The NGINX worker process crashes when it receives an HTTP call.
error message : [alert] 1#1: worker process 53637 exited on signal 11 (core dumped)
We have observed this issue with NGINX versions 1.27.3 and 1.25.4, but it works fine with versions 1.27.5 and 1.25.0.
Below is the GDB backtrace. Could you please review it and help identify the root cause of the worker process crash?
gdb backtrace
(gdb) backtrace
#0 0x00007ff9de4015c3 in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#1 0x00007ff9de530939 in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#2 0x00007ff9de530dd8 in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#3 0x00007ff9de53283f in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#4 0x00007ff9de532cf2 in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#5 0x00007ff9de4afb7a in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#6 0x00007ff9de4ae4de in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#7 0x00007ff9de3ff045 in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#8 0x00007ff9de3ecb5a in ?? () from /opt/dynatrace/oneagent/agent/bin/1.313.45.20250521-164818/linux-x86-64/liboneagentnginx.so
#9 0x00005609f7fdcc80 in ngx_http_log_request (r=r@entry=0x5609f91b7e20) at src/http/ngx_http_request.c:3806
#10 0x00005609f7fde5c3 in ngx_http_free_request (r=r@entry=0x5609f91b7e20, rc=rc@entry=0) at src/http/ngx_http_request.c:3747
#11 0x00005609f7fdf14f in ngx_http_set_keepalive (r=0x5609f91b7e20) at src/http/ngx_http_request.c:3169
#12 ngx_http_finalize_connection (r=0x5609f91b7e20) at src/http/ngx_http_request.c:2806
#13 0x00005609f7ff02d2 in ngx_http_upstream_handler (ev=<optimized out>) at src/http/ngx_http_upstream.c:1306
#14 0x00005609f7fc5893 in ngx_epoll_process_events (cycle=<optimized out>, timer=<optimized out>, flags=1) at src/event/modules/ngx_epoll_module.c:901
#15 0x00005609f7fbb0aa in ngx_process_events_and_timers (cycle=cycle@entry=0x5609f8c56430) at src/event/ngx_event.c:258
#16 0x00005609f7fc317b in ngx_worker_process_cycle (cycle=cycle@entry=0x5609f8c56430, data=data@entry=0x1) at src/os/unix/ngx_process_cycle.c:793
#17 0x00005609f7fc169f in ngx_spawn_process (cycle=cycle@entry=0x5609f8c56430, proc=0x5609f7fc30e0 <ngx_worker_process_cycle>, data=0x1,
name=0x5609f8170b6b "worker process", respawn=respawn@entry=1) at src/os/unix/ngx_process.c:199
#18 0x00005609f7fc4077 in ngx_reap_children (cycle=0x5609f8c56430) at src/os/unix/ngx_process_cycle.c:665
#19 ngx_master_process_cycle (cycle=0x5609f8c56430) at src/os/unix/ngx_process_cycle.c:180
#20 0x00005609f7f9925e in main (argc=<optimized out>, argv=<optimized out>) at src/core/nginx.c:387
