Hi! Trying to download with 32 parallel (1 thready copy worked) copies on centos 7 with devtoolset 7 enabled i got this: ``` *** Error in `python3': double free or corruption (fasttop): 0x00007fce780022b0 *** ======= Backtrace: ========= /lib64/libc.so.6(+0x81329)[0x7fcf64caa329] /lib64/libstdc++.so.6(_ZNSs6assignERKSs+0x9e)[0x7fcf5603a07e] /home/adrian/.local/lib/python3.6/site-packages/pyxrootd/lib64/libXrdCl.so.3(+0x168ff5)[0x7fcf5670dff5] /home/adrian/.local/lib/python3.6/site-packages/pyxrootd/lib64/libXrdCl.so.3(_ZN5XrdCl14ClassicCopyJob3RunEPNS_19CopyProgressHandlerE+0x245c)[0x7fcf5671d8dc] /home/adrian/.local/lib/python3.6/site-packages/pyxrootd/lib64/libXrdCl.so.3(+0x15f220)[0x7fcf56704220] /home/adrian/.local/lib/python3.6/site-packages/pyxrootd/lib64/libXrdCl.so.3(_ZN5XrdCl10JobManager7RunJobsEv+0x9d)[0x7fcf56737e6d] /home/adrian/.local/lib/python3.6/site-packages/pyxrootd/lib64/libXrdCl.so.3(+0x192ee9)[0x7fcf56737ee9] /lib64/libpthread.so.0(+0x7ea5)[0x7fcf65707ea5] /lib64/libc.so.6(clone+0x6d)[0x7fcf64d27b0d] ``` full log https://asevcenc.web.cern.ch/asevcenc/xrootd_python_2free/error.txt -- 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/1576 ######################################################################## 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