diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 20b03c4348454..c8320056f15fc 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -28,7 +28,7 @@ defaults:
 jobs:
   style_check:
     name: Style check
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
@@ -43,7 +43,7 @@ jobs:
     name: Clippy on ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-24.04, macos-26, windows-2025]
+        os: [ubuntu-26.04, macos-26, windows-2025]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 10
     steps:
@@ -73,7 +73,7 @@ jobs:
             only: '(aarch64|x86_64)' # just a spot check for beta
           - toolchain: stable
           - toolchain: 1.65.0 # msrv
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 25
     env:
       TOOLCHAIN: ${{ matrix.toolchain }}
@@ -131,7 +131,7 @@ jobs:
           - target: aarch64-pc-windows-msvc
             os: windows-11-arm
           - target: aarch64-unknown-linux-gnu
-            os: ubuntu-24.04-arm
+            os: ubuntu-26.04-arm
           - target: i686-pc-windows-gnu
             os: windows-2025
           - target: i686-pc-windows-msvc
@@ -142,7 +142,7 @@ jobs:
           - target: x86_64-pc-windows-msvc
             os: windows-2025
           - target: x86_64-unknown-linux-gnu
-    runs-on: ${{ matrix.os && matrix.os || 'ubuntu-24.04' }}
+    runs-on: ${{ matrix.os && matrix.os || 'ubuntu-26.04' }}
     timeout-minutes: 25
     env:
       TARGET: ${{ matrix.target }}
@@ -240,7 +240,7 @@ jobs:
           # FIXME(ppc): SIGILL running tests, see
           # https://github.com/rust-lang/libc/pull/4254#issuecomment-2636288713
           # - target: powerpc-unknown-linux-gnu
-    runs-on: ${{ matrix.os && matrix.os || 'ubuntu-24.04' }}
+    runs-on: ${{ matrix.os && matrix.os || 'ubuntu-26.04' }}
     timeout-minutes: 25
     env:
       TARGET: ${{ matrix.target }}
@@ -362,7 +362,7 @@ jobs:
 
   ctest_msrv:
     name: Check ctest MSRV
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 10
     env:
       RUSTFLAGS: "" # No need to check warnings on old MSRV, clear `-Dwarnings`
@@ -384,7 +384,7 @@ jobs:
 
   docs:
     name: Ensure docs build
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 10
     steps:
     - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
@@ -399,7 +399,7 @@ jobs:
   # protection, rather than having to add each job separately.
   success:
     name: success
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     needs:
       - style_check
       - test_tier1
diff --git a/ci/run.sh b/ci/run.sh
index 96e5750945df4..c3a726b4c88b6 100755
--- a/ci/run.sh
+++ b/ci/run.sh
@@ -13,8 +13,9 @@ export RUSTFLAGS="${EXTRA_RUSTFLAGS:-} ${RUSTFLAGS:-}"
 
 echo "RUSTFLAGS: '$RUSTFLAGS'"
 
-# For logging
+# Print system and libc version for logging if available
 uname -a
+dpkg -l | grep libc- || true
 
 cmd="cargo test --target $target ${LIBC_CI_ZBUILD_STD+"-Zbuild-std"}"
 test_flags="--skip check_style"
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
index 4e3f8a1f4b678..b262ff8a142c7 100644
--- a/src/unix/linux_like/android/mod.rs
+++ b/src/unix/linux_like/android/mod.rs
@@ -3103,7 +3103,6 @@ pub const KERN_PROF: c_int = 6;
 pub const KERN_NODENAME: c_int = 7;
 pub const KERN_DOMAINNAME: c_int = 8;
 pub const KERN_PANIC: c_int = 15;
-pub const KERN_REALROOTDEV: c_int = 16;
 pub const KERN_SPARC_REBOOT: c_int = 21;
 pub const KERN_CTLALTDEL: c_int = 22;
 pub const KERN_PRINTK: c_int = 23;
@@ -3173,7 +3172,6 @@ pub const VM_SWAPPINESS: c_int = 19;
 pub const VM_LOWMEM_RESERVE_RATIO: c_int = 20;
 pub const VM_MIN_FREE_KBYTES: c_int = 21;
 pub const VM_MAX_MAP_COUNT: c_int = 22;
-pub const VM_LAPTOP_MODE: c_int = 23;
 pub const VM_BLOCK_DUMP: c_int = 24;
 pub const VM_HUGETLB_GROUP: c_int = 25;
 pub const VM_VFS_CACHE_PRESSURE: c_int = 26;
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 570ede87403a7..081b16d78ce39 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -3643,7 +3643,6 @@ pub const KERN_PROF: c_int = 6;
 pub const KERN_NODENAME: c_int = 7;
 pub const KERN_DOMAINNAME: c_int = 8;
 pub const KERN_PANIC: c_int = 15;
-pub const KERN_REALROOTDEV: c_int = 16;
 pub const KERN_SPARC_REBOOT: c_int = 21;
 pub const KERN_CTLALTDEL: c_int = 22;
 pub const KERN_PRINTK: c_int = 23;
@@ -3715,7 +3714,6 @@ pub const VM_SWAPPINESS: c_int = 19;
 pub const VM_LOWMEM_RESERVE_RATIO: c_int = 20;
 pub const VM_MIN_FREE_KBYTES: c_int = 21;
 pub const VM_MAX_MAP_COUNT: c_int = 22;
-pub const VM_LAPTOP_MODE: c_int = 23;
 pub const VM_BLOCK_DUMP: c_int = 24;
 pub const VM_HUGETLB_GROUP: c_int = 25;
 pub const VM_VFS_CACHE_PRESSURE: c_int = 26;