linux-kernel - Re: [PATCH] increase AT_VECTOR_SIZE to terminate saved

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Message-Id: <20070919234411.d5bf33ea.akpm@linux-foundation.org>
Date:	Wed, 19 Sep 2007 23:44:11 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Olaf Hering <olaf@...fle.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] increase AT_VECTOR_SIZE to terminate saved_auxv
 properly

On Tue, 18 Sep 2007 13:55:04 +0200 Olaf Hering <olaf@...fle.de> wrote:

> include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO.
> fs/binfmt_elf.c has 14 unconditional NEW_AUX_ENT entries and 2
> conditional NEW_AUX_ENT entries.
> So in the worst case, saved_auxv does not get an AT_NULL entry at the
> end.
> 
> The saved_auxv array must be terminated with an AT_NULL entry.
> Make the size of mm_struct->saved_auxv arch dependend,
> based on the number of ARCH_DLINFO entries.

I'm not very confident that this will work well with the
already-queued move-mm_struct-and-vm_area_struct.patch.

It moves the saved_auxv[AT_VECTOR_SIZE] definition over into
mm_types.h and mm_types.h doesn't include sched.h.
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