buf0buf.c:

  Fix a bug: InnoDB could in a crash recovery print a big false corruption warning if the first page of an ibdata file was 'recreated' in the buffer pool; this could happen, for example, if a table was dropped, and the page used later


innobase/buf/buf0buf.c:
  Fix a bug: InnoDB could in a crash recovery print a big false corruption warning if the first page of an ibdata file was 'recreated' in the buffer pool; this could happen, for example, if a table was dropped, and the page used later

innobase/buf/buf0buf.c

@@ -1762,6 +1762,15 @@ buf_page_create(
 	buf_flush_free_margin();
 
 	frame = block->frame;
+
+	/* Reset to zero the file flush lsn field in the page; if the first
+	page of an ibdata file is 'created' in this function into the buffer
+	pool then we lose the original contents of the file flush lsn stamp.
+	Then InnoDB could in a crash recovery print a big, false, corruption
+	warning if the stamp contains an lsn bigger than the ib_logfile lsn. */
+
+	memset(frame + FIL_PAGE_FILE_FLUSH_LSN, 0, 8);
+
 #ifdef UNIV_DEBUG
 	buf_dbg_counter++;