Failing assertion: !rec_get_deleted_flag(rec, rec_offs_comp(offsets)) with debug 5.5 build

Standard seesaw test yielded on donor (debug build form 5.5 branch head):

130825 13:07:25 [Note] WSREP: Quorum results:
 version = 2,
 component = PRIMARY,
 conf_id = 5,
 members = 2/3 (joined/total),
 act_id = 3675,
 last_appl. = 3552,
 protocols = 0/4/2 (gcs/repl/appl),
 group UUID = bcabf528-0d6d-11e3-87ec-1e908c37032f
130825 13:07:25 [Note] WSREP: Flow-control interval: [28, 28]
130825 13:07:25 [Note] WSREP: New cluster view: global state: bcabf528-0d6d-11e3-87ec-1e908c37032f:3675, view# 6: Primary, number of nodes: 3, my index: 0, protocol version 2
130825 13:07:25 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
130825 13:07:25 [Note] WSREP: Assign initial position for certification: 3675, protocol version: 2
130825 13:07:26 InnoDB: Assertion failure in thread 140337117845248 in file row0sel.c line 2724
InnoDB: Failing assertion: !rec_get_deleted_flag(rec, rec_offs_comp(offsets))
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
10:07:26 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed,
something is definitely wrong and this may fail.

key_buffer_size=8388608
read_buffer_size=131072
max_used_connections=13
max_threads=1024
thread_count=13
connection_count=13
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2248592 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x20121c0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 7fa2c80ece50 thread_stack 0x40000
/run/shm/galera0/mysql/sbin/mysqld(my_print_stacktrace+0x38)[0x8e17aa]
/run/shm/galera0/mysql/sbin/mysqld(handle_fatal_signal+0x3af)[0x76cac7]
/lib/x86_64-linux-gnu/libpthread.so.0(+0xfbd0)[0x7fa2d904abd0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37)[0x7fa2d806a037]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7fa2d806d698]
/run/shm/galera0/mysql/sbin/mysqld[0x9c110d]
/run/shm/galera0/mysql/sbin/mysqld[0x9c2b38]
/run/shm/galera0/mysql/sbin/mysqld[0x97d366]
/run/shm/galera0/mysql/sbin/mysqld(_ZN7handler14index_read_mapEPhPKhm16ha_rkey_function+0x66)[0x777568]
/run/shm/galera0/mysql/sbin/mysqld(_ZN7handler18index_read_idx_mapEPhjPKhm16ha_rkey_function+0x6f)[0x775a79]
/run/shm/galera0/mysql/sbin/mysqld[0x63ee9a]
/run/shm/galera0/mysql/sbin/mysqld[0x63ea2e]
/run/shm/galera0/mysql/sbin/mysqld[0x6281f4]
/run/shm/galera0/mysql/sbin/mysqld(_ZN4JOIN8optimizeEv+0xb17)[0x62116d]
/run/shm/galera0/mysql/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x2cd)[0x626c4f]
/run/shm/galera0/mysql/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x195)[0x61ed4c]
/run/shm/galera0/mysql/sbin/mysqld[0x5f8900]
/run/shm/galera0/mysql/sbin/mysqld(_Z21mysql_execute_commandP3THD+0xc0e)[0x5f087a]
/run/shm/galera0/mysql/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x201)[0x5fb895]
/run/shm/galera0/mysql/sbin/mysqld[0x5fb0d9]
/run/shm/galera0/mysql/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0xc90)[0x5edb8d]
/run/shm/galera0/mysql/sbin/mysqld(_Z10do_commandP3THD+0x5b2)[0x5ecacd]
/run/shm/galera0/mysql/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x180)[0x6d5e01]
/run/shm/galera0/mysql/sbin/mysqld(handle_one_connection+0x33)[0x6d591b]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7f8e)[0x7fa2d9042f8e]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fa2d812ce1d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7fa270004bc0): SELECT * FROM comm02 WHERE p = 2
Connection ID (thread ID): 27
Status: NOT_KILLED

Never had this before, DONOR status is probably not essential - state request hasn't been processed yet.