Merging upstream version 256.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

23 files changed, 460 insertions, 288 deletions

diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index 06a8640..f3ba2ca 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -15,10 +15,10 @@ body:
         Do not submit bug reports about anything but the two most recently released *major* systemd versions upstream!
         If there have been multiple stable releases for that major version, please consider updating to a recent one before reporting an issue.
         When using a distro package, please make sure that the version reported is meaningful for upstream.
-        If a distro build is used, please just paste the package version, e.g. `systemd-253-6.fc38.x86_64`.
+        If a distro build is used, please just paste the package version, e.g. `systemd-254.7-1.fc39.x86_64`.
         See https://github.com/systemd/systemd-stable/tags for the list of most recent releases.
         For older version please use distribution trackers (see https://systemd.io/CONTRIBUTING#filing-issues).
-      placeholder: '253'
+      placeholder: '255'
     validations:
       required: true
 
@@ -27,7 +27,7 @@ body:
     attributes:
       label: Used distribution
       description: Used distribution and its version
-      placeholder: Fedora 38
+      placeholder: Fedora 39
     validations:
       required: false
 
@@ -37,7 +37,7 @@ body:
       label: Linux kernel version used
       description: |
         Please use `uname -r` to get linux kernel version.
-      placeholder: kernel-6.2.5-300.fc38.x86_64
+      placeholder: kernel-6.6.8-200.fc39.x86_64
     validations:
       required: false
 
@@ -140,6 +140,7 @@ body:
         - 'systemd-udevd'
         - 'systemd-userdb'
         - 'systemd-veritysetup'
+        - 'systemd-vmspawn'
         - 'systemd-xdg-autostart-generator'
         - 'timedatectl'
         - 'udevadm'
diff --git a/.github/ISSUE_TEMPLATE/feature_request.yml b/.github/ISSUE_TEMPLATE/feature_request.yml
index 1413b5f..645cef9 100644
--- a/.github/ISSUE_TEMPLATE/feature_request.yml
+++ b/.github/ISSUE_TEMPLATE/feature_request.yml
@@ -81,6 +81,7 @@ body:
         - 'systemd-udevd'
         - 'systemd-userdb'
         - 'systemd-veritysetup'
+        - 'systemd-vmspawn'
         - 'systemd-xdg-autostart-generator'
         - 'timedatectl'
         - 'udevadm'
@@ -120,6 +121,6 @@ body:
     attributes:
       label: The systemd version you checked that didn't have the feature you are asking for
       description: If this is not the most recently released upstream version, then please check first if it has that feature already.
-      placeholder: '253'
+      placeholder: '255'
     validations:
       required: false
diff --git a/.github/advanced-issue-labeler.yml b/.github/advanced-issue-labeler.yml
index e6ae5dc..4d70058 100644
--- a/.github/advanced-issue-labeler.yml
+++ b/.github/advanced-issue-labeler.yml
@@ -64,10 +64,10 @@ policy:
           - name: kernel-install
             keys: ['kernel-install']
 
-          - name: logind
+          - name: login
             keys: ['systemd-logind', 'loginctl', 'pam_systemd']
 
-          - name: machined
+          - name: machine
             keys: ['systemd-machined', 'machinectl']
 
           - name: modules-load
@@ -145,5 +145,8 @@ policy:
           - name: veritysetup
             keys: ['systemd-veritysetup']
 
+          - name: vmspawn
+            keys: ['systemd-vmspawn']
+
           - name: xdg-autostart
             keys: ['systemd-xdg-autostart-generator']
diff --git a/.github/development-freeze.yml b/.github/development-freeze.yml
index 564e5f0..b7e7e3b 100644
--- a/.github/development-freeze.yml
+++ b/.github/development-freeze.yml
@@ -4,9 +4,13 @@
 policy:
   # tags like v253-rc1, v253-rc2, etc.
   - tags: ['^\S*-rc\d+$']
+    labels:
+      allow: ['needs-stable-backport', 'dependencies', 'l10n 🌍']
     feedback:
       frozen-state: |
-        An -rc1 tag has been created and a release is being prepared, so please note that PRs introducing new features and APIs will be held back until the new version has been released.
+        > [!IMPORTANT]
+        > An -rc1 tag has been created and a release is being prepared, so please note that PRs introducing new features and APIs will be held back until the new version has been released.
       unfreeze-state: |
-        We had successfully released a new major release. We are no longer in a development freeze phase.
-        We will try our best to get back to your PR as soon as possible. Thank you for your patience.
+        > [!NOTE]
+        > We had successfully released a new major release. We are no longer in a development freeze phase.
+        > We will try our best to get back to your PR as soon as possible. Thank you for your patience.
diff --git a/.github/labeler.yml b/.github/labeler.yml
index fd5fc91..24ff2f0 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -1,140 +1,213 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
+# vi: sw=2 ts=2 et:
 
