Date: Tue, 23 Mar 2004 15:49:37 -0800
From: Andrew Morton <akpm@osdl.org>
To: Kurt Garloff <garloff@suse.de>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com
Subject: Re: Non-Exec stack patches
Message-Id: <20040323154937.1f0dc500.akpm@osdl.org>
In-Reply-To: <20040323231256.GP4677@tpkurt.garloff.de>
References: <20040323231256.GP4677@tpkurt.garloff.de>
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Kurt Garloff <garloff@suse.de> wrote:
>
> find attached a patch to parse the elf binaries for a PT_GNU_STACK
> section to set the stack non-executable if possible.

This patch propagates the PT_GNU_STACK setting into the vma flags, allowing
the architecture to set the stack permissions non-executable if the
architecture chooses to do that, yes?

Which architectures are currently making their pre-page execute permissions
depend upon VM_EXEC?  Would additional arch patches be needed for this?

This may not get past Linus of course.  It doesn't even get past me with
that magical undocumented -1/0/+1 value of the executable_stack argument. 
Please replace that with a proper, commented, #defined-or-enumerated value,
thanks.

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