Date: Tue, 31 Jan 2006 17:47:21 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-current@freebsd.org, Steve Kargl <sgk@troutmask.apl.washington.edu> Subject: Re: panic: Memory modified after free Message-ID: <20060131224721.GA16866@xor.obsecurity.org> In-Reply-To: <20060131220828.GA2953@garage.freebsd.pl> References: <20060131212209.GA870@troutmask.apl.washington.edu> <20060131215021.GG4395@haakonia.hitnet.RWTH-Aachen.DE> <20060131220828.GA2953@garage.freebsd.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
--liOOAslEiF7prFVr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 31, 2006 at 11:11:20PM +0100, Pawel Jakub Dawidek wrote: > On Tue, Jan 31, 2006 at 10:50:21PM +0100, Christian Brueffer wrote: > +> On Tue, Jan 31, 2006 at 01:22:09PM -0800, Steve Kargl wrote: > +> > The system is a dual proc Tyan K8S Pro with 12 GB of memory. > +> > The kernel is UP. This was recorded by hand. I have the crash dump. > +> >=20 > +> > Memory modified after free 0xffffff02505e0c00(504) val=3Ddeadc0dd @ > +> > 0xffffff02505e0cd0 > +> >=20 > +>=20 > +> For the record, I got this as well today. Here it was on my notebook > +> at system shutdown. >=20 > Cool, so you have a chance to try memguard(9) and verify my patch to > manual page:) >=20 > --- memguard.9 30 Dec 2005 12:28:19 -0000 1.2 > +++ memguard.9 31 Jan 2006 22:06:04 -0000 > @@ -56,6 +56,9 @@ vm.memguard.desc=3D<memory_type> > .Ed > .Pp > Where memory_type is a short description of memory type to monitor. > +The short description of memory type is the second argument to > +.Xr MALLOC_DECLARE 9 , > +so one has to find it in the kernel source. ITYM MALLOC_DEFINE? Kris --liOOAslEiF7prFVr Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFD3+j5Wry0BWjoQKURAvplAJsGfEqg4qq3pjgr+Vv7P70Ycu2yYACgiwhM hNYYQ5AjmGqqqUH/TYUvrSc= =vbeq -----END PGP SIGNATURE----- --liOOAslEiF7prFVr--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060131224721.GA16866>