 apparmor:
-  - '**/*apparmor*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*apparmor*'
 binfmt:
-  - '**/*binfmt*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*binfmt*'
+bsod:
+  - changed-files:
+    - any-glob-to-any-file: '**/*bsod*'
 btrfs:
-  - '**/*btrfs*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*btrfs*'
 build-system:
-  - meson_options.txt
-  - '**/meson.build'
-  - Makefile
-  - configure
+  - changed-files:
+    - any-glob-to-any-file: ['meson_options.txt', '**/meson.build', 'Makefile', 'configure']
 busctl:
-  - '**/*busctl*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*busctl*'
 cgls:
-  - '**/*cgls*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*cgls*'
 cgtop:
-  - '**/*cgtop*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*cgtop*'
 ci:
-  - '.github/*'
+  - changed-files:
+    - any-glob-to-any-file: '.github/*'
 coccinelle:
-  - coccinelle/*
+  - changed-files:
+    - any-glob-to-any-file: 'coccinelle/*'
 coredump:
-  - '**/*coredump*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*coredump*'
 documentation:
-  - NEWS
-  - README*
-  - docs/*
-  - man/*
+  - changed-files:
+    - any-glob-to-any-file: ['NEWS', 'README*', 'docs/*', 'man/*']
 env-generator:
-  - '**/*environment*generator*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*environment*generator*'
+escape:
+  - changed-files:
+    - any-glob-to-any-file: '**/*escape*'
 debug-generator:
-  - '**/debug-generator*'
+  - changed-files:
+    - any-glob-to-any-file: '**/debug-generator*'
 fstab-generator:
-  - '**/*fstab-generator*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*fstab-generator*'
 growfs:
-  - '**/*growfs*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*growfs*'
+hibernate-resume:
+  - changed-files:
+    - any-glob-to-any-file: '**/*hibernate-resume*'
 hwdb:
-  - hwdb.d/**/*
+  - changed-files:
+    - any-glob-to-any-file: 'hwdb.d/**/*'
 journal:
-  - src/journal/*
-  - src/libsystemd/sd-journal/*
+  - changed-files:
+    - any-glob-to-any-file: ['src/journal/*', 'src/libsystemd/sd-journal/*']
 journal-remote:
-  - src/journal-remote/*
+  - changed-files:
+    - any-glob-to-any-file: 'src/journal-remote/*'
+l10n 🌍:
+  - changed-files:
+    - any-glob-to-any-file: 'po/*'
+login:
+  - changed-files:
+    - any-glob-to-any-file: ['src/login/*', '**/sd-login*/**']
 meson:
-  - meson_options.txt
-  - '**/meson.build'
+  - changed-files:
+    - any-glob-to-any-file: ['meson_options.txt', '**/meson.build']
 mkosi:
-  - .mkosi/*
-  - mkosi.build
+  - changed-files:
+    - any-glob-to-any-file: ['.mkosi/*', 'mkosi.build']
+mountfsd:
+  - changed-files:
+    - any-glob-to-any-file: ['src/mountfsd/*']
 network:
-  - src/libsystemd-network/**/*
-  - src/network/**/*
+  - changed-files:
+    - any-glob-to-any-file: ['src/libsystemd-network/**/*', 'src/network/**/*']
+nspawn:
+  - changed-files:
+    - any-glob-to-any-file: '**/*nspawn*'
+nsresource:
+  - changed-files:
+    - any-glob-to-any-file: '**/*nsresource*'
 portable:
-  - src/portable/**/*
+  - changed-files:
+    - any-glob-to-any-file: 'src/portable/**/*'
 rc-local-generator:
-  - src/rc-local-generator/*
+  - changed-files:
+    - any-glob-to-any-file: 'src/rc-local-generator/*'
 repart:
-  - '**/*repart*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*repart*'
 resolve:
-  - '**/*resolve*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*resolve*'
 rfkill:
-  - '**/*rfkill*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*rfkill*'
 rpm:
-  - src/rpm/*
+  - changed-files:
+    - any-glob-to-any-file: 'src/rpm/*'
 run:
-  - src/run/*
-  - man/systemd-run*
+  - changed-files:
+    - any-glob-to-any-file: ['src/run/*', 'man/systemd-run*']
 sd-boot/sd-stub/bootctl:
-  - src/boot/**/*
-  - man/bootctl*
-  - man/systemd-boot.xml
+  - changed-files:
+    - any-glob-to-any-file: ['src/boot/**/*', 'man/bootctl*', 'man/systemd-boot.xml']
 sd-bus:
-  - '**/sd-bus*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-bus*/**'
 sd-daemon:
-  - '**/sd-daemon*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-daemon*/**'
 sd-device:
-  - '**/sd-device*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-device*/**'
 sd-event:
-  - '**/sd-event*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-event*/**'
 sd-hwdb:
-  - '**/sd-hwdb*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-hwdb*/**'
 sd-id128:
-  - '**/sd-id128*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-id128*/**'
 sd-netlink:
-  - '**/sd-netlink*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-netlink*/**'
 sd-path:
-  - '**/sd-path*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-path*/**'
 sd-resolve:
-  - '**/sd-resolve*/**'
+  - changed-files:
+    - any-glob-to-any-file: '**/sd-resolve*/**'
 selinux:
-  - '**/*selinux*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*selinux*'
+shell-completion:
+  - changed-files:
+    - any-glob-to-any-file: 'shell-completion/*'
 sleep:
-  - '**/*sleep*'
+  - changed-files:
+    - any-glob-to-any-file: ['src/shared/*sleep*', 'src/sleep/*']
 smack:
-  - '**/*smack*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*smack*'
 socket-proxy:
-  - '**/*socket-proxy*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*socket-proxy*'
 sysv-generator:
-  - '**/*sysv-generator*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*sysv-generator*'
 systemctl:
-  - '**/systemctl*'
+  - changed-files:
+    - any-glob-to-any-file: '**/systemctl*'
 sysupdate:
-  - '**/*sysupdate*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*sysupdate*'
 sysvcompat:
-  - '**/*sysv*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*sysv*'
 sysctl:
-  - '**/*sysctl*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*sysctl*'
 timedate:
-  - '**/*timedate*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*timedate*'
 timesync:
-  - '**/*timesync*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*timesync*'
 tests:
-  - src/test/**/*
-  - src/fuzz/**/*
-  - test/**/*
-  - '**/test-*'
-  - .github/workflows/*
+  - changed-files:
+    - any-glob-to-any-file: [
+      'src/test/**/*',
+      'src/fuzz/**/*',
+      'test/**/*',
+      '**/test-*',
+      '.github/workflows/*'
+  ]
 tpm2:
-  - '**/*tpm2*'
-  - '**/*tpm-*'
+  - changed-files:
+    - any-glob-to-any-file: ['**/*tpm2*', '**/*tpm-*']
 udev:
-  - src/udev/**/*
-  - src/libudev/*
-  - man/*udev*
+  - changed-files:
+    - any-glob-to-any-file: ['src/udev/**/*', 'src/libudev/*', 'man/*udev*']
 uki:
-  - '**/ukify*'
+  - changed-files:
+    - any-glob-to-any-file: '**/ukify*'
 units:
-  - units/**/*
+  - changed-files:
+    - any-glob-to-any-file: 'units/**/*'
 userdb:
-  - '**/*userdb*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*userdb*'
 util-lib:
-  - src/fundamental/**/*
-  - src/basic/**/*
-  - src/shared/**/*
+  - changed-files:
+    - any-glob-to-any-file: ['src/fundamental/**/*', 'src/basic/**/*', 'src/shared/**/*']
 vconsole:
-  - '**/*vconsole*'
+  - changed-files:
+    - any-glob-to-any-file: '**/*vconsole*'
+vmspawn:
+  - changed-files:
+    - any-glob-to-any-file: '**/*vmspawn*'
 xdg-autostart:
-  - '**/**xdg-autostart-generator*'
+  - changed-files:
+    - any-glob-to-any-file: '**/**xdg-autostart-generator*'
diff --git a/.github/workflows/build_test.sh b/.github/workflows/build_test.sh
index c550046..f9bbdce 100755
--- a/.github/workflows/build_test.sh
+++ b/.github/workflows/build_test.sh
@@ -10,9 +10,9 @@ success() { echo >&2 -e "\033[32;1m$1\033[0m"; }
 ARGS=(
     "--optimization=0 -Dopenssl=disabled -Dcryptolib=gcrypt -Ddns-over-tls=gnutls -Dtpm=true -Dtpm2=enabled"
     "--optimization=s -Dutmp=false"
+    "--optimization=2 -Dc_args=-Wmaybe-uninitialized -Ddns-over-tls=openssl"
     "--optimization=3 -Db_lto=true -Ddns-over-tls=false"
     "--optimization=3 -Db_lto=false -Dtpm2=disabled -Dlibfido2=disabled -Dp11kit=disabled"
-    "--optimization=3 -Ddns-over-tls=openssl"
     "--optimization=3 -Dfexecve=true -Dstandalone-binaries=true -Dstatic-libsystemd=true -Dstatic-libudev=true"
     "-Db_ndebug=true"
 )
@@ -84,6 +84,14 @@ if [[ "$COMPILER" == clang ]]; then
     CXX="clang++-$COMPILER_VERSION"
     AR="llvm-ar-$COMPILER_VERSION"
 
