I have this tested on Resolute with LTP upstream with tag 20260529. And this is
still reproducible, it still holds up 80% of the RAM on a 8G cloud instance
after the test.
So this is very likely related to the behaviour of systemd between releases.
Steps to reproduce this:
1. Get Resolute deployed on one of the following instances:
* AWS c6i.xlarge
* AWS c7g.xlarge
* GCE c4-highcpu-4
* GCE n4d-standard-4
2. Run the following command:
pkgs=(
automake
bc # LP: #2095286
bison
build-essential
byacc
flex
git
irqbalance
keyutils
libacl1-dev
libaio-dev
libcap-dev
libmm-dev
libnuma-dev
libsctp-dev
libselinux1-dev
libssl-dev
libtirpc-dev
pkg-config
quota
virt-what
xfslibs-dev
xfsprogs
)
series=$(lsb_release -cs)
flavour=$(uname -r | sed 's/.*-//')
target_flavours="aws azure gcp gke"
target_series="trusty xenial bionic focal jammy noble"
if echo "$target_flavours" | grep -qw "$flavour" && echo "$target_series" |
grep -qw "$series"; then
pkgs+=("linux-modules-extra-$(uname -r)")
fi
if [ "$flavour" != "kvm" ]; then
pkgs+=("nfs-kernel-server")
fi
if [ "$series" != "trusty" ]; then
pkgs+=("haveged")
fi
if echo "$series" | grep -Eq "xenial|bionic|focal"; then
pkgs+=("python-packaging")
fi
sudo apt install -y "${pkgs[@]}"
git clone https://git.launchpad.net/~canonical-kernel-team/+git/ltp -b sru
cd ltp
sed -i /ntfs/d lib/tst_supported_fs_types.c
make autotools
./configure
make -j"$(nproc)"
sudo make install
grep -e 14416 -e 36557 runtest/cve > /tmp/cve
sudo /opt/ltp/runltp -f /tmp/cve
3. Check the memory usage after test.
** Also affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Also affects: systemd (Ubuntu Resolute)
Importance: Undecided
Status: New
** Tags added: 7.0 resolute ubuntu-ltp ubuntu-ltp-cve
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https://bugs.launchpad.net/bugs/2158336
Title:
resolute systemd-udevd pinned after some LTP tests leading to OOM
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