nginx version: nginx/1.1.15
TLS SNI support enabled
configure arguments: --prefix=/usr --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error_log --pid-path=/var/run/nginx.pid --lock-path=/var/lock/nginx.lock --user=nginx --group=nginx --with-cc-opt=-I/usr/include --with-ld-opt=-L/usr/lib --http-log-path=/var/log/nginx/access_log --http-client-body-temp-path=/var/tmp/nginx/client --http-proxy-temp-path=/var/tmp/nginx/proxy --http-fastcgi-temp-path=/var/tmp/nginx/fastcgi --http-scgi-temp-path=/var/tmp/nginx/scgi --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi --with-file-aio --with-aio_module --with-debug --with-pcre --without-http_auth_basic_module --without-http_geo_module --without-http_limit_req_module --without-http_memcached_module --without-http_referer_module --without-http_scgi_module --without-http_ssi_module --without-http_split_clients_module --without-http_userid_module --without-http_uwsgi_module --with-http_flv_module --with-http_geoip_module --with-http_stub_status_module --with-http_realip_module --add-module=/var/tmp/portage/www-servers/nginx-1.1.15/work/perusio-nginx-http-concat-c37eadc --add-module=/var/tmp/portage/www-servers/nginx-1.1.15/work/masterzen-nginx-upload-progress-module-c7c663f --with-http_ssl_module --without-mail_imap_module --without-mail_pop3_module --without-mail_smtp_module


gdb:

Program terminated with signal 11, Segmentation fault.
#0 ngx_event_pipe_write_chain_to_temp_file (p=0x1cc9038)
at src/event/ngx_event_pipe.c:709
709 src/event/ngx_event_pipe.c: No such file or directory.

backtrace:

#0 ngx_event_pipe_write_chain_to_temp_file (p=0x1cc9038)
at src/event/ngx_event_pipe.c:709
size = 0
bsize = <optimized out>
n = <optimized out>
b = <optimized out>
prev_last_shadow = 1
cl = 0x0
tl = <optimized out>
next = <optimized out>
out = 0x0
ll = 0x0
last_out = <optimized out>
last_free = <optimized out>
fl = {buf = 0x7fff7cb3cba0, next = 0x7fff7cbffa0c}
#1 0x00000000004203fb in ngx_event_pipe_read_upstream (p=0x1cc9038)
at src/event/ngx_event_pipe.c:227
chain = <optimized out>
ln = <optimized out>
n = <optimized out>
size = <optimized out>
rc = <optimized out>
b = <optimized out>
cl = <optimized out>
#2 ngx_event_pipe (p=0x1cc9038, do_write=<optimized out>)
at src/event/ngx_event_pipe.c:49
rc = 0
rev = <optimized out>
wev = <optimized out>
#3 0x000000000044786e in ngx_http_upstream_process_upstream (r=0x1cbd5b0,
u=0x1db4870) at src/http/ngx_http_upstream.c:2641
c = 0x7f10f8f45e50
#4 0x00000000004479ad in ngx_http_upstream_handler (ev=0x7f10f88c47c8)
at src/http/ngx_http_upstream.c:935
c = 0x7f10f8f45d90
r = 0x1cbd5b0
ctx = <optimized out>
u = 0x1db4870
#5 0x0000000000426d79 in ngx_epoll_process_events (cycle=0x1bf1440,
timer=<optimized out>, flags=<optimized out>)
at src/event/modules/ngx_epoll_module.c:679
events = <optimized out>
revents = 5
instance = <optimized out>
i = <optimized out>
level = <optimized out>
err = <optimized out>
rev = 0x7f10f88c47c8
wev = <optimized out>
queue = <optimized out>
c = 0x7f10f8f45e50
#6 0x000000000041da56 in ngx_process_events_and_timers (cycle=0x1bf1440)
at src/event/ngx_event.c:246
flags = <optimized out>
timer = <optimized out>
delta = 1329485422940
#7 0x0000000000424a35 in ngx_worker_process_cycle (cycle=0x1bf1440,
data=<optimized out>) at src/os/unix/ngx_process_cycle.c:802
i = <optimized out>
c = <optimized out>
#8 0x0000000000423266 in ngx_spawn_process (cycle=0x1bf1440,
proc=0x424960 <ngx_worker_process_cycle>, data=0x0,
name=0x4704b5 "worker process", respawn=-3) at src/os/unix/ngx_process.c:198
on = 1
pid = 0
s = <optimized out>
#9 0x0000000000424f79 in ngx_start_worker_processes (cycle=0x1bf1440, n=4,
type=-3) at src/os/unix/ngx_process_cycle.c:361
i = <optimized out>
ch = {command = 1, pid = 6123, slot = 0, fd = 3}
#10 0x0000000000425621 in ngx_master_process_cycle (cycle=0x1bf1440)
at src/os/unix/ngx_process_cycle.c:137
title = 0x1d58490 "master process /usr/sbin/nginx -c /etc/nginx/nginx.conf"
p = <optimized out>
size = 56
i = 3
n = <optimized out>
sigio = <optimized out>
set = {__val = {0 <repeats 16 times>}}
itv = {it_interval = {tv_sec = 0, tv_usec = 29299800}, it_value = {
tv_sec = 0, tv_usec = 0}}
live = <optimized out>
delay = <optimized out>
ls = <optimized out>
ccf = 0x1bf23b0
#11 0x000000000040751d in main (argc=<optimized out>, argv=<optimized out>)
at src/core/nginx.c:410
i = <optimized out>
pid = 0
s = <optimized out>


У меня много виртуальных хвостов, и это production site. Надеюсь, что проблема и так ясна и можно обойтись без debug лога, ибо я не знаю на каком из сайтов происходит крэш.

Андрей