ohhhhhhhhhhh (exclude linux-extra-rootfs.img build artifact)
This commit is contained in:
Linehu
@@ -0,0 +1,831 @@
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#!/usr/local/bin/utsm_run
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# Start Plasma on the UTSM virtio-gpu 2D device.
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# musl busybox.static PUSH-faults at address 0 (leaked SHSTK). Use bash.
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# Wayland/KWin DRM does not issue SET_SCANOUT, so the host never sees a
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# frame. Xfbdev/Xorg is the path that actually lights scanout; Plasma
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# then runs as an X11 client on DISPLAY=:0.
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printf '[deshab-kde] interpreter alive inside=pre\n' >/dev/kmsg 2>/dev/null || true
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# Persist must not abort the session. Do not remount / rw: that is vdb
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# (Arch rootfs) and dirtying it yields ext4 checksum errors.
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# Skip the probe when already inside the extra-rootfs chroot.
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set +e
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INSIDE=0
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for arg in "$@"; do
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if [ "$arg" = "--inside" ]; then
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INSIDE=1
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fi
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done
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if [ "$INSIDE" -eq 0 ] && [ ! -e /etc/deshab-kde-root ]; then
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printf '[deshab-kde] persist: probe\n' >/dev/kmsg 2>/dev/null || true
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grep -E 'persist|vdc' /proc/mounts >/dev/kmsg 2>/dev/null || true
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if [ -x /mnt/persist/usr/bin/startplasma-x11 ] || \
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[ -x /mnt/persist/usr/bin/startplasma-wayland ]; then
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printf '[deshab-kde] persist already has startplasma\n' >/dev/kmsg 2>/dev/null || true
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elif grep -q ' /mnt/persist ' /proc/mounts 2>/dev/null; then
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printf '[deshab-kde] persist mounted but startplasma missing\n' >/dev/kmsg 2>/dev/null || true
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else
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printf '[deshab-kde] remounting /dev/vdc ro on /mnt/persist\n' >/dev/kmsg 2>/dev/null || true
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mkdir -p /mnt/persist 2>/dev/null || true
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mount -t ext4 -o ro,noload /dev/vdc /mnt/persist
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if [ ! -x /mnt/persist/usr/bin/startplasma-x11 ]; then
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src=$(awk '$1 == "/dev/vdc" { print $2; exit }' /proc/mounts)
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if [ -n "$src" ] && [ "$src" != /mnt/persist ]; then
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printf '[deshab-kde] bind %s -> /mnt/persist\n' "$src" >/dev/kmsg 2>/dev/null || true
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mount -o bind "$src" /mnt/persist 2>/dev/null || true
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fi
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fi
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if [ ! -x /mnt/persist/usr/bin/startplasma-x11 ]; then
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printf '[deshab-kde] persist remount failed\n' >/dev/kmsg 2>/dev/null || true
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fi
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fi
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printf '[deshab-kde] persist check done\n' >/dev/kmsg 2>/dev/null || true
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fi
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set +e
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KDE_ROOT="${DESHAB_KDE_ROOT:-/mnt/persist}"
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SESSION_USER="${DESHAB_KDE_USER:-deshab}"
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SOFTWARE_RENDERING="${DESHAB_KDE_SOFTWARE_RENDERING:-1}"
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SEATD_PID=""
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XFBDEV_PID=""
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printf '[deshab-kde] interpreter alive inside=%s\n' "$INSIDE" > /dev/kmsg 2>/dev/null || true
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log() {
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printf '[deshab-kde] %s\n' "$*" >>"$LOG_FILE" 2>/dev/null || true
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printf '[deshab-kde] %s\n' "$*" > /dev/kmsg 2>/dev/null || true
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printf '[deshab-kde] %s\n' "$*" > /dev/console 2>/dev/null || true
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printf '[deshab-kde] %s\n' "$*" >&2
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}
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# /dev/kmsg drops bursts. Always also hit console via log().
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dump_file() {
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local f="$1" max="${2:-40}" n=0
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if [ ! -f "$f" ]; then
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log "missing $f"
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return 1
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fi
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log "file $f bytes=$(wc -c < "$f" 2>/dev/null || echo 0)"
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while IFS= read -r line || [ -n "$line" ]; do
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n=$((n + 1))
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[ "$n" -gt "$max" ] && break
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log "$f:$line"
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done < "$f"
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return 0
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}
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cleanup_session() {
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set +e
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if [ -n "$SEATD_PID" ]; then
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kill "$SEATD_PID" 2>/dev/null || true
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wait "$SEATD_PID" 2>/dev/null || true
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fi
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if [ -n "$XFBDEV_PID" ]; then
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kill "$XFBDEV_PID" 2>/dev/null || true
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wait "$XFBDEV_PID" 2>/dev/null || true
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fi
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# persist /bin/umount SIGSEGVs in ld.so; overlay is discarded on reboot.
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}
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trap cleanup_session EXIT INT TERM
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start_xfbdev() {
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if [ -S /tmp/.X11-unix/X0 ]; then
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log "X socket already present"
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return 0
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fi
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if ! command -v Xfbdev >/dev/null 2>&1; then
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log "Xfbdev not on guest root; Xorg inside the KDE chroot will be used"
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return 1
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fi
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rm -f /tmp/.X0-lock /tmp/.X11-unix/X0
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mkdir -p /tmp/.X11-unix
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chmod 1777 /tmp /tmp/.X11-unix
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log "starting Xfbdev :0 1024x768"
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Xfbdev :0 -geometry 1024x768 -depth 32 >/dev/null 2>&1 &
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XFBDEV_PID=$!
