Merge branch 'merge-xtradb-5.5' into 5.5

storage/xtradb/btr/btr0btr.c

@@ -76,7 +76,7 @@ btr_corruption_report(
 			       buf_block_get_zip_size(block),
 			       BUF_PAGE_PRINT_NO_CRASH);
 	}
-	buf_page_print(buf_block_get_frame_fast(block), 0, 0);
+	buf_page_print(buf_nonnull_block_get_frame(block), 0, 0);
 }
 
 #ifndef UNIV_HOTBACKUP
@@ -1077,7 +1077,7 @@ btr_get_size(
 	SRV_CORRUPT_TABLE_CHECK(root,
 	{
 		mtr_commit(mtr);
-		return(0);
+		return(ULINT_UNDEFINED);
 	});
 
 	if (flag == BTR_N_LEAF_PAGES) {

storage/xtradb/handler/ha_innodb.cc

@@ -469,6 +469,19 @@ innobase_is_fake_change(
 	THD*		thd) __attribute__((unused));	/*!< in: MySQL thread handle of the user for
 				  whom the transaction is being committed */
 
+/** Get the list of foreign keys referencing a specified table
+table.
+@param thd		The thread handle
+@param path		Path to the table
+@param f_key_list[out]	The list of foreign keys
+
+@return error code or zero for success */
+static
+int
+innobase_get_parent_fk_list(
+	THD*			thd,
+	const char*		path,
+	List<FOREIGN_KEY_INFO>*	f_key_list);
 
 /******************************************************************//**
 Maps a MySQL trx isolation level code to the InnoDB isolation level code
@@ -10008,7 +10021,14 @@ ha_innobase::check(
 
 		prebuilt->select_lock_type = LOCK_NONE;
 
-		if (!row_check_index_for_mysql(prebuilt, index, &n_rows)) {
+		bool check_result
+			= row_check_index_for_mysql(prebuilt, index, &n_rows);
+		DBUG_EXECUTE_IF(
+			"dict_set_index_corrupted",
+			if (!(index->type & DICT_CLUSTERED)) {
+				check_result = false;
+			});
+		if (!check_result) {
 			innobase_format_name(
 				index_name, sizeof index_name,
 				index->name, TRUE);
@@ -10344,6 +10364,73 @@ get_foreign_key_info(
 	return(pf_key_info);
 }
 
+/** Get the list of foreign keys referencing a specified table
+table.
+@param thd		The thread handle
+@param path		Path to the table
+@param f_key_list[out]	The list of foreign keys */
+static
+void
+fill_foreign_key_list(THD* thd,
+		      const dict_table_t* table,
+		      List<FOREIGN_KEY_INFO>* f_key_list)
+{
+	ut_ad(mutex_own(&dict_sys->mutex));
+
+	for (dict_foreign_t* foreign
+		     = UT_LIST_GET_FIRST(table->referenced_list);
+	     foreign != NULL;
+	     foreign = UT_LIST_GET_NEXT(referenced_list, foreign)) {
+
+		FOREIGN_KEY_INFO* pf_key_info
+			= get_foreign_key_info(thd, foreign);
+		if (pf_key_info) {
+			f_key_list->push_back(pf_key_info);
+		}
+	}
+}
+
+/** Get the list of foreign keys referencing a specified table
+table.
+@param thd		The thread handle
+@param path		Path to the table
+@param f_key_list[out]	The list of foreign keys
+
+@return error code or zero for success */
+static
+int
+innobase_get_parent_fk_list(
+	THD*			thd,
+	const char*		path,
+	List<FOREIGN_KEY_INFO>*	f_key_list)
+{
+	ut_a(strlen(path) <= FN_REFLEN);
+	char	norm_name[FN_REFLEN + 1];
+	normalize_table_name(norm_name, path);
+
+	trx_t*	parent_trx = check_trx_exists(thd);
+	parent_trx->op_info = "getting list of referencing foreign keys";
+	trx_search_latch_release_if_reserved(parent_trx);
+
+	mutex_enter(&dict_sys->mutex);
+
+	dict_table_t*	table
+		= dict_table_get_low(norm_name,
+				     static_cast<dict_err_ignore_t>(
+					     DICT_ERR_IGNORE_INDEX_ROOT
+					     | DICT_ERR_IGNORE_CORRUPT));
+	if (!table) {
+		mutex_exit(&dict_sys->mutex);
+		return(HA_ERR_NO_SUCH_TABLE);
+	}
+
+	fill_foreign_key_list(thd, table, f_key_list);
+
+	mutex_exit(&dict_sys->mutex);
+	parent_trx->op_info = "";
+	return(0);
+}
+
 /*******************************************************************//**
 Gets the list of foreign keys in this table.
 @return always 0, that is, always succeeds */
@@ -10392,9 +10479,6 @@ ha_innobase::get_parent_foreign_key_list(
 	THD*			thd,		/*!< in: user thread handle */
 	List<FOREIGN_KEY_INFO>*	f_key_list)	/*!< out: foreign key list */
 {
-	FOREIGN_KEY_INFO*	pf_key_info;
-	dict_foreign_t*		foreign;
-
 	ut_a(prebuilt != NULL);
 	update_thd(ha_thd());
 
