Re: kernel: __alloc_pages: 1-order allocation failed

[Marcelo Tosatti <marcelo@conectiva.com.br>]

On Tue, 28 Aug 2001, Daniel Phillips wrote:

> On August 27, 2001 10:14 pm, Andrew Kay wrote:
> > I am having some rather serious problems with the memory management (i 
> > think) in the 2.4.x kernels.  I am currently on the 2.4.9 and get lots 
> > of these errors in /var/log/messages.
> > 
> > Aug 24 15:08:04 dell63 kernel: __alloc_pages: 1-order allocation failed.
> > Aug 24 15:08:35 dell63 last message repeated 448 times
> > Aug 24 15:09:37 dell63 last message repeated 816 times
> > Aug 24 15:10:38 dell63 last message repeated 1147 times
> > 
> > I am running a Redhat 7.1 distro w/2.4.9 kernel on a Dell poweredge 6300 
> > (4x500Mhz cpu, 4Gb ram).  I get this error while running the specmail 
> > 2001 benchmarking software against our email server, Intrastore.  The 
> > system  is very idle from what I can see.  The sar output shows user cpu 
> > at around 1% and everything else rather low as well.  It seems to pop up 
> > randomly and requires a reboot to fix it.
> > 
> > Is there any workarounds or something I can do to get a more useful 
> > debug message than this?
> 
> Please apply this patch:
> 
> --- 2.4.9.clean/mm/page_alloc.c	Thu Aug 16 12:43:02 2001
> +++ 2.4.9/mm/page_alloc.c	Mon Aug 20 22:05:40 2001
> @@ -502,7 +502,8 @@
>  	}
>  
>  	/* No luck.. */
> -	printk(KERN_ERR "__alloc_pages: %lu-order allocation failed.\n", order);
> +	printk(KERN_ERR "__alloc_pages: %lu-order allocation failed (gfp=0x%x/%i).\n",
> +		order, gfp_mask, !!(current->flags & PF_MEMALLOC));
>  	return NULL;
>  }
>  

Daniel,

Its probably the bounce buffering thingie.

I'll send a patch to Linus soon.

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