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Bug#1101728: marked as done (obs-studio: obs coredumps with message "double free or corruption (out)" when starting virtual camera)

Your message dated Fri, 25 Apr 2025 19:38:33 +0000
with message-id <E1u8Osb-0064DO-4J@fasolo.debian.org>
and subject line Bug#1101728: fixed in obs-studio 30.2.3+dfsg-3
has caused the Debian Bug report #1101728,
regarding obs-studio: obs coredumps with message "double free or corruption (out)" when starting virtual camera
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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immediately.)


-- 
1101728: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1101728
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: obs-studio
Version: 30.2.3+dfsg-2+b5
Severity: important
X-Debbugs-Cc: debian@maat.me

Dear Maintainer,

Since around 1 week obs started to crash when starting the virtual camer (just
click on the button "start virtual camera" on the main interface).

The click on this button runs the commande  sudo modprobe v4l2loopback
exclusive_caps=1 card_label="OBS Virtual Camera"

At first click (for example after a reboot of if sudo rmmod   whas executed) a
password window pops up to type sudo password. If the password is correct obs
coredumps.

If obs was run from a console you can see this kind of message :
> double free or corruption (out)
> Abandon (core dumped)

After that running again obs and trying to start de virtual camera raises an
error but the virtual cam does not activate. And if obs was run from a console
you can see this kind of message :

> error: Failed to start streaming on '/dev/video6' (Invalid argument)
> warning: Failed to start virtual camera

I tried to run sudo rmmmod v4l2loopback then sudo sudo modprobe v4l2loopback
exclusive_caps=1 card_label="OBS Virtual Camera" then start obs : i fall into
the "failed to start" error message

I tried to run sudo rmmmod v4l2loopback then run obs then click start virtual
cam then type in a console sudo sudo modprobe v4l2loopback exclusive_caps=1
card_label="OBS Virtual Camera" : i fall into coredump case

I tried to run sudo rmmmod v4l2loopback then run obs then type in a console
sudo sudo modprobe v4l2loopback exclusive_caps=1 card_label="OBS Virtual
Camera" (without clicking on the button to start virtual cam) : i fall into
coredump case so clicking on the button does not have impact

This is really a problem because nowadays with video conferences the virtual
cam feature of OBS is one of its most used features.

Good luck to investigate this.
Maât


-- System Information:
Debian Release: trixie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.20-amd64 (SMP w/22 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE=fr:en_US
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages obs-studio depends on:
ii  libavcodec-extra61 [libavcodec61]  7:7.1.1-1+b1
ii  libavdevice61                      7:7.1.1-1+b1
ii  libavformat61                      7:7.1.1-1+b1
ii  libavutil59                        7:7.1.1-1+b1
ii  libc6                              2.41-6
ii  libcurl3t64-gnutls                 8.13.0~rc2-2
ii  libegl1                            1.7.0-1+b2
ii  libfontconfig1                     2.15.0-2.2
ii  libfreetype6                       2.13.3+dfsg-1
ii  libgcc-s1                          14.2.0-19
ii  libglx0                            1.7.0-1+b2
ii  libjansson4                        2.14-2+b3
ii  libluajit-5.1-2                    2.1.0+openresty20250117-2
ii  libmbedcrypto16                    3.6.2-3
ii  libmbedtls21                       3.6.2-3
ii  libmbedx509-7                      3.6.2-3
ii  libobs0t64                         30.2.3+dfsg-2+b5
ii  libopengl0                         1.7.0-1+b2
ii  libpci3                            1:3.13.0-2
ii  libpulse0                          17.0+dfsg1-2+b1
ii  libpython3.13                      3.13.2-2
ii  libqrcodegencpp1                   1.8.0-1.2+b2
ii  libqt6core6t64                     6.8.2+dfsg-5+b1
ii  libqt6dbus6                        6.8.2+dfsg-5+b1
ii  libqt6gui6                         6.8.2+dfsg-5+b1
ii  libqt6network6                     6.8.2+dfsg-5+b1
ii  libqt6svg6                         6.8.2-3
ii  libqt6widgets6                     6.8.2+dfsg-5+b1
ii  libqt6xml6                         6.8.2+dfsg-5+b1
ii  librist4                           0.2.11+dfsg-1
ii  libspeexdsp1                       1.2.1-3
ii  libsrt1.5-openssl                  1.5.4-1
ii  libstdc++6                         14.2.0-19
ii  libswscale8                        7:7.1.1-1+b1
ii  libudev1                           257.4-3
ii  libv4l-0t64                        1.28.1-1
ii  libva-drm2                         2.22.0-3
ii  libva2                             2.22.0-3
ii  libx11-6                           2:1.8.12-1
ii  libx264-164                        2:0.164.3108+git31e19f9-2+b1
ii  libxcb-composite0                  1.17.0-2+b1
ii  libxcb-randr0                      1.17.0-2+b1
ii  libxcb-shm0                        1.17.0-2+b1
ii  libxcb-xfixes0                     1.17.0-2+b1
ii  libxcb-xinerama0                   1.17.0-2+b1
ii  libxcb1                            1.17.0-2+b1
ii  libxkbcommon0                      1.7.0-2
ii  python3                            3.13.2-2
ii  python3.13                         3.13.2-2
ii  qt6-image-formats-plugins          6.8.2-3
ii  qt6-wayland                        6.8.2-3

Versions of packages obs-studio recommends:
ii  obs-plugins  30.2.3+dfsg-2+b5

Versions of packages obs-studio suggests:
ii  pkexec             126-2
ii  v4l2loopback-dkms  0.14.0-1

-- no debconf information

--- End Message ---
--- Begin Message --- 
Source: obs-studio
Source-Version: 30.2.3+dfsg-3
Done: IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org>

We believe that the bug you reported is fixed in the latest version of
obs-studio, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1101728@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org> (supplier of updated obs-studio package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Format: 1.8
Date: Fri, 25 Apr 2025 20:49:45 +0200
Source: obs-studio
Architecture: source
Version: 30.2.3+dfsg-3
Distribution: unstable
Urgency: medium
Maintainer: Debian Multimedia Maintainers <debian-multimedia@lists.debian.org>
Changed-By: IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org>
Closes: 1101351 1101728
Changes:
 obs-studio (30.2.3+dfsg-3) unstable; urgency=medium
 .
   * Backport stephematician's patch for v4l2loopback-0.14 compat.
     Thanks to Joao Eriberto Mota Filho <eriberto@debian.org>
     (Closes: #1101728, #1101351)
   * Make debian/latest the default packaging branch
   * Apply 'wrap-and-sort -ast'
   * Bump standards version to 4.7.2
Checksums-Sha1:
 a97b9358197767d7f634868ad8a53d9d22bea5cc 3503 obs-studio_30.2.3+dfsg-3.dsc
 38d72e7c2b196457ad9e64c0bb4e06424a2ae8c2 64108 obs-studio_30.2.3+dfsg-3.debian.tar.xz
Checksums-Sha256:
 41e7b7876a450c2f380160158eb5ee4d3429cfdc63f15d54c8ac79433044ee7b 3503 obs-studio_30.2.3+dfsg-3.dsc
 66cfcf51a64cd3579e0c8f678c08fb2dabdbf84cac4a8d92f5e209e14f98ea7c 64108 obs-studio_30.2.3+dfsg-3.debian.tar.xz
Files:
 e677028836ed48869dcb0ed000797a22 3503 video optional obs-studio_30.2.3+dfsg-3.dsc
 701d537d0b3bd90bc3bd08b424da68c9 64108 video optional obs-studio_30.2.3+dfsg-3.debian.tar.xz

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--- End Message ---
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