linux-kernel - Re: [PATCH] [STABLE backport 4.9] arm64, vdso: Define vdso

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Message-ID: <20190705205909.GJ10104@sasha-vm>
Date:   Fri, 5 Jul 2019 16:59:09 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     stable@...nel.org, Sasha Levin <alexander.levin@...rosoft.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kees Cook <keescook@...omium.org>,
        Jisheng Zhang <jszhang@...vell.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Will Deacon <will.deacon@....com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [STABLE backport 4.9] arm64, vdso: Define
 vdso_{start,end} as array

On Fri, Jul 05, 2019 at 08:47:20PM +0200, Arnd Bergmann wrote:
>From: Kees Cook <keescook@...omium.org>
>
>Commit dbbb08f500d6146398b794fdc68a8e811366b451 upstream.
>
>Adjust vdso_{start|end} to be char arrays to avoid compile-time analysis
>that flags "too large" memcmp() calls with CONFIG_FORTIFY_SOURCE.
>
>Cc: Jisheng Zhang <jszhang@...vell.com>
>Acked-by: Catalin Marinas <catalin.marinas@....com>
>Suggested-by: Mark Rutland <mark.rutland@....com>
>Signed-off-by: Kees Cook <keescook@...omium.org>
>Signed-off-by: Will Deacon <will.deacon@....com>
>Signed-off-by: Arnd Bergmann <arnd@...db.de>
>---
>Backported to 4.9, which is lacking the rework from
>2077be6783b5 ("arm64: Use __pa_symbol for kernel symbols")

I've queued both this and the 4.4 backport, thanks!

--
Thanks,
Sasha