As subject says: I cannot access wp-admin due to above [error].
Otherwise, site functions as it should.

See error log:
2014/01/09 04:31:23 [error] 35759#0: *5254 FastCGI sent in stderr:
"Primary script unknown" while reading response header from upstream,
client: ipaddress, server: hostname, request: "GET
/wordpress/wp-login.php HTTP/1.1", upstream:
"fastcgi://unix:/var/run/php-fpm.sock:", host: "hostname", referrer:
"http://hostname/"


See access.log
[09/Jan/2014:04:31:23 +0000] "GET /wordpress/wp-login.php HTTP/1.1" 404
27 "hostname" "useragent" "-"


See nginx.conf
user www;
worker_processes 1;
error_log logs/error.log info;
pid /var/run/nginx.pid;

events {
worker_connections 768;
}

http {
include 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 logs/access.log main;
sendfile on;
tcp_nopush off;
keepalive_timeout 65;
gzip off;

server {
listen 80;
listen 443 ssl;
server_name hostname;
root /usr/local/www;
ssl_certificate /path/to/crt-chain.pem;
ssl_certificate_key /path/to/privatekey.pem;
ssl_dhparam /pth/to/dhparam4096.pem;
server_name hostname www.hostnam;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers "EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM
EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 EECDH+aRSA+SHA384
EECDH+aRSA+SHA256 EECDH+aRSA+RC4 EECDH EDH+aRSA RC4 !aNULL !eNULL !LOW
!3DES !MD5 !EXP !PSK !SRP !DSS !RC4";
ssl_prefer_server_ciphers on;
access_log logs/access.log main;
charset utf-8;

location / {
root /usr/local/www/wordpress;
try_files $uri $uri/ /index.php?q=$uri&$args;
index index.php index.html index.htm;
}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/local/www/nginx-dist;
}

location ~ \.(js|css|png|jpg|jpeg|gif|ico|html)$ {
expires max;
}

location ~ \.php$ {
root html;
fastcgi_pass unix:/var/run/php-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME
/usr/local/www/wordpress$fastcgi_script_name;
include fastcgi_params;
}

location ~ /\.ht {
deny all;
}
}
}


See fastcgi_params:
fastcgi_param QUERY_STRING $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param HTTPS $https if_not_empty;
fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
fastcgi_param REMOTE_ADDR $remote_addr;
fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;
fastcgi_param REDIRECT_STATUS 200;


Please advise my mistake and how to fix. Thank you.

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