memory leak in 5.5.32-MariaDB-1~wheezy-log

After running mariadb-5.5.32 in a multimaster for a few days its almost out of memory on the active master (the one getting all the reads).

The replication slave (same version) doesn't suffer the memory leak (with or without the replication filters defined).

Disabling the query cache on the active master may (was slightly off peak) have slowed the memory leak however it wasn't stopped. In the graph attached the query cache was disabled from Wed 5:30 to Thursday 03:00

For greeneggs-mysql_commands-day.png the first drop is when query cache was turned back on. At the end I moved the active master to the other server. Other graphs are for this same time interval.

Memory usage calculation:
From http://dev.mysql.com/doc/refman/5.5/en/memory-use.html

per connection:

@read_buffer_size + @read_rnd_buffer_size + @sort_buffer_size + @join_buffer_size + @binlog_cache_size + @thread_stack + @@tmp_table_size = 19070976

Max_used_connections 15

Static component:
@key_buffer_size + @query_cache_size + @innodb_buffer_pool_size + @innodb_additional_mem_pool_size + @@innodb_log_buffer_size
322961408

select 15 * 19070976 + 322961408; = 609026048
609M max

From top:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4532 mysql 20 0 1999m 1.4g 6072 S 4.0 71.9 1017:21 mysqld

I've still got the server running if more status is required.

show engine innodb status
=====================================
130830 0:46:23 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 17 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 372124 1_second, 372076 sleeps, 37113 10_second, 1716 background, 1715 flush
srv_master_thread log flush and writes: 350597
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 999301, signal count 1149136
Mutex spin waits 3647275, rounds 12020660, OS waits 198769
RW-shared spins 896419, rounds 19893071, OS waits 574516
RW-excl spins 68006, rounds 6887165, OS waits 204958
Spin rounds per wait: 3.30 mutex, 22.19 RW-shared, 101.27 RW-excl
--------
FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (write thread)
I/O thread 5 state: waiting for completed aio requests (write thread)
Pending normal aio reads: 0 [0, 0] , aio writes: 0 [0, 0] ,
ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
Pending flushes (fsync) log: 0; buffer pool: 0
7906118 OS file reads, 39186717 OS file writes, 23493355 OS fsyncs
0.65 reads/s, 16384 avg bytes/read, 66.29 writes/s, 29.06 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 287, seg size 289, 111478 merges
merged operations:
insert 106175, delete mark 100854, delete 13481
discarded operations:
insert 0, delete mark 0, delete 0
Hash table size 553229, node heap has 584 buffer(s)
244.87 hash searches/s, 22.53 non-hash searches/s
—
LOG
—
Log sequence number 1981376581482
Log flushed up to 1981376581482
Last checkpoint at 1981376562791
Max checkpoint age 84223550
Checkpoint age target 81591565
Modified age 18691
Checkpoint age 18691
0 pending log writes, 0 pending chkp writes
22419510 log i/o's done, 26.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total memory allocated 275644416; in additional pool allocated 0
Total memory allocated by read views 136
Internal hash tables (constant factor + variable factor)
Adaptive hash index 13998304 (4425832 + 9572472)
Page hash 277432 (buffer pool 0 only)
Dictionary cache 10287074 (1107952 + 9179122)
File system 648160 (82672 + 565488)
Lock system 665688 (664936 + 752)
Recovery system 0 (0 + 0)
Dictionary memory allocated 9179122
Buffer pool size 16383
Buffer pool size, bytes 268419072
Free buffers 1
Database pages 15798
Old database pages 5811
Modified db pages 97
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 10760065, not young 0
0.53 youngs/s, 0.00 non-youngs/s
Pages read 7903370, created 882751, written 16452888
0.65 reads/s, 0.00 creates/s, 39.47 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 15798, unzip_LRU len: 0
I/O sum[1550]:cur[322], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
1 read views open inside InnoDB
0 transactions active inside InnoDB
0 out of 1000 descriptors used
--OLDEST VIEW--
Normal read view
Read view low limit trx n:o 7D2D2F07
Read view up limit trx id 7D2D2F07
Read view low limit trx id 7D2D2F07
Read view individually stored trx ids:
-----------------
Main thread process no. 4532, id 140201824495360, state: sleeping
Number of rows inserted 1308400, updated 9736429, deleted 1227755, read 34888786828
1.00 inserts/s, 11.71 updates/s, 0.00 deletes/s, 249.22 reads/s
------------------------
LATEST DETECTED DEADLOCK
------------------------
130830 0:27:15

• • • (1) TRANSACTION:
      TRANSACTION 7D2C63D3, ACTIVE 0 sec starting index read

I'm planning on doing a debug build from MDEV-572 and maybe try to get valgrind to narrow it down (if that doesn't bring the server to a total halt). Better suggestions welcome.