linux-kernel - Re: [Patch] Incoming XPC channel messages can come in after the channel's partition structures have been torn down.

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Message-Id: <20101018124055.26325ea5.akpm@linux-foundation.org>
Date:	Mon, 18 Oct 2010 12:40:55 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Robin Holt <holt@....com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [Patch] Incoming XPC channel messages can come in after the
 channel's partition structures have been torn down.

On Mon, 18 Oct 2010 08:35:08 -0500
Robin Holt <holt@....com> wrote:

> Under some workloads, some channel messages have been observed being
> delayed on the sending side past the point where the receiving side
> has been able to tear down its partition structures.  This condition is
> already detected in xpc_handle_activate_IRQ_uv(), but that information
> is not given to xpc_handle_activate_mq_msg_uv().  As a result,
> xpc_handle_activate_mq_msg_uv() assumes the structures still exist and
> references them.

With what result?  Machine goes boom?

Would you consider this a 2.6.36 fix?  Backport to -stable?
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