MDEV-26121 [Note] InnoDB: Resetting invalid page

In dict_index_t::clear(), InnoDB frees all the page except root page.
root page leaf segment has reset and does reinitialize again.
t in fseg_create(), we do have the assumption that only
FIL_PAGE_TYPE_TRX_SYS or FIL_PAGE_TYPE_TRX_SYS page should
be re-created for non-full-crc32 format. This assumption is wrong
in case of rollback of bulk insert operation.

Author: Thirunarayanan

storage/innobase/fsp/fsp0fsp.cc

@@ -1709,18 +1709,7 @@ fseg_create(fil_space_t *space, ulint byte_offset, mtr_t *mtr,
 	mtr->x_lock_space(space);
 	ut_d(space->modify_check(*mtr));
 
-	if (block) {
-		ut_ad(block->page.id().space() == space->id);
-
-		if (!space->full_crc32()) {
-			fil_block_check_type(*block, block->page.id()
-					     == page_id_t(TRX_SYS_SPACE,
-							  TRX_SYS_PAGE_NO)
-					     ? FIL_PAGE_TYPE_TRX_SYS
-					     : FIL_PAGE_TYPE_SYS,
-					     mtr);
-		}
-	}
+	ut_ad(!block || block->page.id().space() == space->id);
 
 	if (!has_done_reservation
 	    && !fsp_reserve_free_extents(&n_reserved, space, 2,