id summary reporter owner description type status priority milestone component version resolution keywords cc uname nginx_version 1095 nginx crashed bobykus@… "Server crashing periodically tail -f /var/log/nginx/error.log | grep signal 2016/10/05 14:09:58 [notice] 7463#0: signal 15 (SIGTERM) received, exiting Debian GNU/Linux 8 \n \l dpkg -l | grep nginx ii nginx 1.6.2-5+deb8u2 all small, powerful, scalable web/proxy server ii nginx-common 1.6.2-5+deb8u2 all small, powerful, scalable web/proxy server - common files ii nginx-full 1.6.2-5+deb8u2+b1 amd64 nginx web/proxy server (standard version) ii nginx-full-dbg 1.6.2-5+deb8u2+b1 amd64 nginx web/proxy server (standard version) - debugging symbols Here is core dump backtrace gdb /usr/sbin/nginx /tmp/core-nginx-11-33-33-9530-1475669436 GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type ""show copying"" and ""show warranty"" for details. This GDB was configured as ""x86_64-linux-gnu"". Type ""show configuration"" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type ""help"". Type ""apropos word"" to search for commands related to ""word""... Reading symbols from /usr/sbin/nginx...Reading symbols from /usr/lib/debug/.build-id/d2/c82927fb61b1497e9123e35f6db0aee695a6a1.debug...done. done. [New LWP 9530] [Thread debugging using libthread_db enabled] Using host libthread_db library ""/lib/x86_64-linux-gnu/libthread_db.so.1"". Core was generated by `nginx:'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f6612080be3 in __epoll_wait_nocancel () at ../sysdeps/unix/syscall-template.S:81 81 ../sysdeps/unix/syscall-template.S: No such file or directory. (gdb) bt #0 0x00007f6612080be3 in __epoll_wait_nocancel () at ../sysdeps/unix/syscall-template.S:81 #1 0x000000000042b921 in ngx_epoll_process_events (cycle=0x890a20, timer=500, flags=0) at src/event/modules/ngx_epoll_module.c:579 #2 0x0000000000422737 in ngx_process_events_and_timers (cycle=cycle@entry=0x890a20) at src/event/ngx_event.c:248 #3 0x0000000000429a4a in ngx_worker_process_cycle (cycle=cycle@entry=0x890a20, data=data@entry=0x0) at src/os/unix/ngx_process_cycle.c:816 #4 0x00000000004283fa in ngx_spawn_process (cycle=cycle@entry=0x890a20, proc=proc@entry=0x429990 , data=data@entry=0x0, name=name@entry=0x4ac11e ""worker process"", respawn=respawn@entry=-3) at src/os/unix/ngx_process.c:198 #5 0x0000000000429c84 in ngx_start_worker_processes (cycle=0x890a20, n=2, type=-3) at src/os/unix/ngx_process_cycle.c:364 #6 0x000000000042aa4b in ngx_master_process_cycle (cycle=0x890a20) at src/os/unix/ngx_process_cycle.c:136 #7 0x0000000000408b13 in main (argc=, argv=) at src/core/nginx.c:407 (gdb) here is config cat /etc/nginx/nginx.conf user www-data; pid /var/run/nginx.pid; worker_processes 2; worker_cpu_affinity 01 10; timer_resolution 50ms; # Save gettimeofday calls worker_rlimit_nofile 131072; error_log /var/log/nginx/error.log info; #error_log /var/log/nginx/error.log debug; #addint to enable core dump worker_rlimit_core 500M; working_directory /tmp/; events { worker_connections 20000; multi_accept on; } mail { server_name mail.some.com; resolver off; auth_http 127.0.0.1:1080/mail-auth; auth_http_timeout 60s; proxy_pass_error_message on; proxy_timeout 6h; imap_auth login plain cram-md5; imap_capabilities IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE; pop3_auth plain cram-md5 apop; pop3_capabilities CAPA TOP UIDL RESP-CODES PIPELINING USER; smtp_auth login plain cram-md5; smtp_capabilities ETRN ENHANCEDSTATUSCODES 8BITMIME DSN ""SIZE 52428800""; ssl_certificate /etc/nginx/ssl/STAR.some.com.full; ssl_certificate_key /etc/nginx/ssl/STAR.some.com.key; ssl_session_cache shared:SSL:50m; ssl_session_timeout 15m; ssl_session_tickets on; # modern configuration. tweak to your needs. # Outlook 2010 only supports TLSv1 ssl_protocols TLSv1 TLSv1.1 TLSv1.2; ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK'; ssl_prefer_server_ciphers on; ssl_dhparam /etc/nginx/ssl/dhparam.pem; server { listen 110; starttls on; protocol pop3; } server { listen 995; ssl on; protocol pop3; } server { listen 143; starttls on; protocol imap; } server { listen 993; ssl on; protocol imap; } server { listen 587; starttls on; protocol smtp; } server { listen 465; starttls on; protocol smtp; } } http { server { listen 0.0.0.0:80; server_name mail.some.com; server_tokens off; return 301 https://webmail.some.com/; " defect closed minor other 1.6.x worksforme Linux mailproxy01.some.net 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux "nginx version: nginx/1.6.2 TLS SNI support enabled configure arguments: --with-cc-opt='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt=-Wl,-z,relro --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_spdy_module --with-http_sub_module --with-http_xslt_module --with-mail --with-mail_ssl_module --add-module=/build/nginx-ryOGNl/nginx-1.6.2/debian/modules/nginx-auth-pam --add-module=/build/nginx-ryOGNl/nginx-1.6.2/debian/modules/nginx-dav-ext-module --add-module=/build/nginx-ryOGNl/nginx-1.6.2/debian/modules/nginx-echo --add-module=/build/nginx-ryOGNl/nginx-1.6.2/debian/modules/nginx-upstream-fair --add-module=/build/nginx-ryOGNl/nginx-1.6.2/debian/modules/ngx_http_substitutions_filter_module"