This happens on xrootd cache cluster at UCSD (11 machines, xcache-00 to 10) so this is heavily loaded. Let me know if you need more info. (gdb) bt #0 0x00007f90e85e01f7 in raise () from /lib64/libc.so.6 #1 0x00007f90e85e18e8 in abort () from /lib64/libc.so.6 #2 0x00007f90e8ee6ac5 in __gnu_cxx::__verbose_terminate_handler() () from /lib64/libstdc++.so.6 #3 0x00007f90e8ee4a36 in ?? () from /lib64/libstdc++.so.6 #4 0x00007f90e8ee4a63 in std::terminate() () from /lib64/libstdc++.so.6 #5 0x00007f90e8ee4c83 in __cxa_throw () from /lib64/libstdc++.so.6 #6 0x00007f90e8f399e7 in std::__throw_length_error(char const*) () from /lib64/libstdc++.so.6 #7 0x00007f90e8f43d12 in std::string::_Rep::_S_create(unsigned long, unsigned long, std::allocator<char> const&) () from /lib64/libstdc++.so.6 #8 0x00007f90e8f4490b in std::string::_Rep::_M_clone(std::allocator<char> const&, unsigned long) () from /lib64/libstdc++.so.6 #9 0x00007f90e8f44fdc in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) () from /lib64/libstdc++.so.6 #10 0x00007f90e6076144 in GetHostId (this=<optimized out>) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClURL.hh:78 #11 XrdCl::FileStateHandler::OnOpen (this=0x7f8f945ac430, status=status@entry=0x7f8ed4083cd0, openInfo=0x7f8ed4083540, hostList=hostList@entry=0x7f909c189f00) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClFileStateHandler.cc:1187 #12 0x00007f90e6076c1b in (anonymous namespace)::OpenHandler::HandleResponseWithHosts (this=0x7f909c1882d0, status=0x7f8ed4083cd0, response=0x7f8ed4083520, hostList=0x7f909c189f00) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClFileStateHandler.cc:84 #13 0x00007f90e6057c3b in XrdCl::XRootDMsgHandler::HandleResponse ( this=this@entry=0x7f909c18a840) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClXRootDMsgHandler.cc:1128 #14 0x00007f90e605bd2f in XrdCl::XRootDMsgHandler::Process ( this=0x7f909c18a840, msg=0x7f90341817b0) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClXRootDMsgHandler.cc:375 #15 0x00007f90e603d29e in XrdCl::Stream::HandleIncMsgJob::Run ( this=0x7f903417ac20, arg=<optimized out>) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClStream.hh:284 #16 0x00007f90e60a0f3f in XrdCl::JobManager::RunJobs (this=0x7f90d0003680) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClJobManager.cc:148 #17 0x00007f90e60a1199 in RunRunnerThread (arg=<optimized out>) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClJobManager.cc:33 #18 0x00007f90e939de25 in start_thread () from /lib64/libpthread.so.0 #19 0x00007f90e86a334d in clone () from /lib64/libc.so.6 (gdb) up 11 #11 XrdCl::FileStateHandler::OnOpen (this=0x7f8f945ac430, status=status@entry=0x7f8ed4083cd0, openInfo=0x7f8ed4083540, hostList=hostList@entry=0x7f909c189f00) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClFileStateHandler.cc:1187 1187 std::string lastServer = pFileUrl->GetHostId(); (gdb) p pFileUrl $1 = (XrdCl::URL *) 0x7f909c187730 (gdb) p *pFileUrl $2 = { pHostId = "094AODv2\221\000\000\000\000\000\000\000\200\330\030\234\220\177\000\000 w\030\234\220\177\000\000\376\377\377\377\060\060_T/store/data/Run2016H/SingleElectron/MINIAOD/03Feb2017_ver2-v1/100000/5E9343DB-47EC-E611-B36F-0090FA9DFD5\220\000\000\000\000\000\000\000D\000\000\000\000\000\000\000\300Z\030\234\220\177\000\000\320Z\030\234\220\177", '\000' <repeats 18 times>, "x\314\030\234\220\177\000\000"...<Address 0x7f909ca86000 out of bounds>, pProtocol = "", pUserName = "948", pPassword = "", pHostName = "cmsxrootd.fnal.gov", pPort = 1094, pPath = "", pParams = std::map with 2 elements = {["oss.lcl"] = "1", ["tried"] = "xcache-08.t2.ucsd.edu"}, pURL = "root:[log in to unmask]:1094//store/data/Run2016H/SingleElectron/MINIAOD/03Feb2017_ver2-v1/100000/5E9343DB-47EC-E611-B36F-0090FA9DFD5A.root?oss.lcl=1&tried=xcache-08.t2.ucsd.edu"} (gdb) down #10 0x00007f90e6076144 in GetHostId (this=<optimized out>) at /usr/src/debug/xrootd-4.8.1/src/XrdCl/XrdClURL.hh:78 78 return pHostId; (gdb) info locals No locals. (gdb) p pHostId value has been optimized out # Note - pHostId in pFileUrl looks strange -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/666 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1