From owner-freebsd-current  Fri Jan  7  0:26: 1 2000
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From: Soren Schmidt <sos@freebsd.dk>
Message-Id: <200001070824.JAA29548@freebsd.dk>
Subject: Re: ATA driver problems
In-Reply-To: <00Jan7.100119est.40323@border.alcanet.com.au> from Peter Jeremy at "Jan 7, 2000 10:01:19 am"
To: peter.jeremy@alcatel.com.au (Peter Jeremy)
Date: Fri, 7 Jan 2000 09:24:48 +0100 (CET)
Cc: freebsd-current@FreeBSD.ORG
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It seems Peter Jeremy wrote:
> On 2000-Jan-06 10:38:51 +1100, I wrote:
> ["dd if=/dev/rad0c of=/dev/null bs=64k" dies with an error]
> 
> I did some poking around and found that there are two bugs which
> conspire together to cause this:
> 1) diskstrategy() does not detect dscheck() returning EOF, instead
>    passing a zero-length request to the underlying driver.
> 2) The ata-disk driver doesn't check for (and ignore) zero-length
>    requests, instead passing them onto the disk.
> 
> See kern/15956 for details and patches.

Thanks! I'll take a look at it!

-Søren


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