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[GH-ISSUE #3281] ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. #2059

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opened 2026-05-05 08:43:54 -06:00 by gitea-mirror · 7 comments
gitea-mirror commented 2026-05-05 08:43:54 -06:00
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Originally created by @Abdelilah-Majid on GitHub (Mar 18, 2020).
Original GitHub issue: https://github.com/netblue30/firejail/issues/3281

i do this in the terminal
firejail --seccomp --nonewprivs --private --private-tmp firefox
and i got this
Reading profile /etc/firejail/firefox.profile
Reading profile /etc/firejail/whitelist-usr-share-common.inc
Reading profile /etc/firejail/firefox-common.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-devel.inc
Reading profile /etc/firejail/disable-exec.inc
Reading profile /etc/firejail/disable-interpreters.inc
Reading profile /etc/firejail/disable-programs.inc
Reading profile /etc/firejail/whitelist-common.inc
Reading profile /etc/firejail/whitelist-var-common.inc
Parent pid 3786, child pid 3787
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set.
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Post-exec seccomp protector enabled
Seccomp list in: !chroot, check list: @default-keep, prelist: unknown,
Child process initialized in 441.51 ms
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.

(firefox:14): LIBDBUSMENU-GLIB-WARNING **: 16:15:36.073: Unable to get session bus: Could not connect: Permission denied
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
^C
Parent received signal 2, shutting down the child process...

Child received signal 2, shutting down the sandbox...

Originally created by @Abdelilah-Majid on GitHub (Mar 18, 2020). Original GitHub issue: https://github.com/netblue30/firejail/issues/3281 i do this in the terminal firejail --seccomp --nonewprivs --private --private-tmp firefox and i got this Reading profile /etc/firejail/firefox.profile Reading profile /etc/firejail/whitelist-usr-share-common.inc Reading profile /etc/firejail/firefox-common.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-devel.inc Reading profile /etc/firejail/disable-exec.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/whitelist-common.inc Reading profile /etc/firejail/whitelist-var-common.inc Parent pid 3786, child pid 3787 Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set. Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Post-exec seccomp protector enabled Seccomp list in: !chroot, check list: @default-keep, prelist: unknown, Child process initialized in 441.51 ms ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. (firefox:14): LIBDBUSMENU-GLIB-WARNING **: 16:15:36.073: Unable to get session bus: Could not connect: Permission denied ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ^C Parent received signal 2, shutting down the child process... Child received signal 2, shutting down the sandbox...
gitea-mirror commented 2026-05-05 08:43:57 -06:00
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@rusty-snake commented on GitHub (Mar 18, 2020):

what is your firejail version? which distro?.

anything broken or just warnings?

Have you appamor, may related to #2947.

Looks like a duplicate of #3226, can you confirm.

FYI: --seccomp --nonewprivs and --private-tmp are already set in the firefox profile.

<!-- gh-comment-id:600723543 --> @rusty-snake commented on GitHub (Mar 18, 2020): what is your firejail version? which distro?. anything broken or just warnings? Have you appamor, may related to #2947. ---- Looks like a duplicate of #3226, can you confirm. --- FYI: --seccomp --nonewprivs and --private-tmp are already set in the firefox profile.
gitea-mirror commented 2026-05-05 08:43:57 -06:00
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@Abdelilah-Majid commented on GitHub (Mar 20, 2020):

firejail version 0.9.62
distro: Ubuntu 18.04.4 LTS
first the firejail was lunching firfox but the sound was not working with firejail
and now it gives me this
Reading profile /etc/firejail/firefox.profile
Reading profile /etc/firejail/whitelist-usr-share-common.inc
Reading profile /etc/firejail/firefox-common.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-devel.inc
Reading profile /etc/firejail/disable-exec.inc
Reading profile /etc/firejail/disable-interpreters.inc
Reading profile /etc/firejail/disable-programs.inc
Reading profile /etc/firejail/whitelist-common.inc
Reading profile /etc/firejail/whitelist-var-common.inc
Parent pid 2921, child pid 2922
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set.
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Post-exec seccomp protector enabled
Seccomp list in: !chroot, check list: @default-keep, prelist: unknown,
Child process initialized in 2646.07 ms
ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.

Parent is shutting down, bye...

