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LLVMJIT: Release JIT context after running ExprContext shutdown callbacks.

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Due to inlining it previously was possible that an ExprContext's
shutdown callback pointed to a JITed function. As the JIT context
previously was shut down before the shutdown callbacks were called,
that could lead to segfaults.  Fix the ordering.

Reported-By: Dmitry Dolgov
Author: Andres Freund
Discussion: https://postgr.es/m/CA+q6zcWO7CeAJtHBxgcHn_hj+PenM=tvG0RJ93X1uEJ86+76Ug@mail.gmail.com
Backpatch: 11-, where JIT compilation was added
This commit is contained in:
Andres Freund
2018-07-25 16:31:49 -07:00
parent bcafa263ec
commit 3acc4acd9b
2 changed files with 13 additions and 10 deletions
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5
src/backend/executor/execMain.c
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@ -47,7 +47,6 @@
#include "commands/trigger.h"
#include "executor/execdebug.h"
#include "foreign/fdwapi.h"
#include "jit/jit.h"
#include "mb/pg_wchar.h"
#include "miscadmin.h"
#include "optimizer/clauses.h"
@ -498,10 +497,6 @@ standard_ExecutorEnd(QueryDesc *queryDesc)
UnregisterSnapshot(estate->es_snapshot);
UnregisterSnapshot(estate->es_crosscheck_snapshot);
/* release JIT context, if allocated */
if (estate->es_jit)
jit_release_context(estate->es_jit);
/*
* Must switch out of context before destroying it
*/