| 1 | | client canceled stream while reading response header from upstream |
| 2 | | log: |
| 3 | | "2018/05/13 23:11:07 [info] 124561#0: *198618980 client canceled stream 13 while reading response header from upstream" |
| 4 | | then execute: |
| 5 | | ev = fc->read; |
| 6 | | ev->handler(ev); |
| 7 | | ev->handler would be ngx_http_v2_close_stream_handler, then ngx_http_free_request |
| 8 | | request still used in ngx_http_upstream_handler, because upstream did not close when close stream |
| 9 | | segment fault stacktrace: |
| 10 | | (gdb) bt |
| 11 | | Python Exception <type 'exceptions.ImportError?'> No module named gdb.frames: |
| 12 | | #0 ngx_http_upstream_handler (ev=0x7f5e16447c60) at src/http/ngx_http_upstream.c:1261 |
| 13 | | #1 0x000000000047bb16 in ngx_event_expire_timers () at src/event/ngx_event_timer.c:96 |
| 14 | | #2 0x000000000047b5af in ngx_process_events_and_timers (cycle=cycle@entry=0x1320bf0) at src/event/ngx_event.c:263 |
| 15 | | #3 0x00000000004834dc in ngx_worker_process_cycle (cycle=0x1320bf0, data=<optimized out>) at src/os/unix/ngx_process_cycle.c:749 |
| 16 | | #4 0x0000000000481ba2 in ngx_spawn_process (cycle=cycle@entry=0x1320bf0, proc=proc@entry=0x483449 <ngx_worker_process_cycle>, data=data@entry=0x4, |
| 17 | | name=name@entry=0x76c9d6 "worker process", respawn=respawn@entry=-3) at src/os/unix/ngx_process.c:198 |
| 18 | | #5 0x000000000048278e in ngx_start_worker_processes (cycle=cycle@entry=0x1320bf0, n=6, type=type@entry=-3) at src/os/unix/ngx_process_cycle.c:358 |
| 19 | | #6 0x0000000000483e45 in ngx_master_process_cycle (cycle=cycle@entry=0x1320bf0) at src/os/unix/ngx_process_cycle.c:130 |
| 20 | | #7 0x000000000045bd6e in main (argc=<optimized out>, argv=<optimized out>) at src/core/nginx.c:382 |
| 21 | | |
| 22 | | GaoYan. |