<!-- gh-comment-id:601680276 --> @Abdelilah-Majid commented on GitHub (Mar 20, 2020): firejail version 0.9.62 distro: Ubuntu 18.04.4 LTS first the firejail was lunching firfox but the sound was not working with firejail and now it gives me this Reading profile /etc/firejail/firefox.profile Reading profile /etc/firejail/whitelist-usr-share-common.inc Reading profile /etc/firejail/firefox-common.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-devel.inc Reading profile /etc/firejail/disable-exec.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/whitelist-common.inc Reading profile /etc/firejail/whitelist-var-common.inc Parent pid 2921, child pid 2922 Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set. Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Post-exec seccomp protector enabled Seccomp list in: !chroot, check list: @default-keep, prelist: unknown, Child process initialized in 2646.07 ms ERROR: ld.so: object '/run/firejail/lib/libpostexecseccomp.so' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. Parent is shutting down, bye...
gitea-mirror commented 2026-05-05 08:43:58 -06:00
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@Abdelilah-Majid commented on GitHub (Mar 20, 2020):

i desabled apparmor and got this in firejail:
Reading profile /etc/firejail/firefox.profile
Reading profile /etc/firejail/whitelist-usr-share-common.inc
Reading profile /etc/firejail/firefox-common.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-devel.inc
Reading profile /etc/firejail/disable-exec.inc
Reading profile /etc/firejail/disable-interpreters.inc
Reading profile /etc/firejail/disable-programs.inc
Reading profile /etc/firejail/whitelist-common.inc
Reading profile /etc/firejail/whitelist-var-common.inc
Parent pid 3213, child pid 3214
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set.
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Warning: cleaning all supplementary groups
Post-exec seccomp protector enabled
Seccomp list in: !chroot, check list: @default-keep, prelist: unknown,
Child process initialized in 1355.61 ms

Parent is shutting down, bye...

<!-- gh-comment-id:601683201 --> @Abdelilah-Majid commented on GitHub (Mar 20, 2020): i desabled apparmor and got this in firejail: Reading profile /etc/firejail/firefox.profile Reading profile /etc/firejail/whitelist-usr-share-common.inc Reading profile /etc/firejail/firefox-common.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-devel.inc Reading profile /etc/firejail/disable-exec.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/whitelist-common.inc Reading profile /etc/firejail/whitelist-var-common.inc Parent pid 3213, child pid 3214 Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set. Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Warning: cleaning all supplementary groups Post-exec seccomp protector enabled Seccomp list in: !chroot, check list: @default-keep, prelist: unknown, Child process initialized in 1355.61 ms Parent is shutting down, bye...
gitea-mirror commented 2026-05-05 08:43:59 -06:00
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@Abdelilah-Majid commented on GitHub (Mar 20, 2020):

i wan to know how to give access to libpostexecseccomp.so.

<!-- gh-comment-id:601685020 --> @Abdelilah-Majid commented on GitHub (Mar 20, 2020): i wan to know how to give access to libpostexecseccomp.so.
gitea-mirror commented 2026-05-05 08:44:01 -06:00
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@Abdelilah-Majid commented on GitHub (Mar 20, 2020):

sorry it works after removing apparmor but firefox does not connecting me to the web
when i ever wan to connect to google firefox tills me that it has been updated and you need to restart
i restart it and still gives me the same error
here is the consol:
###!!! [Parent][MessageChannel] Error: (msgtype=0x1E0057,name=PBrowser::Msg_UpdateEffects) Channel error: cannot send/recv

<!-- gh-comment-id:601688040 --> @Abdelilah-Majid commented on GitHub (Mar 20, 2020): sorry it works after removing apparmor but firefox does not connecting me to the web when i ever wan to connect to google firefox tills me that it has been updated and you need to restart i restart it and still gives me the same error here is the consol: ###!!! [Parent][MessageChannel] Error: (msgtype=0x1E0057,name=PBrowser::Msg_UpdateEffects) Channel error: cannot send/recv
gitea-mirror commented 2026-05-05 08:44:02 -06:00
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@rusty-snake commented on GitHub (Mar 21, 2020):

How do you install firefox?

<!-- gh-comment-id:602034696 --> @rusty-snake commented on GitHub (Mar 21, 2020): How do you install firefox?
gitea-mirror commented 2026-05-05 08:44:03 -06:00
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@rusty-snake commented on GitHub (Jun 4, 2020):

I'm closing here due to inactivity, please fell free to reopen if you still have this issue.

<!-- gh-comment-id:638795262 --> @rusty-snake commented on GitHub (Jun 4, 2020): I'm closing here due to inactivity, please fell free to reopen if you still have this issue.
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