Red Hat Bugzilla – Bug 11207
Apache segmentation fault with PHP/MySQL
Last modified: 2008-05-01 11:37:55 EDT
httpd dumps core with a segmentation fault when starting with mod_php3 built with MySQL support is enabled. This was not a problem on RedHat 6.0. I installed Apache (1.3.12) and MySQL (3.22.32) using rpm's, and compiled PHP (3.0.16) from source, using 'configure --with-apxs=/usr/sbin/apxs --with-mysql'. GDB on the core file gives: [root@bhakti /]# gdb -q /usr/sbin/httpd core (no debugging symbols found)...Core was generated by `/usr/sbin/httpd -t'. Program terminated with signal 11, Segmentation fault. Reading symbols from /lib/libm.so.6...done. Reading symbols from /lib/libcrypt.so.1...done. Reading symbols from /lib/libdb.so.3...done. Reading symbols from /lib/libdl.so.2...done. Reading symbols from /lib/libc.so.6...done. Reading symbols from /lib/ld-linux.so.2...done. Reading symbols from /lib/libnss_files.so.2...done. #0 0x4044dca0 in ?? () (gdb) where #0 0x4044dca0 in ?? () #1 0x8059f1d in ap_exists_scoreboard_image () #2 0x805c5f4 in main () #3 0x400bb9cb in __libc_start_main (main=0x805c3e0 <main>, argc=2, argv=0xbffffb84, init=0x804f014 <_init>, fini=0x807b99c <_fini>, rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffffb7c) at ../sysdeps/generic/libc-start.c:92 (gdb)
A better source of information might actually your /var/log/httpd/error_log file or whatever it is configured to be on your system. Often times it is the best source of information on startup httpd crashes and such. -Stan Bubrouski
This problem appears _only_ when you use the MySQL-shared package (which contains libmysqlclient.so.*). If you skip that package and use the statically linked libraries (from MySQL-devel), apache/php/mysql works.
Verified as fixed in php-4.0.1pl2 with newest MySQL from the build tree.