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We have observed cascading failures of XRootD 4.7 with identical signature SEGV in XrdLink::Reset.
Unfortuantely no way to get a core dump, but it seems like a systematic race condition when many clients reconnect.

#4 xrdmgmofs_stacktrace (sig=11) at /usr/src/debug/eos-4.1.31-1/mgm/XrdMgmOfs/Stacktrace.cc:59
#5
#6 XrdLink::Reset (this=0x333030322f35302f) at /usr/src/debug/xrootd/xrootd/src/Xrd/XrdLink.cc:158
#7 0x000000349046897d in XrdLink::Alloc (peer=..., opts=0) at /usr/src/debug/xrootd/xrootd/src/Xrd/XrdLink.cc:229
#8 0x0000003490467248 in XrdInet::Accept (this=0x7fab16e09080, opts=0, timeout=-1, theSem=0x7ffc4b17ffb0) at /usr/src/debug/xrootd/xrootd/src/Xrd/XrdInet.cc:114
#9 0x000000000040c785 in XrdMain::DoIt (this=0x7ffc4b180080) at /usr/src/debug/xrootd/xrootd/src/Xrd/XrdMain.cc:97
#10 0x000000349046d50b in XrdScheduler::Run (this=0x6103f8) at /usr/src/debug/xrootd/xrootd/src/Xrd/XrdScheduler.cc:357
#11 0x000000349046d659 in XrdStartWorking (carg=) at /usr/src/debug/xrootd/xrootd/src/Xrd/XrdScheduler.cc:87
#12 0x000000349042b44f in XrdSysThread_Xeq (myargs=0x7f9980e07bc0) at /usr/src/debug/xrootd/xrootd/src/XrdSys/XrdSysPthread.cc:86
#13 0x000000348f007aa1 in start_thread () from /lib64/libpthread.so.0
#14 0x000000348ece8bcd in clone () from /lib64/libc.so.6

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