Date: Sun, 14 Dec 2014 16:21:52 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Alexey Dokuchaev <danfe@FreeBSD.org> Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Steven Hartland <steven@multiplay.co.uk>, svn-src-stable-10@freebsd.org Subject: Re: svn commit: r275742 - in stable: 10/contrib/llvm/lib/Transforms/Vectorize 10/sys/sys 9/contrib/llvm/lib/Transforms/Vectorize 9/sys/sys Message-ID: <BCA99B09-49DD-44C1-8F15-A9084C8675BD@FreeBSD.org> In-Reply-To: <20141214151719.GB76347@FreeBSD.org> References: <201412131214.sBDCESwJ033037@svn.freebsd.org> <548DA4A3.8020000@freebsd.org> <43A88D44-A799-46AB-8853-560407BABC84@FreeBSD.org> <20141214151719.GB76347@FreeBSD.org>
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--Apple-Mail=_279BC7EC-83DD-4B3C-81FD-833658439F75 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii On 14 Dec 2014, at 16:17, Alexey Dokuchaev <danfe@FreeBSD.org> wrote: > > On Sun, Dec 14, 2014 at 04:11:09PM +0100, Dimitry Andric wrote: >> Yes, this is quite nasty, and it does affect 10.1-RELEASE, 9.3-RELEASE, >> and any other release with clang 3.4.x, which turned on the vectorizer >> by default. > > Could it be the cause of "REDZONE: Buffer overflow detected. 16 bytes > corrupted after 0xd2375200 (256 bytes allocated)" bug reported by dhw@ > WRT nvidia-driver-340.46 on 2014-11-18 [1]? This is extremely unlikely, since the kernel is compiled without SSE. (The bug was in the vectorizer, which transforms loops into SSE constructs.) Does this problem disappear when both the kernel and the NVIDIA kernel module are compiled with -O1? -Dimitry --Apple-Mail=_279BC7EC-83DD-4B3C-81FD-833658439F75 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.26 iEYEARECAAYFAlSNqxYACgkQsF6jCi4glqNbqgCcCH9cA6OQGJwJ8flg79jd4m3N iQcAoL2TT2QnQ+m9Hr3W8gvlbLSABrS0 =q+b5 -----END PGP SIGNATURE----- --Apple-Mail=_279BC7EC-83DD-4B3C-81FD-833658439F75--
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