007f408bf328e6 in  () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
  #12 0x00007f408c4be4db in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #13 0x00007f408c4be788 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #14 0x00007f408c4be853 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #15 0x00007f408bc1f54d in g_application_run () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
  #16 0x000056074fb45579 in main ()

  $ cat SegvAnalysis |c++filt 
  Segfault happened at: 0x7f408d4822c5 <Gtk::Main::quit()+21>:	mov    (%rdi),%rax
  PC (0x7f408d4822c5) ok
  source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
  destination "%rax" ok

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