| Bug #50565 | NdbDictionary::getTable crashes in thread on utf8 tables | ||
|---|---|---|---|
| Submitted: | 23 Jan 2010 13:57 | Modified: | 29 Jul 2016 0:31 |
| Reporter: | Stan Sawa | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Cluster: NDB API | Severity: | S3 (Non-critical) |
| Version: | mysql-5.1-telco-7.0 | OS: | Linux |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | 7.0.9 | ||
[23 Jan 2010 15:34]
Stan Sawa
full backtrace:
Program terminated with signal 11, Segmentation fault.
#0 my_stat (path=0x7ffff6678700 "/usr/local/mysql/share/charsets/Index.xml", stat_area=0x7ffff6678640, my_flags=0) at my_lib.c:543
543 my_lib.c: No such file or directory.
in my_lib.c
(gdb) bt
#0 my_stat (path=0x7ffff6678700 "/usr/local/mysql/share/charsets/Index.xml", stat_area=0x7ffff6678640, my_flags=0) at my_lib.c:543
#1 0x00007ffff729558f in my_read_charset_file (filename=0x0, myflags=-160982496) at charset.c:337
#2 0x00007ffff7295842 in init_available_charsets (myflags=0) at charset.c:444
#3 0x00007ffff7295ae7 in get_charset (cs_number=33, flags=0) at charset.c:544
#4 0x00007ffff7251974 in NdbDictInterface::parseTableInfo (ret=0x7ffff6678dd0, data=<value optimized out>, len=<value optimized out>, fullyQualifiedNames=<value optimized out>, version=<value optimized out>)
at NdbDictionaryImpl.cpp:2694
#5 0x00007ffff72524d8 in NdbDictInterface::getTable (this=0x61aae0, signal=<value optimized out>, ptr=<value optimized out>, noOfSections=<value optimized out>, fullyQualifiedNames=69)
at ../../../../storage/ndb/include/util/UtilBuffer.hpp:95
#6 0x00007ffff7252753 in NdbDictInterface::getTable (this=0x61aae0, name=<value optimized out>, fullyQualifiedNames=32) at NdbDictionaryImpl.cpp:2346
#7 0x00007ffff7252be2 in NdbDictionaryImpl::fetchGlobalTableImplRef (this=0x61a848, obj=...) at NdbDictionaryImpl.cpp:1796
#8 0x00007ffff723dbae in NdbDictionaryImpl::getTable (this=<value optimized out>, name=<value optimized out>, data=0x0) at NdbDictionaryImpl.hpp:1208
#9 NdbDictionary::Dictionary::getTable (this=<value optimized out>, name=<value optimized out>, data=0x0) at NdbDictionary.cpp:2114
#10 0x0000000000401497 in connect_and_fetch_dict () at dict-init-problem.cc:43
#11 0x00007ffff79c373a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007ffff67456dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()
Current language: auto
The current source language is "auto; currently c".
(gdb)
[13 Dec 2011 23:39]
Daniel Smythe
Verified as described
[2 May 2022 16:26]
Jon Stephens
Fixed -> NDB 7.5.0 by BUG#21802367. See same (in the MySQL 5.7.9 changelog) for docs info. Closed.
Description: NdbDictionary::getTable crashes if certain conditions are met: - table has nondefault charset (tested with utf8) - this is first call to getTable() and is made in non-main thread - mysqlcluster is installed somewhere else than /usr/local/mysql Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7ffff6348910 (LWP 23017)] my_stat (path=0x7ffff6347700 "/usr/local/mysql/share/charsets/Index.xml", stat_area=0x7ffff6347640, my_flags=0) at my_lib.c:543 How to repeat: make sure that file /usr/local/mysql/share/charsets/Index.xml doesn't exist (i just installed mysql cluster into /opt/mysql-cluster-gpl-7.0.9-linux-x86_64-glibc23/) on mysql console: mysql> CREATE TABLE test.foo ( c1 VARCHAR(15) NOT NULL) ENGINE=ndb CHARSET=utf8; and minimal program trying to request information (error checking reduced to minimum): #include <pthread.h> #include <iostream> #include <NdbApi.hpp> extern "C" void *connect_and_fetch_dict(void *) { std::cout <<"preparing cluster connection ..." <<std::endl; Ndb_cluster_connection conn("127.0.0.1"); if ( conn.connect(4, 5, 1) ) { std::cerr <<"cannot connect to mgmt node" <<std::endl; return NULL; } if ( conn.wait_until_ready(30, 0) < 0 ) { std::cerr <<"cluster not ready" <<std::endl; return NULL; } std::cout <<"connected to cluster" <<std::endl; Ndb db(&conn, "test"); if ( db.init() ) { std::cerr <<"db.init(): " <<db.getNdbError().message <<std::endl; return NULL; } std::cout <<"got to test db" <<std::endl; NdbDictionary::Dictionary *dict = db.getDictionary(); if ( dict == NULL ) { std::cerr <<"db.getDictionary(): " <<db.getNdbError().message <<std::endl; return NULL; } std::cout <<"got dictionary" <<std::endl; const NdbDictionary::Table *table = dict->getTable("foo"); if ( table == NULL ) { std::cerr <<"dict->getTable(): " <<dict->getNdbError().message <<std::endl; return NULL; } std::cout <<"got table" <<std::endl; return NULL; } int main() { ndb_init(); { pthread_t thid; pthread_create(&thid, NULL, connect_and_fetch_dict, NULL); pthread_join(thid, NULL); } ndb_end(0); return 0; } when run, this program will abort, and: % gdb -c core ./ndb-dict-crash .... ... Core was generated by `./ndb-dict-crash'. Program terminated with signal 11, Segmentation fault. #0 my_stat (path=0x7ffff6678700 "/usr/local/mysql/share/charsets/Index.xml", stat_area=0x7ffff6678640, my_flags=0) at my_lib.c:543 crashes can be stopped with: % ln -s /opt/mysql-cluster-gpl-7.0.9-linux-x86_64-glibc23 /usr/local/mysql (even creating empty file /usr/local/mysql/share/charsets/Index.xml helps) or with forcing getTable to be called first in main thread.