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To: Gleb Smirnoff <glebius@FreeBSD.org>
From: Ian FREISLICH <ianf@clue.co.za>
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Date: Wed, 26 Sep 2012 17:36:03 +0200
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Cc: freebsd-current@FreeBSD.org, Kim Culhan <w8hdkim@gmail.com>
Subject: Re: r240825 -current fault with backtrace
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Gleb Smirnoff wrote:
> On Sat, Sep 22, 2012 at 02:13:58PM -0400, Kim Culhan wrote:
> K> serial terminal not available, backtrace is a screen pic:
> Why didn't you make dump?
> 
> db> call doadump

I reliably get this panic on my routers when I reboot the carp
backup.  Shortly after the syncdev: igb0 looses link, the running
sync host panics:

db> bt
Tracing pid 11 tid 100123 td 0xfffffe000b053480
m_copym() at m_copym+0x37
ip_fragment() at ip_fragment+0x1c4
ip_output() at ip_output+0x6c1
pfsyncintr() at pfsyncintr+0xf5
intr_event_execute_handlers() at intr_event_execute_handlers+0xfd
ithread_loop() at ithread_loop+0x9e
fork_exit() at fork_exit+0x11e
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffff8463866cb0, rbp = 0 ---

My kernel dumps are however useless.  I do have serial console to
do whatever debugging we may need.

Ian

-- 
Ian Freislich