+    if systemd-analyze compare-versions "$COMPILER_VERSION" ge 17; then
+        CFLAGS="-fno-sanitize=function"
+        CXXFLAGS="-fno-sanitize=function"
+    else
+        CFLAGS=""
+        CXXFLAGS=""
+    fi
+
     # Prefer the distro version if available
     if ! apt-get -y install --dry-run "llvm-$COMPILER_VERSION" >/dev/null; then
         # Latest LLVM stack deb packages provided by https://apt.llvm.org/
@@ -99,6 +107,8 @@ elif [[ "$COMPILER" == gcc ]]; then
     CC="gcc-$COMPILER_VERSION"
     CXX="g++-$COMPILER_VERSION"
     AR="gcc-ar-$COMPILER_VERSION"
+    CFLAGS=""
+    CXXFLAGS=""
 
     if ! apt-get -y install --dry-run "gcc-$COMPILER_VERSION" >/dev/null; then
         # Latest gcc stack deb packages provided by
@@ -111,9 +121,12 @@ else
     fatal "Unknown compiler: $COMPILER"
 fi
 
-# PPA with some newer build dependencies (like zstd)
-sudo add-apt-repository -y --no-update ppa:upstream-systemd-ci/systemd-ci
-sudo add-apt-repository -y --no-update --enable-source
+# This is added by default, and it is often broken, but we don't need anything from it
+sudo rm -f /etc/apt/sources.list.d/microsoft-prod.{list,sources}
+# add-apt-repository --enable-source does not work on deb822 style sources.
+for f in /etc/apt/sources.list.d/*.sources; do
+    sudo sed -i "s/Types: deb/Types: deb deb-src/g" "$f"
+done
 sudo apt-get -y update
 sudo apt-get -y build-dep systemd
 sudo apt-get -y install "${PACKAGES[@]}"
@@ -121,7 +134,7 @@ sudo apt-get -y install "${PACKAGES[@]}"
 # always support all the features we need (like --optimization=). Since the build-dep
 # command above installs the distro versions, let's install the pip ones just
 # locally and add the local bin directory to the $PATH.
-pip3 install --user -r .github/workflows/requirements.txt --require-hashes
+pip3 install --user -r .github/workflows/requirements.txt --require-hashes --break-system-packages
 export PATH="$HOME/.local/bin:$PATH"
 
 $CC --version
@@ -131,11 +144,16 @@ ninja --version
 for args in "${ARGS[@]}"; do
     SECONDS=0
 
+    if [[ "$COMPILER" == clang && "$args" =~ Wmaybe-uninitialized ]]; then
+        # -Wmaybe-uninitialized is not implemented in clang
+        continue
+    fi
+
     info "Checking build with $args"
     # shellcheck disable=SC2086
     if ! AR="$AR" \
-         CC="$CC" CC_LD="$LINKER" CFLAGS="-Werror" \
-         CXX="$CXX" CXX_LD="$LINKER" CXXFLAGS="-Werror" \
+         CC="$CC" CC_LD="$LINKER" CFLAGS="$CFLAGS" \
+         CXX="$CXX" CXX_LD="$LINKER" CXXFLAGS="$CXXFLAGS" \
          meson setup \
                -Dtests=unsafe -Dslow-tests=true -Dfuzz-tests=true --werror \
                -Dnobody-group=nogroup -Dcryptolib="${CRYPTOLIB:?}" -Ddebug=false \
diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index f91ac03..164b3a0 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -17,7 +17,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ toJSON(matrix.env) }}-${{ github.ref }}
       cancel-in-progress: true
@@ -28,11 +28,11 @@ jobs:
           - { COMPILER: "gcc",   COMPILER_VERSION: "11", LINKER: "bfd",  CRYPTOLIB: "gcrypt"  }
           - { COMPILER: "gcc",   COMPILER_VERSION: "13", LINKER: "mold", CRYPTOLIB: "openssl" }
           - { COMPILER: "clang", COMPILER_VERSION: "14", LINKER: "mold", CRYPTOLIB: "gcrypt"  }
-          - { COMPILER: "clang", COMPILER_VERSION: "15", LINKER: "bfd",  CRYPTOLIB: "openssl" }
-          - { COMPILER: "clang", COMPILER_VERSION: "17", LINKER: "lld",  CRYPTOLIB: "auto"    }
+          - { COMPILER: "clang", COMPILER_VERSION: "16", LINKER: "bfd",  CRYPTOLIB: "openssl" }
+          - { COMPILER: "clang", COMPILER_VERSION: "18", LINKER: "lld",  CRYPTOLIB: "auto"    }
     env: ${{ matrix.env }}
     steps:
       - name: Repository checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
       - name: Build check
         run: .github/workflows/build_test.sh
diff --git a/.github/workflows/cflite_pr.yml b/.github/workflows/cflite_pr.yml
index 707ea0b..f0d3217 100644
--- a/.github/workflows/cflite_pr.yml
+++ b/.github/workflows/cflite_pr.yml
@@ -13,7 +13,7 @@ permissions: read-all
 
