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Fix CI driver builds after Ubuntu runner kernel updates #3263

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Merged
jpascucci-nv merged 3 commits into from
Oct 28, 2026
Merged

Fix CI driver builds after Ubuntu runner kernel updates #3263

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e912fa5
Fix CI driver builds after Ubuntu runner kernel updates
jpascucci-nv Oct 28, 2026
97c7336
Follow Ralf J's comments, but slightly better.
jpascucci-nv Oct 28, 2026
1cfdc45
Coderabbit's suggestion
jpascucci-nv Oct 28, 2026
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18 changes: 17 additions & 1 deletion ci/tools/install_gpu_driver.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,23 @@ in_container() {
}

host_install() {
apt-get -y install build-essential dkms "linux-headers-$(uname -r)" psmisc kmod
local kernel_release kernel_gcc default_gcc
kernel_release=$(uname -r)
apt-get -y install build-essential

# Match the kernel's GCC major only when the default compiler differs.
kernel_gcc=$(sed -nE 's/.*gcc(-[0-9]+)? (\([^)]*\) )?([0-9]+)\..*/\3/p' /proc/version)
default_gcc=$(gcc -dumpversion | cut -d. -f1)
echo "Kernel ${kernel_release}: GCC major=${kernel_gcc:-unknown}, default GCC major=${default_gcc}" >&2
if [ -n "$kernel_gcc" ] && [ "$kernel_gcc" != "$default_gcc" ]; then
apt-get -y install "gcc-${kernel_gcc}" "g++-${kernel_gcc}"
# Installing a versioned compiler does not change the default; select it for DKMS.
export CC="gcc-${kernel_gcc}" CXX="g++-${kernel_gcc}"
echo "Kernel ${kernel_release}: using CC=${CC} CXX=${CXX}" >&2
fi
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coderabbitai[bot] marked this conversation as resolved.

# Header installation can trigger DKMS builds, so select the compiler first.
apt-get -y install dkms "linux-headers-${kernel_release}" psmisc kmod

# Download and verify the installer before tearing down the existing
# host driver so a download failure or SHA-256 mismatch leaves the
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