Dear experts, I am trying to collect my analysis results from different root files in a single plot. In order to do that I have to open the files sequentially, access some tree variables (and potentially do a quick selection) and then plot then on top of each other. My files are organized in different folders with different number of files in each folder, so i have a part of the code that does a recursive search to find all available root files in the given directory and sub directories and access them.
The issue is that I am facing quite a weird crash on lxplus after the 4th iteration on a 20 root file array, pertaining to a memory corruption:
*** Error in `/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/bin/root.exe': malloc(): memory corruption: 0x0000000005e5edc0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x82aa6)[0x7fcafca3aaa6]
/lib64/libc.so.6(__libc_malloc+0x4c)[0x7fcafca3d6fc]
/cvmfs/sft.cern.ch/lcg/releases/gcc/8.3.0-cebb0/x86_64-centos7/lib64/libstdc++.so.6(_Znwm+0x18)[0x7fcafd5566e8]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCore.so(_ZN8TStorage11ObjectAllocEm+0x9)[0x7fcafdaa3de9]
/afs/cern.ch/work/e/egkougko/private/RecoveringData_C.so(main+0x12f2)[0x7fcaef3947e2]
[0x7fcafe144031]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(_ZNK5cling19IncrementalExecutor14executeWrapperEN4llvm9StringRefEPNS_5ValueE+0x269)[0x7fcaf8231169]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(_ZN5cling11Interpreter11RunFunctionEPKN5clang12FunctionDeclEPNS_5ValueE+0x93)[0x7fcaf81c8d43]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(_ZN5cling11Interpreter16EvaluateInternalERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS_18CompilationOptionsEPNS_5ValueEPPNS_11TransactionEm+0x15a)[0x7fcaf81ce7ca]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(_ZN5cling11Interpreter7processERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPNS_5ValueEPPNS_11TransactionEb+0x111)[0x7fcaf81cedb1]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(_ZN5cling13MetaProcessor7processEN4llvm9StringRefERNS_11Interpreter17CompilationResultEPNS_5ValueEb+0x1bd)[0x7fcaf828540d]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(+0x3e28bc)[0x7fcaf81538bc]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCling.so(+0x3f7936)[0x7fcaf8168936]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCore.so(_ZN12TApplication11ProcessLineEPKcbPi+0xb6c)[0x7fcafda5574c]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libRint.so(_ZN5TRint13ProcessLineNrEPKcS1_Pi+0xc2)[0x7fcafdf09dc2]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libRint.so(_ZN5TRint15HandleTermInputEv+0x233)[0x7fcafdf0a133]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCore.so(_ZN11TUnixSystem16CheckDescriptorsEv+0x8b)[0x7fcafdb8b09b]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCore.so(_ZN11TUnixSystem16DispatchOneEventEb+0x558)[0x7fcafdb8ca58]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCore.so(_ZN7TSystem3RunEv+0xe1)[0x7fcafdab7eb1]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libCore.so(_ZN12TApplication3RunEb+0x1f)[0x7fcafda528ff]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libRint.so(_ZN5TRint3RunEb+0x456)[0x7fcafdf0b626]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/bin/root.exe[0x400a1a]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7fcafc9da555]
/cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/bin/root.exe[0x400a5f]
======= Memory map: ========
00400000-00401000 r-xp 00000000 00:38 633579750 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/bin/root.exe
00600000-00601000 r--p 00000000 00:38 633579750 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/bin/root.exe
00601000-00602000 rw-p 00001000 00:38 633579750 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/bin/root.exe
0252f000-06073000 rw-p 00000000 00:00 0 [heap]
7fcae0000000-7fcae0021000 rw-p 00000000 00:00 0
7fcae0021000-7fcae4000000 ---p 00000000 00:00 0
7fcae778e000-7fcae7889000 r--p 00000000 00:38 638548017 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/fonts/FreeSans.otf
7fcae7889000-7fcae78e8000 r-xp 00000000 00:38 633577302 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGpadv7.so
7fcae78e8000-7fcae7ae8000 ---p 0005f000 00:38 633577302 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGpadv7.so
7fcae7ae8000-7fcae7aea000 r--p 0005f000 00:38 633577302 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGpadv7.so
7fcae7aea000-7fcae7aeb000 rw-p 00061000 00:38 633577302 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGpadv7.so
7fcae7aeb000-7fcae7aef000 rw-p 00000000 00:00 0
7fcae7aef000-7fcae7b01000 r-xp 00000000 00:38 633577267 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGraphicsPrimitives.so
7fcae7b01000-7fcae7d01000 ---p 00012000 00:38 633577267 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGraphicsPrimitives.so
7fcae7d01000-7fcae7d02000 r--p 00012000 00:38 633577267 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGraphicsPrimitives.so
7fcae7d02000-7fcae7d03000 rw-p 00013000 00:38 633577267 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTGraphicsPrimitives.so
7fcae7d03000-7fcae7d04000 rw-p 00000000 00:00 0
7fcae7d04000-7fcae7d17000 r-xp 00000000 00:38 633576983 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTHistDraw.so
7fcae7d17000-7fcae7f17000 ---p 00013000 00:38 633576983 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTHistDraw.so
7fcae7f17000-7fcae7f18000 r--p 00013000 00:38 633576983 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTHistDraw.so
7fcae7f18000-7fcae7f19000 rw-p 00014000 00:38 633576983 /cvmfs/sft.cern.ch/lcg/releases/ROOT/6.18.04-c767d/x86_64-centos7-gcc8-opt/lib/libROOTHistDraw.so%
Does anyone have an ideRecoveringData.C (10.3 KB) a of what this could be? I am also uploading the macro that I wrote which i run afrter loading with .L .C+
Thanks in advance, every hint would be helpful!!
ROOT Version: 6.18/04
Platform: lxplus
Compiler: AClick