[GH-ISSUE #71] GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed #41

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opened 2026-05-05 04:53:01 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 04:53:01 -06:00

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Originally created by @BCOH on GitHub (Sep 29, 2015).
Original GitHub issue: https://github.com/netblue30/firejail/issues/71

I am getting a the following error when I try to start firejail and firefox. I have replaced the firefox firejail profile with one copied from the word-press site. The new profile resolved an error about line 2 in the profile. Now I am getting the error below. I have reinstalled Firejail 0.9.30_1_amd64.deb with no resolution.

$ firejail firefox
Reading profile /etc/firejail/firefox.profile
Parent pid 77, child pid 78
Child process initialized

(process:1): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

parent is shutting down, bye...
$

Thanks in advance

Brian

Originally created by @BCOH on GitHub (Sep 29, 2015). Original GitHub issue: https://github.com/netblue30/firejail/issues/71 I am getting a the following error when I try to start firejail and firefox. I have replaced the firefox firejail profile with one copied from the word-press site. The new profile resolved an error about line 2 in the profile. Now I am getting the error below. I have reinstalled Firejail 0.9.30_1_amd64.deb with no resolution. $ firejail firefox Reading profile /etc/firejail/firefox.profile Parent pid 77, child pid 78 Child process initialized (process:1): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed parent is shutting down, bye... $ Thanks in advance Brian

gitea-mirror closed this issue

2026-05-05 04:53:03 -06:00

gitea-mirror commented

2026-05-05 04:53:07 -06:00

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@netblue30 commented on GitHub (Sep 29, 2015):

I get "GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed" with or without firejail on my Debian machine. This is a Firefox problem. It is just a warning, disregard it.

parent is shutting down, bye...

This means Firefox went down. By default, Firefox browser uses a single process to handle multiple windows. When you start the browser, if another Firefox process is already running, the existing process opens a new tab or a new window, and the new process exits. Make sure Firefox is not already running when you start it in Firejail sandbox.

@netblue30 commented on GitHub (Sep 29, 2015): I get "GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed" with or without firejail on my Debian machine. This is a Firefox problem. It is just a warning, disregard it. > parent is shutting down, bye... This means Firefox went down. By default, Firefox browser uses a single process to handle multiple windows. When you start the browser, if another Firefox process is already running, the existing process opens a new tab or a new window, and the new process exits. Make sure Firefox is not already running when you start it in Firejail sandbox.

gitea-mirror referenced this issue

2026-05-05 10:02:58 -06:00

[PR #41] [MERGED] Support --enable-fatal-warnings in all Makefiles #3521

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Reference: github-starred/firejail#41

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