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 0x00007f005d33a82e in waitpid () from /lib64/libc.so.6 #1 0x00007f005d2cc479 in do_system () from /lib64/libc.so.6 #2 0x00007f005f26ff7a in Exec (shellcmd=, this=0x1595550) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0x1595550) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f005f271f4c in TUnixSystem::DispatchSignals (this=0x1595550, sig=kSigSegmentationViolation) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007f005f0e7d88 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffe6070f250, funcname=funcname entry=0x299b9f0 "", libp=libp entry=0x7ffe6070f290, hash=hash entry=0) at /build/workarea/sw/20155834/1/BUILD/9025f55a0fb3e87fca82cd93f2be92fd46fde85b/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f0061a3965e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f005f0e7d70 , result7=result7 entry=0x7ffe6070f250, funcname=funcname entry=0x299b9f0 "", libp=libp entry=0x7ffe6070f290, hash=hash entry=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/Api.cxx:393 #8 0x00007f006197acc4 in G__execute_call (result7=result7 entry=0x7ffe6070f250, libp=libp entry=0x7ffe6070f290, ifunc=ifunc entry=0x299b9f0, ifn=ifn entry=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/newlink.cxx:2408 #9 0x00007f006197b059 in G__call_cppfunc (result7=0x7ffe6070f250, libp=0x7ffe6070f290, ifunc=0x299b9f0, ifn=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/newlink.cxx:2612 #10 0x00007f0061a67861 in G__interpret_func (result7=0x7ffe6070f250, funcname=0x292da90 "Get", libp=0x7ffe6070f290, hash=288, p_ifunc=0x299b9f0, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/ifunc.cxx:5791 #11 0x00007f0061a887b5 in G__getfunction (item=0x15b8287 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/func.cxx:2660 #12 0x00007f00619eb07d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x15b8287 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x16e8610 "gFile", known2=0x7ffe6071a734, varglobal=0x7f0062286640 , objptr=2) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/var.cxx:6821 #13 0x00007f00619e3662 in G__getvariable (item=0x15b8280 "gFile->Get(\"syswatch\")", known=0x7ffe6071a734, varglobal=0x7f0062286640 , varlocal=0x7ffe6072da60) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/var.cxx:5407 #14 0x00007f0061a99a3b in G__getitem (item=0x15b8280 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1906 #15 0x00007f0061aa021c in G__getexpr (expression=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1488 #16 0x00007f0061a88072 in G__getfunction (item=0x15b7650 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffe60727ab4, memfunc_flag=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/func.cxx:2410 #17 0x00007f0061a99f06 in G__getitem (item=0x15b7650 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1918 #18 0x00007f0061aa021c in G__getexpr (expression=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1488 #19 0x00007f0061a9f0c2 in G__getexpr (expression=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1446 #20 0x00007f00619a2f3d in G__exec_statement (mparen=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/parse.cxx:6980 #21 0x00007f0061a69479 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x292ce20, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/ifunc.cxx:6710 #22 0x00007f0061a88819 in G__getfunction (item=0x15a9440 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/func.cxx:2901 #23 0x00007f0061a99f06 in G__getitem (item=0x15a9440 "extract_syswatch()") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1918 #24 0x00007f0061aa021c in G__getexpr (expression=expression entry=0x292d2d0 "extract_syswatch()") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1488 #25 0x00007f0061aa9f28 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1071 #26 0x00007f00619fecb7 in G__process_cmd (line=, prompt=, more=, err=0x7ffe6073c68c, rslt=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/pause.cxx:2331 #27 0x00007f005f24008a in TCint::ProcessLine (this=0x159a040, line=0x292c3f0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffe6073d43c) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/meta/src/TCint.cxx:549 #28 0x00007f005f23b197 in TCint::ProcessLineSynch (this=0x159a040, line=0x292c3f0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffe6073d43c) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/meta/src/TCint.cxx:631 #29 0x00007f005f2e509d in TApplication::ExecuteFile (file=, error=0x7ffe6073d43c, keep=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/base/src/TApplication.cxx:1110 #30 0x00007f005f2e60a4 in TApplication::ProcessLine (this=0x1f3e0a0, line=, sync=, err=0x7ffe6073d43c) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/base/src/TApplication.cxx:959 #31 0x00007f0072b3e2d1 in TRint::Run (this=0x1f3e0a0, retrn=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/rint/src/TRint.cxx:417 #32 0x00000000004040c1 in main (argc=1, argv=0x7ffe6073f628) at /build/workarea/sw/20155839/1/SOURCES/AliRoot/v5-09-21/v5-09-21/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