Processing /home/alitrain/train-steer/extract_syswatch.C... *** Break *** segmentation violation E-TFile::TFile: file syswatch.root does not exist =========================================================== There was a crash. This is the entire stack trace of all threads: =========================================================== #0 0x00007fe6eb75e46a in __libc_waitpid (pid=24380, stat_loc=stat_loc entry=0x7fff9b93d010, options=options entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:31 #1 0x00007fe6eb6e2fae in do_system (line=0x2872f80 "/home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/etc/gdb-backtrace.sh 24365 1>&2") at ../sysdeps/posix/system.c:148 #2 0x00007fe6f2e91a44 in TUnixSystem::StackTrace() () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #3 0x00007fe6f2e90803 in TUnixSystem::DispatchSignals(ESignals) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #4 #5 0x00007fe6f2edbb19 in G__G__Base1_8_0_33(G__value*, char const*, G__param*, int) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #6 0x00007fe6f22dde59 in Cint::G__ExceptionWrapper(int (*)(G__value*, char const*, G__param*, int), G__value*, char*, G__param*, int) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #7 0x00007fe6f2386091 in G__execute_call () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #8 0x00007fe6f2386f02 in G__call_cppfunc () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #9 0x00007fe6f2366be5 in G__interpret_func () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #10 0x00007fe6f23559ed in G__getfunction () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #11 0x00007fe6f243abe1 in G__getstructmem(int, G__FastAllocString&, char*, int, char*, int*, G__var_array*, int) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #12 0x00007fe6f2433351 in G__getvariable () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #13 0x00007fe6f23339fd in G__getitem () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #14 0x00007fe6f233927c in G__getexpr () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #15 0x00007fe6f2357086 in G__getfunction () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #16 0x00007fe6f233417e in G__getitem () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #17 0x00007fe6f233927c in G__getexpr () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #18 0x00007fe6f233f0f8 in G__getexpr () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #19 0x00007fe6f23b1830 in G__exec_statement () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #20 0x00007fe6f2367fbc in G__interpret_func () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #21 0x00007fe6f2355a4c in G__getfunction () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #22 0x00007fe6f233417e in G__getitem () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #23 0x00007fe6f233927c in G__getexpr () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #24 0x00007fe6f2342258 in G__calc_internal () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #25 0x00007fe6f23c16dd in G__process_cmd () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCint.so #26 0x00007fe6f2e4be06 in TCint::ProcessLine(char const*, TInterpreter::EErrorCode*) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #27 0x00007fe6f2e49713 in TCint::ProcessLineSynch(char const*, TInterpreter::EErrorCode*) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #28 0x00007fe6f2d9d976 in TApplication::ExecuteFile(char const*, int*, bool) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #29 0x00007fe6f2d9b533 in TApplication::ProcessLine(char const*, bool, int*) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libCore.so #30 0x00007fe6f01a0621 in TRint::Run(bool) () from /home/alitrain/packages/VO_ALICE/ROOT/v5-34-08-6/v5-34-08-6/lib/libRint.so #31 0x00000000004022ee in main (argc=1, argv=0x7fff9b970f98) at /opt/aliroot/data/src/vAN-20140818/apps/aliroot/aliroot/work/AliRoot-vAN-20140818/ALIROOT/aliroot.cxx:113 =========================================================== The crash is most likely caused by a problem in your script. Try to compile it (.L myscript.C+g) and fix any errors. If that does not help then please submit a bug report at http://root.cern.ch/bugs. Please post the ENTIRE stack trace from above as an attachment in addition to anything else that might help us fixing this issue. Function extract_syswatch() busy flag cleared