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 0x00007f903bc1e82e in waitpid () from /lib64/libc.so.6 #1 0x00007f903bbb0479 in do_system () from /lib64/libc.so.6 #2 0x00007f903db53f9a in Exec (shellcmd=, this=0xa3f590) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0xa3f590) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f903db55f6c in TUnixSystem::DispatchSignals (this=0xa3f590, sig=kSigSegmentationViolation) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007f903d9cc018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffedd008750, funcname=funcname entry=0x1e916a0 "", libp=libp entry=0x7ffedd008790, hash=hash entry=0) at /build/workarea/sw/20155909/1/BUILD/6e5ed1cd2caa32a01c6ce5bee5f7739d356af4c2/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f90402ab12e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f903d9cc000 , result7=result7 entry=0x7ffedd008750, funcname=funcname entry=0x1e916a0 "", libp=libp entry=0x7ffedd008790, hash=hash entry=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/Api.cxx:393 #8 0x00007f90403a0ad4 in G__execute_call (result7=result7 entry=0x7ffedd008750, libp=libp entry=0x7ffedd008790, ifunc=ifunc entry=0x1e916a0, ifn=ifn entry=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2408 #9 0x00007f90403a0e69 in G__call_cppfunc (result7=0x7ffedd008750, libp=0x7ffedd008790, ifunc=0x1e916a0, ifn=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007f904030f411 in G__interpret_func (result7=0x7ffedd008750, funcname=0x1e2b150 "Get", libp=0x7ffedd008790, hash=288, p_ifunc=0x1e916a0, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:5791 #11 0x00007f90402e3435 in G__getfunction (item=0xa629f7 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2660 #12 0x00007f90402c034d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0xa629f7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0xb92d80 "gFile", known2=0x7ffedd013c34, varglobal=0x7f9040bb2780 , objptr=2) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:6821 #13 0x00007f90402b8932 in G__getvariable (item=0xa629f0 "gFile->Get(\"syswatch\")", known=0x7ffedd013c34, varglobal=0x7f9040bb2780 , varlocal=0x7ffedd026f60) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007f90403840db in G__getitem (item=0xa629f0 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1906 #15 0x00007f904038a8bc in G__getexpr (expression=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #16 0x00007f90402e2cf2 in G__getfunction (item=0xa61dc0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffedd020fb4, memfunc_flag=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2410 #17 0x00007f90403845a6 in G__getitem (item=0xa61dc0 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #18 0x00007f904038a8bc in G__getexpr (expression=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #19 0x00007f9040389762 in G__getexpr (expression=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1446 #20 0x00007f904032882d in G__exec_statement (mparen=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/parse.cxx:6980 #21 0x00007f9040311029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x1e2a4e0, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:6710 #22 0x00007f90402e3499 in G__getfunction (item=0xa53c50 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2901 #23 0x00007f90403845a6 in G__getitem (item=0xa53c50 "extract_syswatch()") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #24 0x00007f904038a8bc in G__getexpr (expression=expression entry=0x1e2a990 "extract_syswatch()") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #25 0x00007f90403945c8 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1071 #26 0x00007f90402fd827 in G__process_cmd (line=, prompt=, more=, err=0x7ffedd035b8c, rslt=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007f903db3222a in TCint::ProcessLine (this=0xa44360, line=0x1e29ab0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffedd03693c) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007f903db2d337 in TCint::ProcessLineSynch (this=0xa44360, line=0x1e29ab0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffedd03693c) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007f903db9c14d in TApplication::ExecuteFile (file=, error=0x7ffedd03693c, keep=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007f903db9d154 in TApplication::ProcessLine (this=0x13f3910, line=, sync=, err=0x7ffedd03693c) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007f90514c52d1 in TRint::Run (this=0x13f3910, retrn=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/rint/src/TRint.cxx:417 #32 0x00000000004025a9 in main (argc=1, argv=0x7ffedd038b28) at /build/workarea/sw/20155910/1/SOURCES/AliRoot/v5-09-34/v5-09-34/ALIROOT/aliroot.cxx:145 =========================================================== 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