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i=0
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while [ "$i" -lt 50 ]; do
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if [ -S /tmp/.X11-unix/X0 ]; then
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log "Xfbdev socket ready"
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return 0
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fi
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sleep 0.1
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i=$((i + 1))
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done
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log "WARNING: Xfbdev socket not seen yet, continuing"
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return 0
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}
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if [ "$INSIDE" -eq 0 ] && [ ! -e /etc/deshab-kde-root ]; then
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LOG_FILE="$KDE_ROOT/var/log/deshab-kde-session.log"
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if [ "$(id -u)" -ne 0 ]; then
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echo "[deshab-kde] ERROR: entering the KDE chroot requires root" >&2
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exit 1
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fi
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printf '[deshab-kde] looking for startplasma in %s\n' "$KDE_ROOT" >/dev/kmsg 2>/dev/null || true
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set +e
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if [ ! -x "$KDE_ROOT/usr/bin/startplasma-x11" ] && \
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[ ! -x "$KDE_ROOT/usr/bin/startplasma-wayland" ]; then
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echo "[deshab-kde] ERROR: no prepared KDE root at $KDE_ROOT" >&2
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printf '[deshab-kde] ERROR: no startplasma at %s\n' "$KDE_ROOT" >/dev/kmsg 2>/dev/null || true
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exit 1
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fi
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# persist ld.so SIGSEGVs at 0 (SHSTK). vdb mount/libmount inodes fail
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# checksum at runtime. Use the static helper that already matches the
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# working daemon toolchain.
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BINDMOUNT=/usr/local/bin/utsm_bindmount
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PERSIST_LD=""
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for ld in \
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"$KDE_ROOT/usr/lib/ld-linux-x86-64.so.2" \
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"$KDE_ROOT/lib64/ld-linux-x86-64.so.2" \
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"$KDE_ROOT/lib/ld-linux-x86-64.so.2"; do
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if [ -x "$ld" ]; then
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PERSIST_LD="$ld"
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break
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fi
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done
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PERSIST_LIBS="$KDE_ROOT/usr/lib:$KDE_ROOT/lib:$KDE_ROOT/usr/lib64"
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kde_mount() {
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if [ -x "$BINDMOUNT" ]; then
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if [ "$1" = --bind ] && [ -n "$2" ] && [ -n "$3" ]; then
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"$BINDMOUNT" bind "$2" "$3"
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return $?
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fi
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if [ "$1" = --make-slave ] && [ -n "$2" ]; then
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"$BINDMOUNT" slave "$2"
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return $?
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fi
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if [ "$1" = -o ] && [ "$2" = bind ] && [ -n "$3" ] && [ -n "$4" ]; then
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"$BINDMOUNT" bind "$3" "$4"
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return $?
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fi
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if [ "$1" = -t ] && [ "$3" = -o ] && [ -n "$5" ] && [ -n "$6" ]; then
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"$BINDMOUNT" fstype "$2" "$5" "$6" "$4"
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return $?
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fi
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if [ "$1" = -t ] && [ -n "$2" ] && [ -n "$3" ] && [ -n "$4" ]; then
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"$BINDMOUNT" fstype "$2" "$3" "$4"
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return $?
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fi
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fi
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/bin/mount "$@"
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}
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log "bindmount=$BINDMOUNT persist_ld=$PERSIST_LD"
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# Do not chmod persist bind targets: overlay copy-up of /dev then
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# makes MS_BIND fail. Do not put vdb /usr/bin first on PATH while
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# LD_LIBRARY_PATH is persist (vdb ls SIGSEGVs in ld.so).
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mkdir -p "$KDE_ROOT/dev" "$KDE_ROOT/proc" "$KDE_ROOT/sys" \
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"$KDE_ROOT/run" "$KDE_ROOT/tmp" "$KDE_ROOT/var/log"
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touch "$LOG_FILE"
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rm -f /tmp/deshab-native
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log "entering KDE root at $KDE_ROOT"
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start_xfbdev || true
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# persist /dev /proc /sys /run are 0555 placeholders. rbind of /dev
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# fails here (stderr is /dev/null from the async daemon). Use bind,
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# chmod first, and keep going with a seeded /dev if needed.
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bind_guest_fs() {
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local name="$1"
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local src="/$name"
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local target="$KDE_ROOT/$name"
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local err=""
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if [ -L "$target" ]; then
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rm -f "$target"
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fi
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mkdir -p "$target" 2>/dev/null || true
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if grep -q " $target " /proc/mounts 2>/dev/null; then
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return 0
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fi
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if [ ! -d "$src" ]; then
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log "WARNING: $src missing"
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return 1
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fi
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err=$(kde_mount --bind "$src" "$target" 2>&1)
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if [ $? -eq 0 ]; then
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kde_mount --make-slave "$target" 2>/dev/null || true
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log "bound $src -> $target"
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return 0
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fi
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err=$(kde_mount -o bind "$src" "$target" 2>&1)
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if [ $? -eq 0 ]; then
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log "bound -o bind $src -> $target"
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return 0
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fi
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log "ERROR: bind $src -> $target failed: $err"
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log "bind diag src=$(ls -ld "$src" 2>/dev/null) tgt=$(ls -ld "$target" 2>/dev/null)"
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return 1
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}
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seed_dev() {
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local target="$KDE_ROOT/dev"
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local n
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mkdir -p "$target"
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chmod 0755 "$target" 2>/dev/null || true
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for n in null zero urandom random tty tty0 console kmsg fb0; do
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if [ -e "/dev/$n" ] && [ ! -e "$target/$n" ]; then
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cp -a "/dev/$n" "$target/$n" 2>/dev/null || true
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fi
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done
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for n in dri input pts shm; do
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if [ -d "/dev/$n" ]; then
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mkdir -p "$target/$n"
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chmod 0755 "$target/$n" 2>/dev/null || true
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if ! grep -q " $target/$n " /proc/mounts 2>/dev/null; then
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kde_mount --bind "/dev/$n" "$target/$n" 2>/dev/null || \
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kde_mount -o bind "/dev/$n" "$target/$n" 2>/dev/null || true
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fi
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fi
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done
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if [ ! -d "$target/pts" ]; then
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mkdir -p "$target/pts"
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kde_mount -t devpts devpts "$target/pts" 2>/dev/null || true
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fi
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}
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for fs in dev proc sys; do
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if ! bind_guest_fs "$fs"; then
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if [ "$fs" = dev ]; then
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log "seeding /dev into the KDE root after bind failure"
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seed_dev
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else
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log "ERROR: could not bind /$fs into the KDE root"
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exit 1
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fi
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fi
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done
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# vdb is mounted ro. Binding its /tmp or /run makes those
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# directories read-only, so Xorg cannot create /tmp/.X11-unix
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# and seatd cannot create /run/seatd.sock.
