Public bug reported: What? --------
You will get SEGFAULT in mysqld with any custom plugin you built with default configuration with build-ps/build-binary.sh How to repeat? --------------------- I take vagrant ubuntu 12.04.4 - precise I take binary release http://www.percona.com/downloads/Percona-Server-5.5/Percona-Server-5.5.36-34.2/binary/debian/precise/x86_64/ I take sources http://www.percona.com/downloads/Percona-Server-5.5/Percona-Server-5.5.36-34.2/source/tarball/ I take custom engine plugin (i need sphinx/mysqlse) from http://sphinxsearch.com/files/sphinx-2.1.7-release.tar.gz 1) Build plugin. - place sphinx/mysqlse/* into storage/sphinx/ - use build-ps/build-binary.sh to do cmake configuration - go storage/sphinx/ && make && cp ha_sphinx.so /usr/lib/mysql/plugin/ha_sphinx.so 2) Install it. - mysql -e 'INSTALL PLUGIN sphinx SONAME "ha_sphinx.so"' 3) CREATE TABLE ... ENGINE=SPHINX; 4) Catch SEGFAULT Why is it happens? ------------------------- Sources have OPTION(WITH_FAST_MUTEXES "" ON) for UNIX in cmake/build_configurations/mysql_release.cmake. mysql_release.cmake is used to configure mysql release build system at build-ps/build-binary.sh (see cmake call). Someone built and published Percona-Server-5.5.36-34.2 without this option - WITH_FAST_MUTEXES. So mysql_mutex_t struct became shorter for 8 bytes, because of pthread_mutex_t not redefined in include/my_pthread.h How to fix? --------------- If you think release builds should not use WITH_FAST_MUTEXES - remove it from your build system configuration! If you think this WITH_FAST_MUTEXES must be enabled - rebuild, republish this and check how you are building. Anyway, your build scripts and configuration must be in sync, to what you are publishing. What to add more? -------------------------- Why are you stripping .comment section from binary? Where can i found actual version of compiler you use? (mysqlbug good?) How to debug? -------------------- gdb -p {mysqld} create table ... engine=sphinx you will catch segfault check in gdb: table.s.LOCK_ha_data, and sizeof (mysql_mutex_t), all further fields will be shifted by 8 bytes Sample SEGFAULT? ------------------------- #0 __memcpy_sse2_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:140 #1 0x00007fc764bb1023 in memcpy (__len=1, __src=0x22, __dest=0x7fc75c008340) at /usr/include/x86_64-linux-gnu/bits/string3.h:51 #2 sphDup (iLen=<optimized out>, sSrc=0x22 <error: Cannot access memory at address 0x22>) at /home/vagrant/percona-server-5.5.36-34.2/storage/sphinx/ha_sphinx.cc:921 #3 ParseUrl (share=share@entry=0x7fc7783ac780, table=table@entry=0x7fc7783ac930, bCreate=bCreate@entry=true) at /home/vagrant/percona-server-5.5.36-34.2/storage/sphinx/ha_sphinx.cc:1020 #4 0x00007fc764bb1440 in ha_sphinx::create (this=<optimized out>, name=0x7fc7783ae720 "./test/sphinx_heroes", table=0x7fc7783ac930) at /home/vagrant/percona-server-5.5.36-34.2/storage/sphinx/ha_sphinx.cc:3328 #5 0x00007fc77e62810b in ha_create_table(THD*, char const*, char const*, char const*, st_ha_create_information*, bool) () #6 0x00007fc77e5ba319 in rea_create_table(THD*, char const*, char const*, char const*, st_ha_create_information*, List<Create_field>&, unsigned int, st_key*, handler*) () #7 0x00007fc77e59274d in ?? () #8 0x00007fc77e592fcc in mysql_create_table(THD*, TABLE_LIST*, st_ha_create_information*, Alter_info*) () #9 0x00007fc77e536dea in mysql_execute_command(THD*) () #10 0x00007fc77e537d6a in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #11 0x00007fc77e539dea in dispatch_command(enum_server_command, THD*, char*, unsigned int) () #12 0x00007fc77e5cdbca in do_handle_one_connection(THD*) () #13 0x00007fc77e5cdc60 in handle_one_connection () #14 0x00007fc77d7c5182 in start_thread (arg=0x7fc7783b1700) at pthread_create.c:312 #15 0x00007fc77c26930d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 Sample TABLE_SHARE? ------------------------------- (gdb) x/70a 0x7fc7783ad200 0x7fc7783ad200: 0x2 0x0 0x7fc7783ad210: 0x0 0x0 0x7fc7783ad220: 0x0 0x0 0x7fc7783ad230: 0x0 0x0 0x7fc7783ad240: 0x0 0x0 0x7fc7783ad250: 0x0 0x0 0x7fc7783ad260: 0x0 0x0 0x7fc7783ad270: 0x7fc75c002900 0x7fc75c002d40 0x7fc7783ad280: 0x0 0x20 0x7fc7783ad290: 0x3e0 0x100000007 0x7fc7783ad2a0: 0x7fc77e5b36f0 <sql_alloc_error_handler> 0x1 0x7fc7783ad2b0: 0x0 0x7fc75c002b50 0x7fc7783ad2c0: 0x0 0x3 0x7fc7783ad2d0: 0x0 0x7fc75c002b30 0x7fc7783ad2e0: 0x0 0x0 --> start of LOCK_ha_data 0x7fc7783ad2f0: 0x0 0x0 0x7fc7783ad300: 0x0 0x0 0x7fc7783ad310: 0x0 0x0 --> must end here (without fast mutex) 0x7fc7783ad320: 0x0 (ends here with fast mutexes) 0x0 0x7fc7783ad330: 0x0 0x0 0x7fc7783ad340: 0x7fc75c002b10 0x0 0x7fc7783ad350: 0x0 0x7fc75c002910 0x7fc7783ad360: 0x0 0x7fc75c0029d0 0x7fc7783ad370: 0x7fc75c002b08 0x0 0x7fc7783ad380: 0x7fc77ef6ac00 <my_charset_utf8_general_ci> 0x7fc75c002c80 0x7fc7783ad390: 0xfffffff800000003 0x7fc75c002c80 0x7fc7783ad3a0: 0x0 0x7fc75c011b30 0x7fc7783ad3b0: 0x0 0x7fc75c011b30 0x7fc7783ad3c0: 0x4 0x7fc75c0115c0 0x7fc7783ad3d0: 0xd 0x7fc7783ae720 0x7fc7783ad3e0: 0x14 0x7fc7783ae720 0x7fc7783ad3f0: 0x14 0x7fc75c0029a8 0x7fc7783ad400: 0x22 0x1 0x7fc7783ad410: 0x0 0x0 0x7fc7783ad420: 0x0 0x0 ** Affects: percona-server Importance: Undecided Status: New ** Tags: api build plugin segfault sources ** Also affects: ubuntu Importance: Undecided Status: New ** No longer affects: ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1304470 Title: SEGFAULT with custom plugins >= 5.5.36-rel34.* To manage notifications about this bug go to: https://bugs.launchpad.net/percona-server/+bug/1304470/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
