full stack #2 crash must be due to I_S query catching Thread 26 at a wrong time
Thread 26 (Thread 0x7f09f47f5700 (LWP 115689)): #0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 #1 0x00007f09f42c84ef in _L_lock_1081 () from /lib/x86_64-linux-gnu/libpthread.so.0 #2 0x00007f09f42c8468 in __GI___pthread_mutex_lock (mutex=0x7ef1be3db0e0) at ../nptl/pthread_mutex_lock.c:134 #3 0x000000000067b077 in inline_mysql_mutex_lock (src_line=2194, src_file=0xb812a0 "/mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sql_base.cc", that=0x7ef1be3db0e0) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/include/mysql/psi/mysql_thread.h:688 #4 close_temporary_table (thd=thd@entry=0x7ef1be3db000, table=table@entry=0x7ef1bfceec00, free_share=free_share@entry=true, delete_table=delete_table@entry=true) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sql_base.cc:2194 #5 0x000000000067b12f in drop_temporary_table (thd=thd@entry=0x7ef1be3db000, table_list=table_list@entry=0x7ef1bffeb2a0, is_trans=is_trans@entry=0x7f09f47f1072) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sql_base.cc:2177 #6 0x000000000071af22 in mysql_rm_table_no_locks (thd=thd@entry=0x7ef1be3db000, tables=tables@entry=0x7ef1bffeb2a0, if_exists=true, drop_temporary=false, drop_view=drop_view@entry=false, dont_log_query=dont_log_query@entry=false) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sql_table.cc:2387 #7 0x000000000071c32e in mysql_rm_table (thd=thd@entry=0x7ef1be3db000, tables=tables@entry=0x7ef1bffeb2a0, if_exists=<optimized out>, drop_temporary=<optimized out>) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sql_table.cc:2224 #8 0x00000000006c64c8 in mysql_execute_command (thd=thd@entry=0x7ef1be3db000) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sql_parse.cc:4105 #9 0x00000000007e9d13 in sp_instr_stmt::exec_core (this=0x7ef1bffe3ad8, thd=0x7ef1be3db000, nextp=0x7f09f47f2384) at /mnt/workspace/percona-server-5.6-debian-binary/label_exp/debian-jessie-64bit/percona-server-5.6-5.6.29-76.2/sql/sp_instr.cc:953 ...
full stack #2 crash must be due to I_S query catching Thread 26 at a wrong time
Thread 26 (Thread 0x7f09f47f5700 (LWP 115689)): sysdeps/ unix/sysv/ linux/x86_ 64/lowlevellock .S:135 64-linux- gnu/libpthread. so.0 pthread_ mutex_lock (mutex= 0x7ef1be3db0e0) at ../nptl/ pthread_ mutex_lock. c:134 mysql_mutex_ lock (src_line=2194, src_file=0xb812a0 "/mnt/workspace /percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sql_ base.cc" , that=0x7ef1be3d b0e0) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ include/ mysql/psi/ mysql_thread. h:688 _table (thd=thd@ entry=0x7ef1be3 db000, table=table@ entry=0x7ef1bfc eec00, free_share= free_share@ entry=true, delete_ table=delete_ table@entry= true) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sql_ base.cc: 2194 table (thd=thd@ entry=0x7ef1be3 db000, table_list= table_list@ entry=0x7ef1bff eb2a0, is_trans= is_trans@ entry=0x7f09f47 f1072) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sql_ base.cc: 2177 table_no_ locks (thd=thd@ entry=0x7ef1be3 db000, tables= tables@ entry=0x7ef1bff eb2a0, if_exists=true, drop_temporary= false, drop_view= drop_view@ entry=false, dont_log_ query=dont_ log_query@ entry=false) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sql_ table.cc: 2387 entry=0x7ef1be3 db000, tables= tables@ entry=0x7ef1bff eb2a0, if_exists= <optimized out>, drop_temporary= <optimized out>) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sql_ table.cc: 2224 command (thd=thd@ entry=0x7ef1be3 db000) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sql_ parse.cc: 4105 stmt::exec_ core (this=0x7ef1bff e3ad8, thd=0x7ef1be3db000, nextp=0x7f09f47 f2384) at /mnt/workspace/ percona- server- 5.6-debian- binary/ label_exp/ debian- jessie- 64bit/percona- server- 5.6-5.6. 29-76.2/ sql/sp_ instr.cc: 953
#0 __lll_lock_wait () at ../nptl/
#1 0x00007f09f42c84ef in _L_lock_1081 () from /lib/x86_
#2 0x00007f09f42c8468 in __GI___
#3 0x000000000067b077 in inline_
#4 close_temporary
#5 0x000000000067b12f in drop_temporary_
#6 0x000000000071af22 in mysql_rm_
#7 0x000000000071c32e in mysql_rm_table (thd=thd@
#8 0x00000000006c64c8 in mysql_execute_
#9 0x00000000007e9d13 in sp_instr_
...