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From: msmeissn@cip.informatik.uni-erlangen.de (Marcus Meissner)
Newsgroups: comp.emulators.ms-windows.wine,comp.unix.bsd.freebsd.misc
Subject: Re: Wine960928 crashed FreeBSD 2.1.5
Date: 5 Nov 1996 08:36:35 GMT
Organization: University of Erlangen, Germany, CSD, Students Pool
Lines: 24
Message-ID: <55muaj$hqc@rznews.rrze.uni-erlangen.de>
References: <32762988.167EB0E7@watermarkgroup.com> <slrn57ghru.7i.hanspbie@zerium.idgonline.no> <E07Knq.7A9@unx.sas.com>
NNTP-Posting-Host: msmeissn@faui04d.informatik.uni-erlangen.de
Xref: euryale.cc.adfa.oz.au comp.emulators.ms-windows.wine:5895 comp.unix.bsd.freebsd.misc:30648
In article <E07Knq.7A9@unx.sas.com>,
Thomas David Rivers <sastdr@torpid.unx.sas.com> wrote:
>In article <slrn57ghru.7i.hanspbie@zerium.idgonline.no> hanspbie@idgonline.no (Hans Petter Bieker) writes:
...
>>If wine crashes you system runing non-root, then you system is bugy. This
>>should not be possible anyway.
> Ah... but remember to run Wine the operating system has to "hand over"
>the LDT to a user-mode program (essentially throwing out the baby
>with the bath water.)
> On most systems, this type of operation isn't something that is
>normally done, much less done on purpose.
>
> Wine, for instance, could accidently create LDTs that would totally
>scramble things and begin writing all over real memory - crashing whatever
>operating system lie beneath it.
AFAIK this is not possible using LDTs. (The LDT base entries as set by
modify_ldt are virtual addresses.)
Marcus
--
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