Date: Wed, 29 Oct 1997 08:16:06 -0700 (MST) From: Nate Williams <nate@mt.sri.com> To: "Brian N. Handy" <handy@sag.space.lockheed.com> Cc: Satoshi Asami <asami@cs.berkeley.edu>, freebsd-mobile@freebsd.org, Nate Williams <nate@sri.MT.net> Subject: Re: Real hackers run -current Message-ID: <199710291516.IAA11236@rocky.mt.sri.com> In-Reply-To: <Pine.OSF.3.96.971028222020.17778A-100000@sag.space.lockheed.com> References: <199710290408.UAA12369@silvia.HIP.Berkeley.EDU> <Pine.OSF.3.96.971028222020.17778A-100000@sag.space.lockheed.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> have scored one hang -- I had my modem and enet card in, and popped them > out simultaneously. This wedged the system pretty well! (Not sure if it > was the combimation of the two, or if my ethernet card was in a wierd > state.) I'm pretty sure this is a 'known race' that can't be worked around. Simply put, if you yank the cards out from under the system, there is a chance that you can't hang your system if the kernel is talking to the hardware at this point, and it's waiting for a result. The only solution to this is to write drivers that are *very* paranoid about the results, but these tend to be slower since sanity checks are done on everything, so that's not necessarily a good solution either. In any case, I'm not *really* concerned abou this sort of thing, since I can hang my Win95 box this way as well. :) Nate
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199710291516.IAA11236>