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# BUG-XORG-SEGV 最终方案：不再让 chroot 自启 Xorg（vdb ld.so + persist
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# 库组合在 ld.so 0x15ded NULL+8 segfault，即使换 ld.so/换库集都复现）。
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# 改为把宿主 /tmp、/run bind 进 chroot：native 桌面的 Xorg 套接字
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# /tmp/.X11-unix/X0 与 seatd.sock 直接可见，inner session 检测到
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# socket 已存在就跳过自启 Xorg，Plasma 作为 X11 客户端直连活着的
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# X server（-ac 无鉴权，协议层互通，与 Xorg 的加载器问题无关）。
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for fs in tmp run; do
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mkdir -p "$KDE_ROOT/$fs"
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if kde_mount --bind "/$fs" "$KDE_ROOT/$fs"; then
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log "bound host /$fs -> $KDE_ROOT/$fs"
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elif kde_mount -t tmpfs tmpfs "$KDE_ROOT/$fs"; then
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log "fallback tmpfs on $KDE_ROOT/$fs"
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else
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log "ERROR: mount $KDE_ROOT/$fs failed"
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fi
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done
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chmod 1777 "$KDE_ROOT/tmp" 2>/dev/null || true
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mkdir -p "$KDE_ROOT/tmp/.X11-unix" "$KDE_ROOT/run/user"
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chmod 1777 "$KDE_ROOT/tmp/.X11-unix" 2>/dev/null || true
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if [ -d /dev/pts ] && [ -d "$KDE_ROOT/dev/pts" ] && \
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! grep -q " $KDE_ROOT/dev/pts " /proc/mounts 2>/dev/null; then
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kde_mount --bind /dev/pts "$KDE_ROOT/dev/pts" 2>/dev/null || \
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kde_mount -t devpts devpts "$KDE_ROOT/dev/pts" 2>/dev/null || true
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fi
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mkdir -p "$KDE_ROOT/home/$SESSION_USER/Desktop"
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mkdir -p /mnt/deshab-esp
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if ! grep -q ' /mnt/deshab-esp ' /proc/mounts 2>/dev/null; then
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if [ -e /dev/disk/by-label/DESHABBOOT ]; then
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kde_mount -t vfat -o rw,utf8,shortname=mixed \
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/dev/disk/by-label/DESHABBOOT /mnt/deshab-esp 2>/dev/null || \
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kde_mount -t vfat -o rw /dev/disk/by-label/DESHABBOOT /mnt/deshab-esp \
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2>/dev/null || true
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fi
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if ! grep -q ' /mnt/deshab-esp ' /proc/mounts 2>/dev/null; then
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for d in /dev/vda1 /dev/sda1 /dev/vda /dev/sda; do
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[ -b "$d" ] || continue
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if kde_mount -t vfat -o rw,utf8,shortname=mixed "$d" /mnt/deshab-esp 2>/dev/null; then
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break
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fi
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done
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fi
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fi
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if [ -d /mnt/deshab-esp/user/desktop ]; then
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if ! grep -q " $KDE_ROOT/home/$SESSION_USER/Desktop " /proc/mounts 2>/dev/null; then
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kde_mount --bind /mnt/deshab-esp/user/desktop \
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"$KDE_ROOT/home/$SESSION_USER/Desktop" 2>/dev/null || true
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fi
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log "Plasma Desktop bound to ESP user/desktop"
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fi
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if [ ! -d "$KDE_ROOT/home/$SESSION_USER/Desktop" ] || \
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[ -z "$(ls -A "$KDE_ROOT/home/$SESSION_USER/Desktop" 2>/dev/null)" ]; then
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if [ -d /usr/local/share/deshab-desktop ]; then
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cp -a /usr/local/share/deshab-desktop/. \
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"$KDE_ROOT/home/$SESSION_USER/Desktop/" 2>/dev/null || true
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elif [ -d "$KDE_ROOT/usr/local/share/deshab-desktop" ]; then
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cp -a "$KDE_ROOT/usr/local/share/deshab-desktop/." \
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"$KDE_ROOT/home/$SESSION_USER/Desktop/" 2>/dev/null || true
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fi
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log "Plasma Desktop filled from deshab-desktop copy (ESP bind unavailable)"
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fi
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chown -R "$SESSION_USER:$SESSION_USER" \
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"$KDE_ROOT/home/$SESSION_USER/Desktop" 2>/dev/null || true
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set +e
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export DESHAB_KDE_USER="$SESSION_USER"
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export DESHAB_KDE_SOFTWARE_RENDERING="$SOFTWARE_RENDERING"
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export DISPLAY=:0
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export GLIBC_TUNABLES=glibc.cpu.hwcaps=-IBT,-SHSTK,-AVX,-AVX2,-AVX512F
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# persist ld.so SIGSEGVs at NULL+8 (offset 0x15ded) on Xorg/dbus/umount.
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# persist bash survived that loader; other bins did not. Bind vdb's
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# interpreter over persist's so new execs match the working pre-chroot
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# path (vdb ld.so + persist libraries). Do not overlay vdb libc.
