Bug#1106294: kid3-qt: SIGSEGV with certain configuration file

Paul Gevers Thu, 22 May 2025 10:21:00 -0700

Package: kid3-qt
Version: 3.9.6-2+b2
Severity: normal

I've been trying to debug a fails-to-start for a friend. Quickly I suspected a corrupt configuration file. The configuration file doesn't seem to be corrupt, but I can reproducible SEGFAULT kid3-qt with the following configuration file (copied and reduced from my friends laptop)


paul@toba ~ $ cat .config/Kid3/Kid3.conf
[GUI]
PlayToolBarVisible=true

[MainWindow]
Geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x3\0\0\0\0\0\0\xff\xff\xff\xda\0\0\a\x7f\0\0\x3\xf1\0\0\0\0\0\0\0\0\0\0\0\x8e\0\0\x3\xf1\0\0\0\0\x2\0\0\0\a\x80\0\0\0\0\0\0\0\0\0\0\a\x7f\0\0\x3\xf1)
WindowState=@ByteArray(\0\0\0\xff\0\0\0\0\xfd\0\0\0\0\0\0\a\x80\0\0\x3v\0\0\0\x4\0\0\0\x4\0\0\0\b\0\0\0\b\xfc\0\0\0\x2\0\0\0\x2\0\0\0\x1\0\0\0\x16\0M\0\x61\0i\0n\0T\0o\0o\0l\0\x62\0\x61\0r\x1\0\0\0\0\xff\xff\xff\xff\0\0\0\0\0\0\0\0\0\0\0\x3\0\0\0\x1\0\0\0\x14\0K\0i\0\x64\0\x33\0P\0l\0\x61\0y\0\x65\0r\x1\0\0\0\0\xff\xff\xff\xff\0\0\0\0\0\0\0\0)

I started kid3-qt under gdb, see below. As this is very reproducible, let me know if you need more info.


Paul

paul@toba ~ $ gdb kid3-qt
GNU gdb (Debian 16.3-1) 16.3
Copyright (C) 2024 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from kid3-qt...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.debian.net>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit.

Reading symbols from /home/paul/.cache/debuginfod_client/f690704b62aa8da66e29b2d32a765fe39055c6f7/debuginfo...

(gdb) run
Starting program: /usr/bin/kid3-qt
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff09ff6c0 (LWP 226013)]
[New Thread 0x7fffecbf46c0 (LWP 226014)]
[New Thread 0x7fffe7fff6c0 (LWP 226015)]
[New Thread 0x7fffe49ff6c0 (LWP 226017)]
[New Thread 0x7fffde3ff6c0 (LWP 226018)]
[New Thread 0x7fffddbfe6c0 (LWP 226019)]
[New Thread 0x7fffdd3fd6c0 (LWP 226020)]
[New Thread 0x7fffdcbfc6c0 (LWP 226021)]
[New Thread 0x7fffbbfff6c0 (LWP 226022)]
[Thread 0x7fffbbfff6c0 (LWP 226022) exited]
[Thread 0x7fffdcbfc6c0 (LWP 226021) exited]
[Thread 0x7fffdd3fd6c0 (LWP 226020) exited]
[Thread 0x7fffddbfe6c0 (LWP 226019) exited]
[New Thread 0x7fffddbfe6c0 (LWP 226023)]

qt.multimedia.ffmpeg: Using Qt multimedia with FFmpeg version 7.1.1-1+b1 GPL version 2 or later

qt.multimedia.ffmpeg: Available HW decoding frameworks:

Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory

[New Thread 0x7fffdd3fd6c0 (LWP 226026)]
[New Thread 0x7fffdcbfc6c0 (LWP 226027)]
[Thread 0x7fffdcbfc6c0 (LWP 226027) exited]
[Thread 0x7fffdd3fd6c0 (LWP 226026) exited]
qt.multimedia.ffmpeg:      vaapi
qt.multimedia.ffmpeg:      vulkan
qt.multimedia.ffmpeg: Available HW encoding frameworks:
qt.multimedia.ffmpeg:      vaapi
qt.multimedia.ffmpeg:      vulkan
[New Thread 0x7fffdd3fd6c0 (LWP 226028)]

Thread 1 "kid3-qt" received signal SIGSEGV, Segmentation fault.

