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 0x00007f999726a82e in waitpid () from /lib64/libc.so.6 #1 0x00007f99971fc479 in do_system () from /lib64/libc.so.6 #2 0x00007f999919ff9a in Exec (shellcmd=, this=0x1ef7590) 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=0x1ef7590) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f99991a1f6c in TUnixSystem::DispatchSignals (this=0x1ef7590, 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 0x00007f9999018018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7fffd367ab10, funcname=funcname entry=0x334d050 "", libp=libp entry=0x7fffd367ab50, hash=hash entry=0) at /build/workarea/sw/20155909/1/BUILD/6e5ed1cd2caa32a01c6ce5bee5f7739d356af4c2/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f999b8f712e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f9999018000 , result7=result7 entry=0x7fffd367ab10, funcname=funcname entry=0x334d050 "", libp=libp entry=0x7fffd367ab50, 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 0x00007f999b9ecad4 in G__execute_call (result7=result7 entry=0x7fffd367ab10, libp=libp entry=0x7fffd367ab50, ifunc=ifunc entry=0x334d050, 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 0x00007f999b9ece69 in G__call_cppfunc (result7=0x7fffd367ab10, libp=0x7fffd367ab50, ifunc=0x334d050, ifn=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007f999b95b411 in G__interpret_func (result7=0x7fffd367ab10, funcname=0x32e4ff0 "Get", libp=0x7fffd367ab50, hash=288, p_ifunc=0x334d050, 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 0x00007f999b92f435 in G__getfunction (item=0x1f1a9d7 "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 0x00007f999b90c34d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x1f1a9d7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x204ad60 "gFile", known2=0x7fffd3685ff4, varglobal=0x7f999c1fe780 , 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 0x00007f999b904932 in G__getvariable (item=0x1f1a9d0 "gFile->Get(\"syswatch\")", known=0x7fffd3685ff4, varglobal=0x7f999c1fe780 , varlocal=0x7fffd3699320) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007f999b9d00db in G__getitem (item=0x1f1a9d0 "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 0x00007f999b9d68bc 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 0x00007f999b92ecf2 in G__getfunction (item=0x1f19da0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7fffd3693374, 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 0x00007f999b9d05a6 in G__getitem (item=0x1f19da0 "(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 0x00007f999b9d68bc 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 0x00007f999b9d5762 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 0x00007f999b97482d 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 0x00007f999b95d029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x32e4380, 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 0x00007f999b92f499 in G__getfunction (item=0x1f0bc50 "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 0x00007f999b9d05a6 in G__getitem (item=0x1f0bc50 "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 0x00007f999b9d68bc in G__getexpr (expression=expression entry=0x32e4830 "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 0x00007f999b9e05c8 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 0x00007f999b949827 in G__process_cmd (line=, prompt=, more=, err=0x7fffd36a7f4c, rslt=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007f999917e22a in TCint::ProcessLine (this=0x1efc2d0, line=0x32e3950 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7fffd36a8cfc) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007f9999179337 in TCint::ProcessLineSynch (this=0x1efc2d0, line=0x32e3950 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7fffd36a8cfc) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007f99991e814d in TApplication::ExecuteFile (file=, error=0x7fffd36a8cfc, keep=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007f99991e9154 in TApplication::ProcessLine (this=0x28ab950, line=, sync=, err=0x7fffd36a8cfc) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007f99acb112d1 in TRint::Run (this=0x28ab950, 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=0x7fffd36aaee8) 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