 jobs:
   PR:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     if: github.repository != 'systemd/systemd' || github.event.pull_request.user.login == 'dependabot[bot]'
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.sanitizer }}-${{ github.ref }}
diff --git a/.github/workflows/cifuzz.yml b/.github/workflows/cifuzz.yml
index 66714c2..9b91740 100644
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -22,7 +22,8 @@ on:
       - main
 jobs:
   Fuzzing:
-    runs-on: ubuntu-latest
+    # FIXME: Figure out why 32-bit applications fail to run in docker on Ubuntu 24.04.
+    runs-on: ubuntu-22.04
     if: github.repository == 'systemd/systemd'
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.sanitizer }}-${{ matrix.architecture }}-${{ github.ref }}
@@ -60,14 +61,14 @@ jobs:
           sanitizer: ${{ matrix.sanitizer }}
           output-sarif: true
       - name: Upload Crash
-        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
+        uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3
         if: failure() && steps.build.outcome == 'success'
         with:
           name: ${{ matrix.sanitizer }}-${{ matrix.architecture }}-artifacts
           path: ./out/artifacts
       - name: Upload Sarif
         if: always() && steps.build.outcome == 'success'
-        uses: github/codeql-action/upload-sarif@407ffafae6a767df3e0230c3df91b6443ae8df75
+        uses: github/codeql-action/upload-sarif@3ab4101902695724f9365a384f86c1074d94e18c
         with:
           # Path to SARIF file relative to the root of the repository
           sarif_file: cifuzz-sarif/results.sarif
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 2c02ef5..0d284f7 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -27,7 +27,7 @@ jobs:
   analyze:
     name: Analyze
     if: github.repository != 'systemd/systemd-security'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.language }}-${{ github.ref }}
       cancel-in-progress: true
@@ -42,10 +42,10 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
 
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@407ffafae6a767df3e0230c3df91b6443ae8df75
+      uses: github/codeql-action/init@3ab4101902695724f9365a384f86c1074d94e18c
       with:
         languages: ${{ matrix.language }}
         config-file: ./.github/codeql-config.yml
@@ -53,7 +53,7 @@ jobs:
     - run: sudo -E .github/workflows/unit_tests.sh SETUP
 
     - name: Autobuild
-      uses: github/codeql-action/autobuild@407ffafae6a767df3e0230c3df91b6443ae8df75
+      uses: github/codeql-action/autobuild@3ab4101902695724f9365a384f86c1074d94e18c
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@407ffafae6a767df3e0230c3df91b6443ae8df75
+      uses: github/codeql-action/analyze@3ab4101902695724f9365a384f86c1074d94e18c
diff --git a/.github/workflows/coverity.yml b/.github/workflows/coverity.yml
index 1545d59..ad7a5d2 100644
--- a/.github/workflows/coverity.yml
+++ b/.github/workflows/coverity.yml
@@ -14,7 +14,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     if: github.repository == 'systemd/systemd'
     env:
       # Set in repo settings -> secrets -> actions
@@ -22,7 +22,7 @@ jobs:
       COVERITY_SCAN_NOTIFICATION_EMAIL: "${{ secrets.COVERITY_SCAN_NOTIFICATION_EMAIL }}"
     steps:
       - name: Repository checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
       # Reuse the setup phase of the unit test script to avoid code duplication
       - name: Install build dependencies
         run: sudo -E .github/workflows/unit_tests.sh SETUP
diff --git a/.github/workflows/development_freeze.yml b/.github/workflows/development_freeze.yml
index e371e19..c2360a3 100644
--- a/.github/workflows/development_freeze.yml
+++ b/.github/workflows/development_freeze.yml
@@ -8,10 +8,6 @@ on:
     types:
       - completed
 
-env:
-  PULL_REQUEST_METADATA_DIR: pull_request
-  PULL_REQUEST_METADATA_FILE: metadata
-
 permissions:
   contents: read
 
@@ -21,54 +17,27 @@ jobs:
       github.event.workflow_run.event == 'pull_request' &&
       github.event.workflow_run.conclusion == 'success' &&
       github.repository == 'systemd/systemd'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     permissions:
       pull-requests: write
 
     steps:
-      - name: Download Pull Request Metadata artifact
-        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
-        with:
-          script: |
-            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
-               owner: context.repo.owner,
-               repo: context.repo.repo,
-               run_id: ${{ github.event.workflow_run.id }},
-            });
-
-            const matchArtifact = artifacts.data.artifacts.filter((artifact) => {
-              return artifact.name == "${{ env.PULL_REQUEST_METADATA_FILE }}"
-            })[0];
-
-            const download = await github.rest.actions.downloadArtifact({
-               owner: context.repo.owner,
-               repo: context.repo.repo,
-               artifact_id: matchArtifact.id,
-               archive_format: 'zip',
-            });
-
-            const fs = require('fs');
-            fs.writeFileSync('${{ github.workspace }}/${{ env.PULL_REQUEST_METADATA_FILE }}.zip', Buffer.from(download.data));
-
-      - run: unzip ${{ env.PULL_REQUEST_METADATA_FILE }}.zip
-
-      - name: 'Get Pull Request number'
-        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
+      - id: artifact
+        name: Download Pull Request Metadata artifact
+        uses: redhat-plumbers-in-action/download-artifact@463ae626ac2dd333491c7beccaa24c12c5c259b8
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            const fs = require('fs');
-            const pr_number = Number(fs.readFileSync('./${{ env.PULL_REQUEST_METADATA_FILE }}'));
-            core.exportVariable('pr_number', pr_number);
+          name: Pull Request Metadata
 
       - name: Repository checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
         with:
           fetch-depth: 0
 
