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out_of_memory

Member

Registered: 2025-10-26

Posts: 2

[SOLVED] firefox apparmor profile in complain mode causes GTK crash

Hi, I've been trying to create apparmor profiles for few apps but when i set firefox profile to complain mode it caused gtk warning and crashes when i try to save  something (ctrl s, which should show firefox file manager) -
there are no errors when the profile is disabled. I tried default firefox profile and one generated by aa-easyprof:

aa-easyprof /usr/lib/firefox/firefox
# vim:syntax=apparmor
# AppArmor policy for firefox
# ###AUTHOR###
# ###COPYRIGHT###
# ###COMMENT###

#include <tunables/global>

# No template variables specified

"/usr/lib/firefox/firefox" {
  #include <abstractions/base>

  # No abstractions specified

  # No policy groups specified

  # No read paths specified

  # No write paths specified
}

Why is setting profile complain mode even changing behavior of application?
It works fine with brave browser profile in complain mode
I also tried making librewolf profile (based on one I've made and which worked) but it outputs similar error

plasma-desktop
kernel: 6.17.5-arch1-1
kernel has command line options lsm=landlock,lockdown,yama,integrity,apparmor,bpf
apparmor enabled
auditd enabled
system updated
(and reinstalled - it didn't helped)

/usr/lib/firefox/firefox:

[GFX1-]: More than 2 GPUs detected via PCI, secondary GPU is arbitrary

[Parent 104676, Main Thread] WARNING: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.: 'glib warning', file /usr/src/debug/firefox/firefox-144.0/toolkit/xre/nsSigHandlers.cpp:201

(firefox:104676): Gtk-WARNING **: 16:17:39.035: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:../gtk/gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/scalable/status/image-missing.svg: Loader process exited early with status '1'Command:
 "bwrap" "--unshare-all" "--die-with-parent" "--chdir" "/" "--ro-bind" "/usr" "/usr" "--dev" "/dev" "--ro-bind-try" "/etc/ld.so.cache" "/etc/ld.so.cache" "--ro-bind-try" "/nix/store" "/nix/store" "--tmpfs" "/tmp-home" "--tmpfs" "/tmp-run" "--clearenv" "--setenv" "HOME" "/tmp-home" "--setenv" "XDG_RUNTIME_DIR" "/tmp-run" "--setenv" "XDG_RUNTIME_DIR" "/run/user/1001" "--symlink" "/usr/lib" "/lib" "--symlink" "/usr/lib" "/lib64" "--ro-bind-try" "/etc/fonts/conf.d" "/etc/fonts/conf.d" "--ro-bind-try" "/etc/fonts/fonts.conf" "/etc/fonts/fonts.conf" "--ro-bind-try" "/home/user/.cache/fontconfig" "/home/user/.cache/fontconfig" "--ro-bind-try" "/var/cache/fontconfig" "/var/cache/fontconfig" "--bind-try" "/home/user/.cache/glycin/usr/lib/glycin-loaders/2+/glycin-svg" "/home/user/.cache/glycin/usr/lib/glycin-loaders/2+/glycin-svg" "--setenv" "XDG_CACHE_HOME" "/home/user/.cache/glycin/usr/lib/glycin-loaders/2+/glycin-svg" "--seccomp" "144" "/usr/lib/glycin-loaders/2+/glycin-svg" "--dbus-fd" "143" (gdk-pixbuf-error-quark, 0)
Bail out! Gtk:ERROR:../gtk/gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Adwaita/scalable/status/image-missing.svg: Loader process exited early with status '1'Command:  "bwrap" "--unshare-all" "--die-with-parent" "--chdir" "/" "--ro-bind" "/usr" "/usr" "--dev" "/dev" "--ro-bind-try" "/etc/ld.so.cache" "/etc/ld.so.cache" "--ro-bind-try" "/nix/store" "/nix/store" "--tmpfs" "/tmp-home" "--tmpfs" "/tmp-run" "--clearenv" "--setenv" "HOME" "/tmp-home" "--setenv" "XDG_RUNTIME_DIR" "/tmp-run" "--setenv" "XDG_RUNTIME_DIR" "/run/user/1001" "--symlink" "/usr/lib" "/lib" "--symlink" "/usr/lib" "/lib64" "--ro-bind-try" "/etc/fonts/conf.d" "/etc/fonts/conf.d" "--ro-bind-try" "/etc/fonts/fonts.conf" "/etc/fonts/fonts.conf" "--ro-bind-try" "/home/user/.cache/fontconfig" "/home/user/.cache/fontconfig" "--ro-bind-try" "/var/cache/fontconfig" "/var/cache/fontconfig" "--bind-try" "/home/user/.cache/glycin/usr/lib/glycin-loaders/2+/glycin-svg" "/home/user/.cache/glycin/usr/lib/glycin-loaders/2+/glycin-svg" "--setenv" "XDG_CACHE_HOME" "/home/user/.cache/glycin/usr/lib/glycin-loaders/2+/glycin-svg" "--seccomp" "144" "/usr/lib/glycin-loaders/2+/glycin-svg" "--dbus-fd" "143" (gdk-pixbuf-error-quark, 0)
Redirecting call to abort() to mozalloc_abort

