httpd segfaults in apr_socket_connect()

(gdb) bt
#0 0x00007f109f9a7848 in apr_socket_connect () from ./opt/Apache/jbcs-httpd24-2.4/httpd/sbin/../lib/libapr-1.so.0
#1 0x00007f109baf86f8 in ap_proxy_connect_backend (proxy_function=0x7f109b8e220e "HTTP", conn=0x7f102c0089a0, worker=0x7f10a1c2d638, s=0x7f10a1c5e0b8) at proxy_util.c:2792
#2 0x00007f109b8dfa07 in proxy_http_handler (r=0x7f102c002970, worker=0x7f10a1c2d638, conf=0x7f10a1c5a478, url=0x7f102c007e18 "http://abc.xyz.com:8080/context/context-1.pdf", proxyname=0x0, proxyport=0) at mod_proxy_http.c:1942
#3 0x00007f109baea3c2 in proxy_run_scheme_handler (r=0x7f102c002970, worker=0x7f10a1c2d638, conf=0x7f10a1c5a478, url=0x7f102c007e18 "http://abc.xyz.com:8080/context/context-1.pdf", proxyhost=0x0, proxyport=0) at mod_proxy.c:2849
#4 0x00007f109baef4b3 in proxy_handler (r=0x7f102c002970) at mod_proxy.c:1202
#5 0x00007f10a0828c80 in ap_run_handler (r=0x7f102c002970) at config.c:171
#6 0x00007f10a082d13e in ap_invoke_handler (r=0x7f102c002970) at config.c:434
#7 0x00007f10a084175a in ap_process_async_request (r=0x7f102c002970) at http_request.c:410
#8 0x00007f10a083d881 in ap_process_http_async_connection (c=0x7f1068015588) at http_core.c:154
#9 ap_process_http_connection (c=0x7f1068015588) at http_core.c:248
#10 0x00007f10a08342f0 in ap_run_process_connection (c=0x7f1068015588) at connection.c:42
#11 0x00007f109bd0a185 in process_socket (my_thread_num=10, my_child_num=0, cs=0x7f10680154f8, sock=0x7f10680152f0, p=0x7f1068015278, thd=0x7f1094001bc8) at event.c:1102
#12 worker_thread (thd=0x7f1094001bc8, dummy=<optimized out>) at event.c:1963
#13 0x00007f109f3309d1 in start_thread () from ./lib64/libpthread.so.0
#14 0x00007f109f07d8fd in clone () from ./lib64/libc.so.6
(gdb)
(gdb) disassemble
Dump of assembler code for function apr_socket_connect:
...
=> 0x00007f109f9a7848 <+104>: repz cmpsb %es%rdi),%ds%rsi)
...
(gdb) i registers
...
rsi 0x2e6374652e322d73 3342643326354599283
rdi 0x7f109fbb9320 139709376074528
...
rip 0x7f109f9a7848 0x7f109f9a7848 <apr_socket_connect+104>
eflags 0x246 [ PF ZF IF ]
...
ds 0x0 0
es 0x0 0
...
(gdb) x/x 0x7f109fbb9320
0x7f109fbb9320: 0x00000000
(gdb) x/x 0x2e6374652e322d73
0x2e6374652e322d73: Cannot access memory at address 0x2e6374652e322d73
(gdb)