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 0x00007f473bf8c82e in waitpid () from /lib64/libc.so.6 #1 0x00007f473bf1e479 in do_system () from /lib64/libc.so.6 #2 0x00007f473dec1f9a in Exec (shellcmd=, this=0x1674590) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0x1674590) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f473dec3f6c in TUnixSystem::DispatchSignals (this=0x1674590, sig=kSigSegmentationViolation) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007f473dd3a018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffe83838bd0, funcname=funcname entry=0x2aa40f0 "", libp=libp entry=0x7ffe83838c10, hash=hash entry=0) at /build/workarea/sw/20155867/1/BUILD/ee5a5133081c8d2b8f149e1757855fa62a1aa228/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f47405d212e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f473dd3a000 , result7=result7 entry=0x7ffe83838bd0, funcname=funcname entry=0x2aa40f0 "", libp=libp entry=0x7ffe83838c10, hash=hash entry=0) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/Api.cxx:393 #8 0x00007f47406c7ad4 in G__execute_call (result7=result7 entry=0x7ffe83838bd0, libp=libp entry=0x7ffe83838c10, ifunc=ifunc entry=0x2aa40f0, ifn=ifn entry=0) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2408 #9 0x00007f47406c7e69 in G__call_cppfunc (result7=0x7ffe83838bd0, libp=0x7ffe83838c10, ifunc=0x2aa40f0, ifn=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007f4740636411 in G__interpret_func (result7=0x7ffe83838bd0, funcname=0x2a3d410 "Get", libp=0x7ffe83838c10, hash=288, p_ifunc=0x2aa40f0, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:5791 #11 0x00007f474060a435 in G__getfunction (item=0x16979f7 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2660 #12 0x00007f47405e734d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x16979f7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x17c7d80 "gFile", known2=0x7ffe838440b4, varglobal=0x7f4740ed9780 , objptr=2) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:6821 #13 0x00007f47405df932 in G__getvariable (item=0x16979f0 "gFile->Get(\"syswatch\")", known=0x7ffe838440b4, varglobal=0x7f4740ed9780 , varlocal=0x7ffe838573e0) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007f47406ab0db in G__getitem (item=0x16979f0 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1906 #15 0x00007f47406b18bc in G__getexpr (expression=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #16 0x00007f4740609cf2 in G__getfunction (item=0x1696dc0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffe83851434, memfunc_flag=0) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2410 #17 0x00007f47406ab5a6 in G__getitem (item=0x1696dc0 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #18 0x00007f47406b18bc in G__getexpr (expression=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #19 0x00007f47406b0762 in G__getexpr (expression=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1446 #20 0x00007f474064f82d in G__exec_statement (mparen=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/parse.cxx:6980 #21 0x00007f4740638029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x2a3c7a0, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:6710 #22 0x00007f474060a499 in G__getfunction (item=0x1688b70 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2901 #23 0x00007f47406ab5a6 in G__getitem (item=0x1688b70 "extract_syswatch()") at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #24 0x00007f47406b18bc in G__getexpr (expression=expression entry=0x2a3cc70 "extract_syswatch()") at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #25 0x00007f47406bb5c8 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1071 #26 0x00007f4740624827 in G__process_cmd (line=, prompt=, more=, err=0x7ffe8386600c, rslt=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007f473dea022a in TCint::ProcessLine (this=0x1679360, line=0x2a3bd70 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffe83866dbc) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007f473de9b337 in TCint::ProcessLineSynch (this=0x1679360, line=0x2a3bd70 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffe83866dbc) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007f473df0a14d in TApplication::ExecuteFile (file=, error=0x7ffe83866dbc, keep=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007f473df0b154 in TApplication::ProcessLine (this=0x201da50, line=, sync=, err=0x7ffe83866dbc) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007f475179a2d1 in TRint::Run (this=0x201da50, retrn=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/rint/src/TRint.cxx:417 #32 0x0000000000404089 in main (argc=1, argv=0x7ffe83868fa8) at /build/workarea/sw/20155867/1/SOURCES/AliRoot/v5-09-24/v5-09-24/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