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VDB_LD=/lib64/ld-linux-x86-64.so.2
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mkdir -p "$KDE_ROOT/usr/local/bin" "$KDE_ROOT/usr/local/lib"
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if [ -n "$PERSIST_LD" ]; then
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cp -f "$PERSIST_LD" "$KDE_ROOT/usr/local/lib/ld-persist.so" 2>/dev/null || true
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chmod 0755 "$KDE_ROOT/usr/local/lib/ld-persist.so" 2>/dev/null || true
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log "saved persist ld.so to /usr/local/lib/ld-persist.so"
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fi
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if [ -x /usr/local/bin/deshab-kde-session ]; then
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cp -f /usr/local/bin/deshab-kde-session \
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"$KDE_ROOT/usr/local/bin/deshab-kde-session" 2>/dev/null || true
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chmod 0755 "$KDE_ROOT/usr/local/bin/deshab-kde-session" 2>/dev/null || true
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log "copied session onto persist overlay"
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fi
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if [ -x /usr/local/bin/utsm_bindmount ]; then
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cp -f /usr/local/bin/utsm_bindmount \
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"$KDE_ROOT/usr/local/bin/utsm_bindmount" 2>/dev/null || true
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chmod 0755 "$KDE_ROOT/usr/local/bin/utsm_bindmount" 2>/dev/null || true
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||||
fi
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if [ -x /usr/local/bin/utsm_run ]; then
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cp -f /usr/local/bin/utsm_run \
|
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"$KDE_ROOT/usr/local/bin/utsm_run" 2>/dev/null || true
|
||||
chmod 0755 "$KDE_ROOT/usr/local/bin/utsm_run" 2>/dev/null || true
|
||||
fi
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if [ -x /usr/local/lib/Xorg.good ]; then
|
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if kde_mount --bind /usr/local/lib/Xorg.good "$KDE_ROOT/usr/lib/Xorg"; then
|
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log "bound vdb Xorg.good over persist /usr/lib/Xorg"
|
||||
fi
|
||||
fi
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||||
if [ -d /usr/local/lib/xorg-libs ]; then
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||||
mkdir -p "$KDE_ROOT/usr/local/lib/xorg-libs"
|
||||
if kde_mount --bind /usr/local/lib/xorg-libs "$KDE_ROOT/usr/local/lib/xorg-libs"; then
|
||||
log "bound xorg-libs ($(ls /usr/local/lib/xorg-libs | wc -l))"
|
||||
fi
|
||||
fi
|
||||
# plasma-libs: Qt6/KF6 等新增好库。只给 Plasma 的 ldpath 用——Xorg 的
|
||||
# 加载环境保持 12:18 验证过的纯 xorg-libs 集（扩大 overlay 会让
|
||||
# vdb ld.so 在加载期 segfault，见 /tmp/xorg.err 为空的 rc=139）。
|
||||
if [ -d /usr/local/lib/plasma-libs ]; then
|
||||
mkdir -p "$KDE_ROOT/usr/local/lib/plasma-libs"
|
||||
if kde_mount --bind /usr/local/lib/plasma-libs "$KDE_ROOT/usr/local/lib/plasma-libs"; then
|
||||
log "bound plasma-libs ($(ls /usr/local/lib/plasma-libs | wc -l))"
|
||||
fi
|
||||
fi
|
||||
# BUG-XORG-SEGV 根修：persist /usr/lib 有 140 个损坏库（ld.so 解析即
|
||||
# NULL+8 segfault）。repair.txt（由注入管线生成）把每个坏实体的好副
|
||||
# 本 bind 到 persist 路径上，ld.so 回落解析时命中的也全是好文件。
|
||||
if [ -f /usr/local/lib/xorg-libs/repair.txt ] && [ -x "$BINDMOUNT" ]; then
|
||||
ok=0; fail=0
|
||||
while IFS='|' read -r src dst; do
|
||||
[ -z "$src" ] && continue
|
||||
# bindmount 在 chroot 外执行：src/dst 都要加 $KDE_ROOT 前缀
|
||||
if [ -e "$KDE_ROOT$src" ] && kde_mount --bind "$KDE_ROOT$src" "$KDE_ROOT$dst" 2>/dev/null; then
|
||||
ok=$((ok + 1))
|
||||
else
|
||||
fail=$((fail + 1))
|
||||
fi
|
||||
done < /usr/local/lib/xorg-libs/repair.txt
|
||||
log "persist repair binds: ok=$ok fail=$fail"
|
||||
fi
|
||||
if [ -f /usr/local/lib/xorg/modules/drivers/modesetting_drv.so ]; then
|
||||
mkdir -p "$KDE_ROOT/usr/local/lib/xorg/modules/drivers"
|
||||
if kde_mount --bind /usr/local/lib/xorg/modules \
|
||||
"$KDE_ROOT/usr/local/lib/xorg/modules"; then
|
||||
log "bound xorg modules"
|
||||
fi
|
||||
fi
|
||||
# BUG-XORG-SEGV 复盘：0x15ded 崩点=persist ld.so 已知 bug；12:18 好运行
|
||||
# 中 vdb-ld bind 处于激活态（umount EBUSY=未卸载）且 Xorg 存活 → bind
|
||||
# 是必需的。之前"过时论"判断有误，恢复默认启用。
|
||||
if [ -x "$VDB_LD" ]; then
|
||||
for dest in \
|
||||
"$KDE_ROOT/lib64/ld-linux-x86-64.so.2" \
|
||||
"$KDE_ROOT/usr/lib/ld-linux-x86-64.so.2" \
|
||||
"$KDE_ROOT/lib/ld-linux-x86-64.so.2"; do
|
||||
[ -e "$dest" ] || [ -L "$dest" ] || continue
|
||||
if kde_mount --bind "$VDB_LD" "$dest"; then
|
||||
log "bound vdb ld.so over $dest"
|
||||
elif cp -f "$VDB_LD" "$dest"; then
|
||||
log "copied vdb ld.so over $dest"
|
||||
fi
|
||||
done
|
||||
fi
|
||||
# BUG-CHROOT-127: 引导期 chroot 的 persist bash 必须只用 persist 自带
|
||||
# 库。宿主侧继承的 LD_LIBRARY_PATH（xorg-libs overlay）会让 chroot 内
|
||||
# 加载器优先吃 overlay 库，其中部分与 persist glibc 版本错位 → bash
|
||||
# 加载失败 → status 127。Xorg/Plasma 阶段会显式重新设置该变量。
|
||||
log "bootstrap ldpath=${LD_LIBRARY_PATH:-unset}"
|
||||
unset LD_LIBRARY_PATH
|
||||
if [ -x "$KDE_ROOT/usr/bin/bash" ]; then
|
||||
log "preflight persist bash"
|
||||
"$BINDMOUNT" chroot "$KDE_ROOT" /usr/bin/bash -c \
|
||||
'printf "[deshab-kde] persist-bash-ok\n" >/dev/kmsg' || \
|
||||
log "WARNING: persist bash preflight failed"
|
||||
fi
|
||||
if [ -x "$BINDMOUNT" ]; then
|
||||
log "chroot via utsm_bindmount bash -c"
|
||||
"$BINDMOUNT" chroot "$KDE_ROOT" /usr/bin/bash -c \
|
||||
'printf "[deshab-kde] inside-bash\n" >/dev/kmsg; ls -l /usr/local/bin/deshab-kde-session /usr/bin/bash /etc/deshab-kde-root /usr/bin/startplasma-x11 >/dev/kmsg 2>&1; exec /usr/local/bin/deshab-kde-session --inside'
|
||||
status=$?
