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First boot: OpenRC hangs at 'mounting binary filesystem'
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FatFourtyTwo
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Joined: 10 Jul 2022
Posts: 21

PostPosted: Thu Aug 18, 2022 1:11 pm    Post subject: First boot: OpenRC hangs at 'mounting binary filesystem' Reply with quote

After following the installation steps in the AMD64 handbook (along with adding some packages I expected to need, mostly DE-related) I rebooted, got to grub, and saw OpenRC start up. But it started hanging at "Mounting misc binary format filesystem." After letting it sit there for 10-15 minutes and rebooting a few times, I can confirm that this is a consistent behavior.

I'm assuming that the message immediately before it has something to do with it: a yellow asterisk followed by "The binfmt-misc module needs to be loaded by the module service or built in,"

I'm using the Gentoo distribution kernel, specifically 5.15.59-gentoo-dist. I tried mounting everything, chrooting in, and "modprobe binfmt-misc" but for reasons I don't understand, despite following all handbook instructions for mounting filesystems and typing 'chroot /mnt/gentoo /bin/bash', it still tries to load the module from my host kernel rather than the Gentoo kernel.

Is there some way to either build the module if I don't have it for some reason, or get OpenRC to load it?
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pietinger
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Joined: 17 Oct 2006
Posts: 3996
Location: Bavaria

PostPosted: Thu Aug 18, 2022 4:55 pm    Post subject: Reply with quote

You will find this module here:
Code:
Executable file formats  --->
    [ ] Kernel support for MISC binaries

If you select <Help> you will find also:
Quote:
To use binfmt_misc, you will need to mount it:
mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc

... BUT ... why do you need it ? It is not recommended by security:
Quote:
# Easily confused by misconfigured userspace, keep off.
# CONFIG_BINFMT_MISC is not set

=> https://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project/Recommended_Settings

P.S.: If you dont know which runscript try this, please edit /etc/rc.conf and activate: "rc_interactive="YES"
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