Merge 10.0 into 10.1

extra/yassl/src/handshake.cpp

@@ -788,6 +788,16 @@ int DoProcessReply(SSL& ssl)
             needHdr = true;
         else {
             buffer >> hdr;
+            /*
+              According to RFC 4346 (see "7.4.1.3. Server Hello"), the Server Hello
+              packet needs to specify the highest supported TLS version, but not
+              higher than what client requests. YaSSL highest supported version is
+              TLSv1.1 (=3.2) - if the client requests a higher version, downgrade it
+              here to 3.2.
+              See also Appendix E of RFC 5246 (TLS 1.2)
+            */
+            if (hdr.version_.major_ == 3 && hdr.version_.minor_ > 2)
+              hdr.version_.minor_ = 2;
             ssl.verifyState(hdr);
         }
 

include/my_valgrind.h

@@ -35,6 +35,8 @@
 # define MEM_CHECK_DEFINED(a,len) VALGRIND_CHECK_MEM_IS_DEFINED(a,len)
 #elif defined(__SANITIZE_ADDRESS__)
 # include <sanitizer/asan_interface.h>
+/* How to do manual poisoning:
+https://github.com/google/sanitizers/wiki/AddressSanitizerManualPoisoning */
 # define MEM_UNDEFINED(a,len) ASAN_UNPOISON_MEMORY_REGION(a,len)
 # define MEM_NOACCESS(a,len) ASAN_POISON_MEMORY_REGION(a,len)
 # define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)

mysql-test/r/having.result

@@ -723,6 +723,20 @@ SELECT * FROM t1 JOIN t2 ON c1 = c2 HAVING c2 > 'a' ORDER BY c2 LIMIT 1;
 c1	c2
 x	x
 DROP TABLE t1,t2;
+#
+# MDEV-6736: Valgrind warnings 'Invalid read' in subselect_engine::calc_const_tables with SQ 
+# in WHERE and HAVING, ORDER BY, materialization+semijoin
+#
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (3),(8);
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (2),(1);
+SELECT a FROM t1
+WHERE 9 IN ( SELECT MIN( a ) FROM t1 )
+HAVING a <> ( SELECT COUNT(*) FROM t2 ) 
+ORDER BY a;
+a
+DROP TABLE t1,t2;
 End of 10.0 tests
 #
 # MDEV-10716: Assertion `real_type() != FIELD_ITEM' failed in

mysql-test/t/having.test

@@ -759,6 +759,24 @@ SELECT * FROM t1 JOIN t2 ON c1 = c2 HAVING c2 > 'a' ORDER BY c2 LIMIT 1;
 
 DROP TABLE t1,t2;
 
+--echo #
+--echo # MDEV-6736: Valgrind warnings 'Invalid read' in subselect_engine::calc_const_tables with SQ 
+--echo # in WHERE and HAVING, ORDER BY, materialization+semijoin
+--echo #
+
+CREATE TABLE t1 (a INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (3),(8);
+
+CREATE TABLE t2 (b INT) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (2),(1);
+
+SELECT a FROM t1
+WHERE 9 IN ( SELECT MIN( a ) FROM t1 )
+HAVING a <> ( SELECT COUNT(*) FROM t2 ) 
+ORDER BY a;
+
+DROP TABLE t1,t2;
+
 --echo End of 10.0 tests
 
 --echo #

storage/innobase/mem/mem0mem.cc

@@ -406,6 +406,11 @@ mem_heap_create_block_func(
 		heap->total_size += len;
 	}
 
+	/* Poison all available memory. Individual chunks will be unpoisoned on
+	every mem_heap_alloc() call. */
+	compile_time_assert(MEM_BLOCK_HEADER_SIZE >= sizeof *block);
+	UNIV_MEM_FREE(block + 1, len - sizeof *block);
+
 	ut_ad((ulint)MEM_BLOCK_HEADER_SIZE < len);
 
 	return(block);

storage/xtradb/mem/mem0mem.cc

@@ -406,6 +406,11 @@ mem_heap_create_block_func(
 		heap->total_size += len;
 	}
 
+	/* Poison all available memory. Individual chunks will be unpoisoned on
+	every mem_heap_alloc() call. */
+	compile_time_assert(MEM_BLOCK_HEADER_SIZE >= sizeof *block);
+	UNIV_MEM_FREE(block + 1, len - sizeof *block);
+
 	ut_ad((ulint)MEM_BLOCK_HEADER_SIZE < len);
 
 	return(block);