From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
To: Matthew Garrett <mjg@redhat.com>
Cc: linux-acpi@vger.kernel.org, lenb@kernel.org, stuart_hayes@dell.com
Subject: Re: [PATCH] dell-laptop: Use buffer with 32-bit physical address
Date: Sat, 6 Feb 2010 13:38:09 -0200 [thread overview]
Message-ID: <20100206153809.GA31008@khazad-dum.debian.net> (raw)
In-Reply-To: <1265324214-7812-1-git-send-email-mjg@redhat.com>
On Thu, 04 Feb 2010, Matthew Garrett wrote:
> Currently the dell-laptop driver does not guarantee this, and when the
> buffer address is higher than 4GB, the address is truncated to 32 bits
> and the SMI handler writes to the wrong memory address.
Hmm, this is a very dangerous bug, with the potential to cause
page-cache/file system corruption and data loss, isn't it?
What kernel versions does it affect? How easy is it to trigger? Shouldn't
it go to -stable post-haste as soon as it is merged in mainline?
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
next prev parent reply other threads:[~2010-02-06 15:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-04 22:56 [PATCH] dell-laptop: Use buffer with 32-bit physical address Matthew Garrett
2010-02-06 15:38 ` Henrique de Moraes Holschuh [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-10-21 19:04 Stuart_Hayes
2009-10-22 1:57 ` Matthew Garrett
2009-10-22 16:27 ` Stuart_Hayes
2009-10-22 15:12 ` Bjorn Helgaas
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