访问vars信息core

[yanglimingcn]

Describe the bug (描述bug)

======= Backtrace: =========
/lib64/libc.so.6(+0x75e5e)[0x7f41f7f4be5e]
/lib64/libc.so.6(+0x78cad)[0x7f41f7f4ecad]
/usr/lib64/libjansson.so.4(json_delete+0x59)[0x7f41a00ea7f9]
/lib64/libnss_http.so.2(+0x2c10)[0x7f41b01eec10]
/lib64/libnss_http.so.2(_nss_http_getpwuid_r_locked+0xa0)[0x7f41b01ef1d7]
/lib64/libnss_http.so.2(_nss_http_getpwuid_r+0x48)[0x7f41b01ef26b]
/lib64/libc.so.6(getpwuid_r+0xdd)[0x7f41f7f8203d]
/lib64/libc.so.6(+0xae374)[0x7f41f7f84374]
/lib64/libc.so.6(getlogin_r+0x19)[0x7f41f7f844d9]
/bin/chunkserver[0x11e878f]
/bin/chunkserver(_ZNK4bvar13PassiveStatusISsE8describeERSob+0x3f)[0x11c715f]
/bin/chunkserver(_ZN4bvar8Variable16describe_exposedERKSsRSobNS_13DisplayFilterE+0xa5)[0x11e0e45]
/bin/chunkserver(_ZN4bvar8Variable12dump_exposedEPNS_6DumperEPKNS_11DumpOptionsE+0x146d)[0x11e3ded]
/bin/chunkserver(_ZN4brpc11VarsService14default_methodEPN6google8protobuf13RpcControllerEPKNS_11VarsRequestEPNS_12VarsResponseEPNS2_7ClosureE+0x6cb)[0x125a32b]
/bin/chunkserver(_ZN4brpc4vars10CallMethodEPKN6google8protobuf16MethodDescriptorEPNS2_13RpcControllerEPKNS2_7MessageEPS8_PNS2_7ClosureE+0x13e)[0x12f25ee]
/bin/chunkserver(_ZN4brpc6policy18ProcessHttpRequestEPNS_16InputMessageBaseE+0xe58)[0x1284608]
/bin/chunkserver(_ZN4brpc19ProcessInputMessageEPv+0xa)[0x1248fea]
/bin/chunkserver(_ZN4brpc14InputMessenger13OnNewMessagesEPNS_6SocketE+0x5e3)[0x1249d03]
/bin/chunkserver(_ZN4brpc6Socket12ProcessEventEPv+0xd)[0x120f6dd]
/bin/chunkserver(_ZN7bthread9TaskGroup11task_runnerEl+0xfa)[0x11f920a]
/bin/chunkserver(bthread_make_fcontext+0x21)[0x1366a31]
======= Memory map: ========

To Reproduce (复现方法)

curl http://127.0.0.1:38888/vars

Expected behavior (期望行为)

不会core

Versions (各种版本)
OS:centos6
Compiler: devtoolset-6 (https://www.softwarecollections.org/en/scls/rhscl/devtoolset-6/)
brpc: incubator-brpc-0.9.7
protobuf:protobuf-3.11.2

Additional context/screenshots (更多上下文/截图)

[UncleWangNearBy]

这个解决了吗
我也会出现core
但是堆栈不太一样
#0 0x000000303ec8973e in memcpy () from /lib64/libc.so.6
#1 0x0000003040004bf3 in ?? () from /lib64/libz.so.1
#2 0x0000003040005d7c in deflate () from /lib64/libz.so.1
#3 0x000000000165a65b in google::protobuf::io::GzipOutputStream::Deflate (this=0x7fe6ee6fdff0, flush=4)
at google/protobuf/io/gzip_stream.cc:268
#4 0x000000000165a744 in google::protobuf::io::GzipOutputStream::Close (this=this@entry=0x7fe6ee6fdff0)
at google/protobuf/io/gzip_stream.cc:323
#5 0x00000000011e4cf8 in brpc::policy::GzipCompress (msg=..., buf=buf@entry=0x7fe6ee6fe190, options_in=options_in@entry=0x0)
at src/brpc/policy/gzip_compress.cpp:102
#6 0x00000000011f6b0a in brpc::policy::HttpResponseSender::~HttpResponseSender (this=0x7fe766481108, __in_chrg=)
at src/brpc/policy/http_rpc_protocol.cpp:838
#7 0x00000000011f9924 in ~HttpResponseSenderAsDone (this=0x7fe766481100, __in_chrg=)
at src/brpc/policy/http_rpc_protocol.cpp:688
#8 brpc::policy::HttpResponseSenderAsDone::~HttpResponseSenderAsDone (this=0x7fe766481100, __in_chrg=)
at src/brpc/policy/http_rpc_protocol.cpp:688
#9 0x00000000011bbebb in ~ClosureGuard (this=, __in_chrg=) at ./src/brpc/closure_guard.h:39
#10 brpc::StatusService::default_method (this=, cntl_base=0x7fe766453280, done=0x7fe766481100)
at src/brpc/builtin/status_service.cpp:234
#11 0x00000000011a8dd3 in brpc::IndexService::default_method (this=, controller=0x7fe766453280,
done=0x7fe766481100) at src/brpc/builtin/index_service.cpp:63
#12 0x00000000012a2d95 in brpc::index::CallMethod (this=, method=, controller=,
request=, response=, done=) at src/brpc/builtin_service.pb.cc:7468
#13 0x00000000011f7f2a in brpc::policy::ProcessHttpRequest (msg=) at src/brpc/policy/http_rpc_protocol.cpp:1484
#14 0x000000000112f8aa in brpc::ProcessInputMessage (void_arg=void_arg@entry=0x7fe766478010) at src/brpc/input_messenger.cpp:135
#15 0x00000000011307a8 in operator() (this=, last_msg=0x7fe766478010) at src/brpc/input_messenger.cpp:141
#16 brpc::InputMessenger::OnNewMessages (m=0x7fe766a61b40) at /usr/local/gcc4.9.2/include/c++/4.9.2/bits/unique_ptr.h:236
#17 0x00000000011592cd in brpc::Socket::ProcessEvent (arg=0x7fe766a61b40) at src/brpc/socket.cpp:1017
#18 0x000000000110f451 in bthread::TaskGroup::task_runner (skip_remained=) at src/bthread/task_group.cpp:296
#19 0x0000000001265251 in bthread_make_fcontext ()
Backtrace stopped: Cannot access memory at address 0x7fe6ee6ff000

[wwbmmm]

We close this issue because it is irreproducible and inactive for a long time.
If you can reproduce this issue with the latest version of bRPC, please reopen this issue and tell us how to reproduce.