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

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Message-Id: <20071228153258.bef76bb2.randy.dunlap@oracle.com>
Date:	Fri, 28 Dec 2007 15:32:58 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	=?ISO-8859-1?Q? "Oliver_Pinter_(Pint=E9r_Oliv=E9r)" ?= 
	<oliver.pntr@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6.23(?)=<] X used greatest stack depth: N bytes left

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/
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