id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1587	memory leak with ngx_http_image_filter_module	dyeldandi@…		"We have an nginx running on port 8889 to resize/crop images with http_image_filter module. It's doing about 600K hits (resizes/crops) per day. The configuration file is attached.

Over time its memory footprint grows at approximate rate of 1.5 GB per day. 
{{{
USER       PID %CPU %MEM    VSZ   RSS   TTY   STAT START   TIME COMMAND
root     26612  0.0  0.0  56764   492    ?     Ss   Jun25   0:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
root     26613  1.8  4.5 796764  741116  ?     S<   Jun25 180:38 nginx: worker process
root     26614  1.5  3.6 643172  582292  ?     S<   Jun25 149:16 nginx: worker process
root     26615  5.1 15.4 2606648 2498452 ?     S<   Jun25 506:30 nginx: worker process
root     26616  4.0 13.4 2282260 2175168 ?     S<   Jun25 401:32 nginx: worker process
root     26617  2.9  8.8 1509224 1434856 ?     S<   Jun25 289:00 nginx: worker process
root     26618  6.9 20.4 3438772 3298556 ?     S<   Jun25 688:02 nginx: worker process
root     26619  3.4  9.0 1558788 1459996 ?     S<   Jun25 344:03 nginx: worker process
root     26620  2.3  6.6 1150284 1078564 ?     S<   Jun25 230:11 nginx: worker process
}}}
In about a week it grew from 400Mb to 10GB.

The same nginx build without image_filter module serving static files and doing proxy doesn't have this problem."	defect	closed	major		nginx-module	1.12.x	invalid	image filter		Linux hostname 3.14.32-xxxx-grs-ipv6-64 #9 SMP Thu Oct 20 14:53:52 CEST 2016 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.12.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) 
built with OpenSSL 1.0.2l  25 May 2017
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-openssl=openssl-1.0.2l --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --with-ld-opt="