hi，
I use the skywalking-nginx-lua on my niginx,but console log likes this :
SJG-JCDT46:/usr/local/nginx/sbin # ./nginx -c
/usr/local/nginx/skywalking-nginx-lua/examples/nginx.conf
2021/02/09 17:22:24 [debug] 27524#0: bind() 0.0.0.0:8080 #6
2021/02/09 17:22:24 [notice] 27524#0: using the "epoll" event method
2021/02/09 17:22:24 [debug] 27524#0: counter: 00007FBE7605F080, 1
2021/02/09 17:22:24 [notice] 27524#0: nginx/1.18.0
2021/02/09 17:22:24 [notice] 27524#0: built by gcc 4.8.5 (SUSE Linux)
2021/02/09 17:22:24 [notice] 27524#0: OS: Linux 4.4.73-7-default
2021/02/09 17:22:24 [notice] 27524#0: getrlimit(RLIMIT_NOFILE): 1024:4096
2021/02/09 17:22:24 [debug] 27524#0: write: 7, 00007FFFC5B47220, 6, 0
2021/02/09 17:22:24 [debug] 27524#0: setproctitle: "nginx: master process
./nginx -c /usr/local/nginx/skywalking-nginx-lua/examples/nginx.conf"
2021/02/09 17:22:24 [notice] 27524#0: start worker processes
2021/02/09 17:22:24 [debug] 27524#0: channel 3:7
2021/02/09 17:22:24 [notice] 27524#0: start worker process 27525
2021/02/09 17:22:24 [debug] 27524#0: sigsuspend
2021/02/09 17:22:24 [debug] 27525#0: add cleanup: 000000000297CF30
2021/02/09 17:22:24 [debug] 27525#0: malloc: 0000000002978070:8
2021/02/09 17:22:24 [debug] 27525#0: notify eventfd: 9
2021/02/09 17:22:24 [debug] 27525#0: testing the EPOLLRDHUP flag: success
2021/02/09 17:22:24 [debug] 27525#0: malloc: 0000000002957630:6144
2021/02/09 17:22:24 [debug] 27525#0: malloc: 00007FBE75F9A010:229376
2021/02/09 17:22:24 [debug] 27525#0: malloc: 0000000002981580:98304
2021/02/09 17:22:24 [debug] 27525#0: malloc: 0000000002999590:98304
2021/02/09 17:22:24 [debug] 27525#0: epoll add event: fd:6 op:1 ev:00002001
2021/02/09 17:22:24 [debug] 27525#0: posix_memalign: 000000000294D140:16384 @16
2021/02/09 17:22:27 [notice] 27524#0: signal 17 (SIGCHLD) received from 27525
2021/02/09 17:22:27 [alert] 27524#0: worker process 27525 exited on signal 11
(core dumped)
2021/02/09 17:22:27 [debug] 27524#0: shmtx forced unlock
2021/02/09 17:22:27 [debug] 27524#0: shmtx forced unlock
2021/02/09 17:22:27 [debug] 27524#0: wake up, sigio 0
2021/02/09 17:22:27 [debug] 27524#0: reap children
2021/02/09 17:22:27 [debug] 27524#0: child: 0 27525 e:0 t:1 d:0 r:1 j:0
2021/02/09 17:22:27 [debug] 27524#0: channel 3:7
2021/02/09 17:22:27 [notice] 27524#0: start worker process 27527
2021/02/09 17:22:27 [debug] 27524#0: sigsuspend
2021/02/09 17:22:27 [debug] 27527#0: add cleanup: 000000000297CF30
2021/02/09 17:22:27 [debug] 27527#0: malloc: 0000000002978070:8
2021/02/09 17:22:27 [debug] 27527#0: notify eventfd: 9
2021/02/09 17:22:27 [debug] 27527#0: testing the EPOLLRDHUP flag: success
2021/02/09 17:22:27 [debug] 27527#0: malloc: 0000000002957630:6144
2021/02/09 17:22:27 [debug] 27527#0: malloc: 00007FBE75F9A010:229376
2021/02/09 17:22:27 [debug] 27527#0: malloc: 0000000002981580:98304
2021/02/09 17:22:27 [debug] 27527#0: malloc: 0000000002999590:98304
2021/02/09 17:22:27 [debug] 27527#0: epoll add event: fd:6 op:1 ev:00002001
2021/02/09 17:22:27 [debug] 27527#0: posix_memalign: 000000000294D140:16384 @16
^C2021/02/09 17:22:29 [notice] 27524#0: signal 2 (SIGINT) received, exiting
2021/02/09 17:22:29 [debug] 27524#0: wake up, sigio 0
2021/02/09 17:22:29 [debug] 27524#0: child: 0 27527 e:0 t:0 d:0 r:1 j:0
2021/02/09 17:22:29 [debug] 27524#0: termination cycle: 50
2021/02/09 17:22:29 [debug] 27524#0: sigsuspend
2021/02/09 17:22:29 [notice] 27524#0: signal 14 (SIGALRM) received
2021/02/09 17:22:29 [debug] 27524#0: wake up, sigio 3
2021/02/09 17:22:29 [debug] 27524#0: termination cycle: 100
2021/02/09 17:22:29 [debug] 27524#0: sigsuspend
2021/02/09 17:22:29 [notice] 27524#0: signal 14 (SIGALRM) received
2021/02/09 17:22:29 [debug] 27524#0: wake up, sigio 0
2021/02/09 17:22:29 [debug] 27524#0: child: 0 27527 e:1 t:0 d:0 r:1 j:0
2021/02/09 17:22:29 [debug] 27524#0: termination cycle: 200
2021/02/09 17:22:29 [debug] 27524#0: sigsuspend
2021/02/09 17:22:29 [notice] 27524#0: signal 17 (SIGCHLD) received from 27527
2021/02/09 17:22:29 [alert] 27524#0: worker process 27527 exited on signal 11
(core dumped)
what should I do ?
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