Hallo Michal,
thanks for taking a look. I am not able to reproduce this on my desktop either but we get about one SEGV a minute on the ETF server. The script executing the xrdfs runs inside a docker container. I ask about resource exhaustion but people thought there was not shortage and looking at the running system i see 10 GB of memory available and memory of the user unlimited. It's the pre-production system, so i am certain Marian will allow us to replace the xrootd RPM for debugging.
The memory allocation was for a zero size, if i recall correctly. I have copied the core file to a web accessible area, http://cmssst.web.cern.ch/extra/core.1449254
Let me know if anything else would be useful/help.
Thanks,
cheers, Stephan

cat /etc/redhat-release

CentOS Linux release 7.9.2009 (Core)

uname -a

Linux etf-01.cern.ch 3.10.0-1160.80.1.el7.x86_64 #1 SMP Tue Nov 8 15:48:59 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

which xrdfs

/usr/bin/xrdfs

rpm -q -f /usr/bin/xrdfs

xrootd-client-5.5.1-1.4.osg36.el7.x86_64

cat /proc/meminfo | grep MemAvailable

MemAvailable: 10594572 kB

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