[Click] segmentation fault in nsclick
Robert Sombrutzki
sombrutz at informatik.hu-berlin.de
Sun Oct 19 08:02:59 EDT 2008
Hi Eddie,
now it works again. Thanks a lot.
Robert
On Samstag, 18. Oktober 2008, Eddie Kohler wrote:
> Hi Robert,
>
> I think this is just a bug with that commit, which is probably fixed in
> 54d00b531cba889257b506c40ea2a3230bcc4739. Can you please try again?
> Thanks very much for the report.
>
> Eddie
>
> Robert Sombrutzki wrote:
> > Hi everyone,
> > i've a Segmentation Fault using nsclick. i just use a simple click script
> > and start a simulation with 3 nodes, but the ns2 crashs. this seems to be
> > related to the git-commit with the ID
> > 87b5fea5093045459ac6a899d386c61200850560 ( Comment:Greatly reduce parsing
> > and initialization time on large configs. Date: 2008-10-17).
> > If i remove this patch, evereything works fine again. I also recompile
> > the ns2 (version 2.30) since some headers of click changed, which are
> > maybe important for ns2, but i got the same result. just to remove the
> > mention patch helps. Any idea ? Has the click-skripts to be changes,
> > since this modifications on click ?
> > I also append the output of gdb. Maybe some of you has an idea.
> >
> > Best,
> > Robert
> >
> >
> > Here are my click-script ( very simpl. it does nothing) :
> >
> > ## test.click
> > elementclass Bar {
> > input[0]
> > -> [0]output;
> > }
> >
> > Idle()
> > -> Bar
> > -> Discard();
> >
> > Now the tcl-script:
> > ##test.tcl
> >
> > Propagation/Shadowing set pathlossExp_ 2.0 ;# path loss exponent
> > Propagation/Shadowing set std_db_ 4.0 ;# shadowing deviation (dB)
> > Propagation/Shadowing set dist0_ 1.0 ;# reference distance (m)
> > Propagation/Shadowing set seed_ 0 ;# seed for RNG
> >
> > Mac/802_11 set dataRate_ 11Mb
> > Mac/802_11 set basicRate_ 1Mb
> > Mac/802_11 set RTSThreshold_ 3000
> >
> > Phy/WirelessPhy set Pt_ 0.281838
> >
> > Phy/WirelessPhy set freq_ 2.472e9
> >
> > Phy/WirelessPhy set RXThresh_ 3.28984e-09
> >
> > Antenna/OmniAntenna set X_ 0
> > Antenna/OmniAntenna set Y_ 0
> > Antenna/OmniAntenna set Z_ 1.5
> > Antenna/OmniAntenna set Gt_ 1.0
> > Antenna/OmniAntenna set Gr_ 1.0
> >
> > set xsize 400
> > set ysize 400
> > set wtopo [new Topography]
> > $wtopo load_flatgrid $xsize $ysize
> >
> > set netchan Channel/WirelessChannel
> > set netphy Phy/WirelessPhy
> > set netmac Mac/802_11
> > set netprop Propagation/Shadowing
> > set antenna Antenna/OmniAntenna
> >
> > set netifq Queue/ClickQueue
> > set netll LL/Ext
> > LL set delay_ 1ms
> >
> > set node_dist 80
> > set nodecount 3
> > set stoptime 16.0
> >
> > Agent/Null set sport_ 5000
> > Agent/Null set dport_ 5000
> >
> > Agent/CBR set sport_ 5000
> > Agent/CBR set dport_ 5000
> >
> > Simulator set MacTrace_ ON
> > set ns_ [new Simulator]
> >
> > set tracefd [open "test.tr" w]
> > set namtrace [open "test.nam" w]
> > $ns_ trace-all $tracefd
> > $ns_ namtrace-all-wireless $namtrace $xsize $ysize
> > $ns_ use-newtrace
> >
> > set god_ [create-god $nodecount]
> >
> > Simulator set node_factory_ Node/MobileNode/ClickNode
> >
> > set chan_1_ [new $netchan]
> > set prop_ [new $netprop]
> >
> > set iptemplate "10.9.0.%d"
> > set mactemplate "00:03:47:70:89:%0x"
> > for {set i 0} {$i < $nodecount} {incr i} {
> > set node_ip($i) [format $iptemplate [expr $i+2]]
> > set node_mac($i) [format $mactemplate [expr $i]]
> > }
> >
> > $ns_ rtproto Empty
> >
> > for {set i 0} {$i < $nodecount } {incr i} {
> > set node_($i) [$ns_ node]
> >
> > $node_($i) add-interface $chan_1_ $prop_ $netll $netmac \
> > $netifq 1 $netphy $antenna $wtopo
> >
> > $node_($i) setmac "eth0" $node_mac($i)
> >
> > $node_($i) random-motion 0
> > $node_($i) topography $wtopo
> > $node_($i) nodetrace $tracefd
> >
> > [$node_($i) set classifier_] setnodename "node$i"
> > }
> > for {set i 0} {$i < ( $nodecount - 1 ) } {incr i} {
> > [$node_($i) entry] loadclick "test.click"
> > }
> >
> > for {set i 0} {$i < $nodecount} {incr i} {
> > $ns_ at 0.0 "[$node_($i) entry] runclick"
> > }
> >
> > set startxmittime 0
> > set xmitrate 4
> > set xmitinterval 0.25
> > set packetsize 64
> >
> >
> > for {set i 0} {$i < $nodecount} {incr i} {
> > $node_($i) set X_ [expr $i % 2 * $node_dist ]
> > $node_($i) set Y_ [expr $i / 2 * $node_dist ]
> > $node_($i) set Z_ 0
> > $node_($i) label $node_mac($i).brn
> > }
> >
> > for {set i 0} {$i < $nodecount} {incr i} {
> > $ns_ initial_node_pos $node_($i) 20
> > }
> >
> > $ns_ at $stoptime.000000001 "puts \"NS EXITING...\" ; $ns_ halt"
> >
> > $ns_ at $stoptime "$ns_ nam-end-wireless $stoptime"
> >
> > puts "Starting Simulation..."
