MDEV-14140 IMPORT TABLESPACE must not go beyond FSP_FREE_LIMIT

ibuf_check_bitmap_on_import(): Only access the pages that
are below FSP_FREE_LIMIT. It is possible that especially with
ROW_FORMAT=COMPRESSED, the FSP_SIZE will be much bigger than
the FSP_FREE_LIMIT, and the bitmap pages (page_size*N, 1+page_size*N)
are filled with zero bytes.

buf_page_is_corrupted(), buf_page_io_complete(): Make the
fault injection compatible with MariaDB 10.2.

Backport the IMPORT tests from 10.2.

storage/innobase/buf/buf0buf.cc

@@ -577,6 +577,8 @@ buf_page_is_corrupted(
 	ulint		zip_size)	/*!< in: size of compressed page;
 					0 for uncompressed pages */
 {
+	DBUG_EXECUTE_IF("buf_page_import_corrupt_failure", return(TRUE); );
+
 	ulint		checksum_field1;
 	ulint		checksum_field2;
 
@@ -658,8 +660,6 @@ buf_page_is_corrupted(
 		return(FALSE);
 	}
 
-	DBUG_EXECUTE_IF("buf_page_is_corrupt_failure", return(TRUE); );
-
 	ulint	page_no = mach_read_from_4(read_buf + FIL_PAGE_OFFSET);
 	ulint	space_id = mach_read_from_4(read_buf + FIL_PAGE_SPACE_ID);
 	const srv_checksum_algorithm_t	curr_algo =
@@ -4216,7 +4216,7 @@ buf_page_io_complete(
 
 			/* Not a real corruption if it was triggered by
 			error injection */
-			DBUG_EXECUTE_IF("buf_page_is_corrupt_failure",
+			DBUG_EXECUTE_IF("buf_page_import_corrupt_failure",
 				if (bpage->space > TRX_SYS_SPACE
 				    && buf_mark_space_corrupt(bpage)) {
 					ib_logf(IB_LOG_LEVEL_INFO,
@@ -4279,7 +4279,7 @@ buf_page_io_complete(
 			}
 		}
 
-		DBUG_EXECUTE_IF("buf_page_is_corrupt_failure",
+		DBUG_EXECUTE_IF("buf_page_import_corrupt_failure",
 				page_not_corrupt:  bpage = bpage; );
 
 		if (recv_recovery_is_on()) {

storage/innobase/ibuf/ibuf0ibuf.cc

@@ -5099,7 +5099,20 @@ ibuf_check_bitmap_on_import(
 		return(DB_TABLE_NOT_FOUND);
 	}
 
-	size = fil_space_get_size(space_id);
+	mtr_t	mtr;
+	mtr_start(&mtr);
+	{
+		buf_block_t* sp = buf_page_get(space_id, zip_size, 0,
+					       RW_S_LATCH, &mtr);
+		if (sp) {
+			size = mach_read_from_4(
+				FSP_HEADER_OFFSET + FSP_FREE_LIMIT
+				+ sp->frame);
+		} else {
+			size = 0;
+		}
+	}
+	mtr_commit(&mtr);
 
 	if (size == 0) {
 		return(DB_TABLE_NOT_FOUND);
@@ -5110,7 +5123,6 @@ ibuf_check_bitmap_on_import(
 	page_size = zip_size ? zip_size : UNIV_PAGE_SIZE;
 
 	for (page_no = 0; page_no < size; page_no += page_size) {
-		mtr_t	mtr;
 		page_t*	bitmap_page;
 		ulint	i;
 

storage/xtradb/buf/buf0buf.cc

@@ -646,6 +646,8 @@ buf_page_is_corrupted(
 	ulint		zip_size)	/*!< in: size of compressed page;
 					0 for uncompressed pages */
 {
+	DBUG_EXECUTE_IF("buf_page_import_corrupt_failure", return(TRUE); );
+
 	ulint		checksum_field1;
 	ulint		checksum_field2;
 
@@ -727,8 +729,6 @@ buf_page_is_corrupted(
 		return(FALSE);
 	}
 
-	DBUG_EXECUTE_IF("buf_page_is_corrupt_failure", return(TRUE); );
-
 	ulint	page_no = mach_read_from_4(read_buf + FIL_PAGE_OFFSET);
 	ulint	space_id = mach_read_from_4(read_buf + FIL_PAGE_SPACE_ID);
 	const srv_checksum_algorithm_t	curr_algo =
@@ -4421,7 +4421,7 @@ buf_page_io_complete(
 
 			/* Not a real corruption if it was triggered by
 			error injection */
-			DBUG_EXECUTE_IF("buf_page_is_corrupt_failure",
+			DBUG_EXECUTE_IF("buf_page_import_corrupt_failure",
 				if (bpage->space > TRX_SYS_SPACE
 				    && buf_mark_space_corrupt(bpage)) {
 					ib_logf(IB_LOG_LEVEL_INFO,
@@ -4502,7 +4502,7 @@ buf_page_io_complete(
 		}
 		} /**/
 
-		DBUG_EXECUTE_IF("buf_page_is_corrupt_failure",
+		DBUG_EXECUTE_IF("buf_page_import_corrupt_failure",
 				page_not_corrupt:  bpage = bpage; );
 
 		if (recv_recovery_is_on()) {

storage/xtradb/ibuf/ibuf0ibuf.cc

@@ -5141,7 +5141,20 @@ ibuf_check_bitmap_on_import(
 		return(DB_TABLE_NOT_FOUND);
 	}
 
-	size = fil_space_get_size(space_id);
+	mtr_t	mtr;
+	mtr_start(&mtr);
+	{
+		buf_block_t* sp = buf_page_get(space_id, zip_size, 0,
+					       RW_S_LATCH, &mtr);
+		if (sp) {
+			size = mach_read_from_4(
+				FSP_HEADER_OFFSET + FSP_FREE_LIMIT
+				+ sp->frame);
+		} else {
+			size = 0;
+		}
+	}
+	mtr_commit(&mtr);
 
 	if (size == 0) {
 		return(DB_TABLE_NOT_FOUND);
@@ -5152,7 +5165,6 @@ ibuf_check_bitmap_on_import(
 	page_size = zip_size ? zip_size : UNIV_PAGE_SIZE;
 
 	for (page_no = 0; page_no < size; page_no += page_size) {
-		mtr_t	mtr;
 		page_t*	bitmap_page;
 		ulint	i;