       - name: Development Freezer
-        uses: redhat-plumbers-in-action/devel-freezer@67aec4a153bd9fca5322e1c4dd4d7c419fb36362
+        uses: redhat-plumbers-in-action/devel-freezer@ad766eafd555b28d2cb8e27937835983f9c3d173
         with:
-          pr-number: ${{ env.pr_number }}
+          pr-number: ${{ fromJSON(steps.artifact.outputs.pr-metadata-json).number }}
+          # delay start of validation to allow for some milestone/labels tweaking
+          delay: 20
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/differential-shellcheck.yml b/.github/workflows/differential-shellcheck.yml
index b04aabb..244f5d5 100644
--- a/.github/workflows/differential-shellcheck.yml
+++ b/.github/workflows/differential-shellcheck.yml
@@ -16,20 +16,25 @@ permissions:
 jobs:
   lint:
     if: github.event.repository.name != 'systemd-security'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     permissions:
       security-events: write
 
     steps:
       - name: Repository checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
         with:
           fetch-depth: 0
 
       - name: Differential ShellCheck
-        uses: redhat-plumbers-in-action/differential-shellcheck@91e2582e40236f831458392d905578d680baa138
+        uses: redhat-plumbers-in-action/differential-shellcheck@60c9f2b924a9c5a2ddbb25e7b23e8e11b56faab9
         with:
           # exclude all `.in` files because they may contain unsupported syntax, and they have to be preprocessed first
-          exclude-path: '**/*.in'
+          # TEMPORARY: exclude bash completion files, they would generate too many defects in Code scanning dashboard (600+)
+          # exclude zsh completion files, zsh is not supported by ShellCheck
+          exclude-path: |
+            '**/*.in'
+            'shell-completion/bash/*'
+            'shell-completion/zsh/*'
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/gather-pr-metadata.yml b/.github/workflows/gather-pr-metadata.yml
index 5b3c360..e4a0caf 100644
--- a/.github/workflows/gather-pr-metadata.yml
+++ b/.github/workflows/gather-pr-metadata.yml
@@ -6,32 +6,25 @@ on:
   pull_request:
     branches: [ main ]
 
-env:
-  PULL_REQUEST_METADATA_DIR: pull_request
-  PULL_REQUEST_METADATA_FILE: metadata
-
 permissions:
   contents: read
 
 jobs:
   gather-metadata:
     if: github.repository == 'systemd/systemd'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
       - name: Repository checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
-        with:
-          fetch-depth: 0
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
 
-      - name: Store PR number in file
-        run: |
-          mkdir -p ./${{ env.PULL_REQUEST_METADATA_DIR }}
-          echo ${{ github.event.number }} >./${{ env.PULL_REQUEST_METADATA_DIR }}/${{ env.PULL_REQUEST_METADATA_FILE }}
+      - id: metadata
+        name: Gather Pull Request Metadata
+        uses: redhat-plumbers-in-action/gather-pull-request-metadata@17821d3bc27c1efed339595898c2e622accc5a1b
 
       - name: Upload Pull Request Metadata artifact
-        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
+        uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3
         with:
-          name: ${{ env.PULL_REQUEST_METADATA_FILE }}
-          path: ${{ env.PULL_REQUEST_METADATA_DIR }}
+          name: Pull Request Metadata
+          path: ${{ steps.metadata.outputs.metadata-file }}
           retention-days: 1
diff --git a/.github/workflows/issue_labeler.yml b/.github/workflows/issue_labeler.yml
index d8ba0a5..4bedf0d 100644
--- a/.github/workflows/issue_labeler.yml
+++ b/.github/workflows/issue_labeler.yml
@@ -10,7 +10,7 @@ permissions:
 
 jobs:
   label-component:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     permissions:
       issues: write
@@ -20,16 +20,16 @@ jobs:
         template: [ bug_report.yml, feature_request.yml ]
 
     steps:
-      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
 
       - name: Parse issue form
-        uses: stefanbuck/github-issue-parser@c1a559d78bfb8dd05216dab9ffd2b91082ff5324
+        uses: stefanbuck/github-issue-parser@1e5bdee70d4b3e066a33aa0669ab782943825f94
         id: issue-parser
         with:
           template-path: .github/ISSUE_TEMPLATE/${{ matrix.template }}
 
       - name: Set labels based on component field
-        uses: redhat-plumbers-in-action/advanced-issue-labeler@71bcf99aef4b9ea844db9a43755e8ac02c8e661e
+        uses: redhat-plumbers-in-action/advanced-issue-labeler@d498805e5c7c0658e336948b3363480bcfd68da6
         with:
           issue-form: ${{ steps.issue-parser.outputs.jsonString }}
           template: ${{ matrix.template }}
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
index 7f66a53..241b581 100644
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -7,6 +7,14 @@ name: "Pull Request Labeler"
 on:
   pull_request_target:
     types: [opened, synchronize, reopened, ready_for_review, closed]
+    paths-ignore:
+      - '.github/labeler.yml'
+      - '.github/workflows/labeler.yml'
+  # Allow testing changes made to the labeler configuration
+  pull_request:
+    paths:
+      - '.github/labeler.yml'
+      - '.github/workflows/labeler.yml'
   issue_comment:
     types: [created]
 
@@ -16,22 +24,26 @@ permissions:
 jobs:
   triage:
     if: github.repository == 'systemd/systemd'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       pull-requests: write
 
     steps:
+    - name: Repository checkout
+      uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
+      if: github.event_name == 'pull_request'
+
     - name: Label PR based on policy in labeler.yml
-      uses: actions/labeler@ac9175f8a1f3625fd0d4fb234536d26811351594
-      if: github.event_name == 'pull_request_target' && github.event.action != 'closed'
+      uses: actions/labeler@8558fd74291d67161a8a78ce36a881fa63b766a9
+      if: startsWith(github.event_name, 'pull_request') && github.event.action != 'closed'
       with:
         repo-token: "${{ secrets.GITHUB_TOKEN }}"
         configuration-path: .github/labeler.yml
-        sync-labels: "" # This is a workaround for issue 18671
+        sync-labels: false
 
