From: Chris Wilson <chris@chris-wilson.co.uk>
To: "Carlos R. Mafra" <crmafra2@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.37: *ERROR* Attempting to mmap a purgeable buffer
Date: Sun, 09 Jan 2011 12:52:50 +0000 [thread overview]
Message-ID: <1bdc18$j72i3m@fmsmga002.fm.intel.com> (raw)
In-Reply-To: <20110109124423.GA9131@Pilar.site>
On Sun, 9 Jan 2011 13:44:23 +0100, "Carlos R. Mafra" <crmafra2@gmail.com> wrote:
> Is there something else I can do to help? Is this something fixable in the
> kernel or was it an error with my hardware? Suddenly being kicked out of X is
> quite bad, so I hope this can be fixed :-)
It's a use after free bug in the ddx, presumably. I haven't worked out how
yet since all active buffers should be appropriately marked. So either
there is a race in marking the buffer, or we failed to handle an error
appropriately or there is a real use-after-free. The kernel is being
gracious enough to warn you why userspace just crashed.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
prev parent reply other threads:[~2011-01-09 12:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-09 12:44 Carlos R. Mafra
2011-01-09 12:52 ` Chris Wilson [this message]
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