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BF-9552

Use-after-free in mongod when reloading view catalog on secondary. Fixed by SERVER-35929.

Setup

cd mongo
git checkout 6ed473ed3a122bebc1e932c946fe1c991dbd7ecb
python2 buildscripts/scons.py     \
    -j$(nproc)                    \
    --disable-warnings-as-errors  \
    mongo mongod
git checkout visemet/mongodb-rr-experiment
git am ../bf-9552/patches/0001-Remove-enableMajorityReadConcern-option-from-mongod.patch

rm -rf ~/.local/share/rr/*
python2 buildscripts/resmoke.py                         \
    -j$(( $(nproc) / 3 ))                               \
    --repeatTests=1000                                  \
    --continueOnFailure                                 \
    --log=file                                          \
    --reportFile=report.json                            \
    --rr=chaos                                          \
    --suite=concurrency_replication_causal_consistency  \
    jstests/concurrency/fsm_workloads/view_catalog_cycle_lookup.js

Results

The 1000 runs were manually interrupted due the replica set not making forward progress after the mongod process had aborted. This is a direct result of the forceSyncSourceCandidate failpoint preventing the secondaries later in the linear chain from choosing another sync source.

  • 5 / 563 when using --rr=chaos

    $ du -hs ~/.local/share/rr
20G     /home/ubuntu/.local/share/rr

  • Didn't attempt with --rr=record

  • Didn't attempt with --rr=off