linux-kernel - Re: running of out memory => kernel crash

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Message-ID: <1312874259.89770.YahooMailNeo@web111704.mail.gq1.yahoo.com>
Date:	Tue, 9 Aug 2011 00:17:39 -0700 (PDT)
From:	Mahmood Naderan <nt_mahmood@...oo.com>
To:	Randy Dunlap <rdunlap@...otime.net>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: running of out memory => kernel crash

>Do you have any kernel log panic/oops/Bug messages?
 
Actually, that happened for one my diskless nodes 10 days ago.
What I saw on the screen (not the logs), was 
"running out of memory.... kernel panic....."

I have not defined any swap partition for diskless nodes. Only the server 
has such partition. 

If you think that is an odd behavior, please let me know what will happen 
exactly when an application needs more memory but there is no room 
left and swap is disabled.
  

// Naderan *Mahmood;


----- Original Message -----
From: Randy Dunlap <rdunlap@...otime.net>
To: Mahmood Naderan <nt_mahmood@...oo.com>; linux-mm@...ck.org
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Sent: Tuesday, August 9, 2011 11:36 AM
Subject: Re: running of out memory => kernel crash

On Mon, August 8, 2011 11:53 pm, Mahmood Naderan wrote:
> Hi
> I have noticed that when the swap is disabled
>
> (either via swapoff or not defining any swap partition),
>
> then running out of memory can cause a kernel panic. 
>
> I wonder why the hungry application won't be killed
>
> upon a request for a resource that is not available?
> In that case, the problematic application will be killed
> only but what we see now is that the whole system is
> crashed.

Do you have any kernel log panic/oops/Bug messages?

[adding linux-mm mailing list]


-- 
~Randy
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