bugfix: pgstromTaskStateResetScan() may reference uninitialized pg_state

issue reported at heterodb#700
charliettxx · Dec 25, 2023 · 346cd25 · 346cd25
1 parent 7d312e8
commit 346cd25
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/executor.c b/src/executor.c
@@ -748,6 +748,13 @@ pgstromTaskStateResetScan(pgstromTaskState *pts)
 	TableScanDesc scan = pts->css.ss.ss_currentScanDesc;
 	int		num_devs = 0;
 
+	/*
+	 * pgstromExecTaskState() is never called on the single process
+	 * execution, thus we have no state to reset.
+	 */
+	if (!ps_state)
+		return;
+
 	if ((pts->xpu_task_flags & DEVKIND__NVIDIA_GPU) != 0)
 		num_devs = numGpuDevAttrs;
 	else if ((pts->xpu_task_flags & DEVKIND__NVIDIA_DPU) != 0)