From f28e7bd0645d478d33d7ae3b974931c7991cd0bd Mon Sep 17 00:00:00 2001
From: Inaam Rana <inaam.rana@oracle.com>
Date: Fri, 18 Nov 2011 10:59:10 -0500
Subject: Bug#13390506 - VALGRIND FAILURE AFTER THE FIX FOR 13371000

rb://816
approved by: Marko Makela

The title is misleading. This bug was actually introduced by
bug 12635227 and was unearthed by a later optimization.
We need to free buf_page_t structs that we are allocating using
malloc() at shutdown.
---
 .../innodb_plugin/r/innodb_cmp_drop_table.result   | 13 +++++
 .../t/innodb_cmp_drop_table-master.opt             |  1 +
 .../innodb_plugin/t/innodb_cmp_drop_table.test     | 59 ++++++++++++++++++++++
 storage/innodb_plugin/buf/buf0buf.c                | 18 +++++++
 4 files changed, 91 insertions(+)
 create mode 100644 mysql-test/suite/innodb_plugin/r/innodb_cmp_drop_table.result
 create mode 100644 mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table-master.opt
 create mode 100644 mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table.test

diff --git a/mysql-test/suite/innodb_plugin/r/innodb_cmp_drop_table.result b/mysql-test/suite/innodb_plugin/r/innodb_cmp_drop_table.result
new file mode 100644
index 00000000000..bae2a17bd02
--- /dev/null
+++ b/mysql-test/suite/innodb_plugin/r/innodb_cmp_drop_table.result
@@ -0,0 +1,13 @@
+set global innodb_file_per_table=on;
+set global innodb_file_format=`1`;
+create table t1(a text) engine=innodb key_block_size=8;
+SELECT page_size FROM information_schema.innodb_cmpmem WHERE pages_used > 0;
+page_size
+8192
+drop table t1;
+SELECT page_size FROM information_schema.innodb_cmpmem WHERE pages_used > 0;
+page_size
+create table t2(a text) engine=innodb;
+SELECT page_size FROM information_schema.innodb_cmpmem WHERE pages_used > 0;
+page_size
+drop table t2;
diff --git a/mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table-master.opt b/mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table-master.opt
new file mode 100644
index 00000000000..a9a3d8c3db8
--- /dev/null
+++ b/mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table-master.opt
@@ -0,0 +1 @@
+--innodb-buffer-pool-size=8M
diff --git a/mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table.test b/mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table.test
new file mode 100644
index 00000000000..b40ab526615
--- /dev/null
+++ b/mysql-test/suite/innodb_plugin/t/innodb_cmp_drop_table.test
@@ -0,0 +1,59 @@
+-- source include/have_innodb_plugin.inc
+
+let $per_table=`select @@innodb_file_per_table`;
+let $format=`select @@innodb_file_format`;
+
+-- let $query_i_s = SELECT page_size FROM information_schema.innodb_cmpmem WHERE pages_used > 0
+
+set global innodb_file_per_table=on;
+set global innodb_file_format=`1`;
+ 
+create table t1(a text) engine=innodb key_block_size=8;
+
+-- disable_query_log
+
+# insert some rows so we are using compressed pages
+-- let $i = 10
+while ($i)
+{
+  insert into t1 values(repeat('abcdefghijklmnopqrstuvwxyz',100));
+  dec $i;
+}
+-- enable_query_log
+
+# we should be using some 8K pages
+-- eval $query_i_s
+
+drop table t1;
+
+# no lazy eviction at drop table in 5.1 there should still be no
+# used 8K pages
+-- eval $query_i_s
+
+# create a non-compressed table and insert enough into it to evict
+# compressed pages
+create table t2(a text) engine=innodb;
+
+-- disable_query_log
+
+-- let $i = 200
+while ($i)
+{
+  insert into t2 values(repeat('abcdefghijklmnopqrstuvwxyz',1000));
+  dec $i;
+}
+
+-- enable_query_log
+
+# now there should be no 8K pages in the buffer pool
+-- eval $query_i_s
+
+drop table t2;
+
+#
+# restore environment to the state it was before this test execution
+#
+
+-- disable_query_log
+eval set global innodb_file_format=$format;
+eval set global innodb_file_per_table=$per_table;
diff --git a/storage/innodb_plugin/buf/buf0buf.c b/storage/innodb_plugin/buf/buf0buf.c
index 7d03f08f61f..d88860b807b 100644
--- a/storage/innodb_plugin/buf/buf0buf.c
+++ b/storage/innodb_plugin/buf/buf0buf.c
@@ -946,6 +946,24 @@ buf_pool_free(void)
 {
 	buf_chunk_t*	chunk;
 	buf_chunk_t*	chunks;
+	buf_page_t*	bpage;
+
+	bpage = UT_LIST_GET_LAST(buf_pool->LRU);
+	while (bpage != NULL) {
+		buf_page_t*	prev_bpage = UT_LIST_GET_PREV(LRU, bpage);
+		enum buf_page_state	state = buf_page_get_state(bpage);
+
+		ut_ad(buf_page_in_file(bpage));
+		ut_ad(bpage->in_LRU_list);
+
+		if (state != BUF_BLOCK_FILE_PAGE) {
+			/* We must not have any dirty block. */
+			ut_ad(state == BUF_BLOCK_ZIP_PAGE);
+			buf_page_free_descriptor(bpage);
+		}
+
+		bpage = prev_bpage;
+	}
 
 	chunks = buf_pool->chunks;
 	chunk = chunks + buf_pool->n_chunks;
-- 
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