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test: test journalctl with corrupted journals

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Last month I monkey-patched journald to produce a small (64K) but valid
journal and used that as an input to four AFL fuzzers. After a month it
generated quite a nice corpora (4738 test cases) and after filtering
and minimizing it I was left with 619 unique journals with various
levels of corruption that probe the journal code.

It seems to detect past issues like systemd#26567, etc.
This commit is contained in:
Frantisek Sumsal 2023-04-29 12:01:37 +02:00
parent de965f4893
commit 0f69a4e9ae
2 changed files with 35 additions and 0 deletions
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test/test-journals/afl-corrupted-journals.tar.zst Normal file
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test/units/testsuite-04.sh
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@ -318,4 +318,39 @@ systemctl daemon-reload
systemctl restart systemd-journald.service
journalctl --rotate
# Corrupted journals
JOURNAL_DIR="$(mktemp -d)"
REMOTE_OUT="$(mktemp -d)"
# tar on C8S doesn't support the --zstd option
unzstd --stdout "/test-journals/afl-corrupted-journals.tar.zst" | tar -xC "$JOURNAL_DIR/"
# First, try each of them sequentially. Skip this part when running with plain
# QEMU, as it is excruciatingly slow
# Note: we care only about exit code 124 (timeout) and special bash exit codes
# >124 (like signals)
if [[ "$(systemd-detect-virt -v)" != "qemu" ]]; then
while read -r file; do
timeout 10 journalctl -b --file="$file" >/dev/null || [[ $? -lt 124 ]]
timeout 10 journalctl -o export --file="$file" >/dev/null || [[ $? -lt 124 ]]
if [[ -x /usr/lib/systemd/systemd-journal-remote ]]; then
timeout 10 /usr/lib/systemd/systemd-journal-remote \
--getter="journalctl -o export --file=$file" \
--split-mode=none \
--output="$REMOTE_OUT/system.journal" || [[ $? -lt 124 ]]
timeout 10 journalctl -b --directory="$REMOTE_OUT" >/dev/null || [[ $? -lt 124 ]]
rm -f "$REMOTE_OUT"/*
fi
done < <(find "$JOURNAL_DIR" -type f)
fi
# And now all at once
timeout 30 journalctl -b --directory="$JOURNAL_DIR" >/dev/null || [[ $? -lt 124 ]]
timeout 30 journalctl -o export --directory="$JOURNAL_DIR" >/dev/null || [[ $? -lt 124 ]]
if [[ -x /usr/lib/systemd/systemd-journal-remote ]]; then
timeout 30 /usr/lib/systemd/systemd-journal-remote \
--getter="journalctl -o export --directory=$JOURNAL_DIR" \
--split-mode=none \
--output="$REMOTE_OUT/system.journal" || [[ $? -lt 124 ]]
timeout 10 journalctl -b --directory="$REMOTE_OUT" >/dev/null || [[ $? -lt 124 ]]
rm -f "$REMOTE_OUT"/*
fi
touch /testok