From: Paul Mundt <lethal@linux-sh.org>
To: David Howells <dhowells@redhat.com>
Cc: vapier.adi@gmail.com, rgetz@blackfin.uclinux.org,
gerg@uclinux.org, uclinux-dist-devel@blackfin.uclinux.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size
Date: Fri, 3 Jul 2009 02:21:08 +0900 [thread overview]
Message-ID: <20090702172108.GA3951@linux-sh.org> (raw)
In-Reply-To: <20090701120814.30741.10146.stgit@warthog.procyon.org.uk>
On Wed, Jul 01, 2009 at 01:08:14PM +0100, David Howells wrote:
> Ignore the loader's PT_GNU_STACK when calculating the stack size, and only
> consider the executable's PT_GNU_STACK, assuming the executable has one.
>
> Currently the behaviour is to take the largest stack size and use that, but
> that means you can't reduce the stack size in the executable. The loader's
> stack size should probably only be used when executing the loader directly.
>
> WARNING: This patch is slightly dangerous - it may render a system inoperable
> if the loader's stack size is larger than that of important executables, and
> the system relies unknowingly on this increasing the size of the stack.
>
> Signed-off-by: David Howells <dhowells@redhat.com>
Works for me too.
Acked-by: Paul Mundt <lethal@linux-sh.org>
next prev parent reply other threads:[~2009-07-02 17:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-01 12:08 [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size David Howells
2009-07-01 16:02 ` Mike Frysinger
2009-07-01 16:48 ` [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size [ver #2] David Howells
2009-07-01 16:49 ` [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size David Howells
2009-07-01 16:49 ` [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size [ver #2] David Howells
2009-07-02 17:21 ` Paul Mundt [this message]
2009-07-04 2:46 ` [PATCH] FDPIC: Ignore the loader's PT_GNU_STACK when calculating the stack size Pavel Machek
2009-07-08 11:01 ` David Howells
2009-07-04 3:34 ` Pavel Machek
2009-07-08 18:48 ` Mike Frysinger
2009-07-09 10:19 ` Pavel Machek
2009-07-09 10:59 ` David Howells
2009-07-11 21:30 ` Pavel Machek
2009-07-14 12:15 ` Mike Frysinger
2009-07-18 10:39 ` Pavel Machek
2009-07-18 19:11 ` Mike Frysinger
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