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Date:   Sun, 26 Sep 2021 13:49:35 -0700 (PDT)
From:   David Rientjes <>
To:     Stephen Kitt <>
cc:     Christoph Lameter <>,
        Pekka Enberg <>,
        Joonsoo Kim <>,
        Andrew Morton <>,
        Vlastimil Babka <>,
        James Morris <>,
        "Serge E . Hallyn" <>,,,,,, Kees Cook <>

On Tue, 21 Sep 2021, Stephen Kitt wrote:

> This has served its purpose and is no longer used. All usercopy
> violations appear to have been handled by now, any remaining
> instances (or new bugs) will cause copies to be rejected.
> This isn't a direct revert of commit 2d891fbc3bb6 ("usercopy: Allow
> strict enforcement of whitelists"); since usercopy_fallback is
> effectively 0, the fallback handling is removed too.
> This also removes the usercopy_fallback module parameter on
> slab_common.
> Link:
> Signed-off-by: Stephen Kitt <>
> Suggested-by: Kees Cook <>

Acked-by: David Rientjes <>

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