linux-kernel - Re: [PATCH] ARM: export __memset/__memcpy/_

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Message-ID: <CACRpkdZgggMYqm1OBOUZtWQo2jArFcK8QqCf5Z1rviqk=r83mg@mail.gmail.com>
Date: Fri, 20 Jun 2025 22:26:55 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Russell King <linux@...linux.org.uk>, Arnd Bergmann <arnd@...db.de>, 
	Abbott Liu <liuwenliang@...wei.com>, Ard Biesheuvel <ardb@...nel.org>, 
	Florian Fainelli <f.fainelli@...il.com>, Ahmad Fatoum <a.fatoum@...gutronix.de>, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: export __memset/__memcpy/__memmove

On Fri, Jun 20, 2025 at 1:13 PM Arnd Bergmann <arnd@...nel.org> wrote:

> From: Arnd Bergmann <arnd@...db.de>
>
> When KASAN is locally disabled for one file, the string functions
> get redirected to internal helpers, but those are not actually exported,
> so this only works in built-in code but fails for loadable modules:
>
> ERROR: modpost: "__memset" [crypto/ecc.ko] undefined!
> ERROR: modpost: "__memcpy" [crypto/ecc.ko] undefined!
>
> Add the missig exports.

missing

>
> Fixes: d6d51a96c7d6 ("ARM: 9014/2: Replace string mem* functions for KASan")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij