Date: Wed, 12 Jan 2005 23:22:40 +0800 From: Xin LI <delphij@frontfree.net> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: arch@freebsd.org Subject: Re: "Kernel" dumps. Message-ID: <20050112152240.GA6710@frontfree.net> In-Reply-To: <20050112131950.GN795@darkness.comp.waw.pl>
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[-- Attachment #1 --] On Wed, Jan 12, 2005 at 02:19:50PM +0100, Pawel Jakub Dawidek wrote: > Hi. > > We need improve our dumps, really. > > First of all they are too big, because we dump whole memory. > Second of all, they are not safe for our users. > > We should implement two things: > > - dumping only kernel pages (dump is smaller and without sensitive data > from userland processes); > - add a malloc(9) flag M_NOUMP which will prevent from dumping > pages with sensitive data (e.g. GBDE keys). > > Any VM-skilled volunteers? Pretty please... A friend of mine has recently implemented a ``mini-dump'', which is primarly a conceptional implementation that I need to do some clean-ups on my spare time. I think in order to have a successful ``kernel dump'' we need to keep least dependency on VM structures (and allow users to switch to a full dump when need). Cheers, -- Xin LI <delphij frontfree net> http://www.delphij.net/ See complete headers for GPG key and other information. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFB5UDA/cVsHxFZiIoRAuS8AJ9CyZoaC5N4OZIJtd91epfixdTFFwCfbBI3 oA1VuSbcumSiH8RpYmT6350= =bnfH -----END PGP SIGNATURE-----home | help
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