XGROUP HELP crashes the server

[talbii]

Description & Reproducing

Run Dragonfly, and send the XGROUP HELP command, which normally should list the available XGROUP xyz commands. Dragonfly (debug, optimized builds) then crashes, with the following output:

F20230221 17:27:20.083921 83220 transaction.cc:104] Check failed: absl::StartsWith(cid_->name(), "EVAL") 
*** Check failure stack trace: ***
    @     0x5620bf86975f  google::LogMessage::Fail()
    @     0x5620bf8696a5  google::LogMessage::SendToLog()
    @     0x5620bf868e7a  google::LogMessage::Flush()
    @     0x5620bf86ccf2  google::LogMessageFatal::~LogMessageFatal()
    @     0x5620bf2caf6f  dfly::Transaction::InitByArgs()
    @     0x5620be84df3a  dfly::Service::DispatchCommand()
    @     0x5620bf3fea24  facade::Connection::ParseRedis()
    @     0x5620bf402097  facade::Connection::IoLoop()
    @     0x5620bf3fb021  facade::Connection::ConnectionFlow()
    @     0x5620bf3f67c7  facade::Connection::HandleRequests()
    @     0x5620bf7546c9  util::ListenerInterface::RunSingleConnection()
    @     0x5620bf7501a7  _ZZN4util17ListenerInterface13RunAcceptLoopEvENKUlvE0_clEv
    @     0x5620bf768e0d  _ZSt13__invoke_implIvZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEET_St14__invoke_otherOT0_DpOT1_
    @     0x5620bf766c7d  _ZSt8__invokeIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEENSt15__invoke_resultIT_JDpT0_EE4typeEOS4_DpOS5_
    @     0x5620bf763451  _ZSt12__apply_implIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_St5tupleIJEEJEEDcOT_OT0_St16integer_sequenceImJXspT1_EEE
    @     0x5620bf7634ce  _ZSt5applyIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_St5tupleIJEEEDcOT_OT0_
    @     0x5620bf763713  _ZN5boost6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEE4run_EONS_7context5fiberE
    @     0x5620bf774014  _ZSt13__invoke_implIN5boost7context5fiberERMNS0_6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFS2_OS2_ERPS8_JS2_EET_St21__invoke_memfun_derefOT0_OT1_DpOT2_
    @     0x5620bf77342b  _ZSt8__invokeIRMN5boost6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFNS0_7context5fiberEOS8_EJRPS6_S8_EENSt15__invoke_resultIT_JDpT0_EE4typeEOSG_DpOSH_
    @     0x5620bf772e54  _ZNSt5_BindIFMN5boost6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFNS0_7context5fiberEOS8_EPS6_St12_PlaceholderILi1EEEE6__callIS8_JS9_EJLm0ELm1EEEET_OSt5tupleIJDpT0_EESt12_Index_tupleIJXspT1_EEE
    @     0x5620bf772843  _ZNSt5_BindIFMN5boost6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFNS0_7context5fiberEOS8_EPS6_St12_PlaceholderILi1EEEEclIJS8_ES8_EET0_DpOT_
    @     0x5620bf771a7e  _ZSt13__invoke_implIN5boost7context5fiberERSt5_BindIFMNS0_6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFS2_OS2_EPS9_St12_PlaceholderILi1EEEEJS2_EET_St14__invoke_otherOT0_DpOT1_
    @     0x5620bf770dfb  _ZSt8__invokeIRSt5_BindIFMN5boost6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFNS1_7context5fiberEOS9_EPS7_St12_PlaceholderILi1EEEEJS9_EENSt15__invoke_resultIT_JDpT0_EE4typeEOSK_DpOSL_
    @     0x5620bf76ee5b  _ZSt6invokeIRSt5_BindIFMN5boost6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFNS1_7context5fiberEOS9_EPS7_St12_PlaceholderILi1EEEEJS9_EENSt13invoke_resultIT_JDpT0_EE4typeEOSK_DpOSL_
    @     0x5620bf76c23d  _ZN5boost7context6detail12fiber_recordINS0_5fiberENS0_21basic_fixedsize_stackINS0_12stack_traitsEEESt5_BindIFMNS_6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFS3_OS3_EPSD_St12_PlaceholderILi1EEEEE3runEPv
    @     0x5620bf7695b8  _ZN5boost7context6detail11fiber_entryINS1_12fiber_recordINS0_5fiberENS0_21basic_fixedsize_stackINS0_12stack_traitsEEESt5_BindIFMNS_6fibers14worker_contextIZN4util17ListenerInterface13RunAcceptLoopEvEUlvE0_JEEEFS4_OS4_EPSE_St12_PlaceholderILi1EEEEEEEEvNS1_10transfer_tE
    @     0x7f4843fa324f  make_fcontext
*** SIGABRT received at time=1676993240 on cpu 0 ***
PC: @     0x7f4843488a7c  (unknown)  pthread_kill
    @     0x5620bf8bd4db         64  absl::lts_20230125::WriteFailureInfo()
    @     0x5620bf8bd6e5         96  absl::lts_20230125::AbslFailureSignalHandler()
    @     0x7f4843434520  (unknown)  (unknown)
[1]    83219 IOT instruction (core dumped)  ./dragonfly --logtostderr

System info

• OS: Linux Mint 21.1 (Vera)
• Kernel: 5.15.0-60-generic