Last one has different resulting stack

#2  0x000000000072ca03 in handle_fatal_signal (sig=11) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/signal_handler.cc:236
#3  <signal handler called>
#4  0x0000000000b3ce59 in pfs_mutex_enter_func (mutex=0x200460, file_name=0x1040f50 "/mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/storage/innobase/log/log0online.cc", line=1801) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/storage/innobase/include/sync0sync.ic:360
#5  0x0000000000b4054f in log_online_purge_changed_page_bitmaps (lsn=200) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/storage/innobase/log/log0online.cc:1801
#6  0x0000000000aca1a1 in innobase_purge_changed_page_bitmaps (lsn=200) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/storage/innobase/handler/ha_innodb.cc:3857
#7  0x0000000000649179 in purge_changed_page_bitmaps_handlerton (unused1=0x0, plugin=0x7fcfa1049bb8, lsn=0x7fcfa1049c08) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/handler.cc:7314
#8  0x00000000007f5187 in plugin_foreach_with_mask (thd=0x0, func=0x649128 <purge_changed_page_bitmaps_handlerton(THD*, plugin_ref, void*)>, type=1, state_mask=4294967287, arg=0x7fcfa1049c08) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_plugin.cc:2162
#9  0x00000000006491a9 in ha_purge_changed_page_bitmaps (lsn=200) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/handler.cc:7319
#10 0x00000000007e0030 in mysql_execute_command (thd=0x1e45250) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_parse.cc:3017
#11 0x00000000007ea051 in mysql_parse (thd=0x1e45250, rawbuf=0x7fcf641e6d70 "PURGE CHANGED_PAGE_BITMAPS BEFORE 200", length=37, parser_state=0x7fcfa104ae30) at/mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_parse.cc:6744
#12 0x00000000007dc5ec in dispatch_command (command=COM_QUERY, thd=0x1e45250, packet=0x263d4e1 "PURGE CHANGED_PAGE_BITMAPS BEFORE 200;", packet_length=38) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_parse.cc:1432
#13 0x00000000007db518 in do_command (thd=0x1e45250) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_parse.cc:1049
#14 0x00000000007a34d5 in do_handle_one_connection (thd_arg=0x1e45250) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_connect.cc:1532
#15 0x00000000007a2fdd in handle_one_connection (arg=0x1e45250) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/sql/sql_connect.cc:1443
#16 0x0000000000dbdbb8 in pfs_spawn_thread (arg=0x25b13f0) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.20-68.0/storage/perfschema/pfs.cc:1860