> > $ns_ run
> >
> >
> > Now the GDB-output:
> > ombrutz at nfs-student2:~/brnnew_test$
> > gdb /home/sombrutz/develop/simulation/ns-2.30.new/bin/ns
> > GNU gdb 6.3
> > Copyright 2004 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you
> > are welcome to change it and/or distribute copies of it under certain
> > conditions. Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB. Type "show warranty" for
> > details. This GDB was configured as "i586-suse-linux"...Using host
> > libthread_db library "/lib/tls/libthread_db.so.1".
> >
> > (gdb) set args test.tcl
> > (gdb) run
> > Starting program: /home/sombrutz/develop/simulation/ns-2.30.new/bin/ns
> > test.tcl
> > num_nodes is set 3
> > INITIALIZE THE LIST xListHead
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x40149d37 in Click::Lexer::find_tunnel (this=0x86a4cc0, h=@0xbffaaf10,
> > isoutput=false, insert=true) at lexer.cc:1718
> > 1718 if (h.idx < _tunnels[m]->_port.idx)
> > Current language: auto; currently c++
> > (gdb) bt
> > #0 0x40149d37 in Click::Lexer::find_tunnel (this=0x86a4cc0,
> > h=@0xbffaaf10, isoutput=false, insert=true) at lexer.cc:1718
> > #1 0x4014c753 in Click::Lexer::add_tunnel (this=0x86a4cc0,
> > namein=@0xbffab064, nameout=@0xbffab04c) at lexer.cc:986
> > #2 0x4014d04d in Click::Lexer::Compound::expand_into (this=0x86b34b0,
> > lexer=0x86a4cc0, which=1, ve=@0xbffab164) at lexer.cc:376
> > #3 0x4014dfd5 in Click::Lexer::expand_compound_element (this=0x86a4cc0,
> > which=1, ve=@0x86b3dc8) at lexer.cc:1620
> > #4 0x4014e1d4 in Click::Lexer::create_router (this=0x86a4cc0,
> > master=0x86b89c0) at lexer.cc:1636
> > #5 0x40171590 in Click::click_read_router (filename=@0xbffab384,
> > is_expr=false, errh=0x868a968, initialize=false, master=0x0) at
> > driver.cc:507 #6 0x403269e8 in simclick_click_create (simnode=0x8669920,
> > router_file=0x863f638 "test.click") at nsclick.cc:103
> > #7 0x08068937 in ClickClassifier::command ()
> > #8 0x0827aeb8 in TclClass::dispatch_cmd ()
> > #9 0x0827eba0 in OTclDispatch (cd=<value optimized out>, in=0x846d228,
> > argc=4, argv=0xbffab59c) at otcl.c:434
> > #10 0x08283337 in TclInvokeStringCommand ()
> > #11 0x08284bc3 in TclEvalObjvInternal ()
> > #12 0x082ab4af in TclExecuteByteCode ()
> > #13 0x082b191c in TclCompEvalObj ()
> > #14 0x082ab5a9 in TclExecuteByteCode ()
> > #15 0x082b191c in TclCompEvalObj ()
> > #16 0x082d8b69 in TclObjInterpProc ()
> > #17 0x082d8f32 in TclProcInterpProc ()
> > #18 0x0827ece9 in OTclDispatch (cd=<value optimized out>, in=0x846d228,
> > argc=3, argv=0xbffac14c) at otcl.c:477
> > #19 0x08283337 in TclInvokeStringCommand ()
> > #20 0x08284bc3 in TclEvalObjvInternal ()
> > #21 0x082ab4af in TclExecuteByteCode ()
> > #22 0x082b191c in TclCompEvalObj ()
> > #23 0x08286fb2 in Tcl_EvalObjEx ()
> > #24 0x0828bf25 in Tcl_ForObjCmd ()
> > #25 0x08284bc3 in TclEvalObjvInternal ()
> > #26 0x08286356 in Tcl_EvalEx ()
> > #27 0x082c8c13 in Tcl_FSEvalFile ()
> > #28 0x082cbdf4 in Tcl_Main ()
> > #29 0x0804d7b7 in main ()
> > (gdb)
> > _______________________________________________
> > click mailing list
> > click at amsterdam.lcs.mit.edu
> > https://amsterdam.lcs.mit.edu/mailman/listinfo/click
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