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Date: Thu, 19 Sep 2002 12:41:17 -0700
From: Richard Henderson <rth@twiddle.net>
To: "Richard B. Johnson" <root@chaos.analogic.com>
Cc: Brian Gerst <bgerst@didntduck.org>, Petr Vandrovec <VANDROVE@vc.cvut.cz>,
       dvorak <dvorak@xs4all.nl>, linux-kernel@vger.kernel.org
Subject: Re: Syscall changes registers beyond %eax, on linux-i386
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In-Reply-To: <Pine.LNX.3.95.1020919152301.15882B-100000@chaos.analogic.com>; from root@chaos.analogic.com on Thu, Sep 19, 2002 at 03:40:52PM -0400
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On Thu, Sep 19, 2002 at 03:40:52PM -0400, Richard B. Johnson wrote:
> Well it's not modifying those values.

It's not modifying "a", true, but it _is_ modifying the parameter
area.  Which is exactly the kernel bug in question.

> It's really bad code because it could have done:
> 
> 	incl	$0x04(%esp)
> 	incl	$0x08(%esp)
> 	incl	$0x1c(%esp)
> 	jmp	bar

Yes, I know.


r~