[Pkg-libvirt-maintainers] Bug#1004993: virt-viewer: severe memory leak

[Nathan Dorfman]

Package: virt-viewer
Version: 7.0-2
Severity: normal
X-Debbugs-Cc: ndorf at rtfm.net

Dear Maintainer,

Using the remote-viewer command to connect via SPICE to a VM running on the
local host:

remote-viewer spice://localhost:5901

VM and host are both running bullseye with the MATE desktop. There are two
1900x1200 monitors, and I'm using both of them in full-screen mode with
remote-viewer.

At first, memory usage, as reported by `ps -o rss`, is stable, staying under
800MB for the first 22 hours or so. After that, it begins to rise rapidly,
reaching 10GB another 13 hours or so later.

A gnuplot image of the RSS (in kilobytes) over time: 

https://rtfm.net/ndorf/remote-viewer-rss.png

-- System Information:
Debian Release: 11.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-11-amd64 (SMP w/8 CPU threads)
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages virt-viewer depends on:
ii  libatk1.0-0                 2.36.0-2
ii  libc6                       2.31-13+deb11u2
ii  libcairo-gobject2           1.16.0-5
ii  libcairo2                   1.16.0-5
ii  libgdk-pixbuf2.0-0          2.40.2-2
ii  libglib2.0-0                2.66.8-1
ii  libgovirt2                  0.3.7-2
ii  libgtk-3-0                  3.24.24-4
ii  libgtk-vnc-2.0-0            1.0.0-1
ii  libgvnc-1.0-0               1.0.0-1
ii  libpango-1.0-0              1.46.2-3
ii  libpangocairo-1.0-0         1.46.2-3
ii  librest-0.7-0               0.8.1-1.1
ii  libsoup2.4-1                2.72.0-2
ii  libspice-client-glib-2.0-8  0.39-1
ii  libspice-client-gtk-3.0-5   0.39-1
ii  libvirt-glib-1.0-0          3.0.0-1
ii  libvirt0                    7.0.0-3
ii  libxml2                     2.9.10+dfsg-6.7

virt-viewer recommends no packages.

Versions of packages virt-viewer suggests:
ii  netcat-openbsd [netcat]      1.217-3
ii  netcat-traditional [netcat]  1.10-46

-- no debconf information