     - name: Set or remove labels based on systemd development workflow
       uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
-      if: github.event_name == 'pull_request_target' && github.event.action != 'closed' && !github.event.pull_request.draft
+      if: startsWith(github.event_name, 'pull_request') && github.event.action != 'closed' && !github.event.pull_request.draft
       with:
         script: |
           response = await github.rest.issues.listLabelsOnIssue({
@@ -40,38 +52,34 @@ jobs:
             repo: context.repo.repo,
           });
 
-          good_to_merge = [
+          original = new Set(response.data.map(l => l.name));
+          labels = new Set(original);
+
+          good_to_merge = new Set([
             "good-to-merge/waiting-for-ci 👍",
             "good-to-merge/after-next-release",
             "good-to-merge/with-minor-suggestions",
             "good-to-merge/waiting-for-reporter-feedback 👍",
-          ];
+          ]);
 
-          if (response.data.every(l => !good_to_merge.includes(l.name))) {
-            await github.rest.issues.addLabels({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              labels: ["please-review"]
-            });
+          if (Array.from(labels).filter(l => good_to_merge.has(l)).length == 0) {
+            labels.add("please-review");
           }
 
           for (const label of ["reviewed/needs-rework 🔨",
                                "ci-fails/needs-rework 🔥",
                                "ci-failure-appears-unrelated",
                                "needs-rebase"]) {
-            try {
-              await github.rest.issues.removeLabel({
-                issue_number: context.issue.number,
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                name: label,
-              });
-            } catch (err) {
-              if (err.status != 404) {
-                throw err;
-              }
-            }
+            labels.delete(label);
+          }
+
+          if (labels.size != original.size || Array.from(labels).some(l => !original.has(l))) {
+            await github.rest.issues.setLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: Array.from(labels),
+            });
           }
 
     - name: Add please-review label on command in issue comment
@@ -88,9 +96,18 @@ jobs:
 
     - name: Remove specific labels when PR is closed or merged
       uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea
-      if: github.event_name == 'pull_request_target' && github.event.action == 'closed'
+      if: startsWith(github.event_name, 'pull_request') && github.event.action == 'closed'
       with:
         script: |
+          response = await github.rest.issues.listLabelsOnIssue({
+            issue_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+          });
+
+          original = new Set(response.data.map(l => l.name));
+          labels = new Set(original);
+
           for (const label of ["please-review",
                                "reviewed/needs-rework 🔨",
                                "ci-fails/needs-rework 🔥",
@@ -104,16 +121,14 @@ jobs:
                                "dont-merge 💣",
                                "squash-on-merge",
                                "quick-review 🏃‍♂️"]) {
-            try {
-              await github.rest.issues.removeLabel({
-                issue_number: context.issue.number,
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                name: label,
-              });
-            } catch (err) {
-              if (err.status != 404) {
-                throw err;
-              }
-            }
+            labels.delete(label);
+          }
+
+          if (labels.size != original.size || Array.from(labels).some(l => !original.has(l))) {
+            await github.rest.issues.setLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: Array.from(labels),
+            });
           }
diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index fd1a7a4..cf0bc09 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -16,21 +16,22 @@ permissions:
 jobs:
   build:
     name: Lint Code Base
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
       cancel-in-progress: true
 
     steps:
       - name: Repo checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
         with:
           # We need a full repo clone
           fetch-depth: 0
 
       - name: Lint Code Base
-        uses: github/super-linter/slim@45fc0d88288beee4701c62761281edfee85655d7
+        uses: super-linter/super-linter/slim@88ea3923a7e1f89dd485d079f6eb5f5e8f937589
         env:
           DEFAULT_BRANCH: main
+          MULTI_STATUS: false
           VALIDATE_ALL_CODEBASE: false
           VALIDATE_GITHUB_ACTIONS: true
diff --git a/.github/workflows/make_release.yml b/.github/workflows/make_release.yml
index 9902a6c..dc7de69 100644
--- a/.github/workflows/make_release.yml
+++ b/.github/workflows/make_release.yml
@@ -11,14 +11,14 @@ permissions:
 jobs:
   release:
     if: github.repository == 'systemd/systemd' || github.repository == 'systemd/systemd-stable'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     permissions:
       contents: write
 
     steps:
       - name: Release
-        uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844
+        uses: softprops/action-gh-release@69320dbe05506a9a39fc8ae11030b214ec2d1f87
         with:
           prerelease: ${{ contains(github.ref_name, '-rc') }}
           draft: ${{ github.repository == 'systemd/systemd' }}
diff --git a/.github/workflows/mkosi.yml b/.github/workflows/mkosi.yml
index 8b32ec8..425d737 100644
--- a/.github/workflows/mkosi.yml
+++ b/.github/workflows/mkosi.yml
@@ -46,7 +46,7 @@ permissions:
 
 jobs:
   ci:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.distro }}-${{ matrix.release }}-${{ github.ref }}
       cancel-in-progress: true
@@ -56,76 +56,94 @@ jobs:
         include:
           - distro: arch
             release: rolling
+            sanitizers: ""
+            llvm: 0
+            cflags: "-O2 -D_FORTIFY_SOURCE=3"
           - distro: debian
             release: testing
+            sanitizers: ""
+            llvm: 0
+            cflags: "-Og"
           - distro: ubuntu
-            release: jammy
+            release: noble
+            sanitizers: ""
+            llvm: 0
+            cflags: "-Og"
           - distro: fedora
-            release: "39"
+            release: "40"
+            sanitizers: ""
+            llvm: 0
+            cflags: "-Og"
           - distro: fedora
             release: rawhide
+            sanitizers: address,undefined
+            llvm: 1
+            cflags: "-Og"
           - distro: opensuse
             release: tumbleweed
+            sanitizers: ""
+            llvm: 0
+            cflags: "-Og"
           - distro: centos
             release: "9"
-          - distro: centos
-            release: "8"
-
-    env:
-      SYSTEMD_LOG_LEVEL: debug
+            sanitizers: ""
+            llvm: 0
+            cflags: "-Og"
 
