Date: Tue, 9 Oct 2018 23:36:41 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Dave Cottlehuber <dch@skunkwerks.at> Cc: freebsd-security@freebsd.org Subject: Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-18:08.lazyfpu Message-ID: <20181009203641.GB5335@kib.kiev.ua> In-Reply-To: <1538990471.3423409.1534301664.7759970E@webmail.messagingengine.com> References: <20180912054340.1267C13295@freefall.freebsd.org> <1536910798.329524.1507804736.2F76C06D@webmail.messagingengine.com> <1538990471.3423409.1534301664.7759970E@webmail.messagingengine.com>
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On Mon, Oct 08, 2018 at 11:21:11AM +0200, Dave Cottlehuber wrote: > On Fri, 14 Sep 2018, at 09:39, Dave Cottlehuber wrote: > > On Wed, 12 Sep 2018, at 07:43, FreeBSD Errata Notices wrote: > > > -----BEGIN PGP SIGNED MESSAGE----- > > > Hash: SHA512 > > > > > > ============================================================================= > > > FreeBSD-EN-18:08.lazyfpu Errata Notice > > > The FreeBSD Project > > > > > > Topic: LazyFPU remediation causes potential data corruption > > > > Data Corruption reads a bit like "Imminent SuperNova in Your Area".. I'm > > not really sure what it means for users & sysadmins. Given we've had the > > original lazyfpu patches out for 11.x for a few months[1]: > > > > - what might data corruption entail? The FPU registers can be corrupted. This was observed so far only on the in-kernel FPU consumer, i.e. aesni.ko. > > - has this been observed in the wild? Yes, see above. > > > > Many thanks for the efforts into making these patches available. > > Dave > > > > [1]: https://www.freebsd.org/security/advisories/FreeBSD-SA-18:07.lazyfpu.asc > > Hi secteam, can you shed any light on the above? > > Thanks > Dave > _______________________________________________ > freebsd-security@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-security > To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org"
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