@@ -10403,16 +10487,7 @@ ha_innobase::get_parent_foreign_key_list(
 	trx_search_latch_release_if_reserved(prebuilt->trx);
 
 	mutex_enter(&(dict_sys->mutex));
-
-	for (foreign = UT_LIST_GET_FIRST(prebuilt->table->referenced_list);
-	     foreign != NULL;
-	     foreign = UT_LIST_GET_NEXT(referenced_list, foreign)) {
-		pf_key_info = get_foreign_key_info(thd, foreign);
-		if (pf_key_info) {
-			f_key_list->push_back(pf_key_info);
-		}
-	}
-
+	fill_foreign_key_list(thd, prebuilt->table, f_key_list);
 	mutex_exit(&(dict_sys->mutex));
 
 	prebuilt->trx->op_info = "";
@@ -12817,7 +12892,6 @@ innodb_track_changed_pages_validate(
 						for update function */
 	struct st_mysql_value*		value)	/*!< in: incoming bool */
 {
-	static bool     enabled_on_startup = false;
 	long long	intbuf = 0;
 
 	if (value->val_int(value, &intbuf)) {
@@ -12825,8 +12899,7 @@ innodb_track_changed_pages_validate(
 		return 1;
 	}
 
-	if (srv_track_changed_pages || enabled_on_startup) {
-		enabled_on_startup = true;
+	if (srv_redo_log_thread_started) {
 		*reinterpret_cast<ulong*>(save)
 			= static_cast<ulong>(intbuf);
 		return 0;

storage/xtradb/include/buf0buf.h

@@ -1110,10 +1110,20 @@ buf_block_get_frame(
 /*================*/
 	const buf_block_t*	block)	/*!< in: pointer to the control block */
 	__attribute__((pure));
-# define buf_block_get_frame_fast(block) buf_block_get_frame(block)
+
+/*********************************************************************//**
+Gets a pointer to the memory frame of a block, where block is known not to be
+NULL.
+@return	pointer to the frame */
+UNIV_INLINE
+buf_frame_t*
+buf_nonnull_block_get_frame(
+	const buf_block_t*	block)	/*!< in: pointer to the control block */
+	__attribute__((pure));
+
 #else /* UNIV_DEBUG */
 # define buf_block_get_frame(block) (block ? (block)->frame : 0)
-# define buf_block_get_frame_fast(block) (block)->frame
+# define buf_nonnull_block_get_frame(block) ((block)->frame)
 #endif /* UNIV_DEBUG */
 /*********************************************************************//**
 Gets the space id of a block.

storage/xtradb/include/buf0buf.ic

@@ -718,6 +718,19 @@ buf_block_get_frame(
 {
 	SRV_CORRUPT_TABLE_CHECK(block, return(0););
 
+	return(buf_nonnull_block_get_frame(block));
+}
+
+/*********************************************************************//**
+Gets a pointer to the memory frame of a block, where block is known not to be
+NULL.
+@return	pointer to the frame */
+UNIV_INLINE
+buf_frame_t*
+buf_nonnull_block_get_frame(
+/*========================*/
+	const buf_block_t*	block)	/*!< in: pointer to the control block */
+{
 	switch (buf_block_get_state(block)) {
 	case BUF_BLOCK_ZIP_FREE:
 	case BUF_BLOCK_ZIP_PAGE:
@@ -739,6 +752,7 @@ buf_block_get_frame(
 ok:
 	return((buf_frame_t*) block->frame);
 }
+
 #endif /* UNIV_DEBUG */
 