Download failed: Invalid argument. Continuing without source file ./obj-x86_64-linux-gnu/./src/widgets/widgets/qtoolbararealayout.cpp.

0x00007ffff73e1b7d in QToolBarAreaLayoutItem::skip (this=0x5555559bf550)
    at ./src/widgets/widgets/qtoolbararealayout.cpp:58

warning: 58 ./src/widgets/widgets/qtoolbararealayout.cpp: No such file or directory

(gdb) bt
#0  0x00007ffff73e1b7d in QToolBarAreaLayoutItem::skip (this=0x5555559bf550)
    at ./src/widgets/widgets/qtoolbararealayout.cpp:58
#1  QToolBarAreaLayoutLine::skip (this=0x555555cf77e0)
    at ./src/widgets/widgets/qtoolbararealayout.cpp:155
#2  QToolBarAreaLayoutInfo::sizeHint (this=0x555555846500)
    at ./src/widgets/widgets/qtoolbararealayout.cpp:188

#3 0x00007ffff7353f06 in QToolBarAreaLayout::fitLayout (this=0x555555846440)

    at ./src/widgets/widgets/qtoolbararealayout.cpp:609
#4  QToolBarAreaLayout::fitLayout (this=0x555555846440)
    at ./src/widgets/widgets/qtoolbararealayout.cpp:601
#5  QMainWindowLayoutState::fitLayout (this=0x555555846428)
    at ./src/widgets/widgets/qmainwindowlayout.cpp:870

#6 0x00007ffff7369b97 in QMainWindowLayout::setGeometry (this=0x5555558463a0, _r=...)

    at ./src/widgets/widgets/qmainwindowlayout.cpp:2349

#7 0x00007ffff71e2c29 in QLayoutPrivate::doResize (this=this@entry=0x555555846bc0)

    at ./src/widgets/kernel/qlayout.cpp:506
#8  0x00007ffff71e3403 in QLayout::activate (this=<optimized out>)
    at ./src/widgets/kernel/qlayout.cpp:1055

#9 0x00007ffff7200767 in QWidgetPrivate::setVisible (this=0x555555760bd0, visible=<optimized out>)

    at ./src/widgets/kernel/qwidget.cpp:8352
#10 0x000055555556a47c in main (argc=<optimized out>, argv=<optimized out>)
    at ./src/app/qt/mainqt.cpp:103

-- System Information:
Debian Release: 13.0
  APT prefers testing
  APT policy: (990, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.27-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_WARN

Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en

Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages kid3-qt depends on:
ii  kid3-core       3.9.6-2+b2
ii  libc6           2.41-7
ii  libgcc-s1       14.2.0-19
ii  libqt6core6t64  6.8.2+dfsg-6
ii  libqt6gui6      6.8.2+dfsg-6
ii  libqt6widgets6  6.8.2+dfsg-6
ii  libstdc++6      14.2.0-19

kid3-qt recommends no packages.

kid3-qt suggests no packages.

-- no debconf information

[GUI]
PlayToolBarVisible=true

[MainWindow]
Geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x3\0\0\0\0\0\0\xff\xff\xff\xda\0\0\a\x7f\0\0\x3\xf1\0\0\0\0\0\0\0\0\0\0\0\x8e\0\0\x3\xf1\0\0\0\0\x2\0\0\0\a\x80\0\0\0\0\0\0\0\0\0\0\a\x7f\0\0\x3\xf1)
WindowState=@ByteArray(\0\0\0\xff\0\0\0\0\xfd\0\0\0\0\0\0\a\x80\0\0\x3v\0\0\0\x4\0\0\0\x4\0\0\0\b\0\0\0\b\xfc\0\0\0\x2\0\0\0\x2\0\0\0\x1\0\0\0\x16\0M\0\x61\0i\0n\0T\0o\0o\0l\0\x62\0\x61\0r\x1\0\0\0\0\xff\xff\xff\xff\0\0\0\0\0\0\0\0\0\0\0\x3\0\0\0\x1\0\0\0\x14\0K\0i\0\x64\0\x33\0P\0l\0\x61\0y\0\x65\0r\x1\0\0\0\0\xff\xff\xff\xff\0\0\0\0\0\0\0\0)

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Bug#1106294: kid3-qt: SIGSEGV with certain configuration file

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