Date: Mon, 16 Sep 2013 14:20:20 +0200 From: Ivan Voras <ivoras@freebsd.org> To: Alexander Motin <mav@freebsd.org> Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, svn-src-stable-9@freebsd.org Subject: Re: svn commit: r255567 - stable/9/sys/geom/zero Message-ID: <CAF-QHFWGcFdaHtJDCDLy7LtDcG=EB%2B05JUcOkT63FBbKXSLPug@mail.gmail.com> In-Reply-To: <201309141012.r8EACTW9032484@svn.freebsd.org> References: <201309141012.r8EACTW9032484@svn.freebsd.org>
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On 14 September 2013 12:12, Alexander Motin <mav@freebsd.org> wrote: > Add unmapped BIO support to GEOM ZERO if kern.geom.zero.clear is cleared. > + if (g_zero_clear && (bp->bio_flags & BIO_UNMAPPED) == 0) > memset(bp->bio_data, g_zero_byte, bp->bio_length); Umm, I might be wrong, but won't this basically export random kernel memory to anyone reading from /dev/gzero?
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