nginx upload core dump

[raine0524]

2018/10/21 16:06:52 [error] 9711#0: *105040 state file "/data/data/nginx/e/20180831132244269013.state" is corrupt, request: "POST /upload HTTP/1.1"
2018/10/21 16:06:52 [error] 9711#0: *105040 error merging ranges, request: "POST /upload HTTP/1.1"
2018/10/21 16:13:34 [alert] 3797#0: worker process 9116 exited on signal 11
nginx error log show a lot of message like that, I don't know how to result in this situation.
nginx version 1.8.0, upload module: 2.3.0