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 0x00007f5fb1f3982e in waitpid () from /lib64/libc.so.6 #1 0x00007f5fb1ecb479 in do_system () from /lib64/libc.so.6 #2 0x00007f5fb3e6ef7a in Exec (shellcmd=, this=0x2592550) 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=0x2592550) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f5fb3e70f4c in TUnixSystem::DispatchSignals (this=0x2592550, 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 0x00007f5fb3ce6d88 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffe265918e0, funcname=funcname entry=0x3998ee0 "", libp=libp entry=0x7ffe26591920, hash=hash entry=0) at /build/workarea/sw/20155834/1/BUILD/9025f55a0fb3e87fca82cd93f2be92fd46fde85b/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f5fb663865e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f5fb3ce6d70 , result7=result7 entry=0x7ffe265918e0, funcname=funcname entry=0x3998ee0 "", libp=libp entry=0x7ffe26591920, 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 0x00007f5fb6579cc4 in G__execute_call (result7=result7 entry=0x7ffe265918e0, libp=libp entry=0x7ffe26591920, ifunc=ifunc entry=0x3998ee0, 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 0x00007f5fb657a059 in G__call_cppfunc (result7=0x7ffe265918e0, libp=0x7ffe26591920, ifunc=0x3998ee0, ifn=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/newlink.cxx:2612 #10 0x00007f5fb6666861 in G__interpret_func (result7=0x7ffe265918e0, funcname=0x392aa90 "Get", libp=0x7ffe26591920, hash=288, p_ifunc=0x3998ee0, 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 0x00007f5fb66877b5 in G__getfunction (item=0x25b5287 "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 0x00007f5fb65ea07d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x25b5287 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x26e5610 "gFile", known2=0x7ffe2659cdc4, varglobal=0x7f5fb6e85640 , 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 0x00007f5fb65e2662 in G__getvariable (item=0x25b5280 "gFile->Get(\"syswatch\")", known=0x7ffe2659cdc4, varglobal=0x7f5fb6e85640 , varlocal=0x7ffe265b00f0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/var.cxx:5407 #14 0x00007f5fb6698a3b in G__getitem (item=0x25b5280 "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 0x00007f5fb669f21c 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 0x00007f5fb6687072 in G__getfunction (item=0x25b4650 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffe265aa144, 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 0x00007f5fb6698f06 in G__getitem (item=0x25b4650 "(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 0x00007f5fb669f21c 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 0x00007f5fb669e0c2 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 0x00007f5fb65a1f3d 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 0x00007f5fb6668479 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x3929e20, 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 0x00007f5fb6687819 in G__getfunction (item=0x25a6440 "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 0x00007f5fb6698f06 in G__getitem (item=0x25a6440 "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 0x00007f5fb669f21c in G__getexpr (expression=expression entry=0x392a2f0 "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 0x00007f5fb66a8f28 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 0x00007f5fb65fdcb7 in G__process_cmd (line=, prompt=, more=, err=0x7ffe265bed1c, rslt=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/pause.cxx:2331 #27 0x00007f5fb3e3f08a in TCint::ProcessLine (this=0x2597030, line=0x39293f0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffe265bfacc) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/meta/src/TCint.cxx:549 #28 0x00007f5fb3e3a197 in TCint::ProcessLineSynch (this=0x2597030, line=0x39293f0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffe265bfacc) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/meta/src/TCint.cxx:631 #29 0x00007f5fb3ee409d in TApplication::ExecuteFile (file=, error=0x7ffe265bfacc, keep=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/base/src/TApplication.cxx:1110 #30 0x00007f5fb3ee50a4 in TApplication::ProcessLine (this=0x2f3b1d0, line=, sync=, err=0x7ffe265bfacc) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/base/src/TApplication.cxx:959 #31 0x00007f5fc773d2d1 in TRint::Run (this=0x2f3b1d0, 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=0x7ffe265c1cb8) 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