ExceptionHandler::GenerateDump attempting to generate:/home/user/.mozilla/firefox/4yejqjb6.default-release/minidumps/49e8a26b-88ea-b638-506c-1c000a357854.dmp
ExceptionHandler::GenerateDump cloned child 105123
ExceptionHandler::SendContinueSignalToChild sent continue signal to child
ExceptionHandler::WaitForContinueSignal waiting for continue signal...
ExceptionHandler::GenerateDump minidump generation succeeded
Exiting due to channel error.
Exiting due to channel error.
[user@test ~]$
(process:105124): Gtk-CRITICAL **: 16:17:40.313: gtk_window_set_default_icon: assertion 'GDK_IS_PIXBUF (icon)' failed

(crashreporter:105124): Gtk-WARNING **: 16:17:40.351: Could not load a pixbuf from /org/gtk/libgtk/theme/Adwaita/assets/check-symbolic.svg.
This may indicate that pixbuf loaders or the mime database could not be found.

(crashreporter:105124): GLib-GObject-CRITICAL **: 16:17:42.448: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

aa-status:

apparmor module is loaded.
168 profiles are loaded.
78 profiles are in enforce mode.
   /usr/lib/apache2/mpm-prefork/apache2
   /usr/lib/apache2/mpm-prefork/apache2//DEFAULT_URI
   /usr/lib/apache2/mpm-prefork/apache2//HANDLING_UNTRUSTED_INPUT
   /usr/lib/apache2/mpm-prefork/apache2//phpsysinfo
   apache2
   apache2//DEFAULT_URI
   apache2//HANDLING_UNTRUSTED_INPUT
   apache2//phpsysinfo
   avahi-daemon
   dnsmasq
   dnsmasq//libvirt_leaseshelper
   dovecot
   dovecot-anvil
   dovecot-auth
   dovecot-config
   dovecot-deliver
   dovecot-dict
   dovecot-director
   dovecot-doveadm-server
   dovecot-dovecot-auth
   dovecot-dovecot-lda
   dovecot-dovecot-lda//sendmail
   dovecot-imap
   dovecot-imap-login
   dovecot-lmtp
   dovecot-log
   dovecot-managesieve
   dovecot-managesieve-login
   dovecot-pop3
   dovecot-pop3-login
   dovecot-replicator
   dovecot-script-login
   dovecot-ssl-params
   dovecot-stats
   identd
   klogd
   lsb_release
   mdnsd
   nmbd
   nscd
   ntpd
   nvidia_modprobe
   nvidia_modprobe//kmod
   php-fpm
   ping
   plasmashell
   plasmashell//QtWebEngineProcess
   samba-bgqd
   samba-dcerpcd
   samba-rpcd
   samba-rpcd-classic
   samba-rpcd-spoolss
   sbuild
   sbuild-abort
   sbuild-adduser
   sbuild-apt
   sbuild-checkpackages
   sbuild-clean
   sbuild-createchroot
   sbuild-destroychroot
   sbuild-distupgrade
   sbuild-hold
   sbuild-shell
   sbuild-unhold
   sbuild-update
   sbuild-upgrade
   smbd
   smbldap-useradd
   smbldap-useradd///etc/init.d/nscd
   syslog-ng
   syslogd
   traceroute
   unix-chkpwd
   unprivileged_userns
   winbindd
   zgrep
   zgrep//helper
   zgrep//sed
13 profiles are in complain mode.
   /usr/lib/librewolf/librewolf
   Xorg
   firefox
   firefox//null-/usr/bin/bwrap
   firefox//null-/usr/lib/firefox/crashhelper
   firefox//null-/usr/lib/firefox/firefox
   firefox//null-/usr/lib/firefox/glxtest
   firefox//null-/usr/lib/firefox/pingsender
   firefox//null-/usr/lib/firefox/vaapitest
   transmission-cli
   transmission-daemon
   transmission-gtk
   transmission-qt
0 profiles are in prompt mode.
0 profiles are in kill mode.
77 profiles are in unconfined mode.
   1password
   Discord
   MongoDB Compass
   QtWebEngineProcess
   balena-etcher
   brave
   buildah
   busybox
   cam
   ch-checkns
   ch-run
   chrome
   chromium
   crun
   devhelp
   element-desktop
   epiphany
   evolution
   flatpak
   foliate
   geary
   github-desktop
   goldendict
   ipa_verify
   kchmviewer
   keybase
   lc-compliance
   libcamerify
   linux-sandbox
   loupe
   lxc-attach
   lxc-create
   lxc-destroy
   lxc-execute
   lxc-stop
   lxc-unshare
   lxc-usernsexec
   mmdebstrap
   msedge
   nautilus
   notepadqq
   obsidian
   opam
   opera
   pageedit
   podman
   polypane
   privacybrowser
   qcam
   qmapshack
   qutebrowser
   rootlesskit
   rpm
   rssguard
   runc
   scide
   signal-desktop
   slack
   slirp4netns
   steam
   stress-ng
   surfshark
   systemd-coredump
   thunderbird
   toybox
   trinity
   tup
   tuxedo-control-center
   userbindmount
   uwsgi-core
   vdens
   virtiofsd
   vivaldi-bin
   vpnns
   vscode
   wike
   wpcom
21 processes have profiles defined.
2 processes are in enforce mode.
   /usr/bin/plasmashell (1720) plasmashell
   /usr/bin/plasmashell (58412) plasmashell
1 processes are in complain mode.
   /usr/lib/librewolf/librewolf (77153)
0 processes are in prompt mode.
0 processes are in kill mode.
18 processes are unconfined but have a profile defined.
   /usr/lib/librewolf/librewolf (77208)
   /usr/lib/librewolf/librewolf (77264)
   /usr/lib/librewolf/librewolf (77312)
   /usr/lib/librewolf/librewolf (77322)
   /usr/lib/librewolf/librewolf (77410)
   /usr/lib/librewolf/librewolf (77484)
   /usr/lib/librewolf/librewolf (77537)
   /usr/lib/librewolf/librewolf (79600)
   /usr/lib/librewolf/librewolf (79979)
   /usr/lib/librewolf/librewolf (80940)
   /usr/lib/librewolf/librewolf (81881)
   /usr/lib/librewolf/librewolf (82185)
   /usr/lib/librewolf/librewolf (83333)
   /usr/lib/librewolf/librewolf (90400)
   /usr/lib/librewolf/librewolf (90657)
   /usr/lib/librewolf/librewolf (90715)
   /usr/lib/librewolf/librewolf (91926)
   /usr/lib/librewolf/librewolf (92116)
0 processes are in mixed mode.

