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 0x00007f0c9afd682e in waitpid () from /lib64/libc.so.6 #1 0x00007f0c9af68479 in do_system () from /lib64/libc.so.6 #2 0x00007f0c9cf0bf9a in Exec (shellcmd=, this=0x2265590) 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=0x2265590) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f0c9cf0df6c in TUnixSystem::DispatchSignals (this=0x2265590, 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 0x00007f0c9cd84018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffee6c630f0, funcname=funcname entry=0x3694a40 "", libp=libp entry=0x7ffee6c63130, hash=hash entry=0) at /build/workarea/sw/20155867/1/BUILD/ee5a5133081c8d2b8f149e1757855fa62a1aa228/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f0c9f61c12e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f0c9cd84000 , result7=result7 entry=0x7ffee6c630f0, funcname=funcname entry=0x3694a40 "", libp=libp entry=0x7ffee6c63130, 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 0x00007f0c9f711ad4 in G__execute_call (result7=result7 entry=0x7ffee6c630f0, libp=libp entry=0x7ffee6c63130, ifunc=ifunc entry=0x3694a40, 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 0x00007f0c9f711e69 in G__call_cppfunc (result7=0x7ffee6c630f0, libp=0x7ffee6c63130, ifunc=0x3694a40, ifn=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007f0c9f680411 in G__interpret_func (result7=0x7ffee6c630f0, funcname=0x362d180 "Get", libp=0x7ffee6c63130, hash=288, p_ifunc=0x3694a40, 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 0x00007f0c9f654435 in G__getfunction (item=0x22889f7 "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 0x00007f0c9f63134d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x22889f7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x23b8d80 "gFile", known2=0x7ffee6c6e5d4, varglobal=0x7f0c9ff23780 , 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 0x00007f0c9f629932 in G__getvariable (item=0x22889f0 "gFile->Get(\"syswatch\")", known=0x7ffee6c6e5d4, varglobal=0x7f0c9ff23780 , varlocal=0x7ffee6c81900) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007f0c9f6f50db in G__getitem (item=0x22889f0 "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 0x00007f0c9f6fb8bc 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 0x00007f0c9f653cf2 in G__getfunction (item=0x2287dc0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffee6c7b954, 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 0x00007f0c9f6f55a6 in G__getitem (item=0x2287dc0 "(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 0x00007f0c9f6fb8bc 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 0x00007f0c9f6fa762 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 0x00007f0c9f69982d 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 0x00007f0c9f682029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x362c510, 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 0x00007f0c9f654499 in G__getfunction (item=0x2279b70 "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 0x00007f0c9f6f55a6 in G__getitem (item=0x2279b70 "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 0x00007f0c9f6fb8bc in G__getexpr (expression=expression entry=0x362c9e0 "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 0x00007f0c9f7055c8 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 0x00007f0c9f66e827 in G__process_cmd (line=, prompt=, more=, err=0x7ffee6c9052c, rslt=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007f0c9ceea22a in TCint::ProcessLine (this=0x226a360, line=0x362bae0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffee6c912dc) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007f0c9cee5337 in TCint::ProcessLineSynch (this=0x226a360, line=0x362bae0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffee6c912dc) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007f0c9cf5414d in TApplication::ExecuteFile (file=, error=0x7ffee6c912dc, keep=) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007f0c9cf55154 in TApplication::ProcessLine (this=0x2c0ea50, line=, sync=, err=0x7ffee6c912dc) at /build/workarea/sw/20155867/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007f0cb07e42d1 in TRint::Run (this=0x2c0ea50, 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=0x7ffee6c934c8) 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