nginx core dump

[zhaibin18]

**cat /etc/os-release
NAME="Ubuntu"
VERSION="16.04.5 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.5 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial
**
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/home/zhaibin18/nginx1140/sbin/nginx -V
nginx version: nginx/1.14.0
built with OpenSSL 1.0.2g 1 Mar 2016
TLS SNI support enabled
configure arguments: --prefix=/home/zhaibin18/nginx1140 --add-module=/home/zhaibin18/build_home/nginx-1.14.0/ngx_http_google_filter_module --add-module=/home/zhaibin18/build_home/nginx-1.14.0/ngx_http_substitutions_filter_module --with-http_ssl_module --with-debug --with-threads

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `nginx: w'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00000000004f8ba5 in ngx_http_google_create_ctx (r=0x1072760) at /home/zhaibin18/build_home/nginx-1.14.0/ngx_http_google_filter_module/src/ngx_http_google_request.c:41
41 ngx_str_t domain = *ctx->host;
(gdb) bt
#0 0x00000000004f8ba5 in ngx_http_google_create_ctx (r=0x1072760) at /home/zhaibin18/build_home/nginx-1.14.0/ngx_http_google_filter_module/src/ngx_http_google_request.c:41
#1 0x00000000004f9d94 in ngx_http_google_request_handler (r=0x1072760)
at /home/zhaibin18/build_home/nginx-1.14.0/ngx_http_google_filter_module/src/ngx_http_google_request.c:429
#2 0x000000000046f0b9 in ngx_http_core_rewrite_phase (r=0x1072760, ph=0x109b558) at src/http/ngx_http_core_module.c:912
#3 0x000000000046ef15 in ngx_http_core_run_phases (r=0x1072760) at src/http/ngx_http_core_module.c:858
#4 0x000000000046ee82 in ngx_http_handler (r=0x1072760) at src/http/ngx_http_core_module.c:841
#5 0x000000000047eb54 in ngx_http_process_request (r=0x1072760) at src/http/ngx_http_request.c:1952
#6 0x000000000047d4d6 in ngx_http_process_request_headers (rev=0x109fcb0) at src/http/ngx_http_request.c:1379
#7 0x000000000047c881 in ngx_http_process_request_line (rev=0x109fcb0) at src/http/ngx_http_request.c:1052
#8 0x000000000047b35d in ngx_http_wait_request_handler (rev=0x109fcb0) at src/http/ngx_http_request.c:510
#9 0x000000000045b61e in ngx_epoll_process_events (cycle=0x106e750, timer=59756, flags=1) at src/event/modules/ngx_epoll_module.c:902
#10 0x000000000044895f in ngx_process_events_and_timers (cycle=0x106e750) at src/event/ngx_event.c:242
#11 0x0000000000458ac4 in ngx_worker_process_cycle (cycle=0x106e750, data=0x0) at src/os/unix/ngx_process_cycle.c:750
#12 0x00000000004550de in ngx_spawn_process (cycle=0x106e750, proc=0x4589dd <ngx_worker_process_cycle>, data=0x0, name=0x5039bb "worker process", respawn=0)
at src/os/unix/ngx_process.c:199
#13 0x0000000000458561 in ngx_reap_children (cycle=0x106e750) at src/os/unix/ngx_process_cycle.c:622
#14 0x00000000004570ac in ngx_master_process_cycle (cycle=0x106e750) at src/os/unix/ngx_process_cycle.c:175
#15 0x0000000000411211 in main (argc=1, argv=0x7ffc97764048) at src/core/nginx.c:382
(gdb)

[cuber]

可否复现？

[zhaibin18]

可以复现，需要什么debug信息我可以继续抓。

[cuber]

你把core掉的请求url贴一下

[zhaibin18]

不是访问某个特定的url就core dump了，经常是半夜没人访问的时候某个线程core dump，也可能是爬虫导致。