Re: Stack size

Re: Stack size

[Chris Wright]

[Hey, any chance you could join us in September? ;-) "Date:   Sun, 12 Oct
2003 13:35:33 +0100"]

* Breno (brenosp@brasilsec.com.br) wrote:
> What happen when stack increase more than 8mb ?

Memory corruption.
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net

Re: Stack size

[Breno]

Is there a test in kernel to know how much memory is consumed by stack ?

Breno
----- Original Message -----
From: "Chris Wright" <chrisw@osdl.org>
To: "Breno" <brenosp@brasilsec.com.br>
Cc: "Kernel List" <linux-kernel@vger.kernel.org>
Sent: Friday, September 12, 2003 2:41 PM
Subject: Re: Stack size


> [Hey, any chance you could join us in September? ;-) "Date:   Sun, 12 Oct
> 2003 13:35:33 +0100"]
>
> * Breno (brenosp@brasilsec.com.br) wrote:
> > What happen when stack increase more than 8mb ?
>
> Memory corruption.
> -chris
> --
> Linux Security Modules     http://lsm.immunix.org
http://lsm.bkbits.net
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Re: Stack size

[Chris Wright]

* Breno (brenosp@brasilsec.com.br) wrote:
> Is there a test in kernel to know how much memory is consumed by stack ?

Have you looked at the CONFIG_DEBUG_STACKOVERFLOW code?
thanks,
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net

Re: Stack size

[Robert Love]

On Sun, 2003-10-12 at 08:35, Breno wrote:
> What happen when stack increase more than 8mb ?

I think you mean 8KB.

	Robert Love

Re: Stack size

[Jörn Engel]

On Fri, 12 September 2003 12:11:19 -0700, Chris Wright wrote:
> 
> * Breno (brenosp@brasilsec.com.br) wrote:
> > Is there a test in kernel to know how much memory is consumed by stack ?
> 
> Have you looked at the CONFIG_DEBUG_STACKOVERFLOW code?

Just a band aid, not more.  If you want to be sure, poison the stack
on fork and check the poison on exit.

Jörn

-- 
Do not stop an army on its way home.
-- Sun Tzu

Re: Stack size

[Matias Alejo Garcia]

On Sun, 2003-10-12 at 08:35, Breno wrote:
       ^^^^^^^^^^^^^^^^^^^^   
On Fri, 2003-09-12 at 13:41, Chris Wright wrote:
> [Hey, any chance you could join us in September? ;-) "Date:   Sun, 12 Oct
> 2003 13:35:33 +0100"]

Breno: 

Carpe diem! Live the present!

-- 
matías <-> http://matiu.com.ar

Re: Stack size

[Alex Riesen]

Breno, Sun, Oct 12, 2003 14:35:33 +0200:
> What happen when stack increase more than 8mb ?

in the kernel or in a user program?

In user program - probably nothing.

Exemple of code for cmd " scsi start "

[phil]

Hello,
I search an exemple in C for send a command to a disk, the scsi command 
  i need is a start command.
Where can i find a exemple with source code.

cdt
philipp

Re: Exemple of code for cmd " scsi start "

[Patrick Mansfield]

On Sun, Sep 14, 2003 at 11:55:38PM +0200, phil wrote:
> 
> Hello,
> I search an exemple in C for send a command to a disk, the scsi command 
>   i need is a start command.
> Where can i find a exemple with source code.

For user level code:

http://www.torque.net/sg/#Utilities:%20sg_utils%20and%20sg3_utils

Check out sg_start.c.

Kernel code - drivers/kernel/sd.c uses START_STOP, other code in sd.c and
scsi_scan.c use various SCSI commands.

-- Patrick Mansfield

Stack size

[Breno]

What happen when stack increase more than 8mb ?

att
Breno