Re: [mpls-linux-general] LDP :(

[Bertrand L. <ble...@in...>]

Hi,

After some searchs, it apperas to be a bugg in glibc :
http://lists.debian.org/debian-glibc/2004/08/msg00102.html

i'm trying to resolve it !


Selon "James R. Leu" <jl...@mi...>:

> If you want to debug further, I would add a fprintf to the functions in
> impl_mm.c.  It will make ldpd very chatty, but it will help debug a
> "double free" which is kind of what it is looking like.
>
> On Thu, Apr 28, 2005 at 04:03:33PM +0200, Bertrand Lemaitre wrote:
> > I have the following :
> >
> > (gdb) where
> > #0  0xb7eae03e in malloc_consolidate (av=0xb7f5e480) at malloc.c:4391
> > #1  0xb7eaf02d in _int_malloc (av=0xb7f5e480, bytes=24) at malloc.c:3849
> > #2  0xb7eb05a1 in *__GI___libc_malloc (bytes=4096) at malloc.c:3308
> > #3  0xb7fce60b in zmalloc (type=115, size=4096) at memory.c:56
> > #4  0x0804a915 in mpls_malloc (size=4096) at impl_mm.c:12
> > #5  0x080525c1 in ldp_buf_create (size=4096) at ldp_buf.c:31
> > #6  0x0805c99c in ldp_if_create (g=0x809a050) at ldp_if.c:60
> > #7  0x08054cde in ldp_cfg_if_set (handle=0x809a050, i=0x80987c8, flag=3)
> >     at ldp_cfg.c:860
> > #8  0x0804c77a in ldp_interface_create (li=0x8098738) at ldp_interface.c:51
> > #9  0x0804c412 in ldp_new () at ldp.c:116
> > #10 0x0804c962 in mpls_ldp (self=0x80819e0, vty=0x8099818, argc=0,
> >     argv=0xbffff868) at ldp_vty.c:50
> > #11 0xb7fd3ae4 in cmd_execute_command_real (vline=0x8099fe0, vty=0x8099818,
> >     cmd=0x0) at command.c:2053
> > #12 0xb7fd3bd0 in cmd_execute_command (vline=0x8099fe0, vty=0x8099818,
> cmd=0x0)
> >     at command.c:2087
> > #13 0xb7fd59e8 in vty_command (vty=0x8099818, buf=0x80998f8 "mpls ldp ")
> >     at vty.c:357
> > #14 0xb7fd7247 in vty_read (thread=0x18) at vty.c:1209
> > #15 0xb7fd0b8b in thread_call (thread=0xbffffc4c) at thread.c:877
> > #16 0x0804c0e6 in main (argc=7, argv=0xbffffd54) at ldp_main.c:236
> >
> >
> > I'm searching too...
> >
> >
> >
> > Selon "James R. Leu" <jl...@mi...>:
> >
> > > You could try running ldpd in gdb to figure out where it is dieing.
> > >
> > > gdb /usr/sbin/ldpd
> > > run -A 127.0.0.1 -f /etc/quagga/ldpd.conf
> > > <use telnet to issue ldpd commands>
> > > <after ldpd dies>
> > > where
> > >
> > > Send the output to the list and we can start debugging it.
> > >
> > > On Thu, Apr 28, 2005 at 03:18:25PM +0200, Bertrand Lemaitre wrote:
> > > > Hi everybody,
> > > >
> > > > First of all, I can tell you that mpls between Quagga / Cisco is good.
> > > > But, Cisco -> Quagga takes more problems.
> > > >
> > > > I think it's linked to LDP.
> > > >
> > > > So, when I try to type 'mpls ldp' in the ldpd administration console
> (via
> > > > telnet), my console is over and I must kill the process ldpd to go back
> > > again.
> > > >
> > > > In the log, I have the follow message :
> > > >
> > > > Apr 28 14:53:45 NX7H7 kernel: MPLS mpls_skb_dump: from eth1 with len 88
> > > > (296)headroom=12 tailroom=28
> > > >
> > > >
> > > > Any idea ?
> > > >
> > > > With TcpDump, I don't see any ldp packets...
> > > >
> > > > Thanks for your help
> > > >
> > > > Bertrand Lemaitre
> > > >
> > > > ----------------------------------------------------------------
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> > >
> > > --
> > > James R. Leu
> > > jl...@mi...
> > >
> >
> >
> > Bertrand Lemaitre
> >
> > ----------------------------------------------------------------
> > This message was sent using IMP, the Internet Messaging Program.
>
> --
> James R. Leu
> jl...@mi...
>


Bertrand Lemaitre

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