     steps:
-    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
-    - uses: systemd/mkosi@bbe715f42911f9660712377a5b39335b9391ae22
+    - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
+    - uses: systemd/mkosi@0081ea66faf56a35353d6aeadfe42f9679c7d1cf
+
+    # Freeing up disk space with rm -rf can take multiple minutes. Since we don't need the extra free space
+    # immediately, we remove the files in the background. However, we first move them to a different location
+    # so that nothing tries to use anything in these directories anymore while we're busy deleting them.
+    - name: Free disk space
+      run: |
+        sudo mv /usr/local /usr/local.trash
+        sudo mv /opt/hostedtoolcache /opt/hostedtoolcache.trash
+        sudo systemd-run rm -rf /usr/local.trash /opt/hostedtoolcache.trash
+
+    - name: Btrfs
+      run: |
+        truncate --size=100G btrfs.raw
+        mkfs.btrfs btrfs.raw
+        sudo mkdir /mnt/mkosi
+        LOOP="$(sudo losetup --find --show --direct-io=on btrfs.raw)"
+        sudo mount "$LOOP" /mnt/mkosi --options compress=zstd:1,user_subvol_rm_allowed,noatime,discard=async,space_cache=v2
+        sudo chown "$(id -u):$(id -g)" /mnt/mkosi
+        mkdir /mnt/mkosi/tmp
+        echo "TMPDIR=/mnt/mkosi/tmp" >>"$GITHUB_ENV"
+        ln -s /mnt/mkosi/build build
 
     - name: Configure
       run: |
-        tee mkosi.local.conf <<- EOF
+        tee mkosi.local.conf <<EOF
         [Distribution]
         Distribution=${{ matrix.distro }}
         Release=${{ matrix.release }}
-        EOF
-
-        tee mkosi.conf.d/99-ci.conf <<- EOF
-        [Content]
-        Environment=CI_BUILD=1
-                    SLOW_TESTS=true
 
-        [Host]
-        KernelCommandLineExtra=systemd.unit=mkosi-check-and-shutdown.service
-                               systemd.journald.max_level_console=debug
-                               # udev's debug log output is very verbose, so up it to info in CI.
-                               udev.log_level=info
-                               # Root device can take a long time to appear, so let's bump the timeout.
-                               systemd.default_device_timeout_sec=180
-        QemuVsock=yes
-        # Sometimes we run on a host with /dev/kvm, but it is broken, so explicitly disable it
-        QemuKvm=no
-        Ephemeral=yes
-        EOF
+        [Output]
+        # Build a disk image in CI as this logic is much more prone to breakage.
+        Format=disk
+        UseSubvolumes=yes
 
-        # For erofs, we have to install linux-modules-extra-azure, but that doesn't match the running kernel
-        # version, so we can't load the erofs module. squashfs is a builtin module so we use that instead.
+        WorkspaceDirectory=$TMPDIR
+        PackageCacheDirectory=$TMPDIR/cache
 
-        mkdir -p mkosi.images/system/mkosi.repart/10-usr.conf.d
-        tee mkosi.images/system/mkosi.repart/10-usr.conf.d/squashfs.conf <<- EOF
-        [Partition]
-        Format=squashfs
-        EOF
+        [Content]
+        Environment=
+                # Build debuginfo packages since we'll be publishing the packages as artifacts.
+                WITH_DEBUG=1
+                CFLAGS="${{ matrix.cflags }}"
+                SANITIZERS=${{ matrix.sanitizers }}
+                MESON_OPTIONS=--werror
+                LLVM=${{ matrix.llvm }}
 
-        # The emergency shell is not useful in the CI, as it just blocks for a long time before the job
-        # eventually times out. Override it to just shutdown immediately.
-        mkdir -p mkosi.images/initrd/mkosi.extra/usr/lib/systemd/system/emergency.service.d/
-        mkdir -p mkosi.images/system/mkosi.extra/usr/lib/systemd/system/emergency.service.d/
-        tee mkosi.images/initrd/mkosi.extra/usr/lib/systemd/system/emergency.service.d/poweroff.conf <<- EOF
-        [Unit]
-        FailureAction=exit
-        [Service]
-        ExecStartPre=
-        ExecStart=
-        ExecStart=false
+        [Host]
+        QemuMem=4G
+        # We build with debuginfo so there's no point in mounting the sources into the machine.
+        RuntimeBuildSources=no
         EOF
-        cp mkosi.images/initrd/mkosi.extra/usr/lib/systemd/system/emergency.service.d/poweroff.conf mkosi.images/system/mkosi.extra/usr/lib/systemd/system/emergency.service.d/poweroff.conf
 
     - name: Generate secure boot key
       run: mkosi --debug genkey
@@ -133,11 +151,63 @@ jobs:
     - name: Show image summary
       run: mkosi summary
 
