Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 13 Apr 2000 20:48:16 -0400 (EDT)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        "brian j. peterson" <rbw@myplace.org>
Cc:        freebsd-alpha@FreeBSD.ORG
Subject:   Re: ICMP flood causes panic?
Message-ID:  <14582.26816.657967.136182@grasshopper.cs.duke.edu>
In-Reply-To: <Pine.BSF.4.21.0004131627530.51198-100000@malkavian.org>
References:  <Pine.BSF.4.21.0004131627530.51198-100000@malkavian.org>

next in thread | previous in thread | raw e-mail | index | archive | help
brian j. peterson writes:
 > amidst an ICMP flood today, my machine panicked.  i have included what i
 > think is the relevant syslog info below.  (the kernel on this box was
 > built from a CVSup to FreeBSD/alpha 4.0-CURRENT on or about March
 > 4th... world was rebuilt at the same time.)  anyone care to tell me where
 > the problem lies?  (my box, FreeBSD, both, neither?)  if more info is
 > required, please ask me for it.
 > 
<...>
 > Apr 13 16:16:21 nikita /kernel: mces    = 0x1
 > Apr 13 16:16:21 nikita /kernel: vector  = 0x660
 > Apr 13 16:16:21 nikita /kernel: param   = 0xfffffc0000006000
 > Apr 13 16:16:21 nikita /kernel: pc      = 0xfffffc0000383278
 > Apr 13 16:16:21 nikita /kernel: ra      = 0xfffffc00005075d4
 > Apr 13 16:16:21 nikita /kernel: curproc = 0
 > Apr 13 16:16:21 nikita /kernel: 
 > Apr 13 16:16:21 nikita /kernel: panic: machine check
 > Apr 13 16:16:21 nikita /kernel: 
 > Apr 13 16:16:21 nikita /kernel: syncing disks... ncr0:0: ERROR (20:0) (0-20-0) (8/13) @ (script 918:18000120).

There's really not a whole lot of information to go on here. It might
help if you were able to map the above pc and ra to functions in the
kernel.  If you have a kernel with symbols (kernel.debug from config
-g), try gdb on the kernel, then do

(gdb) l *0xfffffc0000383278
(gdb) l *0xfffffc00005075d4

If you don't have a debug kernel, map the addresses to functions via
nm -n.

BTW, Can you reproduce this?

Thanks,

Drew

------------------------------------------------------------------------------
Andrew Gallatin, Sr Systems Programmer	http://www.cs.duke.edu/~gallatin
Duke University				Email: gallatin@cs.duke.edu
Department of Computer Science		Phone: (919) 660-6590


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-alpha" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?14582.26816.657967.136182>