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fix(os): harden guest initramfs mounts and dm-verity corruption policy #1274

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Merged
kvinwang merged 1 commit into from
Sep 24, 2026
+6 −5
Merged

fix(os): harden guest initramfs mounts and dm-verity corruption policy #1274

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11 changes: 6 additions & 5 deletions os/yocto/layers/meta-dstack/recipes-core/images/dstack-initscript/init
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Original file line number Diff line number Diff line change
Expand Up @@ -68,12 +68,13 @@ main() {
mkdir -p /proc
mkdir -p /sys
mkdir -p /run
mount -t proc proc /proc
mount -t sysfs sysfs /sys
mount -t tmpfs tmpfs /run
# systemd keeps these mounts as-is, so apply its options here.
mount -t proc -o nosuid,nodev,noexec proc /proc
mount -t sysfs -o nosuid,nodev,noexec sysfs /sys
mount -t tmpfs -o nosuid,nodev,mode=0755 tmpfs /run

mkdir -p /dev
mount -t devtmpfs devtmpfs /dev
mount -t devtmpfs -o nosuid,strictatime,mode=0755 devtmpfs /dev

mkdir -p /dev/pts

Expand Down Expand Up @@ -107,7 +108,7 @@ main() {
log "missing dm-verity parameters; refusing to continue"
exit 1
fi
veritysetup open "${ROOT_DEV}" rootfs "${ROOT_DEV}" "${ROOT_HASH}" --hash-offset="${DATA_SIZE}"
veritysetup open "${ROOT_DEV}" rootfs "${ROOT_DEV}" "${ROOT_HASH}" --hash-offset="${DATA_SIZE}" --panic-on-corruption
log "mounting verified rootfs from /dev/mapper/rootfs"
mount -t squashfs /dev/mapper/rootfs ${ROOT_DIR}
mount_move_all sys proc dev run
Expand Down
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