linux-kernel - [2.6.23(?)=<] X used greatest stack depth: N bytes left

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Message-ID: <6101e8c40712281658i2ac7a27du4b0964afd043280e@mail.gmail.com>
Date:	Sat, 29 Dec 2007 01:58:44 +0100
From:	"Oliver Pinter (Pintér Olivér)" 
	<oliver.pntr@...il.com>
To:	"Randy Dunlap" <randy.dunlap@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: [2.6.23(?)=<] X used greatest stack depth: N bytes left

On 12/29/07, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> On Fri, 28 Dec 2007 22:11:25 +0100 Oliver Pinter (Pintér Olivér) wrote:
>
> > in newer kernel I recently see this warnings:
> >
> > X used greatest stack depth: N bytes left
> >
> > X E { program name }
> > N E { x byte }
> >
> > ----------------8<--------------
> > ...
> > khelper used greatest stack depth: 7496 bytes left
> > khelper used greatest stack depth: 7184 bytes left
> > ...
> > khelper used greatest stack depth: 6328 bytes left
> > stty used greatest stack depth: 6180 bytes left
> > mount used greatest stack depth: 6156 bytes left
> > mknod used greatest stack depth: 5932 bytes left
> > ...
> > wpa_supplicant used greatest stack depth: 5740 bytes left
> > ...
> > dhclient3 used greatest stack depth: 5500 bytes left
> > ----------------8<--------------
> >
> > it is the "results" of the CONFIG_DEBUG_STACKOVERFLOW=y
> > CONFIG_DEBUG_STACK_USAGE=y options or it's other problem or feature?
>
> CONFIG_DEBUG_STACK_USAGE, in kernel/exit.c:
>
> ---
> ~Randy
> desserts:  http://www.xenotime.net/linux/recipes/
>


sure, but to 2.6.22 or 2.6.23-rcX (with merged the cfs scheduler)
don't show this warnings, but the CONFIG_DEBUG_STACK_USAGE is enabled.


-- 
Thanks,
Oliver

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