Lighttpd

$ sudo /galtsu/sbin/lighttpd -D -f /galtsu/etc/lighttpd/lighttpd.conf 
mod_proxy_core_address.c.63: (trace) adding unix:/tmp/php-fastcgi.sock to the address-pool
Abort trap (core dumped)

$ sudo gdb /galtsu/sbin/lighttpd lighttpd.core
(gdb) bt
#0  0x0000000040d13a4c in pthread__errorfunc () from /usr/lib/libpthread.so.0
#1  0x0000000040d0f5e0 in pthread_cond_wait () from /usr/lib/libpthread.so.0
#2  0x0000000000107a08 in joblist_queue_thread (_data=0x236000) at server.c:535
#3  0x000000004095b3e8 in g_static_private_free ()
   from /usr/pkg/lib/libglib-2.0.so.0
#4  0x0000000040d12398 in pthread_create () from /usr/lib/libpthread.so.0
#5  0x0000000040f9ff60 in _lwp_makecontext () from /usr/lib/libc.so.12

$ sudo ktrace -f lighttpd.ktrace /galtsu/sbin/lighttpd -D -f /galtsu/etc/lighttpd/lighttpd.conf mod_proxy_core_address.c.63: (trace) adding unix:/tmp/php-fastcgi.sock to the address-pool
Abort trap (core dumped)

-- phadej