错误的yaml配置，导致ilogtail coredump无法启动

[blueskygzhz]

yaml文件：

global:
  EnableTimestampNanosecond: false
inputs:
- Type: input_file
  FilePaths:
  - /root/zhl/als/testjson.log
  MaxDirSearchDepth: 5
  ExcludeFilePaths: []
  TailSizeKB: 0
  AllowingIncludedByMultiConfigs: &id004
    enable: *id004
    global:
      EnableTimestampNanosecond: false
    inputs:
    - Type: input_file
      FilePaths:
      - /root/zhl/als/duohangzhengze.log
      MaxDirSearchDepth: 5
      ExcludeFilePaths: []
      TailSizeKB: 0
      AllowingIncludedByMultiConfigs: *id004

coredump堆栈：
(gdb) r
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff6bc7700 (LWP 63688)]
[New Thread 0x7ffff4ab8700 (LWP 63689)]
[Thread 0x7ffff4ab8700 (LWP 63689) exited]
[New Thread 0x7fffedd74700 (LWP 63690)]
[New Thread 0x7fffed573700 (LWP 63691)]
[New Thread 0x7fffecd72700 (LWP 63692)]
[New Thread 0x7fffec571700 (LWP 63693)]
[New Thread 0x7fffebd70700 (LWP 63694)]
[New Thread 0x7fffeb56f700 (LWP 63695)]
[New Thread 0x7fffead6e700 (LWP 63696)]
[New Thread 0x7fffea56d700 (LWP 63697)]
[New Thread 0x7fffe9d6c700 (LWP 63698)]

Program received signal SIGSEGV, Segmentation fault.
0x00000000006de6c2 in __gthread_active_p() ()
Missing separate debuginfos, use: debuginfo-install bzip2-libs-1.0.6-13.el7.x86_64 elfutils-libelf-0.172-2.el7.x86_64 elfutils-libs-0.172-2.el7.x86_64 glibc-2.17-326.el7_9.x86_64 libattr-2.4.46-13.el7.x86_64 libcap-2.22-9.el7.x86_64 libgcc-4.8.5-44.el7.x86_64 libstdc++-4.8.5-44.el7.x86_64 libuuid-2.23.2-65.el7_9.1.x86_64 systemd-libs-219-62.el7.x86_64 xz-libs-5.2.2-2.el7_9.x86_64 zlib-1.2.7-20.el7_9.x86_64
(gdb) bt
#0 0x00000000006de6c2 in __gthread_active_p() ()
#1 0x00000000006df7e5 in __gnu_cxx::__atomic_add_dispatch(int*, int) ()
#2 0x00000000006f089d in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_add_ref_copy() ()
#3 0x00000000006e869f in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count(std::__shared_count<(__gnu_cxx::_Lock_policy)2> const&) ()
#4 0x00000000032d741d in std::__shared_ptr<YAML::detail::memory_holder, (__gnu_cxx::_Lock_policy)2>::__shared_ptr(std::__shared_ptr<YAML::detail::memory_holder, (__gnu_cxx::_Lock_policy)2> const&) ()
#5 0x00000000032d7443 in std::shared_ptrYAML::detail::memory_holder::shared_ptr(std::shared_ptrYAML::detail::memory_holder const&) ()
#6 0x00000000032d7499 in YAML::Node::Node(YAML::Node const&) ()
#7 0x00000000032d84ac in std::pair<YAML::Node, YAML::Node>::pair<YAML::Node, YAML::Node, true>(YAML::Node const&, YAML::Node const&) ()
#8 0x00000000032d6f2d in YAML::detail::iterator_value::iterator_value(YAML::Node const&, YAML::Node const&) ()
#9 0x00000000032d8b38 in YAML::detail::iterator_base<YAML::detail::iterator_value const>::operator*() const ()
#10 0x00000000032d6539 in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#11 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#12 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#13 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#14 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
。。。。。。
#15072 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15073 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15074 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15075 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15076 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15077 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15078 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15079 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15080 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15081 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15082 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15083 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15084 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15085 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15086 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15087 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15088 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15089 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15090 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15091 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15092 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15093 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15094 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
。。。。。。

#15410 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15411 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15412 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15413 0x00000000032d641e in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15414 0x00000000032d655b in logtail::ConvertYamlToJson(YAML::Node const&) [clone .localalias] ()
#15415 0x000000000087e068 in logtail::ParseConfigDetail(std::string const&, std::string const&, Json::Value&, std::string&) ()
#15416 0x000000000087dcfe in logtail::LoadConfigDetailFromFile(std::filesystem::path const&, Json::Value&) ()
#15417 0x0000000000771263 in logtail::ConfigWatcher::CheckConfigDiff() ()
#15418 0x000000000073699c in logtail::Application::Start() ()
#15419 0x00000000006df0b7 in do_worker_process() ()
#15420 0x00000000006df2c1 in main ()

[blueskygzhz]

就是需要检查yaml里面是否存在循环依赖的情况

[Takuka0311]

是的，配置解析目前缺少对yaml的&和*语法的处理，这是因为iLogtail最初的采集配置都是json格式。近期会添加yaml内循环引用的检查

[Takuka0311]

已经提交了修复 #1507