linux-kernel - Re: [patch] iov_iter

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Message-ID: <4d569c330803060715s53de08d1w7131b8ae930abd4f@mail.gmail.com>
Date:	Thu, 6 Mar 2008 10:15:43 -0500
From:	"Kevin Coffman" <kwc@...i.umich.edu>
To:	"Nick Piggin" <npiggin@...e.de>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>, stable@...nel.org,
	"Alexey Dobriyan" <adobriyan@...il.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Kevin Coffman" <kwc@...i.umich.edu>
Subject: Re: [patch] iov_iter_advance fix

Thanks Nick,

I've verified this fixes the problem I was seeing.

On Thu, Mar 6, 2008 at 12:39 AM, Nick Piggin <npiggin@...e.de> wrote:
>
>  iov_iter_advance skips over zero-length iovecs, however it does not properly
>  terminate at the end of the iovec array. Fix this by checking against
>  i->count before we skip a zero-length iov.
>
>  The bug was reproduced with a test program that continually randomly creates
>  iovs to writev. The fix was also verified with the same program and also it
>  could verify that the correct data was contained in the file after each
>  writev.
>
>  2.6.25 and 2.6.24.stable requires this fix.
>
>  Signed-off-by: Nick Piggin <npiggin@...e.de>
>  Cc: stable@...nel.org

Tested-by: Kevin Coffman <kwc@...i.umich.edu>
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