 /*********************************************************************//**

storage/xtradb/include/srv0srv.h

@@ -78,6 +78,11 @@ extern os_event_t	srv_checkpoint_completed_event;
 that the (slow) shutdown may proceed */
 extern os_event_t	srv_redo_log_thread_finished_event;
 
+/** Whether the redo log tracker thread has been started. Does not take into
+account whether the tracking is currently enabled (see srv_track_changed_pages
+for that) */
+extern my_bool		srv_redo_log_thread_started;
+
 /* If the last data file is auto-extended, we add this many pages to it
 at a time */
 #define SRV_AUTO_EXTEND_INCREMENT	\
@@ -145,6 +150,9 @@ extern char*	srv_doublewrite_file;
 
 extern ibool	srv_recovery_stats;
 
+/** Whether the redo log tracking is currently enabled. Note that it is
+possible for the log tracker thread to be running and the tracking to be
+disabled */
 extern my_bool		srv_track_changed_pages;
 extern ib_uint64_t	srv_max_bitmap_file_size;
 

storage/xtradb/include/univ.i

@@ -64,10 +64,10 @@ component, i.e. we show M.N.P as M.N */
 	(INNODB_VERSION_MAJOR << 8 | INNODB_VERSION_MINOR)
 
 #ifndef PERCONA_INNODB_VERSION
-#define PERCONA_INNODB_VERSION 38.0
+#define PERCONA_INNODB_VERSION 38.3
 #endif
 
-#define INNODB_VERSION_STR	"5.5.49-MariaDB-" IB_TO_STR(PERCONA_INNODB_VERSION)
+#define INNODB_VERSION_STR	"5.5.52-MariaDB-" IB_TO_STR(PERCONA_INNODB_VERSION)
 
 #define REFMAN "http://dev.mysql.com/doc/refman/"	\
 	IB_TO_STR(MYSQL_MAJOR_VERSION) "."		\

storage/xtradb/log/log0log.c

@@ -3420,7 +3420,8 @@ logs_empty_and_mark_files_at_shutdown(void)
 	algorithm only works if the server is idle at shutdown */
 
 	srv_shutdown_state = SRV_SHUTDOWN_CLEANUP;
-	os_event_set(srv_shutdown_event);
+
+	srv_wake_purge_thread();
 loop:
 	os_thread_sleep(100000);
 
@@ -3594,7 +3595,7 @@ logs_empty_and_mark_files_at_shutdown(void)
 		srv_shutdown_state = SRV_SHUTDOWN_LAST_PHASE;
 		/* Wake the log tracking thread which will then immediatelly
 		quit because of srv_shutdown_state value */
-		if (srv_track_changed_pages) {
+		if (srv_redo_log_thread_started) {
 			os_event_set(srv_checkpoint_completed_event);
 			os_event_wait(srv_redo_log_thread_finished_event);
 		}
@@ -3671,7 +3672,7 @@ logs_empty_and_mark_files_at_shutdown(void)
 	srv_shutdown_state = SRV_SHUTDOWN_LAST_PHASE;
 
 	/* Signal the log following thread to quit */
-	if (srv_track_changed_pages) {
+	if (srv_redo_log_thread_started) {
 		os_event_set(srv_checkpoint_completed_event);
 	}
 
@@ -3695,7 +3696,7 @@ logs_empty_and_mark_files_at_shutdown(void)
 
 	fil_flush_file_spaces(FIL_TABLESPACE);
 
-	if (srv_track_changed_pages) {
+	if (srv_redo_log_thread_started) {
 		os_event_wait(srv_redo_log_thread_finished_event);
 	}
 

storage/xtradb/log/log0online.c

@@ -1813,7 +1813,7 @@ log_online_purge_changed_page_bitmaps(
 		lsn = IB_ULONGLONG_MAX;
 	}
 
