Date: Thu, 04 Jan 2007 06:33:13 -0500 From: Randall Stewart <rrs@cisco.com> To: Ricardo Nabinger Sanchez <rnsanchez@wait4.org> Cc: freebsd-current@freebsd.org Subject: Re: A stuck system Message-ID: <459CE5F9.3020504@cisco.com> In-Reply-To: <20070103100555.3611b41c.rnsanchez@wait4.org> References: <45891FE9.4020700@cisco.com> <58281AA0-3738-490C-9EA8-7766033713A2@siliconlandmark.com> <458960F2.9090703@cisco.com> <200612281756.29949.jhb@freebsd.org> <4594F282.7080504@cisco.com> <20070103100555.3611b41c.rnsanchez@wait4.org>
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Ricardo Nabinger Sanchez wrote: > On Fri, 29 Dec 2006 05:48:34 -0500 > Randall Stewart <rrs@cisco.com> wrote: > >> Nope... its just a single port, on-motherboard msk0. >> >> It does wake up though if I ping any interface... >> >> I suspect it might be a hardware problem.. not sure >> yet :-0 > > How about installing a ping trap in the device driver to generate a dump? > What I mean is to, whenever the device driver receives a packet, it checks if > the packet is a special ping packet (with some specific data, like > "dumpdump..." in the data field), and if so, forces a dump so you can check > (luckily) where the system came from. > > It's a long shot, but perhaps it gives a hint. > > Does this behavior happens on IA-64 boxes? If so, the kernel could set up > the processor to save performance data (specifically the branch history), and > the special ping (or something else) could be used to print the branch buffer > history, instead of dumping a core. Debugging symbols would be a must, I > believe. > Well... the machine is only a p4d gigabit motherboard... I am more and more suspecting a hardware problem. There is a em card in the machine and the motherboard msk card. The most recent update of the msk card seems to crash the system at startup.. so I took it out of my load config.. have not played with it yet.. Previously I could ping the msk net.. and the machine would wakeup.. now that I don't have the msk card.. guess what.. pinging the em0 card DOES NOT wake the machine up.. I bet there is some foul-up on the motherboard causing it to not deliver interrupts until another one (on the mother board) comes in... oh well.. R -- Randall Stewart NSSTG - Cisco Systems Inc. 803-345-0369 <or> 803-317-4952 (cell)
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