|
||||
else
|
||||
chroot "$KDE_ROOT" /usr/bin/bash \
|
||||
/usr/local/bin/deshab-kde-session --inside
|
||||
status=$?
|
||||
fi
|
||||
set -e
|
||||
log "chroot session exited with status $status"
|
||||
exit "$status"
|
||||
fi
|
||||
|
||||
LOG_FILE="/var/log/deshab-kde-session.log"
|
||||
set +e
|
||||
touch "$LOG_FILE"
|
||||
export GLIBC_TUNABLES=glibc.cpu.hwcaps=-IBT,-SHSTK,-AVX,-AVX2,-AVX512F
|
||||
export LIBSEAT_BACKEND=seatd
|
||||
export XDG_SEAT=seat0
|
||||
export XDG_VTNR=1
|
||||
log "inside setup begin"
|
||||
# Xorg 段错误取证：内核打印 fatal signal 现场（RIP 所在库+偏移），
|
||||
# 早于 Plasma 阶段的同名设置——Xorg 启动在先。
|
||||
echo 1 >/proc/sys/kernel/print-fatal-signals 2>/dev/null || true
|
||||
if ! touch /tmp/.deshab-w 2>/dev/null; then
|
||||
log "WARNING: /tmp not writable, mounting tmpfs"
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount fstype tmpfs tmpfs /tmp || true
|
||||
fi
|
||||
mkdir -p /tmp/.X11-unix
|
||||
chmod 1777 /tmp /tmp/.X11-unix 2>/dev/null || true
|
||||
fi
|
||||
if ! touch /run/.deshab-w 2>/dev/null; then
|
||||
log "WARNING: /run not writable, mounting tmpfs"
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount fstype tmpfs tmpfs /run || true
|
||||
fi
|
||||
fi
|
||||
log "tmp_w=$([ -w /tmp ] && echo y || echo n) run_w=$([ -w /run ] && echo y || echo n)"
|
||||
if [ "$(id -u)" -ne 0 ]; then
|
||||
log "ERROR: session setup must start as root"
|
||||
exit 1
|
||||
fi
|
||||
if ! id "$SESSION_USER" >/dev/null 2>&1; then
|
||||
log "ERROR: session user does not exist: $SESSION_USER"
|
||||
exit 1
|
||||
fi
|
||||
if [ ! -e /dev/dri/card0 ]; then
|
||||
log "ERROR: /dev/dri/card0 is unavailable; leaving the fallback console intact"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ -w /etc ] || [ -w /etc/machine-id ]; then
|
||||
dbus-uuidgen --ensure=/etc/machine-id >/tmp/dbus-uuidgen.out 2>&1 || \
|
||||
log "dbus-uuidgen skipped (see /tmp/dbus-uuidgen.out)"
|
||||
fi
|
||||
if [ ! -s /etc/machine-id ]; then
|
||||
printf '00000000000000000000000000000000\n' >/tmp/machine-id 2>/dev/null || true
|
||||
if [ -w /etc ]; then
|
||||
cp /tmp/machine-id /etc/machine-id 2>/dev/null || true
|
||||
fi
|
||||
fi
|
||||
session_uid="$(id -u "$SESSION_USER")"
|
||||
session_gid="$(id -g "$SESSION_USER")"
|
||||
runtime_dir="/run/user/$session_uid"
|
||||
install -d -m 0700 -o "$session_uid" -g "$session_gid" "$runtime_dir"
|
||||
|
||||
if command -v seatd >/dev/null 2>&1 && [ ! -S /run/seatd.sock ]; then
|
||||
log "starting seatd for the non-systemd guest session"
|
||||
seatd -g video >>"$LOG_FILE" 2>&1 &
|
||||
SEATD_PID=$!
