2020-09-18  6:37:20 0 [Note] InnoDB: Initializing buffer pool, total size = 104857600, chunk size = 104857600

2020-09-18  6:37:20 0 [Note] InnoDB: Completed initialization of buffer pool

2020-09-18  6:37:21 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2020-09-18  6:37:21 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=3423646

2020-09-18  6:37:21 0 [Note] InnoDB: Starting final batch to recover 44 pages from redo log.

2020-09-18  6:37:22 0 [Note] InnoDB: Last binlog file './mysql-bin.000001', position 970415

[00] 2020-09-18 06:37:23 Last binlog file ./mysql-bin.000001, position 970415

2020-09-18 06:37:23 0x2bf14d750800  InnoDB: Assertion failure in file /home/mleich/Server/bb-10.5-MDEV-23399B/storage/innobase/fil/fil0fil.cc line 508

InnoDB: Failing assertion: n_pending_flushes == 0

diff --git a/storage/innobase/fil/fil0fil.cc b/storage/innobase/fil/fil0fil.cc

index f549938bfc2..84425e0d1b6 100644

--- a/storage/innobase/fil/fil0fil.cc

+++ b/storage/innobase/fil/fil0fil.cc

@@ -1601,7 +1601,8 @@ void fil_close_all_files()

 				if (!node->is_open()) {

 					goto next;

 				}

-				if (!node->n_pending) {

+				if (!node->n_pending

+				    && !node->n_pending_flushes) {

 					node->close();

 					goto next;

 				}

@@ -1609,7 +1610,9 @@ void fil_close_all_files()

 			ib::error() << "File '" << node->name

 				    << "' has " << node->n_pending

-				    << " operations";

+				    << " operations and "

+				    << node->n_pending_flushes

+				    << " flushes";

 		}

 		space = UT_LIST_GET_NEXT(space_list, space);