Help to find error

[Maxim Dounin]

Hello!

On Thu, Aug 13, 2020 at 01:32:18AM -0400, RekGRpth wrote:

> Core was generated by `nginx:'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 0x0000555c3ace3b7e in ngx_rbtree_min (node=0x0, sentinel=0x555c3ae2f720
> <ngx_event_timer_sentinel>) at src/core/ngx_rbtree.h:76
> 76 while (node->left != sentinel) {
> [Current thread is 1 (LWP 8)]
> (gdb) bt
> #0 0x0000555c3ace3b7e in ngx_rbtree_min (node=0x0, sentinel=0x555c3ae2f720
> <ngx_event_timer_sentinel>) at src/core/ngx_rbtree.h:76
> #1 0x0000555c3ace3c87 in ngx_event_expire_timers () at
> src/event/ngx_event_timer.c:68
> #2 0x0000555c3ace1118 in ngx_process_events_and_timers
> (cycle=0x555c3bd46650) at src/event/ngx_event.c:266
> #3 0x0000555c3acf4329 in ngx_worker_process_cycle (cycle=0x555c3bd46650,
> data=0x0) at src/os/unix/ngx_process_cycle.c:812
> #4 0x0000555c3aceff2d in ngx_spawn_process (cycle=0x555c3bd46650,
> proc=0x555c3acf41fe <ngx_worker_process_cycle>, data=0x0,
> name=0x555c3addb9cd "worker process", respawn=-3) at
> src/os/unix/ngx_process.c:199
> #5 0x0000555c3acf2d35 in ngx_start_worker_processes (cycle=0x555c3bd46650,
> n=8, type=-3) at src/os/unix/ngx_process_cycle.c:388
> #6 0x0000555c3acf1fe8 in ngx_master_process_cycle (cycle=0x555c3bd46650) at
> src/os/unix/ngx_process_cycle.c:136
> #7 0x0000555c3aca4f77 in main (argc=1, argv=0x7ffcd3346468) at
> src/core/nginx.c:385

The backtrace suggests that the timer tree is corrupted.  In 
practice this usually means a bug elsewhere, often in a 3rd party 
module.

-- 
Maxim Dounin
http://mdounin.ru/