| Bug #10319 | MySQL server crashes with SIGSEGV (4.1, 5.0) | ||
|---|---|---|---|
| Submitted: | 2 May 2005 19:32 | Modified: | 2 Aug 2005 9:06 |
| Reporter: | Andrey Hristov | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server | Severity: | S2 (Serious) |
| Version: | 4.1.12, 5.0.6-dev | OS: | Linux (Linux SuSE 9.1 (upgr to 9.2). Kernel 2.6.8) |
| Assigned to: | Andrey Hristov | CPU Architecture: | Any |
[2 May 2005 19:36]
Andrey Hristov
And the backtrace (5.0.6): 0x80e5a09 handle_segfault + 417 0x836657d __pthread_sighandler + 173 0x400832f2 __stop___libc_freeres_ptrs + 933631214 0x40071aff __stop___libc_freeres_ptrs + 933559547 0x40071bbd __stop___libc_freeres_ptrs + 933559737 0x40019075 __stop___libc_freeres_ptrs + 933196401 0x40019504 __stop___libc_freeres_ptrs + 933197568 0x83963a2 __new_gethostbyaddr_r + 226 0x839621f gethostbyaddr + 143 0x80ec14e ip_to_hostname(in_addr*, unsigned int*) + 424 0x80f9b9b check_connection(THD*) + 311 0x80fa3fc handle_one_connection + 312 0x83615be pthread_start_thread + 222 0x839424a __clone + 106
[2 May 2005 20:54]
MySQL Verification Team
I wasn't able to repeat with 5.0 BK source on Windows and Linux: C:\temp>bug10319 number of rows : 2 1 2 miguel@hegel:~/dbs/5.0$ ./simple number of rows : 2 1 2
[2 Aug 2005 9:06]
Andrey Hristov
can't reproduce any more
Description: The following C program leads to core dump in the server. Compiled with : andrey@whirlpool:~/tst> gcc -g -o simple simple.c -I/home/andrey/mysql-4.1/include/ -L/home/andrey/mysql-4.1/libmysql/.libs -lmysqlclient -lz -static How to repeat: #include <stdio.h> #include "mysql.h" int main(void) { MYSQL *conn,*rconn; MYSQL_RES *res; MYSQL_ROW row; int i=0,j=0,k; conn = mysql_init(NULL); rconn = mysql_real_connect(conn, "127.0.0.1", "root", "", "test", 0, NULL, 0); if (!rconn) {fprintf(stderr, "got NULL\n");exit(1);} rconn->reconnect = 0; i = mysql_query(rconn, "SELECT * FROM t123;"); res = mysql_store_result(rconn); printf("number of rows : %d\n", mysql_num_rows(res)); j = mysql_num_rows(res); i = mysql_num_fields(res); while (j-- > 0) { row = mysql_fetch_row(res); for (k = 0; k < i; ++k) { printf("%s\t", row[k]); } printf("\n"); } mysql_free_result(res);