Date: Mon, 4 Jun 2001 14:40:07 -0700 (PDT) From: Kris Kennaway <kris@obsecurity.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/25974: Holes in files do not zero-fill Message-ID: <200106042140.f54Le7b15492@freefall.freebsd.org>
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The following reply was made to PR kern/25974; it has been noted by GNATS. From: Kris Kennaway <kris@obsecurity.org> To: Jim Zelenka <jimz@panasas.com> Cc: Kris Kennaway <kris@obsecurity.org>, freebsd-gnats-submit@freebsd.org Subject: Re: kern/25974: Holes in files do not zero-fill Date: Mon, 4 Jun 2001 14:36:27 -0700 On Sat, Jun 02, 2001 at 04:45:08PM -0400, Jim Zelenka wrote: > >For some reason this response did not appear in GNATS. I asked Dima > >to re-forward it. > > That's probably my fault; I sent two responses. In the first, I said > that I'd checked briefly, and I didn't see the problem. In the > second one, I said that more extensive testing made the problem > appear. The problem is particularly likely to occur on busy systems > or systems where lots of files were created and deleted between > runs of the test program. I suspect that the problem is that something > is not zeroing out a block that is getting reallocated, and so > old bits are coming back, but that's only based on empirical observation, > and not a reading of the code. We did fix a bug with this kind of symptoms a while back (and released an advisory; perhaps that is related?) Kris To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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