linux-kernel - Re: [PATCH] powerpc/kasan: Fix KASAN_SHADOW_START on BOOK3S

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Date:   Tue, 18 Aug 2020 23:58:19 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Paul Mackerras <paulus@...ba.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/kasan: Fix KASAN_SHADOW_START on BOOK3S_32

On Wed, 5 Aug 2020 15:27:29 +0000 (UTC), Christophe Leroy wrote:
> On BOOK3S_32, when we have modules and strict kernel RWX, modules
> are not in vmalloc space but in a dedicated segment that is
> below PAGE_OFFSET.
> 
> So KASAN_SHADOW_START must take it into account.
> 
> MODULES_VADDR can't be used because it is not defined yet
> in kasan.h

Applied to powerpc/fixes.

[1/1] powerpc/kasan: Fix KASAN_SHADOW_START on BOOK3S_32
      https://git.kernel.org/powerpc/c/48d2f0407be7a36e8f20be37ec9121e021ef3964

cheers