|
||||
s=0
|
||||
while [ ! -S /run/seatd.sock ] && [ "$s" -lt 10 ]; do
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount msleep 100
|
||||
fi
|
||||
s=$((s + 1))
|
||||
done
|
||||
fi
|
||||
log "seatd_sock=$([ -S /run/seatd.sock ] && echo y || echo n) dri=$(ls /dev/dri 2>/dev/null | tr '\n' ' ')"
|
||||
[ -e /dev/tty0 ] || mknod /dev/tty0 c 4 0 2>/dev/null || true
|
||||
[ -e /dev/tty1 ] || mknod /dev/tty1 c 4 1 2>/dev/null || true
|
||||
log "tty=$(ls -l /dev/tty0 /dev/tty1 /dev/console 2>&1 | tr '\n' ' ')"
|
||||
|
||||
# BUG-XORG-SEGV: 宿主 /tmp 已 bind 进 chroot（native 桌面的 Xorg 套接字
|
||||
# 共享可见）。native Xorg 可能比本会话晚一点起来——等待其套接字出现，
|
||||
# 出现即完全跳过 chroot 自启 Xorg（该路径在 ld.so 0x15ded 必崩）。
|
||||
if [ ! -S /tmp/.X11-unix/X0 ]; then
|
||||
w=0
|
||||
while [ ! -S /tmp/.X11-unix/X0 ] && [ "$w" -lt 40 ]; do
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount msleep 300
|
||||
fi
|
||||
w=$((w + 1))
|
||||
done
|
||||
log "native Xorg socket wait: tries=$w found=$([ -S /tmp/.X11-unix/X0 ] && echo y || echo n)"
|
||||
fi
|
||||
|
||||
if [ ! -S /tmp/.X11-unix/X0 ]; then
|
||||
mkdir -p /tmp/.X11-unix /etc/X11
|
||||
chmod 1777 /tmp /tmp/.X11-unix
|
||||
if command -v Xorg >/dev/null 2>&1; then
|
||||
mkdir -p /etc/X11 /tmp /tmp/deshab-xorg-empty
|
||||
cat > /tmp/deshab-xorg.conf <<'XORG_EOF'
|
||||
Section "Files"
|
||||
ModulePath "/usr/local/lib/xorg/modules"
|
||||
ModulePath "/usr/lib/xorg/modules"
|
||||
EndSection
|
||||
Section "ServerLayout"
|
||||
Identifier "Layout0"
|
||||
Screen 0 "Screen0"
|
||||
EndSection
|
||||
Section "ServerFlags"
|
||||
Option "AutoAddDevices" "off"
|
||||
Option "AutoEnableDevices" "off"
|
||||
Option "AutoAddGPU" "false"
|
||||
Option "AllowEmptyInput" "on"
|
||||
Option "DontVTSwitch" "on"
|
||||
EndSection
|
||||
Section "Device"
|
||||
Identifier "VirtioGPU"
|
||||
Driver "modesetting"
|
||||
Option "AccelMethod" "none"
|
||||
Option "SWcursor" "on"
|
||||
Option "kmsdev" "/dev/dri/card0"
|
||||
EndSection
|
||||
Section "Screen"
|
||||
Identifier "Screen0"
|
||||
Device "VirtioGPU"
|
||||
DefaultDepth 24
|
||||
SubSection "Display"
|
||||
Depth 24
|
||||
Modes "1024x768"
|
||||
EndSubSection
|
||||
EndSection
|
||||
XORG_EOF
|
||||
if [ -w /etc/X11 ]; then
|
||||
cp /tmp/deshab-xorg.conf /etc/X11/xorg.conf 2>/dev/null || true
|
||||
fi
|
||||
# /usr/bin/Xorg is a 271-byte sh wrapper that execs suid Xorg.wrap.
|
||||
# The wrap exits immediately in this guest. Run the real server.
|
||||
# persist /usr/lib/Xorg is 2.6MB but its ELF header is smashed
|
||||
# (e_entry=0, 14KB .text). Bind the known-good Arch binary from vdb.
|
||||
if [ -x /usr/local/lib/Xorg.good ]; then
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount bind /usr/local/lib/Xorg.good \
|
||||
/usr/lib/Xorg >/tmp/xorg.bind 2>&1 || \
|
||||
cp -f /usr/local/lib/Xorg.good /usr/lib/Xorg
|
||||
else
|
||||
cp -f /usr/local/lib/Xorg.good /usr/lib/Xorg
|
||||
fi
|
||||
log "using Xorg.good over /usr/lib/Xorg"
|
||||
fi
|
||||
if [ -x /usr/lib/Xorg ]; then
|
||||
XORG_BIN=/usr/lib/Xorg
|
||||
elif [ -x /usr/lib/xorg/Xorg ]; then
|
||||
XORG_BIN=/usr/lib/xorg/Xorg
|
||||
else
|
||||
XORG_BIN="$(command -v Xorg)"
|
||||
fi
|
||||
log "Xorg bin=$XORG_BIN"
|
||||
log "drivers=$(ls /usr/lib/xorg/modules/drivers 2>/dev/null | tr '\n' ' ')"
|
||||
rm -f /tmp/.X0-lock /tmp/.X11-unix/X0 /tmp/Xorg.0.log /tmp/xorg.er
|
||||
# vdb ld.so + persist Xorg SIGSEGVs at Xorg+0 (error 15).
|
||||
# Bash is already loaded; drop the vdb interpreter bind so Xorg's
|
||||
# PT_INTERP is persist ld.so again. Do not exec ld.so as argv[0].
|
||||
XORG_RUN="$XORG_BIN"
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
for p in /lib64/ld-linux-x86-64.so.2 \
|
||||
/usr/lib/ld-linux-x86-64.so.2 \
|
||||
/lib/ld-linux-x86-64.so.2; do
|
||||
/usr/local/bin/utsm_bindmount umount "$p" >/tmp/umount.ld 2>&1
|
||||
log "umount $p rc=$? $(tr '\n' ' ' < /tmp/umount.ld)"
|
||||
done
|
||||
fi
|
||||
XORG_VT=""
|
||||
XORG_IN="/dev/null"
|
||||
if [ -e /dev/tty1 ]; then
|
||||
XORG_VT=vt1
|
||||
XORG_IN=/dev/tty1
|
||||
fi
|
||||
export LD_LIBRARY_PATH=/usr/local/lib/xorg-libs
|
||||
# 取证：ld.so 解析追踪进 stderr（/tmp/xorg.err），崩溃前最后
|
||||
# 一个 "file=" 即毒库。内核 fatal-signal 转储已在会话开头打开。
|
||||
export LD_DEBUG=libs
|
||||
log "ldpath=$LD_LIBRARY_PATH xlibs=$(ls /usr/local/lib/xorg-libs 2>/dev/null | wc -l)"
|
||||
log "starting Xorg :0 $XORG_VT bin=$XORG_RUN nsexec"
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount nsexec "$XORG_RUN" :0 $XORG_VT \
|
||||
-nolisten tcp -noreset -ac -keeptty \
|
||||
-novtswitch -sharevts -verbose 6 -logverbose 6 \
|
||||
-config /tmp/deshab-xorg.conf \
|
||||
-configdir /tmp/deshab-xorg-empty \
|
||||
-logfile /tmp/Xorg.0.log \
|
||||
<"$XORG_IN" >>/tmp/xorg.err 2>&1 &
|
||||
else
|
||||
"$XORG_RUN" :0 $XORG_VT -nolisten tcp -noreset -ac -keeptty \
|
||||
-novtswitch -sharevts -verbose 6 -logverbose 6 \
|
||||
-config /tmp/deshab-xorg.conf \
|
||||
-configdir /tmp/deshab-xorg-empty \
|
||||
-logfile /tmp/Xorg.0.log \
|
||||
<"$XORG_IN" >>/tmp/xorg.err 2>&1 &
|
||||
fi
|
||||
XFBDEV_PID=$!
