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Dear all,

at KIT we are experiencing the following problem: on two servers, xrootd 
crashes all the time within minutes (usually <5 minutes) after restart.

The traceback always reads:
> (gdb) where
> #0 0x00000000004226da in XrdOucHash_Item<char>::Next (this=0x3e2) at 
> ../XrdOuc/XrdOucHash.hh:55
> #1 0x00000000004227ea in XrdOucHash<char>::Purge (this=0x4a3c5550) at 
> ../XrdOuc/XrdOucHash.icc:190
> #2 0x00002aaaab183747 in XrdxFtsOfs::FSctl (this=<value optimized 
> out>, cmd=<value optimized out>, args=@0xa7847a8, error=@0x4a3c5700,
> client=<value optimized out>) at 
> /tmp/xrootd-rpm/xrdinstall/usr/local/xrootd/include/xrootd/XrdOuc/XrdOucHash.hh:169
> #3 0x00000000004325fb in XrdXrootdProtocol::do_Qopaque 
> (this=0x2aaab00bcc10, qopt=32) at XrdXrootdXeq.cc:1367
> #4 0x0000000000438ead in XrdXrootdProtocol::do_Query 
> (this=0x2aaab00bcc10) at XrdXrootdXeq.cc:1428
> #5 0x000000000042bffb in XrdXrootdProtocol::Process2 
> (this=0x2aaab00bcc10) at XrdXrootdProtocol.cc:423
> #6 0x000000000042c613 in XrdXrootdProtocol::Process 
> (this=0x2aaab00bcc10, lp=0x2aaab00f1ce8) at XrdXrootdProtocol.cc:328
> #7 0x000000000043e4a2 in XrdLink::DoIt (this=0x2aaab00f1ce8) at 
> XrdLink.cc:415
> #8 0x0000000000443811 in XrdScheduler::Run (this=0x66ffa0) at 
> XrdScheduler.cc:289
> #9 0x000000000044383d in XrdStartWorking (carg=0x66ffa0) at 
> XrdScheduler.cc:70
> #10 0x0000000000458a7b in XrdSysThread_Xeq (myargs=0xb8f1ec0) at 
> XrdSysPthread.cc:86
> #11 0x00000036a96064a7 in start_thread () from /lib64/libpthread.so.0
> #12 0x00000036a8ed3c2d in clone () from /lib64/libc.so.6
I have uploaded a dump to 
http://www-ekp.physik.uni-karlsruhe.de/~jung/core.13189; we are using 
xrootd version 2.9.1 build 20100510-1509.

Could you please have a look at it and help us to find the cause? Thank 
you very much.


Best regards,

Christopher.

-- 
Karlsruhe Institute of Technology (KIT)
Steinbuch Centre for Computing (SCC)
Dr. Christopher Jung
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
phone: +49-721-608-28606
fax: +49-721-608-24972
e-mail: [log in to unmask]
web: http://www.kit.edu
KIT  University of the State of Baden-Wuerttemberg and
National Research Center of the Helmholtz Association