Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Tue, 30 Jul 2019 11:37:13 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Will Deacon <will@kernel.org>
Cc:     linux-kernel@vger.kernel.org, Will Deacon <will.deacon@arm.com>,
        "# 4 . 9+" <stable@vger.kernel.org>,
        Aurelien Jarno <aurelien@aurel32.net>,
        Arnd Bergmann <arnd@arndb.de>,
        Dominik Brodowski <linux@dominikbrodowski.net>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Oleg Nesterov <oleg@redhat.com>,
        Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: [PATCH] arm64: compat: Provide definition for COMPAT_SIGMINSTKSZ
Message-ID: <20190730093713.GB15402@kroah.com>
References: <20190730092547.1284-1-will@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190730092547.1284-1-will@kernel.org>
User-Agent: Mutt/1.12.1 (2019-06-15)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Tue, Jul 30, 2019 at 10:25:47AM +0100, Will Deacon wrote:
> From: Will Deacon <will.deacon@arm.com>
> 
> [ Upstream commit 24951465cbd279f60b1fdc2421b3694405bcff42 ]
> 
> arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value
> for compat tasks.
> 
> Cc: <stable@vger.kernel.org> # 4.9+
> Cc: Aurelien Jarno <aurelien@aurel32.net>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: Dominik Brodowski <linux@dominikbrodowski.net>
> Cc: "Eric W. Biederman" <ebiederm@xmission.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Al Viro <viro@zeniv.linux.org.uk>
> Cc: Oleg Nesterov <oleg@redhat.com>
> Reviewed-by: Dave Martin <Dave.Martin@arm.com>
> Reported-by: Steve McIntyre <steve.mcintyre@arm.com>
> Tested-by: Steve McIntyre <93sam@debian.org>
> Signed-off-by: Will Deacon <will.deacon@arm.com>
> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> ---
> 
> Aurelien points out that this didn't get selected for -stable despite its
> counterpart (22839869f21a ("signal: Introduce COMPAT_SIGMINSTKSZ for use
> in compat_sys_sigaltstack")) being backported to 4.9. Oops.

So this needs to go into 4.9.y, 4.14.y, and 4.19.y?

thanks,

greg k-h