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 0x00007f428b43f82e in waitpid () from /lib64/libc.so.6 #1 0x00007f428b3d1479 in do_system () from /lib64/libc.so.6 #2 0x00007f428d374f9a in Exec (shellcmd=, this=0xb8a590) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0xb8a590) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f428d376f6c in TUnixSystem::DispatchSignals (this=0xb8a590, sig=kSigSegmentationViolation) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007f428d1ed018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffddd897070, funcname=funcname entry=0x1fdc000 "", libp=libp entry=0x7ffddd8970b0, hash=hash entry=0) at /build/workarea/sw/20155901/1/BUILD/1836d44a77b6c9204176726b9c1c7b11ea5e76d7/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f428fac712e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f428d1ed000 , result7=result7 entry=0x7ffddd897070, funcname=funcname entry=0x1fdc000 "", libp=libp entry=0x7ffddd8970b0, hash=hash entry=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/Api.cxx:393 #8 0x00007f428fbbcad4 in G__execute_call (result7=result7 entry=0x7ffddd897070, libp=libp entry=0x7ffddd8970b0, ifunc=ifunc entry=0x1fdc000, ifn=ifn entry=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2408 #9 0x00007f428fbbce69 in G__call_cppfunc (result7=0x7ffddd897070, libp=0x7ffddd8970b0, ifunc=0x1fdc000, ifn=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007f428fb2b411 in G__interpret_func (result7=0x7ffddd897070, funcname=0x1f74f90 "Get", libp=0x7ffddd8970b0, hash=288, p_ifunc=0x1fdc000, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:5791 #11 0x00007f428faff435 in G__getfunction (item=0xbad9d7 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2660 #12 0x00007f428fadc34d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0xbad9d7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0xcddd60 "gFile", known2=0x7ffddd8a2554, varglobal=0x7f42903ce780 , objptr=2) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:6821 #13 0x00007f428fad4932 in G__getvariable (item=0xbad9d0 "gFile->Get(\"syswatch\")", known=0x7ffddd8a2554, varglobal=0x7f42903ce780 , varlocal=0x7ffddd8b5880) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007f428fba00db in G__getitem (item=0xbad9d0 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1906 #15 0x00007f428fba68bc in G__getexpr (expression=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #16 0x00007f428fafecf2 in G__getfunction (item=0xbacda0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffddd8af8d4, memfunc_flag=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2410 #17 0x00007f428fba05a6 in G__getitem (item=0xbacda0 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #18 0x00007f428fba68bc in G__getexpr (expression=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #19 0x00007f428fba5762 in G__getexpr (expression=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1446 #20 0x00007f428fb4482d in G__exec_statement (mparen=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/parse.cxx:6980 #21 0x00007f428fb2d029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x1f74320, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:6710 #22 0x00007f428faff499 in G__getfunction (item=0xb9ec50 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2901 #23 0x00007f428fba05a6 in G__getitem (item=0xb9ec50 "extract_syswatch()") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #24 0x00007f428fba68bc in G__getexpr (expression=expression entry=0x1f747d0 "extract_syswatch()") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #25 0x00007f428fbb05c8 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1071 #26 0x00007f428fb19827 in G__process_cmd (line=, prompt=, more=, err=0x7ffddd8c44ac, rslt=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007f428d35322a in TCint::ProcessLine (this=0xb8f2d0, line=0x1f738f0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffddd8c525c) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007f428d34e337 in TCint::ProcessLineSynch (this=0xb8f2d0, line=0x1f738f0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffddd8c525c) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007f428d3bd14d in TApplication::ExecuteFile (file=, error=0x7ffddd8c525c, keep=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007f428d3be154 in TApplication::ProcessLine (this=0x153efc0, line=, sync=, err=0x7ffddd8c525c) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007f42a0cdf2d1 in TRint::Run (this=0x153efc0, retrn=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/rint/src/TRint.cxx:417 #32 0x00000000004025a9 in main (argc=1, argv=0x7ffddd8c7448) at /build/workarea/sw/20155901/1/SOURCES/AliRoot/v5-09-33/v5-09-33/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