Subject: Re: Stack warning from 2.6.24-rc
From: Jon Masters <jonathan@jonmasters.org>
To: Martin Knoblauch <spamtrap@knobisoft.de>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <955170.47530.qm@web32601.mail.mud.yahoo.com>
References: <955170.47530.qm@web32601.mail.mud.yahoo.com>
Content-Type: text/plain
Organization: World Organi[sz]ation Of Broken Dreams
Date: Tue, 04 Dec 2007 06:56:41 -0500
Message-Id: <1196769402.27258.158.camel@perihelion>
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1056
Lines: 24


On Tue, 2007-12-04 at 03:46 -0800, Martin Knoblauch wrote:
> Hi,
> 
>  I see the following stack warning(s) on a IBM x3650 (2xDual-Core, 8 GB, AACRAID with 6x146GB RAID5) running 2.6.24-rc3/rc4:
> 
> [  180.739846] mount.nfs used greatest stack depth: 3192 bytes left
> [  666.121007] bash used greatest stack depth: 3160 bytes left
> 
>  Nothing bad has happened so far. The message does not show on a similarly configured HP/DL-380g4 (CCISS instead of AACRAID) running rc3. Anything to worry? Anything I can do to help debugging?

This is enabled by CONFIG_DEBUG_STACK_USAGE, which defines
check_stack_usage. It is called on task exit and will warn each time a
task has used the biggest kernel mode stack since booting. This isn't a
bug, and isn't a (bad) warning, it's just informational right now.

Jon.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/