Description:
Spurious failure seen in mysql-trunk-stage.
Assertion failed: pfs->m_refcount > 0, file /tmp/pb2/build/sb_0-2611430-1291128040.47/mysql-5.6.1-m5/storage/perfschema/pfs_instr_class.cc, line 956
The code is:
void release_table_share(PFS_table_share *pfs)
{
DBUG_ASSERT(pfs->m_refcount > 0);
pfs->m_refcount--;
}
Problem: PFS_table_share::m_refcount should use atomic operations,
since an exact count is required.
Full log:
main.handler_innodb w6 [ fail ]
Test ended at 2010-11-30 16:24:46
CURRENT_TEST: main.handler_innodb
mysqltest: In included file "./include/handler.inc": At line 407: query 'reap' failed: 2013: Lost connection to MySQL server during query
The result from queries just before the failure was:
< snip >
ERROR 42S02: Unknown table 'h1_3' in HANDLER
drop table t1;
drop table t2;
drop table t3;
drop table t4;
drop table t5;
create table t1 (c1 int);
insert into t1 values (1);
handler t1 open;
handler t1 read first;
c1
1
send the below to another connection, do not wait for the result
optimize table t1;
proceed with the normal connection
handler t1 read next;
c1
1
handler t1 close;
read the result from the other connection
More results from queries before failure can be found in /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/mysql-test/var-ps_row/6/log/handler_innodb.log
Server [mysqld.1 - pid: 13097, winpid: 13097, exit: 256] failed during test run
Server log from this test:
----------SERVER LOG START-----------
Assertion failed: pfs->m_refcount > 0, file /tmp/pb2/build/sb_0-2611430-1291128040.47/mysql-5.6.1-m5/storage/perfschema/pfs_instr_class.cc, line 956
101130 18:24:41 - 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=1048576
read_buffer_size=131072
max_used_connections=2
max_threads=151
thread_count=2
connection_count=2
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 60812 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
thd: 0x104a9b6a0
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...
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:my_print_stacktrace+0x38
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:handle_segfault+0x464
/lib/sparcv9/libc.so.1:0xd6fdc
/lib/sparcv9/libc.so.1:0xcab70
/lib/sparcv9/libc.so.1:0xcad7c
/lib/sparcv9/libc.so.1:__lwp_kill+0x8 [ Signal 6 (ABRT)]
/lib/sparcv9/libc.so.1:abort+0xd0
/lib/sparcv9/libc.so.1:_assert+0x74
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cTrelease_table_share6FpnPPFS_table_share__v_+0x50
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0xa88f88
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cLTABLE_SHAREHdestroy6M_v_+0x1b0
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cQfree_table_share6FpnLTABLE_SHARE__v_+0xfc
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0x24a624
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:my_hash_delete+0x5b4
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cTrelease_table_share6FpnLTABLE_SHARE__v_+0x1d8
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cIclosefrm6FpnFTABLE_b_i_+0x20c
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cSintern_close_table6FpnFTABLE__v_+0x16c
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0x24c1ac
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cSclose_thread_table6FpnDTHD_ppnFTABLE__b_+0x350
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cZclose_all_tables_for_name6FpnDTHD_pnLTABLE_SHARE_b_v_+0x1f4
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cRmysql_alter_table6FpnDTHD_pc2pnYst_ha_create_information_pnKTABLE_LIST_pnKAlter_info_IpnIst_order_b_b_+0x2db0
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cUmysql_recreate_table6FpnDTHD_pnKTABLE_LIST__b_+0x170
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0x41610c
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cWSql_cmd_optimize_tableHexecute6MpnDTHD__b_+0x198
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cVmysql_execute_command6FpnDTHD__i_+0x8bd8
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cLmysql_parse6FpnDTHD_pcIpnMParser_state__v_+0x308
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cQdispatch_command6FnTenum_server_command_pnDTHD_pcI_b_+0x834
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cKdo_command6FpnDTHD__b_+0x314
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cYdo_handle_one_connection6FpnDTHD__v_+0x338
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:handle_one_connection+0x2c
/tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:pfs_spawn_thread+0x158
/lib/sparcv9/libc.so.1:0xd6eb0
Please read http://dev.mysql.com/doc/refman/5.1/en/resolve-stack-dump.html
and follow instructions on how to resolve the stack trace.