|
||||
log "Xorg pid=$XFBDEV_PID"
|
||||
i=0
|
||||
while [ ! -S /tmp/.X11-unix/X0 ] && [ "$i" -lt 20 ]; do
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount yield
|
||||
/usr/local/bin/utsm_bindmount msleep 200
|
||||
fi
|
||||
i=$((i + 1))
|
||||
alive=n
|
||||
[ -n "$XFBDEV_PID" ] && [ -d "/proc/$XFBDEV_PID" ] && alive=y
|
||||
if [ "$alive" = n ] || [ $((i % 5)) -eq 0 ]; then
|
||||
log "Xorg wait ${i}s socket=$([ -S /tmp/.X11-unix/X0 ] && echo y || echo n) parent=$alive"
|
||||
fi
|
||||
if [ "$alive" = n ] && [ "$i" -ge 2 ]; then
|
||||
wait "$XFBDEV_PID" 2>/dev/null
|
||||
log "Xorg parent exited rc=$?"
|
||||
break
|
||||
fi
|
||||
done
|
||||
if [ -S /tmp/.X11-unix/X0 ]; then
|
||||
log "Xorg socket ready"
|
||||
else
|
||||
log "WARNING: Xorg socket not ready"
|
||||
log "tmp=$(ls -la /tmp /tmp/.X11-unix /var/log 2>&1 | tr '\n' '|')"
|
||||
dump_file /tmp/xorg.err 60
|
||||
# LD_DEBUG 追踪很长，崩点在末尾——tail 60 行找最后一个 file=
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount tail /tmp/xorg.err 60 \
|
||||
> /tmp/xorg.err.tail 2>/dev/null || true
|
||||
while IFS= read -r line; do
|
||||
log "xorg.err.tail:$line"
|
||||
done < /tmp/xorg.err.tail
|
||||
fi
|
||||
dump_file /tmp/Xorg.0.log 60
|
||||
dump_file /var/log/Xorg.0.log 40
|
||||
dump_file "$LOG_FILE" 20
|
||||
fi
|
||||
else
|
||||
log "WARNING: no Xorg/Xfbdev in KDE root"
|
||||
fi
|
||||
fi
|
||||
|
||||
if [ ! -S /tmp/.X11-unix/X0 ]; then
|
||||
log "ERROR: no X11 socket; not starting Plasma"
|
||||
exit 3
|
||||
fi
|
||||
|
||||
log "selecting Plasma launcher"
|
||||
PLASMA_BIN=""
|
||||
if [ -x /usr/bin/startplasma-x11 ]; then
|
||||
PLASMA_BIN=/usr/bin/startplasma-x11
|
||||
elif command -v startplasma-x11 >/dev/null 2>&1; then
|
||||
PLASMA_BIN="$(command -v startplasma-x11)"
|
||||
fi
|
||||
|
||||
if [ -z "$PLASMA_BIN" ]; then
|
||||
log "startplasma-x11 missing; Plasma Wayland will not light virtio-gpu 2D scanout"
|
||||
if [ -x /usr/bin/startplasma-wayland ]; then
|
||||
PLASMA_BIN=/usr/bin/startplasma-wayland
|
||||
fi
|
||||
fi
|
||||
if [ -z "$PLASMA_BIN" ]; then
|
||||
log "ERROR: no Plasma session binary is installed"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
DBUS_LAUNCH=""
|
||||
if [ -x /usr/lib/plasma-dbus-run-session-if-needed ]; then
|
||||
DBUS_LAUNCH=/usr/lib/plasma-dbus-run-session-if-needed
|
||||
elif command -v dbus-run-session >/dev/null 2>&1; then
|
||||
DBUS_LAUNCH="$(command -v dbus-run-session)"
|
||||
else
|
||||
log "ERROR: no Plasma D-Bus session launcher is installed"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ "$SOFTWARE_RENDERING" -eq 1 ]; then
|
||||
export LIBGL_ALWAYS_SOFTWARE=1
|
||||
export GALLIUM_DRIVER=llvmpipe
|
||||
export MESA_LOADER_DRIVER_OVERRIDE=llvmpipe
|
||||
export QT_QUICK_BACKEND=software
|
||||
log "software rendering fallback enabled (llvmpipe/lavapipe)"
|
||||
fi
|
||||
|
||||
export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin"
|
||||
# Plasma 先吃 plasma-libs（Qt6/KF6 好库），再回退 xorg-libs 验证集与 persist。
|
||||
export LD_LIBRARY_PATH="/usr/local/lib/plasma-libs:/usr/local/lib/xorg-libs${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