-	if (srv_track_changed_pages) {
+	if (srv_redo_log_thread_started) {
 		/* User requests might happen with both enabled and disabled
 		tracking */
 		mutex_enter(&log_bmp_sys->mutex);
@@ -1821,13 +1821,13 @@ log_online_purge_changed_page_bitmaps(
 
 	if (!log_online_setup_bitmap_file_range(&bitmap_files, 0,
 						IB_ULONGLONG_MAX)) {
-		if (srv_track_changed_pages) {
+		if (srv_redo_log_thread_started) {
 			mutex_exit(&log_bmp_sys->mutex);
 		}
 		return TRUE;
 	}
 
-	if (srv_track_changed_pages && lsn > log_bmp_sys->end_lsn) {
+	if (srv_redo_log_thread_started && lsn > log_bmp_sys->end_lsn) {
 		/* If we have to delete the current output file, close it
 		first. */
 		os_file_close(log_bmp_sys->out.file);
@@ -1858,7 +1858,7 @@ log_online_purge_changed_page_bitmaps(
 		}
 	}
 
-	if (srv_track_changed_pages) {
+	if (srv_redo_log_thread_started) {
 		if (lsn > log_bmp_sys->end_lsn) {
 			ib_uint64_t	new_file_lsn;
 			if (lsn == IB_ULONGLONG_MAX) {
@@ -1869,9 +1869,7 @@ log_online_purge_changed_page_bitmaps(
 				new_file_lsn = log_bmp_sys->end_lsn;
 			}
 			if (!log_online_rotate_bitmap_file(new_file_lsn)) {
-				/* If file create failed, signal the log
-				tracking thread to quit next time it wakes
-				up.  */
+				/* If file create failed, stop log tracking */
 				srv_track_changed_pages = FALSE;
 			}
 		}

storage/xtradb/log/log0recv.c

@@ -3022,7 +3022,7 @@ recv_recovery_from_checkpoint_start_func(
 	ib_uint64_t	checkpoint_lsn;
 	ib_uint64_t	checkpoint_no;
 	ib_uint64_t	old_scanned_lsn;
-	ib_uint64_t	group_scanned_lsn= 0;
+	ib_uint64_t	group_scanned_lsn = 0;
 	ib_uint64_t	contiguous_lsn;
 #ifdef UNIV_LOG_ARCHIVE
 	ib_uint64_t	archived_lsn;

storage/xtradb/mach/mach0data.c

@@ -56,7 +56,18 @@ mach_parse_compressed(
 		*val = flag;
 		return(ptr + 1);
 
-	} else if (flag < 0xC0UL) {
+	}
+
+	/* Workaround GCC bug
+	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77673:
+	the compiler moves mach_read_from_4 right to the beginning of the
+	function, causing and out-of-bounds read if we are reading a short
+	integer close to the end of buffer. */
+#if defined(__GNUC__) && (__GNUC__ >= 5) && !defined(__clang__)
+	asm volatile("": : :"memory");
+#endif
+
+	if (flag < 0xC0UL) {
 		if (end_ptr < ptr + 2) {
 			return(NULL);
 		}

storage/xtradb/srv/srv0srv.c

@@ -180,6 +180,9 @@ UNIV_INTERN char*	srv_doublewrite_file = NULL;
 
 UNIV_INTERN ibool	srv_recovery_stats = FALSE;
 
+/** Whether the redo log tracking is currently enabled. Note that it is
+possible for the log tracker thread to be running and the tracking to be
+disabled */
 UNIV_INTERN my_bool	srv_track_changed_pages = FALSE;
 
 UNIV_INTERN ib_uint64_t	srv_max_bitmap_file_size = 100 * 1024 * 1024;
@@ -830,6 +833,11 @@ UNIV_INTERN os_event_t	srv_checkpoint_completed_event;
 
 UNIV_INTERN os_event_t	srv_redo_log_thread_finished_event;
 
+/** Whether the redo log tracker thread has been started. Does not take into
+account whether the tracking is currently enabled (see srv_track_changed_pages
+for that) */
+UNIV_INTERN my_bool	srv_redo_log_thread_started = FALSE;
+
 UNIV_INTERN srv_sys_t*	srv_sys	= NULL;
 
