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From: Jeff Garzik <jeff@garzik.org>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: csnook@redhat.com, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Jay Cliburn <jacliburn@bellsouth.net>,
	stable@kernel.org
Subject: Re: [PATCH RESEND] atl1: fix 4G memory corruption bug
Date: Thu, 22 May 2008 17:20:30 -0400	[thread overview]
Message-ID: <4835E39E.90801@garzik.org> (raw)
In-Reply-To: <20080522220025.GA566@martell.zuzino.mipt.ru>

Alexey Dobriyan wrote:
> From: Alexey Dobriyan <adobriyan@gmail.com>
> 
> When using 4+ GB RAM and SWIOTLB is active, the driver corrupts
> memory by writing an skb after the relevant DMA page has been
> unmapped.  Although this doesn't happen when *not* using bounce
> buffers, clearing the pointer to the DMA page after unmapping
> it fixes the problem.
> 
> http://marc.info/?t=120861317000005&r=2&w=2
> 
> 
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
> Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
> ---
> 
>  drivers/net/atlx/atl1.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)

applied



      reply	other threads:[~2008-05-22 21:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-22 22:00 [PATCH RESEND] atl1: fix 4G memory corruption bug Alexey Dobriyan
2008-05-22 21:20 ` Jeff Garzik [this message]

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