Description
./sbin/nginx -s reload or ./sbin/nginx/ -s stop
then nginx workers will core.
#0 ngx_rbtree_min (sentinel=, node=0x0) at src/core/ngx_rbtree.h:76
#1 ngx_rbtree_delete (tree=0xe974e0 <ngx_event_timer_rbtree>, node=node@entry=0x7f94652956e8) at src/core/ngx_rbtree.c:176
#2 0x000000000051b1ae in ngx_event_del_timer (ev=0x7f94652956c0) at src/event/ngx_event_timer.h:38
#3 ngx_http_upsync_clear_all_events (cycle=) at ../nginx-upsync-module-2.1.0/src/ngx_http_upsync_module.c:3617
#4 0x000000000051b246 in ngx_http_upsync_need_exit () at ../nginx-upsync-module-2.1.0/src/ngx_http_upsync_module.c:3562
#5 0x00000000005203d4 in ngx_http_upsync_recv_handler (event=0x7f94652ba9a0) at ../nginx-upsync-module-2.1.0/src/ngx_http_upsync_module.c:2777
#6 0x00000000004768e7 in ngx_epoll_process_events (cycle=, timer=, flags=) at src/event/modules/ngx_epoll_module.c:902
#7 0x000000000046e2c9 in ngx_process_events_and_timers (cycle=cycle@entry=0x7f9465a7d6d0) at src/event/ngx_event.c:242
#8 0x0000000000474cc4 in ngx_worker_process_cycle (cycle=0x7f9465a7d6d0, data=) at src/os/unix/ngx_process_cycle.c:750
#9 0x00000000004733e2 in ngx_spawn_process (cycle=cycle@entry=0x7f9465a7d6d0, proc=proc@entry=0x474c53 <ngx_worker_process_cycle>, data=data@entry=0x1, name=name@entry=0x74882d "worker process",
respawn=respawn@entry=-3) at src/os/unix/ngx_process.c:199
#10 0x0000000000473f8b in ngx_start_worker_processes (cycle=cycle@entry=0x7f9465a7d6d0, n=8, type=type@entry=-3) at src/os/unix/ngx_process_cycle.c:359
#11 0x00000000004753c1 in ngx_master_process_cycle (cycle=cycle@entry=0x7f9465a7d6d0) at src/os/unix/ngx_process_cycle.c:131
#12 0x0000000000450e65 in main (argc=, argv=) at src/core/nginx.c:382