From owner-freebsd-stable  Wed Mar  7 21:53:10 2001
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Date: Thu, 08 Mar 2001 01:01:59 -0500
From: Mathieu <mathieu@amx.dyn.dhs.org>
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To: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net>
Cc: "Dmitry A. Yanko" <fm@astral.ntu-kpi.kiev.ua>,
	freebsd-stable@FreeBSD.ORG
Subject: Re: panic, ipfw broken in stable?
References: <200103080537.VAA24549@gndrsh.dnsmgr.net>
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"Rodney W. Grimes" wrote:
> 
> > On Wed, Mar 07, 2001 at 11:28:49AM -0800, Rodney W. Grimes wrote:
> > > 0xc01a44cb is in some routine right before this, I suspect ip_input,
> > > can you get us the output of nm /kernel | grep c01a or whatever it
> > > takes to show us what code as at 0xc01a44cb???
> > >
> >
> > c01a3a48 T _ip_mcast_src
> > c01a39cc T _ip_mforward
> > c01a39c4 T _ip_mrouter_done
> > c01a39b8 T _ip_mrouter_get
> > c01a39ac T _ip_mrouter_set
> 
> ...
> 
> arghhhh... you need to use ``nm -n'' to get these sorted by
> address order.  Never mind, you gave me enough here I could
> just pipe it through sort and get:
> c01a3a34 T ipip_input
> c01a3a48 T _ip_mcast_src
> c01a3a50 T ip_rsvp_vif_init
> c01a3a5c T ip_rsvp_vif_done
> c01a3a68 T ip_rsvp_force_done
> c01a3a70 T ip_output
> c01a49ec T in_delayed_cksum
> c01a4a64 t ip_insertoptions
> c01a4c44 T ip_optcopy
> 
> I was wrong, it is not in ip_input, it is in ip_output.
> >
> > (gdb) x/10i 0xc01a44cb
> > 0xc01a44cb <ip_output+2651>:    incl   0x28(%edx)
> > 0xc01a44ce <ip_output+2654>:    mov    0xffffffcc(%ebp),%eax
> > 0xc01a44d1 <ip_output+2657>:    mov    0x18(%eax),%eax
> > 0xc01a44d4 <ip_output+2660>:    add    %eax,0x38(%edx)
> > 0xc01a44d7 <ip_output+2663>:    mov    0x10(%ebp),%ecx
> > 0xc01a44da <ip_output+2666>:    pushl  (%ecx)
> > 0xc01a44dc <ip_output+2668>:    pushl  0xffffffd4(%ebp)
> > 0xc01a44df <ip_output+2671>:    pushl  0xffffffcc(%ebp)
> > 0xc01a44e2 <ip_output+2674>:    mov    0xffffffbc(%ebp),%ebx
> > 0xc01a44e5 <ip_output+2677>:    push   %ebx
> > (gdb)
> >
> 
> Hummm... did you get a crash dump?  Or can you.  If so a gdb backtrace
> would be most helpful.
> 
> --
> Rod Grimes - KD7CAX @ CN85sl - (RWG25)               rgrimes@gndrsh.dnsmgr.net
> 
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I don't know if it can help; but 4.3 was also crashing at me that way. I
disabled DummyNet, and then IpFw wasn't crashing anymore !

-- 
Mathieu

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