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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2022-08-04 14:10:06 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2022-08-04 14:10:06 -0400 |
| commit | 4c7b16312ea3381b04a412c91f1e882cd928806e (patch) | |
| tree | b3864c6cd8fa75f7ddd4b1b70c734c5ed737f611 /src/backend/executor/nodeModifyTable.c | |
| parent | 11e7d626cee43cf1eb5dd214ef001dfba38ea2a3 (diff) | |
| download | postgresql-4c7b16312ea3381b04a412c91f1e882cd928806e.tar.gz postgresql-4c7b16312ea3381b04a412c91f1e882cd928806e.zip | |
Add CHECK_FOR_INTERRUPTS in ExecInsert's speculative insertion loop.
Ordinarily the functions called in this loop ought to have plenty
of CFIs themselves; but we've now seen a case where no such CFI is
reached, making the loop uninterruptible. Even though that's from
a recently-introduced bug, it seems prudent to install a CFI at
the loop level in all branches.
Per discussion of bug #17558 from Andrew Kesper (an actual fix for
that bug will follow).
Discussion: https://postgr.es/m/17558-3f6599ffcf52fd4a@postgresql.org
Diffstat (limited to 'src/backend/executor/nodeModifyTable.c')
| -rw-r--r-- | src/backend/executor/nodeModifyTable.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/executor/nodeModifyTable.c b/src/backend/executor/nodeModifyTable.c index a49c3da5b6c..deda3215028 100644 --- a/src/backend/executor/nodeModifyTable.c +++ b/src/backend/executor/nodeModifyTable.c @@ -956,9 +956,11 @@ ExecInsert(ModifyTableContext *context, * * We loop back here if we find a conflict below, either during * the pre-check, or when we re-check after inserting the tuple - * speculatively. + * speculatively. Better allow interrupts in case some bug makes + * this an infinite loop. */ vlock: + CHECK_FOR_INTERRUPTS(); specConflict = false; if (!ExecCheckIndexConstraints(resultRelInfo, slot, estate, &conflictTid, arbiterIndexes)) |