linux-kernel - Re: [PATCH] proc: fix ->stack

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Message-ID: <1257086560.31587.7.camel@wall-e>
Date:	Sun, 01 Nov 2009 15:42:40 +0100
From:	Stefani Seibold <stefani@...bold.net>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	akpm@...ux-foundation.org, m.s.tsirkin@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] proc: fix ->stack_start in compat mode

Am Sonntag, den 01.11.2009, 15:43 +0300 schrieb Alexey Dobriyan:
> On Sun, Nov 01, 2009 at 10:54:05AM +0100, Stefani Seibold wrote:
> > Am Mittwoch, den 28.10.2009, 14:56 +0300 schrieb Alexey Dobriyan:
> > > Assign tsk->stack_start even when doing compat execve(2).
> > > 
> > > As side effect, fix segfault inside boehm-gc library.
> > > http://bugzilla.kernel.org/show_bug.cgi?id=14478
> > > 
> > > Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
> > > ---
> > > 
> > >  Michael, please, confirm.
> > > 
> > >  Stefani, I get "Stack usage: 0 kB", you may want to look at it.
> > > 
> > 
> > Under which circumstance do you get 0 kb reported? What is your system
> > (mmu/nommu, 32bit/64bit, architecture and so on).
> 
> Well, no wonder it doesn't work:
> 
> 	#define KSTK_ESP(tsk)           -1 /* sorry. doesn't work for syscall. */
> 
> How does it supposed to work on live task?

Can you write it in a full sentence? Where did you located this define?


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