Resolved stack trace is much more helpful in diagnosing the
problem, so please do resolve it
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 104a1ce90 = optimize table t1
thd->thread_id=15
thd->killed=NOT_KILLED
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
Writing a core file
----------SERVER LOG END-------------
How to repeat:
N/A
Suggested fix:
Use atomics for PFS_table_share::m_refcount
Description: Spurious failure seen in mysql-trunk-stage. Assertion failed: pfs->m_refcount > 0, file /tmp/pb2/build/sb_0-2611430-1291128040.47/mysql-5.6.1-m5/storage/perfschema/pfs_instr_class.cc, line 956 The code is: void release_table_share(PFS_table_share *pfs) { DBUG_ASSERT(pfs->m_refcount > 0); pfs->m_refcount--; } Problem: PFS_table_share::m_refcount should use atomic operations, since an exact count is required. Full log: main.handler_innodb w6 [ fail ] Test ended at 2010-11-30 16:24:46 CURRENT_TEST: main.handler_innodb mysqltest: In included file "./include/handler.inc": At line 407: query 'reap' failed: 2013: Lost connection to MySQL server during query The result from queries just before the failure was: < snip > ERROR 42S02: Unknown table 'h1_3' in HANDLER drop table t1; drop table t2; drop table t3; drop table t4; drop table t5; create table t1 (c1 int); insert into t1 values (1); handler t1 open; handler t1 read first; c1 1 send the below to another connection, do not wait for the result optimize table t1; proceed with the normal connection handler t1 read next; c1 1 handler t1 close; read the result from the other connection More results from queries before failure can be found in /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/mysql-test/var-ps_row/6/log/handler_innodb.log Server [mysqld.1 - pid: 13097, winpid: 13097, exit: 256] failed during test run Server log from this test: ----------SERVER LOG START----------- Assertion failed: pfs->m_refcount > 0, file /tmp/pb2/build/sb_0-2611430-1291128040.47/mysql-5.6.1-m5/storage/perfschema/pfs_instr_class.cc, line 956 101130 18:24:41 - 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=1048576 read_buffer_size=131072 max_used_connections=2 max_threads=151 thread_count=2 connection_count=2 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 60812 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd: 0x104a9b6a0 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... /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:my_print_stacktrace+0x38 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:handle_segfault+0x464 /lib/sparcv9/libc.so.1:0xd6fdc /lib/sparcv9/libc.so.1:0xcab70 /lib/sparcv9/libc.so.1:0xcad7c /lib/sparcv9/libc.so.1:__lwp_kill+0x8 [ Signal 6 (ABRT)] /lib/sparcv9/libc.so.1:abort+0xd0 /lib/sparcv9/libc.so.1:_assert+0x74 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cTrelease_table_share6FpnPPFS_table_share__v_+0x50 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0xa88f88 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cLTABLE_SHAREHdestroy6M_v_+0x1b0 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cQfree_table_share6FpnLTABLE_SHARE__v_+0xfc /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0x24a624 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:my_hash_delete+0x5b4 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cTrelease_table_share6FpnLTABLE_SHARE__v_+0x1d8 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cIclosefrm6FpnFTABLE_b_i_+0x20c /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cSintern_close_table6FpnFTABLE__v_+0x16c /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0x24c1ac /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cSclose_thread_table6FpnDTHD_ppnFTABLE__b_+0x350 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cZclose_all_tables_for_name6FpnDTHD_pnLTABLE_SHARE_b_v_+0x1f4 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cRmysql_alter_table6FpnDTHD_pc2pnYst_ha_create_information_pnKTABLE_LIST_pnKAlter_info_IpnIst_order_b_b_+0x2db0 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cUmysql_recreate_table6FpnDTHD_pnKTABLE_LIST__b_+0x170 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:0x41610c /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cWSql_cmd_optimize_tableHexecute6MpnDTHD__b_+0x198 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cVmysql_execute_command6FpnDTHD__i_+0x8bd8 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cLmysql_parse6FpnDTHD_pcIpnMParser_state__v_+0x308 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cQdispatch_command6FnTenum_server_command_pnDTHD_pcI_b_+0x834 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cKdo_command6FpnDTHD__b_+0x314 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:__1cYdo_handle_one_connection6FpnDTHD__v_+0x338 /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:handle_one_connection+0x2c /tmp/pb2/test/sb_1-2611529-1291128997.25/mysql-5.6.1-m5-solaris10-sparc-64bit-test/bin/mysqld:pfs_spawn_thread+0x158 /lib/sparcv9/libc.so.1:0xd6eb0 Please read http://dev.mysql.com/doc/refman/5.1/en/resolve-stack-dump.html and follow instructions on how to resolve the stack trace. Resolved stack trace is much more helpful in diagnosing the problem, so please do resolve it Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 104a1ce90 = optimize table t1 thd->thread_id=15 thd->killed=NOT_KILLED The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. Writing a core file ----------SERVER LOG END------------- How to repeat: N/A Suggested fix: Use atomics for PFS_table_share::m_refcount