Core was generated by `nginx: worker process'.
Program terminated with signal 11, Segmentation fault.
#0  0x000000000040c161 in ngx_log_error_core (level=4, log=0x1ef3fa8, err=111, fmt=0x4bfdf3 "send() failed") at src/core/ngx_log.c:94
94	    if (log->file->fd == NGX_INVALID_FILE) {

(gdb) p *log
$2 = {log_level = 4, file = 0x0, connection = 0, handler = 0, data = 0x0, action = 0x4cb8f8 "logging"}

(gdb) bt
#0  0x000000000040c161 in ngx_log_error_core (level=4, log=0x1ef3fa8, err=111, fmt=0x4bfdf3 "send() failed") at src/core/ngx_log.c:94
#1  0x0000000000415897 in ngx_connection_error (c=<value optimized out>, err=<value optimized out>, text=<value optimized out>) at src/core/ngx_connection.c:1124
#2  0x000000000042357b in ngx_unix_send (c=0x1f00b90, buf=0x1efc510 "johnson.http_body_traffic:12199|ce Gecko) Chrome/24.0.1312.52 Safari/537.17\" \"-\"\n", size=33)
    at src/os/unix/ngx_send.c:69
#3  0x0000000000472bcc in ngx_http_statsd_udp_send (l=0x1e873b0, buf=0x1efc510 "johnson.http_body_traffic:12199|ce Gecko) Chrome/24.0.1312.52 Safari/537.17\" \"-\"\n", 
    len=33) at /usr/local/src/nginx-statsd/ngx_http_statsd.c:404
#4  0x0000000000472e94 in ngx_http_statsd_handler (r=<value optimized out>) at /usr/local/src/nginx-statsd/ngx_http_statsd.c:312
#5  0x000000000043434e in ngx_http_log_request (r=0x1ef83a0) at src/http/ngx_http_request.c:3098
#6  0x0000000000434410 in ngx_http_free_request (r=0x1ef83a0, rc=0) at src/http/ngx_http_request.c:3053
#7  0x0000000000436217 in ngx_http_set_keepalive (r=0x1ef83a0) at src/http/ngx_http_request.c:2518
#8  ngx_http_finalize_connection (r=0x1ef83a0) at src/http/ngx_http_request.c:2208
#9  0x0000000000436b97 in ngx_http_finalize_request (r=<value optimized out>, rc=<value optimized out>) at src/http/ngx_http_request.c:2116
#10 0x0000000000436f6c in ngx_http_writer (r=0x1ef83a0) at src/http/ngx_http_request.c:2340
#11 0x00000000004342e9 in ngx_http_request_handler (ev=<value optimized out>) at src/http/ngx_http_request.c:1863
#12 0x0000000000427465 in ngx_epoll_process_events (cycle=<value optimized out>, timer=<value optimized out>, flags=<value optimized out>)
    at src/event/modules/ngx_epoll_module.c:714
#13 0x000000000041fe6f in ngx_process_events_and_timers (cycle=0x1e75190) at src/event/ngx_event.c:247
#14 0x0000000000426097 in ngx_worker_process_cycle (cycle=0x1e75190, data=<value optimized out>) at src/os/unix/ngx_process_cycle.c:807
#15 0x00000000004248fc in ngx_spawn_process (cycle=0x1e75190, proc=0x425fc4 <ngx_worker_process_cycle>, data=<value optimized out>, name=0x4c067e "worker process", 
    respawn=0) at src/os/unix/ngx_process.c:198
#16 0x000000000042683d in ngx_reap_children (cycle=0x1e75190) at src/os/unix/ngx_process_cycle.c:619
#17 ngx_master_process_cycle (cycle=0x1e75190) at src/os/unix/ngx_process_cycle.c:180
#18 0x000000000040bd1a in main (argc=<value optimized out>, argv=<value optimized out>) at src/core/nginx.c:412

#0  0x000000000040c161 in ngx_log_error_core (level=4, log=0x1ef3fa8, err=111, fmt=0x4bfdf3 "send() failed") at src/core/ngx_log.c:94
#1  0x0000000000415897 in ngx_connection_error (c=<value optimized out>, err=<value optimized out>, text=<value optimized out>) at src/core/ngx_connection.c:1124
#2  0x000000000042357b in ngx_unix_send (c=0x1f00b90, buf=0x1efc510 "mysite1.http_body_traffic:12199|ce Gecko) Chrome/24.0.1312.52 Safari/537.17\" \"-\"\n", size=33)
    at src/os/unix/ngx_send.c:69
#3  0x0000000000472bcc in ngx_http_statsd_udp_send (l=0x1e873b0, buf=0x1efc510 "mysite1.http_body_traffic:12199|ce Gecko) Chrome/24.0.1312.52 Safari/537.17\" \"-\"\n", 
    len=33) at /usr/local/src/nginx-statsd/ngx_http_statsd.c:404
#4  0x0000000000472e94 in ngx_http_statsd_handler (r=<value optimized out>) at /usr/local/src/nginx-statsd/ngx_http_statsd.c:312
#5  0x000000000043434e in ngx_http_log_request (r=0x1ef83a0) at src/http/ngx_http_request.c:3098
#6  0x0000000000434410 in ngx_http_free_request (r=0x1ef83a0, rc=0) at src/http/ngx_http_request.c:3053
#7  0x0000000000436217 in ngx_http_set_keepalive (r=0x1ef83a0) at src/http/ngx_http_request.c:2518
#8  ngx_http_finalize_connection (r=0x1ef83a0) at src/http/ngx_http_request.c:2208
#9  0x0000000000436b97 in ngx_http_finalize_request (r=<value optimized out>, rc=<value optimized out>) at src/http/ngx_http_request.c:2116
#10 0x0000000000436f6c in ngx_http_writer (r=0x1ef83a0) at src/http/ngx_http_request.c:2340
#11 0x00000000004342e9 in ngx_http_request_handler (ev=<value optimized out>) at src/http/ngx_http_request.c:1863
#12 0x0000000000427465 in ngx_epoll_process_events (cycle=<value optimized out>, timer=<value optimized out>, flags=<value optimized out>)
    at src/event/modules/ngx_epoll_module.c:714
#13 0x000000000041fe6f in ngx_process_events_and_timers (cycle=0x1e75190) at src/event/ngx_event.c:247
#14 0x0000000000426097 in ngx_worker_process_cycle (cycle=0x1e75190, data=<value optimized out>) at src/os/unix/ngx_process_cycle.c:807
#15 0x00000000004248fc in ngx_spawn_process (cycle=0x1e75190, proc=0x425fc4 <ngx_worker_process_cycle>, data=<value optimized out>, name=0x4c067e "worker process", 
    respawn=0) at src/os/unix/ngx_process.c:198
#16 0x000000000042683d in ngx_reap_children (cycle=0x1e75190) at src/os/unix/ngx_process_cycle.c:619
#17 ngx_master_process_cycle (cycle=0x1e75190) at src/os/unix/ngx_process_cycle.c:180
#18 0x000000000040bd1a in main (argc=<value optimized out>, argv=<value optimized out>) at src/core/nginx.c:412