|
||||
# The Plasma wrapper execs a bare "dbus-run-session". Call it by
|
||||
# absolute path so a stripped PATH cannot turn into status 127.
|
||||
# Do not ldd the closure here: that walk hangs this guest and the
|
||||
# verify marker must mean the child was actually exec'd.
|
||||
if [ -x /usr/bin/dbus-run-session ]; then
|
||||
DBUS_LAUNCH=/usr/bin/dbus-run-session
|
||||
fi
|
||||
log "starting Plasma as $SESSION_USER via $PLASMA_BIN DISPLAY=:0"
|
||||
log "dbus=$DBUS_LAUNCH runuser=/usr/bin/runuser"
|
||||
echo 1 >/proc/sys/kernel/print-fatal-signals 2>/dev/null || true
|
||||
set +e
|
||||
if [ -x /usr/bin/runuser ]; then
|
||||
if [ "$DBUS_LAUNCH" = "/usr/lib/plasma-dbus-run-session-if-needed" ]; then
|
||||
/usr/bin/runuser --user "$SESSION_USER" -- /usr/bin/env \
|
||||
-u DBUS_SESSION_BUS_ADDRESS \
|
||||
HOME="/home/$SESSION_USER" \
|
||||
USER="$SESSION_USER" \
|
||||
LOGNAME="$SESSION_USER" \
|
||||
DISPLAY=:0 \
|
||||
XDG_RUNTIME_DIR="$runtime_dir" \
|
||||
XDG_SESSION_TYPE=x11 \
|
||||
XDG_SESSION_CLASS=user \
|
||||
XDG_CURRENT_DESKTOP=KDE \
|
||||
DESKTOP_SESSION=plasma \
|
||||
KDE_FULL_SESSION=true \
|
||||
QT_QPA_PLATFORM=xcb \
|
||||
LIBSEAT_BACKEND=seatd \
|
||||
LD_LIBRARY_PATH="$LD_LIBRARY_PATH" \
|
||||
LD_DEBUG=files \
|
||||
PATH="$PATH" \
|
||||
"$DBUS_LAUNCH" -- "$PLASMA_BIN" >>/tmp/deshab-plasma.err 2>&1
|
||||
else
|
||||
/usr/bin/runuser --user "$SESSION_USER" -- /usr/bin/env \
|
||||
-u DBUS_SESSION_BUS_ADDRESS \
|
||||
HOME="/home/$SESSION_USER" \
|
||||
USER="$SESSION_USER" \
|
||||
LOGNAME="$SESSION_USER" \
|
||||
DISPLAY=:0 \
|
||||
XDG_RUNTIME_DIR="$runtime_dir" \
|
||||
XDG_SESSION_TYPE=x11 \
|
||||
XDG_SESSION_CLASS=user \
|
||||
XDG_CURRENT_DESKTOP=KDE \
|
||||
DESKTOP_SESSION=plasma \
|
||||
KDE_FULL_SESSION=true \
|
||||
QT_QPA_PLATFORM=xcb \
|
||||
LIBSEAT_BACKEND=seatd \
|
||||
LD_LIBRARY_PATH="$LD_LIBRARY_PATH" \
|
||||
LD_DEBUG=files \
|
||||
PATH="$PATH" \
|
||||
"$DBUS_LAUNCH" -- "$PLASMA_BIN" >>/tmp/deshab-plasma.err 2>&1
|
||||
fi
|
||||
else
|
||||
log "runuser missing; starting Plasma as root so scanout can proceed"
|
||||
if [ "$DBUS_LAUNCH" = "/usr/lib/plasma-dbus-run-session-if-needed" ]; then
|
||||
/usr/bin/env \
|
||||
-u DBUS_SESSION_BUS_ADDRESS \
|
||||
HOME=/root \
|
||||
USER=root \
|
||||
DISPLAY=:0 \
|
||||
XDG_RUNTIME_DIR="$runtime_dir" \
|
||||
XDG_SESSION_TYPE=x11 \
|
||||
XDG_CURRENT_DESKTOP=KDE \
|
||||
QT_QPA_PLATFORM=xcb \
|
||||
LIBSEAT_BACKEND=seatd \
|
||||
LD_LIBRARY_PATH="$LD_LIBRARY_PATH" \
|
||||
LD_DEBUG=files \
|
||||
PATH="$PATH" \
|
||||
"$DBUS_LAUNCH" -- "$PLASMA_BIN" >>/tmp/deshab-plasma.err 2>&1
|
||||
else
|
||||
/usr/bin/env \
|
||||
-u DBUS_SESSION_BUS_ADDRESS \
|
||||
HOME=/root \
|
||||
USER=root \
|
||||
DISPLAY=:0 \
|
||||
XDG_RUNTIME_DIR="$runtime_dir" \
|
||||
XDG_SESSION_TYPE=x11 \
|
||||
XDG_CURRENT_DESKTOP=KDE \
|
||||
QT_QPA_PLATFORM=xcb \
|
||||
LIBSEAT_BACKEND=seatd \
|
||||
LD_LIBRARY_PATH="$LD_LIBRARY_PATH" \
|
||||
LD_DEBUG=files \
|
||||
PATH="$PATH" \
|
||||
"$DBUS_LAUNCH" -- "$PLASMA_BIN" >>/tmp/deshab-plasma.err 2>&1
|
||||
fi
|
||||
fi
|
||||
status=$?
|
||||
set -e
|
||||
if [ "$status" -ne 0 ]; then
|
||||
log "Plasma failed with status $status sig=$((status > 128 ? status - 128 : 0))"
|
||||
dump_file /tmp/deshab-plasma.err 8
|
||||
# The head only shows dbus-run-session warmup. The crash site is at
|
||||
# the END of the LD_DEBUG stream; dump the tail so kmsg shows which
|
||||
# library/binary was being loaded when the signal hit.
|
||||
if [ -x /usr/local/bin/utsm_bindmount ]; then
|
||||
/usr/local/bin/utsm_bindmount tail /tmp/deshab-plasma.err 200 \
|
||||
> /tmp/deshab-plasma-tail.txt 2>/dev/null || true
|
||||
while IFS= read -r line; do
|
||||
log "plasma-tail:$line"
|
||||
done < /tmp/deshab-plasma-tail.txt
|
||||
/usr/local/bin/utsm_bindmount tail /tmp/Xorg.0.log 80 > /tmp/deshab-xorg-tail.txt 2>/dev/null || true
|
||||
/usr/local/bin/utsm_bindmount tail /tmp/xorg.err 20 > /tmp/deshab-xorg-err.txt 2>/dev/null || true
|
||||
grep -E '\(EE\)|\(WW\)|Fatal|error|failed|Failed' /tmp/deshab-xorg-tail.txt /tmp/deshab-xorg-err.txt 2>/dev/null | head -n 12 | while IFS= read -r line; do
|
||||
log "xorg: $line"
|
||||
done
|
||||
fi
|
||||
dmesg 2>/dev/null | tail -n 40 > /tmp/deshab-dmesg.txt || true
|
||||
grep -E 'segfault|Bus error|bus error|traps:|EXT4-fs|invalid ELF' /tmp/deshab-dmesg.txt 2>/dev/null | head -n 8 | while IFS= read -r line; do
|
||||
log "dmesg: $line"
|
||||
done
|
||||
else
|
||||
log "Plasma session ended normally"
|
||||
fi
|
||||
exit "$status"
|
||||
Reference in New Issue
Block a user