kern/178116: [tcp] [panic] Kernel panic: general protection fault in tcp_do_segment

[Nate Denning]

The following reply was made to PR kern/178116; it has been noted by GNATS.

From: Nate Denning <nate.denning at gmail.com>
To: Gleb Smirnoff <glebius at FreeBSD.org>
Cc: bug-followup at FreeBSD.org
Subject: Re: kern/178116: [tcp] [panic] Kernel panic: general protection fault in tcp_do_segment
Date: Wed, 1 May 2013 09:26:04 -0600

 On May 1, 2013, at 8:02 AM, Gleb Smirnoff <glebius at FreeBSD.org> wrote:
 
 >  Nate,
 >=20
 >  do you run any additional network modules: ipfw, pf, netgraph,
 > accept filters, etc? How your system differes from a default
 > installation?
 >=20
 
 Yes, ipfilter, accf_http and accf_data (accf is for Apache). No ipfw, =
 pf, or netgraph. Output of kldstat:
 
 Id Refs Address            Size     Name
  1   15 0xffffffff80200000 1558e18  kernel
  2    1 0xffffffff81759000 2324e0   zfs.ko
  3    2 0xffffffff8198c000 84e8     opensolaris.ko
  4    1 0xffffffff81a12000 330db    ipl.ko
  5    1 0xffffffff81a46000 163a     accf_http.ko
  6    1 0xffffffff81a48000 cda      accf_data.ko
 
 IPv4 is configured natively and IPv6 over a gif tunnel, with ipfilter =
 rules setup for both. Other than all that I'm not seeing anything =
 related to networking that is not default.
 
 >  Is it possible for you to run with INVARIANTS option in the kernel?
 > The option adds additional debugging, thus hurts system performance,
 > but with it we can obtain a more informative crashdump.
 >=20
 
 Yes, I can try that.
 
 Thanks,
 
 Nate