Symptom is, that a process gets stuck during shutdown of the application which creates a severe problem on our automounted FUSE mounts:
Thread 2 (Thread 0x7fd24c7ff700 (LWP 25552)):
#0 0x00007fd26260850d in __lll_lock_wait () from /lib64/libpthread.so.0
#1 0x00007fd262603e5b in _L_lock_883 () from /lib64/libpthread.so.0
#2 0x00007fd262603d28 in pthread_mutex_lock () from /lib64/libpthread.so.0
#3 0x00007fd266272b1b in Lock (this=0x7fd24fcea230) at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysPthread.hh:220
#4 XrdSys::IOEvents::Poller::Detach (this=0x7fd24fcea1e0, cP=0x7fd248cd7b00, isLocked=@0x7fd24c7fe47f: true,
keep=<optimized out>) at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:809
#5 0x00007fd266272caf in XrdSys::IOEvents::Channel::Delete (this=0x7fd248cd7b00)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:300
#6 0x00007fd26653a2f9 in XrdCl::PollerBuiltIn::RemoveSocket (this=0x7fd24fc9a740, socket=0x7fd2491e5c00)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClPollerBuiltIn.cc:340
#7 0x00007fd2665a5e4b in XrdCl::AsyncSocketHandler::Close (this=0x7fd248d28580)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClAsyncSocketHandler.cc:197
#8 0x00007fd26653f7cf in XrdCl::Stream::ForceError (this=0x7fd249482a00, status=...)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClStream.cc:863
#9 0x00007fd26653d809 in XrdCl::Channel::ForceDisconnect (this=0x7fd249482400)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClChannel.cc:362
#10 0x00007fd26653b6f7 in XrdCl::PostMaster::ForceDisconnect (this=0x7fd24fc39200, url=...)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClPostMaster.cc:292
#11 0x00007fd266540b1c in XrdCl::Stream::OnReadTimeout (this=<optimized out>, substream=<optimized out>,
isBroken=@0x7fd24c7fe6af: false) at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClStream.cc:1013
#12 0x00007fd2665a67cf in XrdCl::AsyncSocketHandler::OnReadTimeout (this=this@entry=0x7fd248d28580)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClAsyncSocketHandler.cc:932
#13 0x00007fd2665a7c09 in XrdCl::AsyncSocketHandler::Event (this=0x7fd248d28580, type=<optimized out>)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClAsyncSocketHandler.cc:243
#14 0x00007fd266539327 in (anonymous namespace)::SocketCallBack::Event (this=0x7fd248c11640, chP=<optimized out>,
cbArg=<optimized out>, evFlags=<optimized out>) at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClPollerBuiltIn.cc:82
#15 0x00007fd26627462d in XrdSys::IOEvents::Poller::CbkXeq (this=this@entry=0x7fd24fcea1e0,
cP=cP@entry=0x7fd248cd7b00, events=events@entry=2, eNum=eNum@entry=0, eTxt=eTxt@entry=0x0)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:693
#16 0x00007fd266274946 in XrdSys::IOEvents::Poller::CbkTMO (this=0x7fd24fcea1e0)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:598
#17 0x00007fd266275998 in XrdSys::IOEvents::PollE::Begin (this=0x7fd24fcea1e0, syncsem=<optimized out>,
retcode=<optimized out>, eTxt=<optimized out>)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEventsPollE.icc:217
#18 0x00007fd26627237d in XrdSys::IOEvents::BootStrap::Start (parg=0x7fd250bfd830)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:131
#19 0x00007fd26627a9f7 in XrdSysThread_Xeq (myargs=0x7fd24fc3e6c0)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysPthread.cc:86
#20 0x00007fd262601e65 in start_thread () from /lib64/libpthread.so.0
#21 0x00007fd26232a88d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7fd266e3fe00 (LWP 25506)):
#0 0x00007fd262607afb in do_futex_wait.constprop.1 () from /lib64/libpthread.so.0
#1 0x00007fd262607b8f in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2 0x00007fd262607c2b in sem_wait@@GLIBC_2.2.5 () from /lib64/libpthread.so.0
#3 0x00007fd266273932 in Wait (this=<optimized out>) at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysPthread.hh:419
#4 XrdSys::IOEvents::Poller::SendCmd (this=this@entry=0x7fd24fcea1e0, cmd=...)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:974
#5 0x00007fd2662749c0 in XrdSys::IOEvents::Poller::Stop (this=this@entry=0x7fd24fcea1e0)
at /usr/src/debug/xrootd-4.11.0/src/XrdSys/XrdSysIOEvents.cc:1021
#6 0x00007fd266539727 in XrdCl::PollerBuiltIn::Stop (this=0x7fd24fc9a740)
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClPollerBuiltIn.cc:221
#7 0x00007fd2665255fa in XrdCl::DefaultEnv::Finalize ()
at /usr/src/debug/xrootd-4.11.0/src/XrdCl/XrdClDefaultEnv.cc:705
#8 0x00007fd26226600a in __cxa_finalize () from /lib64/libc.so.6
#9 0x00007fd266518e13 in __do_global_dtors_aux () from /opt/eos/xrootd/lib64/libXrdCl.so.2
#10 0x00007ffcfe6cd480 in ?? ()
#11 0x00007fd266c5703a in _dl_fini () from /lib64/ld-linux-x86-64.so.2
Backtrace stopped: frame did not save the PC
(gdb)
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