Re: [PATCH 00/10] ipc MSG_COPY fixes

From: Andrew Morton
Date: Thu Feb 28 2013 - 18:46:25 EST

On Mon, 25 Feb 2013 21:21:37 -0500
Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> wrote:

> Over the weekend testing with trinity on KVM, I hit a similar oops
> (pasted below) to what others have already reported here
> While trying to uncover the underlying cause of the list corruption,
> I uncovered two other bugs which are addressed in
> ipc: Fix potential oops when src msg > 4k w/ MSG_COPY
> ipc: Don't allocate a copy larger than max
> The other cleanup was incidental to trying to uncover the oops (so far
> unsuccessfully).

afacit, only the above two are needed in 3.9 and 3.8.x, agree?

The changelog for "ipc: Don't allocate a copy larger than max" is
rather poor - it doesn't actually describe the bug's effects, so people
will have trouble understanding whether they need the patch in their
kernels. Can you please send along some additional description of this

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