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32327e7429
As described in systemd/systemd#27204 reexecuting the daemon while running in a systemd-run "session" causes the session end prematurely. Let's skip the Reexecute() method in dfuzzer and trigger it manually until the issue is resolved. (cherry picked from commit 914f280d0c0f1555ff94d5490dc4f264af7f331f) (cherry picked from commit 083ede14828bf38a8d786e185cd57d6d914025f7)
112 lines
3.5 KiB
Bash
Executable File
112 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eux
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set -o pipefail
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# Save the end.service state before we start fuzzing, as it might get changed
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# on the fly by one of the fuzzers
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systemctl list-jobs | grep -F 'end.service' && SHUTDOWN_AT_EXIT=1 || SHUTDOWN_AT_EXIT=0
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# shellcheck disable=SC2317
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at_exit() {
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set +e
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# We have to call the end.service/poweroff explicitly even if it's specified on
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# the kernel cmdline via systemd.wants=end.service, since dfuzzer calls
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# org.freedesktop.systemd1.Manager.ClearJobs() which drops the service
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# from the queue
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if [[ $SHUTDOWN_AT_EXIT -ne 0 ]] && ! systemctl poweroff; then
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# PID1 is down let's try to save the journal
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journalctl --sync # journal can be down as well so let's ignore exit codes here
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systemctl -ff poweroff # sync() and reboot(RB_POWER_OFF)
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fi
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}
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trap at_exit EXIT
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systemctl log-level info
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# FIXME: systemd-run doesn't play well with daemon-reexec
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# See: https://github.com/systemd/systemd/issues/27204
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sed -i '/\[org.freedesktop.systemd1\]/aorg.freedesktop.systemd1.Manager:Reexecute FIXME' /etc/dfuzzer.conf
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# TODO
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# * check for possibly newly introduced buses?
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BUS_LIST=(
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org.freedesktop.home1
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org.freedesktop.hostname1
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org.freedesktop.import1
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org.freedesktop.locale1
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org.freedesktop.login1
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org.freedesktop.machine1
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org.freedesktop.portable1
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org.freedesktop.resolve1
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org.freedesktop.systemd1
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org.freedesktop.timedate1
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)
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# systemd-oomd requires PSI
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if tail -n +1 /proc/pressure/{cpu,io,memory}; then
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BUS_LIST+=(
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org.freedesktop.oom1
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)
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fi
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# Some services require specific conditions:
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# - systemd-timesyncd can't run in a container
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# - systemd-networkd can run in a container if it has CAP_NET_ADMIN capability
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if ! systemd-detect-virt --container; then
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BUS_LIST+=(
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org.freedesktop.network1
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org.freedesktop.timesync1
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)
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elif busctl introspect org.freedesktop.network1 / &>/dev/null; then
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BUS_LIST+=(
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org.freedesktop.network1
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)
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fi
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SESSION_BUS_LIST=(
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org.freedesktop.systemd1
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)
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# Maximum payload size generated by dfuzzer (in bytes) - default: 50K
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PAYLOAD_MAX=50000
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# Tweak the maximum payload size if we're running under sanitizers, since
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# with larger payloads we start hitting reply timeouts
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if [[ -v ASAN_OPTIONS || -v UBSAN_OPTIONS ]]; then
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PAYLOAD_MAX=10000 # 10K
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fi
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# Overmount /var/lib/machines with a size-limited tmpfs, as fuzzing
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# the org.freedesktop.machine1 stuff makes quite a mess
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mount -t tmpfs -o size=50M tmpfs /var/lib/machines
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# Fuzz both the system and the session buses (where applicable)
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for bus in "${BUS_LIST[@]}"; do
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echo "Bus: $bus (system)"
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systemd-run --pipe --wait \
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-- dfuzzer -b "$PAYLOAD_MAX" -n "$bus"
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# Let's reload the systemd daemon to test (de)serialization as well
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systemctl daemon-reload
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# FIXME: explicitly trigger reexecute until systemd/systemd#27204 is resolved
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systemctl daemon-reexec
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done
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umount /var/lib/machines
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for bus in "${SESSION_BUS_LIST[@]}"; do
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echo "Bus: $bus (session)"
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systemd-run --machine 'testuser@.host' --user --pipe --wait \
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-- dfuzzer -b "$PAYLOAD_MAX" -n "$bus"
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# Let's reload the systemd user daemon to test (de)serialization as well
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systemctl --machine 'testuser@.host' --user daemon-reload
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# FIXME: explicitly trigger reexecute until systemd/systemd#27204 is resolved
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systemctl --machine 'testuser@.host' --user daemon-reexec
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done
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echo OK >/testok
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exit 0
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