linux-kernel - Re: [PATCH] sparc: mark __arch_xchg() as __always

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Date:   Thu, 13 Jul 2023 10:55:24 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Mark Rutland <mark.rutland@....com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Arnd Bergmann <arnd@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>, Arnd Bergmann <arnd@...db.de>,
        Guenter Roeck <linux@...ck-us.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andi Shyti <andi.shyti@...ux.intel.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Palmer Dabbelt <palmer@...osinc.com>,
        sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sparc: mark __arch_xchg() as __always_inline


On Wed, 28 Jun 2023 11:49:18 +0200, Arnd Bergmann wrote:
> An otherwise correct change to the atomic operations uncovered an
> existing bug in the sparc __arch_xchg() function, which is calls
> __xchg_called_with_bad_pointer() when its arguments are unknown at
> compile time:
> 
> ERROR: modpost: "__xchg_called_with_bad_pointer" [lib/atomic64_test.ko] undefined!
> 
> [...]

Applied, thanks!

[1/1] sparc: mark __arch_xchg() as __always_inline
      https://git.kernel.org/kees/c/ec7633de404e

Best regards,
-- 
Kees Cook