Fix possible crash due to incorrect allocation context.
Commit af33039317ddc4a0e38a02e2255c2bf453115fd2 aimed to reduce
leakage from tqueue.c, which is good. Unfortunately, by changing the
memory context in which all of gather_readnext() executes, it also
changed the context in which ExecShutdownGatherWorkers executes, which
is not good, because that function eventually causes a call to
ExecParallelRetrieveInstrumentation, which proceeds to allocate
planstate->worker_instrument in a short-lived context, causing a
crash.
Rushabh Lathia, reviewed by Amit Kapila and by me.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/41fb35fabf03bffa812caddf24323d4d06f811ba
Modified Files
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src/backend/executor/execParallel.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)