journalct (fragment, after firefox crash)

Oct 26 16:21:38 test auditd[32444]: Audit daemon rotating log files
Oct 26 16:21:42 test systemd[1]: Starting Time & Date Service...
Oct 26 16:21:42 test systemd[1]: Started Time & Date Service.
Oct 26 16:21:42 test auditd[32444]: Audit daemon rotating log files
Oct 26 16:21:42 test rtkit-daemon[1509]: Supervising 14 threads of 7 processes of 2 users.
Oct 26 16:21:42 test rtkit-daemon[1509]: Supervising 14 threads of 7 processes of 2 users.
Oct 26 16:21:42 test rtkit-daemon[1509]: Supervising 14 threads of 7 processes of 2 users.
Oct 26 16:21:42 test rtkit-daemon[1509]: Supervising 14 threads of 7 processes of 2 users.
Oct 26 16:21:42 test rtkit-daemon[1509]: Successfully made thread 107784 of process 107546 owned by '1001' RT at priority 10.
Oct 26 16:21:42 test rtkit-daemon[1509]: Supervising 15 threads of 8 processes of 2 users.
Oct 26 16:21:43 test rtkit-daemon[1509]: Supervising 15 threads of 8 processes of 2 users.
Oct 26 16:21:43 test rtkit-daemon[1509]: Supervising 15 threads of 8 processes of 2 users.
Oct 26 16:21:43 test auditd[32444]: Audit daemon rotating log files
Oct 26 16:21:43 test auditd[32444]: Audit daemon rotating log files

also

Oct 26 16:18:43 test kernel: audit: audit_backlog=16000 > audit_backlog_limit=16000
Oct 26 16:18:43 test kernel: audit: audit_lost=10630 audit_rate_limit=0 audit_backlog_limit=16000
Oct 26 16:18:43 test kernel: audit: backlog limit exceeded

I mostly followed arch wiki when setting up apparmor so I'm still newbie

Last edited by out_of_memory (2025-10-31 13:02:02)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,877

Re: [SOLVED] firefox apparmor profile in complain mode causes GTK crash

https://bbs.archlinux.org/viewtopic.php?id=309784 and search the board for "glycin"

https://aur.archlinux.org/packages/librsvg-noglycin
https://aur.archlinux.org/packages/gdk-pixbuf2-noglycin

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out_of_memory

Member

Registered: 2025-10-26

Posts: 2

Re: [SOLVED] firefox apparmor profile in complain mode causes GTK crash

Thanks, after installing gdk-pixbuf2-noglycin firefox (and librewolf) works in complain and enforce mode, there are no GDK or bubblewrap errors.
Also,

sysctl -a | grep apparmor

returns

kernel.apparmor_display_secid_mode = 0
kernel.apparmor_restrict_unprivileged_unconfined = 0
kernel.unprivileged_userns_apparmor_policy = 1

so that's probably why bubblewrap didn't start - but bwrap-suid didn't solve this error

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 69,877

Re: [SOLVED] firefox apparmor profile in complain mode causes GTK crash

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

Probably migrate away from software that uses gdk-pixbuf2

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc