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crater: disable more kernel modules #1050

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Merged
ubiratansoares merged 1 commit into from
May 11, 2026
Merged

crater: disable more kernel modules #1050

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11 changes: 11 additions & 0 deletions terraform/crater/startup-script.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,17 @@ set -euo pipefail
echo "install algif_aead /bin/false" | sudo tee /etc/modprobe.d/disable-algif.conf
sudo rmmod algif_aead 2>/dev/null || true

# Workaroud for dirtyfrag
# https://github.com/V4bel/dirtyfrag/blob/master/README.md#mitigation
# https://ubuntu.com/blog/dirty-frag-linux-vulnerability-fixes-available
sudo tee /etc/modprobe.d/dirtyfrag.conf > /dev/null <<'EOF'
install esp4 /bin/false
install esp6 /bin/false
install rxrpc /bin/false
EOF
sudo rmmod esp4 esp6 rxrpc 2>/dev/null || true
sudo echo 3 > /proc/sys/vm/drop_caches || true

mkdir -p /opt
cd /opt
sudo apt update
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