Wauux commented on issue #4941:
URL: https://github.com/apache/apisix/issues/4941#issuecomment-908873157
> Could you provide the logs before the stack overflow?
这条连接的日志 dns每变化一次，deepcopy 就会增加一层递归拷贝.. 持续一段时间后就会出现栈溢出
2021/08/30 09:52:15 [error] 10780#10780: *35662 [lua] debug.lua:128:
http_access_phase(): call require("apisix").http_access_phase() args:{},
client: 192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] radixtree.lua:488:
compare_param(): pcre pat: \/((.|\n)*), client: 192.168.33.133, server: _,
request: "GET / HTTP/1.1", host: "192.168.33.133:9080"
2021/08/30 09:52:15 [warn] 10780#10780: *35662 [lua] json.lua:82: failed to
encode: Cannot serialise, excessive nesting (1001) force: true, client:
192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [warn] 10780#10780: *35662 [lua] json.lua:82: failed to
encode: Cannot serialise, excessive nesting (1001) force: true, client:
192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] init.lua:387:
fun_org(): matched route: , client: 192.168.33.133, server: _, request: "GET /
HTTP/1.1", host: "192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] client.lua:124:
dns_parse(): dns resolve www.test.com, result:
{"address":"192.168.33.101","ttl":0,"name":"www.test.com","class":1,"type":1,"section":1},
client: 192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] resolver.lua:39:
parse_domain(): parse addr:
{"address":"192.168.33.101","name":"www.test.com","class":1,"ttl":0,"type":1,"section":1},
client: 192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] resolver.lua:40:
parse_domain(): resolver: ["127.0.0.1"], client: 192.168.33.133, server: _,
request: "GET / HTTP/1.1", host: "192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] resolver.lua:41:
parse_domain(): host: www.test.com, client: 192.168.33.133, server: _, request:
"GET / HTTP/1.1", host: "192.168.33.133:9080"
2021/08/30 09:52:15 [info] 10780#10780: *35662 [lua] resolver.lua:43:
parse_domain(): dns resolver domain: www.test.com to 192.168.33.101, client:
192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [error] 10780#10780: *35662 lua entry thread aborted:
runtime error: stack overflow
2021/08/30 09:52:15 [error] 10780#10780: *35662 [lua] debug.lua:128:
http_header_filter_phase(): call require("apisix").http_header_filter_phase()
args:{} while sending response to client, client: 192.168.33.133, server: _,
request: "GET / HTTP/1.1", host: "192.168.33.133:9080"
2021/08/30 09:52:15 [error] 10780#10780: *35662 [lua] debug.lua:134:
http_header_filter_phase(): call require("apisix").http_header_filter_phase()
return:{} while sending response to client, client: 192.168.33.133, server: _,
request: "GET / HTTP/1.1", host: "192.168.33.133:9080"
2021/08/30 09:52:15 [error] 10780#10780: *35662 [lua] debug.lua:128:
http_log_phase(): call require("apisix").http_log_phase() args:{} while logging
request, client: 192.168.33.133, server: _, request: "GET / HTTP/1.1", host:
"192.168.33.133:9080"
2021/08/30 09:52:15 [error] 10780#10780: *35662 [lua] debug.lua:134:
http_log_phase(): call require("apisix").http_log_phase() return:{} while
logging request, client: 192.168.33.133, server: _, request: "GET / HTTP/1.1",
host: "192.168.33.133:9080"
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