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Message-ID: <20061202011505.GA2728@codepoet.org> Date: Fri, 1 Dec 2006 18:15:05 -0700 From: Erik Andersen <andersen@...epoet.org> To: Christoph Anton Mitterer <calestyo@...entia.net> Cc: linux-kernel@...r.kernel.org Subject: Re: data corruption with nvidia chipsets and IDE/SATA drives // memory hole mapping related bug?! On Sat Dec 02, 2006 at 01:56:06AM +0100, Christoph Anton Mitterer wrote: > The issue was basically the following: > I found a severe bug mainly by fortune because it occurs very rarely. > My test looks like the following: I have about 30GB of testing data on > my harddisk,... I repeat verifying sha512 sums on these files and check > if errors occur. > One test pass verifies the 30GB 50 times,... about one to four > differences are found in each pass. Doh! I have a Tyan S2895 in my system, and I've been pulling my hair out trying to track down the cause of a similar somewhat rare failure for the pre-computer sha1 of a block of data to actually match the calculated sha1. I'd been hunting in vain the past few days trying to find a cause -- looking for buffer overflows, non thread safe code, or similar usual suspects. It is a relief to see I am not alone! -Erik -- Erik B. Andersen http://codepoet-consulting.com/ --This message was written using 73% post-consumer electrons-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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