Fix: fix bug When the TDE feature is enabled, backend panic will cause the database to be in an abnormal state

When the backend process panics and the postmaster restarts the database,
it is necessary to reinitialize the shared memory related to TDE and
set the relevant global variables.

Author: kongfanshen

src/backend/postmaster/postmaster.c

@@ -1541,9 +1541,6 @@ PostmasterMain(int argc, char *argv[])
 	}
 #endif
 
-	InitializeKmgr();
-	InitializeBufferEncryption();
-
 	if (terminal_fd != -1)
 		close(terminal_fd);
 
@@ -3202,6 +3199,14 @@ reset_shared(void)
 	 * clean up dead IPC objects if the postmaster crashes and is restarted.
 	 */
 	CreateSharedMemoryAndSemaphores();
+
+	/*
+	 * When backend process crashes, postmaster restart database,
+	 * we need to init kmgr share memory.
+	 */
+	InitializeKmgr();
+	InitializeBufferEncryption();
+
 }