-    - name: Build
-      run: mkosi --debug
-
-    - name: Boot systemd-nspawn
-      run: test "$(sudo mkosi --debug boot 1>&2; echo $?)" -eq 123
-
-    - name: Boot QEMU
-      run: timeout -k 30 10m test "$(mkosi --debug qemu 1>&2; echo $?)" -eq 123
+    - name: Install dependencies
+      run: |
+        mkosi dependencies |
+        xargs -d '\n' sudo apt-get install \
+            gperf \
+            libblkid-dev \
+            libcap-dev \
+            libcryptsetup-dev \
+            libcurl4-openssl-dev \
+            libfdisk-dev \
+            libmicrohttpd-dev \
+            libmount-dev \
+            libtss2-dev \
+            meson
+
+    - name: Configure meson
+      run: |
+        meson setup build \
+            --buildtype=debugoptimized \
+            -Dintegration-tests=true \
+            -Dremote=enabled \
+            -Dopenssl=enabled \
+            -Dblkid=enabled \
+            -Dtpm2=enabled \
+            -Dlibcryptsetup=enabled \
+            -Dlibcurl=enabled \
+            -Drepart=enabled \
+            -Dfirstboot=true \
+            -Dsysusers=true \
+            -Dtmpfiles=true \
+            -Dhwdb=true \
+            -Dvmspawn=enabled
+
+    - name: Build image
+      run: meson compile -C build mkosi
+
+    - name: Run integration tests
+      run: sudo --preserve-env meson test -C build --no-rebuild --suite integration-tests --print-errorlogs --no-stdsplit --num-processes "$(($(nproc) - 1))"
+
+    - name: Archive failed test journals
+      uses: actions/upload-artifact@v4
+      if: failure() && (github.repository == 'systemd/systemd' || github.repository == 'systemd/systemd-stable')
+      with:
+        name: ci-mkosi-${{ github.run_id }}-${{ github.run_attempt }}-${{ matrix.distro }}-${{ matrix.release }}-failed-test-journals
+        path: |
+          build/test/journal/*.journal
+          build/meson-logs/*
+        retention-days: 7
+
+    - name: Archive packages
+      uses: actions/upload-artifact@v4
+      if: (success() || failure()) && (github.repository == 'systemd/systemd' || github.repository == 'systemd/systemd-stable')
+      with:
+        name: ci-mkosi-${{ github.run_id }}-${{ github.run_attempt }}-${{ matrix.distro }}-${{ matrix.release }}-packages
+        path: |
+          build/mkosi.output/*.rpm
+          build/mkosi.output/*.deb
+          build/mkosi.output/*.ddeb
+          build/mkosi.output/*.pkg.tar
+        retention-days: 4
diff --git a/.github/workflows/requirements.txt b/.github/workflows/requirements.txt
index b42b98e..a073aaf 100644
--- a/.github/workflows/requirements.txt
+++ b/.github/workflows/requirements.txt
@@ -1,6 +1,6 @@
-meson==1.3.0 \
-    --hash=sha256:4ba253ef60e454e23234696119cbafa082a0aead0bd3bbf6991295054795f5dc \
-    --hash=sha256:e9f54046ce5b9a1f3024f7a7d52f19f085fd57c9d26a5db0cfcf0750572a8fd8
+meson==1.4.1 \
+    --hash=sha256:1b8aad738a5f6ae64294cc8eaba9a82988c1c420204484ac02ef782e5bba5f49 \
+    --hash=sha256:d5acc3abae2dad3c70ddcbd10acac92b78b144d34d43f40f5b8ac31dfd8a826a
 ninja==1.11.1.1 \
     --hash=sha256:18302d96a5467ea98b68e1cae1ae4b4fb2b2a56a82b955193c637557c7273dbd \
     --hash=sha256:185e0641bde601e53841525c4196278e9aaf4463758da6dd1e752c0a0f54136a \
diff --git a/.github/workflows/scorecards.yml b/.github/workflows/scorecards.yml
index e2a9f27..44ee6f1 100644
--- a/.github/workflows/scorecards.yml
+++ b/.github/workflows/scorecards.yml
@@ -23,18 +23,18 @@ jobs:
   analysis:
     name: Scorecards analysis
     if: github.repository == 'systemd/systemd'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       id-token: write # Used to receive a badge.
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6
         with:
           persist-credentials: false
 
       - name: Run analysis
-        uses: ossf/scorecard-action@0864cf19026789058feabb7e87baa5f140aac736 # v2.3.1
+        uses: ossf/scorecard-action@dc50aa9510b46c811795eb24b2f1ba02a914e534 # v2.3.3
         with:
           results_file: results.sarif
           results_format: sarif
diff --git a/.github/workflows/unit_tests.sh b/.github/workflows/unit_tests.sh
index c1a5ede..4433d84 100755
--- a/.github/workflows/unit_tests.sh
+++ b/.github/workflows/unit_tests.sh
@@ -42,22 +42,38 @@ set -ex
 
 MESON_ARGS=(-Dcryptolib=${CRYPTOLIB:-auto})
 
+# (Re)set the current oom-{score-}adj. For some reason root on GH actions is able to _decrease_
+# its oom-score even after dropping all capabilities (including CAP_SYS_RESOURCE), until the
+# score is explicitly changed after sudo. No idea what's going on, but it breaks
+# exec-oomscoreadjust-negative.service from test-execute when running unprivileged.
+choom -p $$ -n 0
+
 for phase in "${PHASES[@]}"; do
     case $phase in
         SETUP)
             info "Setup phase"
-            # PPA with some newer build dependencies
-            add-apt-repository -y --no-update ppa:upstream-systemd-ci/systemd-ci
-            add-apt-repository -y --no-update --enable-source
+            # This is added by default, and it is often broken, but we don't need anything from it
+            rm -f /etc/apt/sources.list.d/microsoft-prod.{list,sources}
+            # add-apt-repository --enable-source does not work on deb822 style sources.
+            for f in /etc/apt/sources.list.d/*.sources; do
+                sed -i "s/Types: deb/Types: deb deb-src/g" "$f"
+            done
             apt-get -y update
             apt-get -y build-dep systemd
             apt-get -y install "${ADDITIONAL_DEPS[@]}"
-            pip3 install -r .github/workflows/requirements.txt --require-hashes
+            pip3 install -r .github/workflows/requirements.txt --require-hashes --break-system-packages
+
+            # Make sure the build dir is accessible even when drop privileges, otherwise the unprivileged
+            # part of test-execute gets skipped, since it can't run systemd-executor
+            chmod o+x /home/runner
+            capsh --drop=all -- -c "stat $PWD/meson.build"
             ;;
         RUN|RUN_GCC|RUN_CLANG|RUN_CLANG_RELEASE)
             if [[ "$phase" =~ ^RUN_CLANG ]]; then
                 export CC=clang
                 export CXX=clang++
+                export CFLAGS="-fno-sanitize=function"
+                export CXXFLAGS="-fno-sanitize=function"
                 if [[ "$phase" == RUN_CLANG ]]; then
                     # The docs build is slow and is not affected by compiler/flags, so do it just once
                     MESON_ARGS+=(-Dman=enabled)
@@ -82,6 +98,8 @@ for phase in "${PHASES[@]}"; do
             if [[ "$phase" =~ ^RUN_CLANG_ASAN_UBSAN ]]; then
                 export CC=clang
                 export CXX=clang++
+                export CFLAGS="-fno-sanitize=function"
+                export CXXFLAGS="-fno-sanitize=function"
                 # Build fuzzer regression tests only with clang (for now),
                 # see: https://github.com/systemd/systemd/pull/15886#issuecomment-632689604
                 # -Db_lundef=false: See https://github.com/mesonbuild/meson/issues/764
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index d2164cc..895068c 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -14,7 +14,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.run_phase }}-${{ matrix.cryptolib }}-${{ github.ref }}
       cancel-in-progress: true
@@ -30,7 +30,7 @@ jobs:
             cryptolib: gcrypt
     steps:
       - name: Repository checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
       - name: Install build dependencies
         run: |
           # Drop XDG_* stuff from /etc/environment, so we don't get the user