Hello Maxim,

For now I can't reproduce the problem, if it happens again i'll try to catch a real backtrace.

Here are the other details. Thanks!



nginx:
nginx version: nginx/0.8.35
built by gcc 4.1.1 20070105 (Red Hat 4.1.1-52)
TLS SNI support disabled
configure arguments: --with-http_ssl_module --add-module=/root/ngx_cache_purge-1.0



openssl:
OpenSSL 0.9.8b 04 May 2006
built on: Wed Oct 17 18:15:17 EDT 2007
platform: linux-elf
options: bn(64,32) md2(int) rc4(idx,int) des(ptr,risc1,16,long) blowfish(idx)
compiler: gcc -fPIC -DOPENSSL_PIC -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DKRB5_MIT -I/usr/kerberos/include -DL_ENDIAN -DTERMIO -Wall -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=generic -fasynchronous-unwind-tables -Wa,--noexecstack -DOPENSSL_BN_ASM_PART_WORDS -DOPENSSL_IA32_SSE2 -DSHA1_ASM -DMD5_ASM -DRMD160_ASM -DAES_ASM
OPENSSLDIR: "/etc/pki/tls"
engines: dynamic padlock



nginx conf:

user nginx;
worker_processes 1;
worker_rlimit_nofile 10240;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
worker_connections 10240;
}

http {
include /usr/local/nginx/conf/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] $request '
'"$status" $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log /var/log/nginx/access.log main;

log_format cache '***$time_local '
'$upstream_cache_status '
'Cache-Control: $upstream_http_cache_control '
'Expires: $upstream_http_expires '
'"$host" "$request" ($status) '
'"$http_user_agent" ';
access_log /var/log/nginx/cache.log cache;

sendfile on;

keepalive_timeout 65;

gzip on;
gzip_types text/css text/javascript application/x-javascript;


proxy_cache_path /mnt/nginx/cache levels=1:2 keys_zone=myzone:50m inactive=2h max_size=3000m;
proxy_temp_path /mnt/nginx/temp;


upstream backend_ssl {
server 10.255.10.255:443;
}

server {
listen 443;
server_name _;

ssl on;
ssl_certificate /usr/local/nginx/conf/cert;
ssl_certificate_key /usr/local/nginx/conf/key;

ssl_session_timeout 5m;

ssl_protocols SSLv2 SSLv3 TLSv1;
ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
ssl_prefer_server_ciphers on;

location / {

proxy_pass http://backend_ssl;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
}

# static files served locally
location ~* \.(css|js)$ {
root /home/static;
}

# static images served locally and get Expires header
location ~* \.(jpg|jpeg|gif|png|ico|bmp)$ {
root /home/static;
expires 30d;
}
}


}