 /* padding to prevent other memory update hotspots from residing on
@@ -3201,18 +3209,15 @@ srv_redo_log_follow_thread(
 #endif
 
 	my_thread_init();
+	srv_redo_log_thread_started = TRUE;
 
 	do {
 		os_event_wait(srv_checkpoint_completed_event);
 		os_event_reset(srv_checkpoint_completed_event);
 
-#ifdef UNIV_DEBUG
-		if (!srv_track_changed_pages) {
-			continue;
-		}
-#endif
+		if (srv_track_changed_pages
+		    && srv_shutdown_state < SRV_SHUTDOWN_LAST_PHASE) {
 
-		if (srv_shutdown_state < SRV_SHUTDOWN_LAST_PHASE) {
 			if (!log_online_follow_redo_log()) {
 				/* TODO: sync with I_S log tracking status? */
 				fprintf(stderr,
@@ -3228,6 +3233,7 @@ srv_redo_log_follow_thread(
 	srv_track_changed_pages = FALSE;
 	log_online_read_shutdown();
 	os_event_set(srv_redo_log_thread_finished_event);
+	srv_redo_log_thread_started = FALSE; /* Defensive, not required */
 
 	my_thread_end();
 	os_thread_exit(NULL);
@@ -3349,7 +3355,7 @@ srv_master_do_purge(void)
 
 	ut_ad(!mutex_own(&kernel_mutex));
 
-	ut_a(srv_n_purge_threads == 0 || (srv_shutdown_state > 0 && srv_n_threads_active[SRV_WORKER] == 0));
+	ut_a(srv_n_purge_threads == 0);
 
 	do {
 		/* Check for shutdown and change in purge config. */
@@ -3875,7 +3881,7 @@ srv_master_thread(
 	/* Flush logs if needed */
 	srv_sync_log_buffer_in_background();
 
-	if (srv_n_purge_threads == 0 || (srv_shutdown_state > 0 && srv_n_threads_active[SRV_WORKER] == 0)) {
+	if (srv_n_purge_threads == 0) {
 		srv_main_thread_op_info = "master purging";
 
 		srv_master_do_purge();
@@ -3953,7 +3959,7 @@ srv_master_thread(
 		}
 	}
 
-	if (srv_n_purge_threads == 0 || (srv_shutdown_state > 0 && srv_n_threads_active[SRV_WORKER] == 0)) {
+	if (srv_n_purge_threads == 0) {
 		srv_main_thread_op_info = "master purging";
 
 		srv_master_do_purge();
@@ -4170,9 +4176,10 @@ srv_purge_thread(
 	        We peek at the history len without holding any mutex
 		because in the worst case we will end up waiting for
 		the next purge event. */
-		if (trx_sys->rseg_history_len < srv_purge_batch_size
+		if (srv_shutdown_state == SRV_SHUTDOWN_NONE
+		    && (trx_sys->rseg_history_len < srv_purge_batch_size
 			|| (n_total_purged == 0
-			&& retries >= TRX_SYS_N_RSEGS)) {
+			    && retries >= TRX_SYS_N_RSEGS))) {
 
 			mutex_enter(&kernel_mutex);
 
@@ -4187,8 +4194,12 @@ srv_purge_thread(
 
 		/* Check for shutdown and whether we should do purge at all. */
 		if (srv_force_recovery >= SRV_FORCE_NO_BACKGROUND
-		    || srv_shutdown_state != 0
-		    || srv_fast_shutdown) {
+		    || (srv_shutdown_state != SRV_SHUTDOWN_NONE
+			&& srv_fast_shutdown)
+		    || (srv_shutdown_state != SRV_SHUTDOWN_NONE
+			&& srv_fast_shutdown == 0
+			&& n_total_purged == 0
+			&& retries >= TRX_SYS_N_RSEGS)) {
 
 			break;
 		}
@@ -4211,6 +4222,9 @@ srv_purge_thread(
 
 		srv_sync_log_buffer_in_background();
 
+		if (srv_shutdown_state != SRV_SHUTDOWN_NONE)
+			continue;
+
 		cur_time = ut_time_ms();
 		sig_count = os_event_reset(srv_shutdown_event);
 		if (next_itr_time > cur_time) {