Firejail: Limiting RAM with --rlimit-as

[JIGutierrez]

Hey, i'm trying to limit the memory usage of a program with firejail, however I'm getting an error:

firejail --rlimit-as=1000000 python path/to/file.py
Reading profile /etc/firejail/default.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-passwdmgr.inc
Reading profile /etc/firejail/disable-programs.inc

Parent pid 14956, child pid 14957
Error: cannot read /run/firejail/mnt/seccomp.protocol
Error: proc 14956 cannot sync with peer: unexpected EOF
Peer 14957 unexpectedly exited with status 1

I'm not sure if I did something wrong, couldn't find any info on this. Thanks in advance!

[chiraag-nataraj]

Hmm, that works for me, both with python specifically and other programs more generally. If you run firejail python path/to/file.py, does it work?

[JIGutierrez]

Yes, no problems running it.

firejail  python path/to/file.py
Reading profile /etc/firejail/default.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-passwdmgr.inc
Reading profile /etc/firejail/disable-programs.inc

** Note: you can use --noprofile to disable default.profile **

Parent pid 7638, child pid 7639
Child process initialized in 99.75 ms

Parent is shutting down, bye...

[rusty-snake]

With firejail --noprofile --rlimit-as=...?
Which distro? Which firejail version?

[smitsohu]

Did you try to increase the number? 1 MB is certainly too small, for instance I need 28 MB address space on my system to just run the python interpreter.

[JIGutierrez]

With firejail --noprofile --rlimit-as=...?
Which distro? Which firejail version?

firejail v0.9.52 (apt)
running elementary OS 5.0

Did you try to increase the number? 1 MB is certainly too small, for instance I need 28 MB address space on my system to just run the python interpreter.

This is so obvious that I didn't consider it, and it worked haha. Apparently forgot how python works. Thank you!