crash in apache

I got a sig 11 in an apache child process:

(gdb) bt
#0 0x403e53f5 in _efree () from /etc/httpd/modules/libphp4.so
#1 0x408efcb0 in _notice_handler () from /usr/lib/php4/pgsql.so
#2 0x40905cfe in getNotice () from /usr/lib/libpq.so.2
#3 0x4090555b in parseInput () from /usr/lib/libpq.so.2
#4 0x40905aaa in PQgetResult () from /usr/lib/libpq.so.2
#5 0x40905bdc in PQexec () from /usr/lib/libpq.so.2
#6 0x408f1514 in php_if_pg_exec () from /usr/lib/php4/pgsql.so
#7 0x403f75cf in execute () from /etc/httpd/modules/libphp4.so
#8 0x403f77d9 in execute () from /etc/httpd/modules/libphp4.so
#9 0x403f77d9 in execute () from /etc/httpd/modules/libphp4.so
#10 0x403fe637 in execute () from /etc/httpd/modules/libphp4.so
#11 0x403fe637 in execute () from /etc/httpd/modules/libphp4.so
#12 0x403fe637 in execute () from /etc/httpd/modules/libphp4.so
#13 0x403fe637 in execute () from /etc/httpd/modules/libphp4.so
#14 0x4040a67c in zend_execute_scripts () from
/etc/httpd/modules/libphp4.so
#15 0x4041cd14 in php_execute_script () from
/etc/httpd/modules/libphp4.so
#16 0x404192d1 in apache_php_module_main () from
/etc/httpd/modules/libphp4.so
#17 0x40419d2d in send_php () from /etc/httpd/modules/libphp4.so
#18 0x40419d63 in send_parsed_php () from /etc/httpd/modules/libphp4.so
#19 0x08054a3d in ap_invoke_handler ()
#20 0x0806725c in process_request_internal ()
#21 0x080672d3 in ap_process_request ()
#22 0x0805f727 in child_main ()
#23 0x0805f969 in make_child ()
#24 0x0805fcbb in perform_idle_server_maintenance ()
#25 0x0806025c in standalone_main ()
#26 0x08060953 in main ()
#27 0x4016e657 in __libc_start_main (main=0x80604d0 <main>, argc=39,
ubp_av=0xbfffe234, init=0x804f3d8 <_init>, fini=0x8075080 <_fini>,
rtld_fini=0x4000dcd4 <_dl_fini>, stack_end=0xbfffe22c) at
../sysdeps/generic/libc-start.c:129
(gdb)

Is that pgsqls fault, phps or apaches?

--
Markus Bertheau.
Berlin, Berlin.
Germany.