linux-kernel - Re: [PATCH] powerpc/32s: fix allow/prevent_user_access() when crossing segment boundaries.

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Message-Id: <46wv9b25JSz9sPK@ozlabs.org>
Date:   Sun, 20 Oct 2019 20:09:55 +1100 (AEDT)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@....fr>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/32s: fix allow/prevent_user_access() when crossing segment boundaries.

On Mon, 2019-10-14 at 16:51:28 UTC, Christophe Leroy wrote:
> Make sure starting addr is aligned to segment boundary so that when
> incrementing the segment, the starting address of the new segment is
> below the end address. Otherwise the last segment might get  missed.
> 
> Fixes: a68c31fc01ef ("powerpc/32s: Implement Kernel Userspace Access Protection")
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/d10f60ae27d26d811e2a1bb39ded47df96d7499f

cheers