nginx изредка падает при п роксировании с резолвером

[Alex Vorona <voron@xxxxxxxxxx>]

Со следующим бэктрейсом
(gdb) bt
#0  0x2e737265 in ?? ()
#1  0x0805f1f6 in ngx_resolver_process_a (r=0x80e2080, buf=0x7f7fdbd0 "С\030\201\202", 
last=37, ident=62232, code=2, nan=0, ans=37)
    at src/core/ngx_resolver.c:1143
#2  0x0805ef69 in ngx_resolver_process_response (r=0x80e2080, buf=0x7f7fdbd0 
"С\030\201\202", n=37) at src/core/ngx_resolver.c:1049
#3  0x0805ec67 in ngx_resolver_read_response (rev=0x824299c) at 
src/core/ngx_resolver.c:953
#4  0x0806eddb in ngx_kqueue_process_events (cycle=0x80d5020, timer=500, flags=1) at 
src/event/modules/ngx_kqueue_module.c:689
#5  0x080629e7 in ngx_process_events_and_timers (cycle=0x80d5020) at 
src/event/ngx_event.c:245
#6  0x0806c026 in ngx_worker_process_cycle (cycle=0x80d5020, data=0x0) at 
src/os/unix/ngx_process_cycle.c:767
#7  0x08069f75 in ngx_spawn_process (cycle=0x80d5020, proc=0x806bed4 
<ngx_worker_process_cycle>, data=0x0, name=0x80b63e8 "worker process", respawn=-2)
    at src/os/unix/ngx_process.c:187
#8  0x0806b543 in ngx_start_worker_processes (cycle=0x80d5020, n=2, type=-2) at 
src/os/unix/ngx_process_cycle.c:332
#9  0x0806ae07 in ngx_master_process_cycle (cycle=0x80d5020) at 
src/os/unix/ngx_process_cycle.c:124
#10 0x0804a7be in main (argc=1, argv=0x7f7feee4) at src/core/nginx.c:364

nginx -V
nginx version: nginx/0.6.36
configure arguments: --prefix=/usr/local/etc/nginx --with-cc-opt=-I /usr/local/include 
--with-ld-opt=-L /usr/local/lib --conf-path=/usr/local/etc/nginx/nginx.conf 
--sbin-path=/usr/local/sbin/nginx --pid-path=/var/run/nginx.pid 
--error-log-path=/var/log/nginx-error.log --user=www --group=www --with-debug 
--with-google_perftools_module 
--http-client-body-temp-path=/var/tmp/nginx/client_body_temp 
--http-proxy-temp-path=/var/tmp/nginx/proxy_temp 
--http-fastcgi-temp-path=/var/tmp/nginx/fastcgi_temp 
--http-log-path=/var/log/nginx-access.log --with-http_realip_module 
--with-http_stub_status_module --with-http_sub_module
uname -r
6.2-RELEASE