Author: zhongbei.yk <zhongbei.yk@alibaba-inc.com>
Date:   Thu Dec 12 09:48:26 2024 +0800

    Fix buf_pool_validate_instance()
    
    It may appear that UT_LIST_GET_LEN(buf_pool->free) < n_free due to some
    bugs. So the code should be " UT_LIST_GET_LEN(buf_pool->free) != n_free ".

diff --git a/storage/innobase/buf/buf0buf.cc b/storage/innobase/buf/buf0buf.cc
index 6b330837a72..b84d462218b 100644
--- a/storage/innobase/buf/buf0buf.cc
+++ b/storage/innobase/buf/buf0buf.cc
@@ -6121,7 +6121,7 @@ static void buf_pool_validate_instance(buf_pool_t *buf_pool) {
   mutex_exit(&buf_pool->chunks_mutex);
 
   if (buf_pool->curr_size == buf_pool->old_size &&
-      UT_LIST_GET_LEN(buf_pool->free) > n_free) {
+      UT_LIST_GET_LEN(buf_pool->free) != n_free) {
     ib::fatal(UT_LOCATION_HERE, ER_IB_MSG_85)
         << "Free list len " << UT_LIST_GET_LEN(buf_pool->free)
         << ", free blocks " << n_free << ". Aborting...";