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modify DKMS configuration file /etc/dkms/framework.conf

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Lower parallel compilation jobs to 1 if less than 2 GB RAM to avoid freezing of virtual machines.

`parallel_jobs=1`

This does not necessarily belong into security-misc, however likely
security-misc will need to modify `/etc/dkms/framework.conf` in the future to
enable kernel module signing.

https://forums.whonix.org/t/linux-kernel-runtime-guard-lkrg-linux-kernel-runtime-integrity-checking-and-exploit-detection/8477/26

https://forums.whonix.org/t/enforce-kernel-module-software-signature-verification-module-signing-disallow-kernel-module-loading-by-default/7880/58
This commit is contained in:
Patrick Schleizer 2021-04-29 11:14:30 -04:00
parent 3ba3b37187
commit e2afd00627
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1 changed files with 32 additions and 0 deletions
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32
etc/dkms/framework.conf.security-misc
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@ -30,3 +30,35 @@
## Script to sign modules during build, script is called with kernel version ## Script to sign modules during build, script is called with kernel version
## and module name ## and module name
# sign_tool="/etc/dkms/sign_helper.sh" # sign_tool="/etc/dkms/sign_helper.sh"
### BEGIN modifications by package security-misc ###
## original:
## https://github.com/dell/dkms/blob/master/dkms_framework.conf
## DKMS feature request:
## add /etc/dkms/framework.conf.d configuration file drop-in folder
## https://github.com/dell/dkms/issues/116
## Lower parallel compilation jobs to 1 if less than 2 GB RAM to avoid freezing
## of virtual machines.
##
## This does not necessarily belong into security-misc, however likely
## security-misc will need to modify /etc/dkms/framework.conf in the future to
## enable kernel module signing. See below.
##
## https://forums.whonix.org/t/linux-kernel-runtime-guard-lkrg-linux-kernel-runtime-integrity-checking-and-exploit-detection/8477/26
ENOUGH_RAM="1950"
total_ram="$(free -m | sed -n -e '/^Mem:/s/^[^0-9]*\([0-9]*\) .*/\1/p')"
if [ "$total_ram" -ge "$ENOUGH_RAM" ]; then
true "INFO: Enough RAM available. Not lowering compilation cores."
else
true "INFO: Not enough RAM available. Lowering compilation cores to 1."
parallel_jobs=1
fi
## https://forums.whonix.org/t/enforce-kernel-module-software-signature-verification-module-signing-disallow-kernel-module-loading-by-default/7880/58
## https://github.com/dell/dkms/blob/master/sign_helper.sh
#sign_tool="/etc/dkms/sign_helper.sh"
### END modifications by package security-misc ###